Ceco Dean pump m300 Instruction manual

Magnetically C upled H riz ntal Pr cess Pumps

Instructi n Manual MC 1.3.10.2A DO NOT INSTALL, OPERATE, OR SERVICE THIS PUMP BEFORE READING THE ENTIRE MANUAL

DEAN PUMP® SERIES M300

6040 Gui n R ad • Indianap lis, IN 46254

(317) 293-2930 • FAX: (317) 297-7028

E-mail: inf @deanpump.c m • Web Site: www.deanpump.c m

MET-PRO

A Met-Pro Fluid Handling Technologies Business

Combining the Resources of Dean Pump, Fybroc & Sethco

Global Pump Solutions

Read the instruction manual completely, before installing, filling, operating, or maintaining this equipment.

Obtain, read, and heed the MSDS (Material Safety Data Sheet) for the fluids being handled before attempting to

fill, operate or maintain this equipment.

Obtain instructions from the Safety Engineer responsible for your facility before performing any work on the pump-

ing equipment and systems.

APPLICATION AND REAPPLICATION - At the time of installation, the equipment received should have already been

selected for the service required. You must read the paperwork for the installation and check serial number of the

pump to assure that you are installing the correct pump into the service for which it was selected.

Many pumps look identical from the outside but can be made of different materials and/or be constructed differently

inside. Personal injury, death, equipment damage, product (pumpage) damage, and/or product loss could occur if the

incorrect pump is installed.

Do not transfer an existing pump to any other service conditions until you have thoroughly reviewed the pump

construction, materials, sizing, sealing, pressure containing capability, head/capacity capability, and

temperature capability with respect to the required service. Consult your DEAN PUMP sales engineer with all the

service requirements and a full description of the existing pump (including the serial number), seal, and sub-systems

so that we can assist you in a successful reapplication.

INSTALLATION - Always wear the appropriate protective apparel when working on or around the pumping equipment.

Safety glasses with side shields, heavy work gloves (use insulated work gloves when handling hot items), steel toed

shoes, hard hat, and any other protective gear as needed for protection. One example of other gear would be

breathing apparatus when working near toxic materials.

Use lifting devices, manufactured expressly for the purpose of lifting, to move the pumping machinery. Do not attempt

to lift the assembly or its components manually. Use only devices with lifting capabilities in excess of the weight of

the unit being lifted. Inspect straps,chains, hooks, etc. for damage and lifting capability before use. Lift only at the

center of gravity.

Personal injury, death, and/or equipment damage could occur if good lifting practices are not used.

Install the equipment on a properly designed and built foundation. Assure that the driver (motor, turbine,or engine)

shaft is properly aligned to the pump shaft.

Connect the suction and discharge piping without forcing the piping into position. The pipe flanges must line up

with the pump flanges “freely”. Strain caused by “forcing” and/or misalignment may cause failure of the pumping

unit, flanges, and/or the piping resulting in fluid (pumpage) release. This could cause personal injury, death and/or

damage to this and/or other equipment.

Install a “new” bolt, of the correct size per ASME/ANSI B16.5 and the correct material per ASME/ANSI B16.5,

in every bolt hole. Tighten all bolts evenly. Use only new uncorroded fasteners.

Improper flange bolting may cause failure of the pumping unit, flanges, piping, and/or fluid (pumpage) release

which could cause personal injury, death, and/or damage to this and/or other equipment.

Connect all other (auxiliary) piping necessary for safe and successful operation of the equipment in the specific ser-

vice conditions of the application. Make sure that all piping is installed into it’s correct connection. Installation of a

pipe into an incorrect location could result in an explosion and personal injury or death as well as damage to this

and/or other equipment.

Install pressure relief valves in any cavities that could be subjected to pressures in excess of the allowable working

pressure of that cavity. Explosion, personal injury, death, and/or damage to this and/or other equipment may occur

if pressure exceeds allowable.

Recheck the alignment between the driver (motor, turbine, or engine) and pump shafts. Installation of piping may have

forced the pump out of alignment. If so, correct the piping to remove the distorting load.

Check to be certain that the shaft coupling spacer is not installed, and then gently bump the motor starter to check

the rotational direction of the motor. If this is not in the direction of rotation required for the pump, make the neces-

sary corrections.

Lock-out the power to the driver (motor, turbine, engine, etc.)

Install the shaft coupling spacer. Be sure that you install all the retaining devices and bolts and that they are tight.

Read and comply with the coupling manufacturer’s instructions. Personal injury, death, and/or equipment damage

could occur if the coupling spacer is not properly installed. Remove all debris and tools from the area near the shafts

and the shaft coupling. Do this to assure that nothing is caught and thrown by the rotating parts when the pump is

started. Bolt the coupling guard securely to the baseplate, checking to assure that it is not contacting any parts that

will rotate when the pump is started.

FILLING - Before filling the pump with liquid, check to see that all possible leak locations are sealed. See that all of

the connections into the pressure containing cavity are sealed or connected to a related piping system that also has

all possible leak paths sealed. Do not plug unused jacket cavities, as this could develop dangerous pressure build-

up. Use a wrench on all bolted joints to apply torque to assure that all gaskets are sealed in a tight joint. Check to

see that all threaded pipe connections are also tight enough to seal the liquid pressure that will be applied when

the system is started.

OPERATING - Before starting the unit, see that all personnel are a safe distance away from all possible hazards,

that all sub-systems are connected and operating, that all debris has been removed, that the shaft coupling guard

is securely in place, and that the pump is full of liquid.

Do not operate this pump at shut-off (no flow) as an explosion may result. This can occur with any liquid, even “cold

water”. Personal injury, death, equipment damage, and/or loss of product (pumpage) is likely to occur. If your sys-

tem is operated where it is possible for all outlets for the discharge from the pump to be closed while the pump is

still operating, a modification of the system needs to be made to assure a continual flow of pumpage through the

pump. Note that some people have a belief that a bypass line from the discharge side of the pump to the suction

side of the pump will relieve this problem, this is “NOT TRUE”; DO NOT ATTEMPT THIS.

MAINTENANCE, DISASSEMBLY AND REPAIR - Work must be performed only by thoroughly trained and qualified

personnel to assure quality repair and to reduce the possibilities of injury to personnel and/or damage to equip-

ment. If you do not have personnel who are capable of safe quality repair of this equipment, we advise you to return

the equipment to DEAN PUMP to be repaired.

When it is necessary to open the pump and/or the pumping system, the fluid will be exposed to the atmosphere

and personnel in the area. For the safety of all involved, the risk of exposure of personnel to the hazards of the

pumpage can be reduced by flushing the entire system with a compatible non-toxic, non-hazardous,stable liquid

before opening the pump or the system. In all cases, where the system is flushed or not, use the utmost care around

the pumpage and the pumping system.

Always wear the appropriate protective apparel when working on or around the pumping equipment. Safety glass-

es with side shields, heavy work gloves (use insulated work gloves when handling hot items), steel-toed shoes, hard

hat, and any other protective gear as needed for protection. One example of other gear would be breathing

apparatus when working near toxic materials.

Use only top quality tools.

Stop the pump. Turn off the power supply (electricity, steam, etc.) to the pump driver (motor, turbine, engine, etc.)

and lock the switching device so that it cannot be restarted. Tag the switching device so that no one will attempt to

restart the unit.

Close the suction and discharge valves completely to isolate the pump from the system. Lock the valves in the closed

position and tag them so that no one will attempt to open them.

Turn off, lock out, and tag all sub-systems and auxiliary equipment and auxiliary supply lines to isolate the pump-

ing unit from any and all power, energy, and/or fluids.

Do not attempt to perform any work on the unit until you are confident that the pump and its contents have been

stabilized at ambient temperature, and atmospheric pressure.

Put on protective wear to protect human tissue from attack by the fluids contained in the pump and any sub-systems,

and from any vapors or fumes that could possibly be released from these fluids. This could mean breathing apparatus,

face shields, heavy long sleeve rubber gloves, rubber apron, hood, and possibly more, dependent of course on the

properties of the fluids involved and the installed drain and vent piping arrangement. Personal injury and/or death

can occur if adequate precautions are not taken with regard to the fluid, the installation, and the possibilities of the

release of fluid, vapors, and/or fumes.

Remove the coupling guard. Remove the coupling spacer.

Drain all the fluids from the auxiliary sub-systems (lubrication, cooling, heating, seal barrier, etc.) that are connect-

ed to the pump. Drain each fluid into a separate container. Use caution required for each fluid after reading the

MSDS (Material Safety Data Sheet) for each.

Flush each sub-system with a compatible, non-toxic, non-hazardous, stable liquid. Drain into individual containers

for each fluid. Disconnect and remove all auxiliary piping.

Carefully bleed off any pressure remaining in the pump. Pressure remaining in the pump will be dependent upon

the pressure in the system when the pump was stopped; the quality, type, and condition of the isolation valves; the

thermal expansion valves of the fluid and the pump material; and the change in the vapor pressure of the fluid

between the temperature at the time the isolation valves were closed and the ambient temperature. Bleeding must

be through a valved drain line piped to a closed container mounted lower than the pump. The container must be

arranged with a relief passage to some point where pressure and fumes will not be harmful to personnel. The

container must also have a level device so that determination can be made that sufficient fluid has been drained to

empty the pump cavity and the volume of fluid that was contained in the run of suction and discharge pipe between

the isolation valves and the pump. After the initial rush of fluid from the pump relieves the pressure, the drain valve

can be opened further to speed the draining operation. When fluid quits running into the drain tank, gauge the

volume to see if it is sufficient to have fully drained the contents of the pump and the suction and discharge pipes

between the isolation valves.

If the system was constructed without any drain connections, it will be necessary to consult the designers of the system

for safe draining procedures.

Now drain any small piping, that contains the fluid pumped, from all low points, into the same container used to drain

the pump. Do not drain any other fluids (different than the pumpage) into this container as they may not be

compatible. Personal injury, death, and/or equipment damage could occur.

Even though it might appear that, the cavity being drained has completely drained, be extremely careful about

opening the system and/or opening the pump. If something solid in the pumpage moves to the vicinity of the drain

connection, it could seal-off the drain and maintain pressure in the cavity thought to have been drained. It is also

possible that the isolation valves are not sealing and therefore allowing liquid to flow from the system into the pump.

Personal injury, death, and/or equipment damage may occur if intense caution is not exercised.

Because of the above possibility, when you loosen the gasketed joint at the back of the casing (5), loosen the bolts or

nuts only one full turn, and then use jack screws to break the gasket seal. If fluid and/or pressure remains in the pump,

it will spray out now. Use extreme caution, wearing protective gear, to avoid injury. Do not proceed with disas-

sembly until leakage ceases completely. If leakage does not cease, the isolation valves may not be sealing. Note

that if the pump was purchased with out a drain, the pump will contain fluid which will flow out at the time the bolts

are loosened and the gasket seal is broken.

When you open the pump, the fluid will be exposed to the atmosphere and personnel in the area. For the safety of

all involved, the risk of exposure can be reduced by flushing the cavity that was just drained, with a compatible non-

toxic, non-hazardous, stable liquid, before disassembling the pump.

Remove the casing bolts or nuts and using mechanical lifting apparatus to support the weight, pull the rotating unit

from the casing.

Flush the wetted parts now exposed with compatible, non-toxic, non-hazardous, stable liquid.

Remove the gasket from the face of the casing (5) or the bearing housing (26) dependent on which one the gasket may

have adhered to. The type of gasket and material of construction will vary with service requirements. Attack by prying

and then, if necessary, layering off the old gasket with a sharp scraper, attempting to remove it in the largest possible

pieces. Wear heavy leather, long sleeve work gloves when using the scraper. Wet the gasket before and during the

scraping operation to reduce the possibility of fibers becoming airborne. Wear a respirator during this operation and

until all debris has been disposed of in a plastic bag. Remove all of the gasket material down to clean metal surfaces

on both parts that contacted the gasket. Place all of the gasket residue in a plastic bag, seal the bag and dispose of it

in compliance with all government requirements.

The rotating assembly of the pump can now be moved to a more convenient location for further disassembly. Use

only high quality tools. Flush parts as disassembled to removed hazardous residue from the pumpage and/or

sub-system fluids.

Wear protective equipment as advised at the beginning of these warnings.

Use mechanical lifting equipment to lift assemblies and components.

Do not apply heat to parts to assist in disassembly. Explosion could occur causing personal injury, death, and/or

damage to equipment.

Do not attempt to drill, saw, or otherwise cut parts to remove them. Explosion and/or fuming could occur causing

personal injury, death, and/or equipment damage.

Do not hammer on any parts. Personal injury and/or damage to equipment may occur.

Do not attempt to manufacture parts or modify Dean Pump parts in any manner. Death, personal injury, and/or

damage to equipment may occur.

One example of the above would be overboring the seal chamber, which removes metal that is required to contain

fluids. Removal of this metal reduces the pressure containing capability of the part, and may create a leak path

through the part.

Replace all gaskets, seals, bearings, and lubricants. Replace all parts that have worn, corroded, eroded, or other-

wise deteriorated.

Use only Dean Pump Met-Pro Corporation parts.

HAZARDOUS SITUATIONS MAY OCCUR UNLESS THIS EQUIPMENT IS APPLIED, INSTALLED, OPERATED, AND MAINTAINED BY THOROUGHLY QUALIFIED PERSONNEL

IN STRICT ACCORDANCE WITH THE INSTRUCTION MANUAL AND ALL APPLICABLE DRAWINGS AND CODES.

READ WARNINGS

INDEX

Caution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Product Inspection and Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Product Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Warning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Receiving Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Mechanical Design Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Standard Materials of Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Pressure/Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Pump Foundation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Suction and Discharge Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Baseplate Mounting and Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Pump and Driver Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Grouting the Baseplate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Allowable Piping Loads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Piping Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Internal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

External . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Optional Protection Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Temperature Probe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Electrical Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Vibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Pressure Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Level Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Secondary Containment Seal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Pump Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Starting the Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Pump Start-Up Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Spare Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Ordering Spare Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Secondary Containment Seal Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Pump Section View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Internal Circulation Flow Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Disassembly and Assembly Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Dean Pump Serial Number

Plant Property Number

Service

Location

Capacity ; T.D.H. ; Imp. Dia. ; Temp. ; RPM

Spare Parts in Plant Stock Room

Interchangeable with Dean Serial Numbers

CUSTOMER’SPLANT MAINTENANCE RECORD

2 27

26 3

w) Lay the assembly over so that the shaft is in a horizontal

position.

x) Remove the impeller nut (12), impeller washer (12A)

and the handle, or the optional eye bolt.

y) Lubricate the unslotted face of a new thrust collar (210)

with a light oil and place it over the exposed end of the

journal sleeve (200), so that the lubricated face mates

against the face of the bearing bushing (182). Place the

impeller key (4) into the keyway of the pump shaft (29),

being sure that it engages the slot in the end of the

journal sleeve (200). Drive the thrust collar dowel

(210A) into the impeller (3). Slide the impeller (3) onto

the pump shaft (29), being careful to have the thrust

collar (210) rotated to such a position that its dowel

hole receives the thrust collar dowel (210A). Place the

impeller washer (12A) over the end of the pump shaft

(29) and against the impeller (3). Place the impeller

spring washer (12B) over the end of the pump shaft

(29) so that its concave (dished) side rests against the

impeller washer (12A). Install and tighten the impeller

nut (12) to 30 ft. lb. (for Frames I and II) or 60 ft. lb.

(for Frame III) while holding the impeller (3) against

rotation with a piece of bar stock placed between the

impeller blades (3). It is important to restrain the

impeller (3) from rotation in this manner to reduce the

possibility of breaking the internal silicon carbide parts.

Apply two drops of Locite “Thread Lock” #222 to the

threads of a new locking set screw (12D) and thread it

into the impeller nut (12). Tighten the locking set screw

(12D) to 15 Ft. Lb., while holding the impeller (3)

against rotation as described above.

z) Press a new casing wear ring assembly (190) into

the casing (5) with the stepped side of the assembly

facing out.

CAUTION: Wear safety glasses, gloves, and a long

sleeved shirt during this operation. Care must be

exercised so that the brittle inner member of the

casing wear ring assembly (190) is not broken.

aa) Install any auxiliary piping which must be affixed to the

pump before it is mounted to the baseplate.

ab) Place a new casing gasket (77) into the casing (5) and

then carefully slide the rotating assembly into the casing

and tighten the casing bolts, slowly and evenly to 50 Ft. Lb.

ac) Rotate the drive shaft (29A) by hand to check for any

internal interference. Correct as required.

ad) Bolt the pump to the baseplate, install the coupling hubs,

realign the pump and driver; refer to “PUMP AND

DRIVER ALIGNMENT.”

ae) Check the motor rotation, install the coupling spacer

and the coupling guard.

af) Install any remaining auxiliary piping. Close any drain

valves or open connections in the auxiliary piping.

ag) Fill, lubricate, and vent the pump per the sections titled,

“PUMP LUBRICATION” and “STARTING THE PUMP.”

ah) Follow instructions under “PUMP START-UP CHECK LIST.”

CAUTION—THIS EQUIPMENT CONTAINS BRITTLE AND

MAGNETIC MATERIALS.

CAUTION—EXTREME HAZARD

HEART Magnets in/from this pump can upset the timing of

heart pacemakers and make them malfunction. This caution

cannot be overstated due to the health risk involved.

EYES, HANDS, FINGERS, EXPOSED FLESH Brittle materials

(such as silicon carbide and carbon used for wearing parts)

can fracture and propel hard, sharp particles causing serious

personal injury. Protective equipment must be utilized when

servicing these parts.

The magnets are also very brittle and if cracked or fractured

can propel hard, sharp particles causing serious personal

injury. Protective equipment must be utilized when servicing

these parts.

The magnets used in this pump are very strong and can cause

parts and tools to slam together injuring hands and fingers.

This could also crack the magnets and propel particles as

cautioned above.

WARNING—EQUIPMENT DAMAGE

Some equipment, instruments, and personal possessions could

be damaged and/or destroyed. For example, computers,

computer tapes, computer discs, credit cards and any other

magnetically actuated devices will be rendered useless if

exposed to the strong magnetic field of this pump or its parts.

Watches, spring driven or electronic, will be ruined if exposed

to the strong magnetic field of this pump or its parts.

WARNING—FREIGHT

When shipping raw or bare magnet assemblies, especially by

air, special precautions may be necessary. Usually the shipment

of an assembled pump is not a problem. Consultation with

Dean Pump and the freight company is recommended.

This pump is designed incorporating a relatively new concept

called a “Magnetic Coupling”, and many mechanics will not

have the experience to realize the potential hazard of the

energy stored in the very powerful magnets.

The magnets are installed in two different parts of the pump;

the outer magnet assembly (167), which is driven by the driver

(electric motor), and the inner magnet assembly (175), which is

driven through its magnetic attraction with the outer magnet

assembly (167). There is little magnetic field outside the confines

of the pump components when they are in a completely

assembled pump.

When the pump is partially or completely disassembled, how-

ever, there is a very strong magnetic field, which, if mishandled,

could cause personal injury and/or mechanical damage.

Pinched fingers and hands are the most common personal

injury when any ferrous part comes close to a magnetic field.

This hazard also exists when holding parts with your hands

during assembly.

The most common mechanical damage is chipped magnets and

ruined wrist watches. Chipped magnets, if used, can cause

extensive mechanical damage when particles come loose during

operation. Wrist watches stop dead when they are exposed to

the magnetic field. Non-magnetic tools should be used when

working on, or in close proximity to, magnetic assemblies.

Cleanliness of the magnetic parts is very important as it is

difficult to remove ferrous particles which are “stuck” to the

magnets. Magnetic parts should be sealed in plastic bags and

stored away from the presence of ferrous articles and particles.

The magnetic coupling in each individual pump is selected for

that particular service and is mated with the motor size (power

and inertia) and coupling size. It is critical that maximum and

minimum values of operating condition are known; particularly

temperature, vapor pressure, specific gravity, and viscosity. Any

change in operating conditions which affects specific gravity,

viscosity, differential head, temperature, specific heat, capacity

or speed, may cause the couplings to dis-engage. Change of

motor or coupling could cause the same problem.

If any of the above changes are desired, contact Dean Pump

with all the changes in conditions and we will recalculate the

unit to see if it is acceptable or, if not, what modifications might

be possible.

PRODUCT INSPECTION AND TEST

The Products of Dean Pump Division are subject to thorough

and rigorous quality control and inspection procedures through-

out the whole of the manufacturing process to assure proper

operation in full conformity with established performance

standards. On completion of inspection, each unit is sprayed

internally with rust inhibitor (if material is subject to atmospheric

corrosion), sealed against the entrance of dirt, and tagged with

a signed certificate of inspection prior to shipment. Each pump

when shipped is ready to perform the service for which it was

designed with minimum maintenance and expense if properly

installed and operated in accordance with the instructions

furnished.

DEAN PRODUCT WARRANTY

We warrant to the purchaser from us of Dean Pump products

and parts of our own manufacture (Dean Products) that the

Dean Products are free “under rated use and service” from

defects in design, material and workmanship for a period of

one (1) year from the date of installation, but not to exceed

eighteen (18) months from the date of shipment by us. This

warranty does not cover (I) any loss or damage resulting from

wear, corrosion, abrasion or deterioration due to normal use in

rated service; (II) replacement of service items such as lip seals,

and mechanical seals; (III) products or parts manufactured by

others but furnished by us which, if defective, shall be repaired

or replaced only to the extent of the original manufacturer‘s

CAUTION

4 25

safety glasses, gloves, and a long sleeved shirt during

this operation. Care must be exercised so that the brittle

inner member of the casing cover wear ring assembly

(195) is not broken. Drive the clamp ring dowel (149A)

into the casing cover (22).

l) Slide a new bearing cartridge (180) into the casing cover

(22) and rotate it until the four bolt holes line up with the

four tapped holes in the casing cover (22). The four holes

are unequally spaced so that the bearing cartridge (180)

will be in correct orientation with the casing cover (22). Be

sure the tapped holes and the cap screws are clean. Apply

two drops of Loctite “Thread Lock” #222 to the threads of

each of the cap screws (180A) and secure the bearing

cartridge (180) to the casing cover (22). Tighten the bearing

housing screws (180A) to 15 Ft. Lb. on Frames I & II which

have 5/16” screws, or 35 Ft. Lb. on Frame III which has

7/16” screws.

m) Be sure that the pump shaft (29) is clean. Snap new

tolerance rings (200B) into the two grooves in the pump

shaft (29) closest to the larger end of the pump shaft (29).

Rotate the tolerance rings (200B) so that their joints are 180

degrees apart. Press a new journal sleeve (200), slotted end

first, onto the pump shaft (29), against the shaft shoulder,

being careful to align the slot in the journal sleeve (200)

with the keyway in the pump shaft (29). Handle the journal

sleeves (200) very carefully as they are very brittle and

therefore will break easily.

Place a new sleeve gasket (77H), the bearing spacer

(17) and a second sleeve gasket (77H) over the pump

shaft (29). Install two new tolerance rings (200B) into the

remaining grooves in the pump shaft (29). Rotate the

tolerance rings (200B) so that their joints are 180

degrees apart. Press a new journal sleeve (200), slotted

end last, onto the pump shaft (29) being careful to align

the slot in the journal sleeve (200) with the keyway in the

pump shaft (29).

n) CAUTION: The inner magnet assembly (175) contains

powerful magnets. Be sure that the inner magnet

assembly (175) is clean. Ferrous particles attracted to

the magnets are very difficult to remove. A piece of

masking tape drawn “sticky side” across the surface of

the inner magnet assembly (175) will help remove parti-

cles. Place the inner rotor key (171A) into the keyway

in the pump shaft (29), being sure that it engages the

slot in the journal sleeve (200). Apply four drops of

Loctite “Thread Lock” #222 to the diameter of the pump

shaft (29) which engages the inner magnet assembly

(171). Carefully slide the pump shaft (29) into the inner

magnet assembly (175) until the shoulder of the pump

shaft (29) seats firmly against the face of the counter-

bore in the inner magnet assembly (175); a light press

may be required. Set this assembly aside, with the shaft

horizontal, until the Loctite dries.

o) Carefully place a new thrust collar (210), slotted end first,

over the pump shaft (29) and into the inner magnet

assembly (175) positioning the slot to engage the inner

rotor key (171A).

p) Lubricate the bearings (182), the journal sleeves (200)

and the face of the thrust collar (210) with a light oil.

Slide the pump shaft (29) carefully through the bearings

(182) in the bearing cartridge (180). It is most important

when assembling these parts to assure that the thrust

collar (210) does not move away from its seating face

in the inner magnet assembly (175); therefore, in all

handling of this assembly be sure that the impeller (3)

end of the pump shaft (29) is always kept higher than

the inner magnet assembly (175) end.

q) Place the handle, described in paragraph b of the

Disassembly Procedures, over the end of the pump shaft

(29) and clamp it into place with the impeller washer

(12A) and the impeller nut (12), or use the optional

eye bolt.

r) Place a new containment shell gasket (77G) into the

groove in the casing cover (22). Place the containment

shell (150) into position over the bearing cartridge

(180) and place the clamping ring (149) into position,

engaging the dowel pin in the casing cover (22). Apply

two drops of Loctite “Thread Lock” #222 to the threads

of each of the cap screws (149B) and tighten them to

20 Ft. Lb. on Frames I & II which have 3/8” screws, or

35 Ft. Lb. on Frame III which has 7/16” screws, to

secure the clamping ring (149) to the casing cover (22).

s) If the pump is equipped with an optional “Secondary

Containment Seal”, place a new frame gasket (77K) into

the O-ring groove in the casing cover (22).

t) Remove the 1/8" thick rubber protective pad, as

described in paragraph g), from the inside of the outer

magnet assembly (167). Clean both the outer magnet

assembly (167) and the containment shell (150) of any

particles which might have been attracted to them, to

prevent damage to the magnets during operation.

Ferrous particles which stick to the magnet surfaces can

be removed by using a piece of masking tape rubbed

“sticky side” across the magnet surfaces.

u) CAUTION: Strong magnetic field, parts must be mechanically

restrained to prevent injury or damage.

Stand the frame (26) assembly up vertically on the end of

the drive shaft (29A) and have one man hold it in position

while a second man, using a small hoist, hooked to the

handle or eyebolt described in paragraph q, carefully low-

ers the inner magnet assembly (175) into the outer magnet

assembly (167). CAUTION: The outer magnet assembly

(167) will strongly attract the inner magnet assembly (175)

when the magnetic fields approach each other, snapping the

parts together rapidly. Fingers attempting to hold the parts

during this assembly could be severely damaged. The

containment shell (150) must also be carefully centered as it

is lowered into the outer magnet assembly (167) so that it

does not strike and damage the magnets.

v) Rotate the casing cover (22) until the two tapped holes

line up with the drilled holes in the frame (26). These

holes are unequally spaced so that the parts will locate in

only one position. Install and tighten the two cap screws.

warranty; (IV) any loss or damage to or defects in any Dean

Products resulting from the misuse or improper storage, installa-

tion, or operation thereof; or (V) any loss or damages to or

defects in any Dean Products resulting from any alteration or

modification thereof not expressly authorized and approved by

us in writing. We shall not be liable, directly or indirectly,

under any circumstances for consequential or incidental dam-

ages, including, but not limited, to (I) any loss of business or

profits; and (II) labor, material or other charges, claims, losses

or damages incurred or suffered from, in connection with or in

consequence of the working upon, alteration, or repair of any

defective Dean Products by persons or firms other than us. Our

liability for breach of warranty hereunder is limited solely to

the repair in our factory or the replacement F.O.B. our factory,

as the case may be, of any Dean Products which shall have

been determined by us, after notice to us and inspection by us

within the warranty period, to be so defective when shipped

by us.

THIS WARRANTY AND THE LIABILITY SET FORTH HEREIN ARE

EXCLUSIVE AND IN LIEU OF ALL OTHER LIABILITIES AND

WARRANTIES, EXPRESS OR IMPLIED, INCLUDING IMPLIED

WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

PARTICULAR PURPOSE.

WARNING

Proper storage while not in use and proper installation and

start-up are essential for successful pump operation. Misuse or

improper storage, installation or operation of pumps may result

in serious loss or damage. Dean Pump Division is not responsi-

ble for any loss or damage resulting from causes beyond its

control, and is not liable for charges for work performed or

materials furnished to repair such loss or damage.

ALL INSTALLATION, OPERATION, AND MAINTENANCE

MUST BE DONE BY THOROUGHLY QUALIFIED PERSONNEL

IN STRICT ACCORDANCE WITH THIS MANUAL AND MUST

COMPLY WITH ALL LOCAL, STATE AND FEDERAL CODES.

ONLY DEAN AUTHORIZED SERVICE PARTS SHOULD BE USED

IN THE REPAIR OF THESE PUMPS.

RECEIVING PUMP

When the pump is received from the transportation company, it

should be promptly inspected for damage and such damage

noted on the bill of lading before it is signed. Claims for ship-

ping damage must be filed against the carrier.

Care should be exercised in unloading and handling the pump.

Magnetically coupled pumps quite often contain brittle compo-

nents which can be broken by the shock of mishandling or

dropping of the unit.

STORAGE

Pumps must be properly covered and protected against mois-

ture, dirt, and physical damage during storage prior to installa-

tion. If prolonged storage is anticipated, a heavy protective

coating should be applied to all exposed machined surfaces. A

rust preventative must be used to protect all steel or cast iron

parts. The pump shaft and the motor shaft must be rotated by

hand every three months.

Pumps must also be protected from moisture, dirt, and physical

damage during and after installation while the system is being

completed. Pumps “stored” on their foundations must be com-

pletely checked for proper installation prior to start-up.

Care in storage and installation will preserve the built in

quality of each Dean Product.

MECHANICAL DESIGN SPECIFICATIONS

Frame I Frame II Frame III

Direction of Rotation CW CW CW

(viewed from coupling end)

Corrosion Allowance Casing 0.125” 0.125” 0.125”

Shell (.047” min wall thickness) .010” (Hastelloy C) .010” (Hastelloy C) .010” (Hastelloy C)

Impeller Balance: Standard Single Plane Dynamic Balance

Magnet Assembly Balance: Standard

Double Plane Dynamic Balance

Flanges

ANSI Class 150 150 150

Facing: Standard F. F. F. F. F. F.

Optional R. F. R. F. R. F.

Finish 125 Ra 125 Ra 125 Ra

Outer Bearings (Ball)

Radial 6210 2 RS 6012 2 RS 6012 2 RS

Thrust 6305NR 2 RS 6307NR 2 RS 6307NR 2 RS

Lubrication Grease Lube for Life Grease Lube for Life Grease Lube for Life

Internal Bearings Silicon Carbide vs. Silicon Carbide vs. Silicon Carbide vs.

Silicon Carbide Silicon Carbide Silicon Carbide

Magnets Samarium Cobalt Samarium Cobalt Samarium Cobalt

Hydrostatic Test Pressure 430 psig 430 psig 430 psig

Minimum Operating Temp. 0˚F 0˚F 0˚F

Maximum Operating Temp. ⁄350˚F 350˚F 350˚F

Maximum Working Pressure⁄

@ 100˚F

Minimum Viscosity 0.3 Cp. 0.3 Cp. 0.3 Cp.

Maximum Viscosity 300 Cp. 300 Cp. 300 Cp.

Maximum Solids Size 100 Micron 100 Micron 100 Micron

Maximum Solids Content 1.5% 1.5% 1.5%

Pump Shaft Dimensions:

Diameter at Coupling 0.875” 1.125” 1.125”

Diameter at Impeller 0.750” .750” 1.250”

Minimum Pump Shaft End Play

0.009” 0.009” 0.009”

Maximum Pump Shaft End Play 0.030” 0.030” 0.030”

Maximum Drive Shaft End Play 0.010” 0.010” 0.010”

Casing Bolt Torque 50 Ft.Lb. 50 Ft.Lb. 50 Ft.Lb.

Containment Shell (Clamp Ring) 20 Ft.Lb. 20 Ft.Lb. 35 Ft.Lb.

Bolt Torque

Bearing Cartridge Bolt Torque 15 Ft.Lb. 15 Ft.Lb. 35 Ft.Lb.

REASSEMBLY PROCEDURE

WARNING: Use only high quality tools.

Wear protective equipment as advised at the beginning of this section.

Use mechanical lifting equipment to lift assemblies and components.

Do not hammer on any parts. Personal injury and/or damage

to equipment may occur.

Use only Dean Pump Division of Met-Pro Corporation parts.

Do not attempt to manufacture parts or modify Dean Pump

parts in any manner. Death, personal injury, and/or damage

to equipment may occur.

WARNING—EXTREME HAZARD TO PERSONS WITH PACE MAKERS:

DO NOT WORK IN CLOSE PROXIMITY WITH UNASSEMBLED OR

DISASSEMBLED MAGNETIC PARTS WITHOUT FIRST CONSULTING

YOUR PHYSICIAN. IT IS POSSIBLE THAT THE STRONG

MAGNETIC FIELD ASSOCIATED WITH THESE PARTS COULD

RESET YOUR PACEMAKER HEART RATE OR CAUSE OTHER

SERIOUS PROBLEMS.

CAUTION: This unit contains powerful magnets. Personal injury

could occur if parts are not adequately restrained when in the

presence of the magnetic field. Remove your watch as the mag-

netic field will ruin it.

Assemble the pump in an area that has been cleared of loose

ferrous articles and particles. A wood bench is the preferred work

top, but a steel bench with a 3/4" plywood board, laid on top,

will suffice.

To assemble the pump, perform the following steps

a) Clean all parts thoroughly. Make certain that all ports,

lubrication grooves, and flow passages are completely

clean and free of any debris.

b) Replace all worn, corroded, eroded, or otherwise deteriorat-

ed parts. Use only new gaskets, new ball bearings, new

O-rings and new tolerance rings.

c) Replace the frame foot (9) if it was removed.

d) If the pump is furnished with the optional “Secondary

Containment Seal”, install a new drive shaft O-ring

(77L) into the outer magnet assembly (167) and apply

some light oil to lubricate the O-ring.

e) Thoroughly clean the outer magnet assembly (167). Be

certain that all ferrous particles are removed. A piece of

masking tape, rubbed “sticky side” across the surface of the

part, is quite effective in removing such particles. Press a

new inboard bearing (25) onto the outer magnet assembly

(167). Press only on the inner race. Support the end of the

outer magnet assembly (167) on a sheet of gasket material

when performing this operation to protect the magnets.

f ) If the pump is equipped with an optional “Secondary

Containment Seal”, install new gland O-rings (324 &

325) into the groves in the gland (13) and lubricate the

O-rings with a light oil. Carefully remove both O-rings

from a new mechanical seal assembly (95), lubricate

them with the special lubricant supplied, and then re-

install them into the mechanical seal assembly. Separate

the stationary portion of the mechanical seal assembly

(95) and carefully push it into the gland (13) with the

polished face exposed. Lubricate the polished face with

a light film of light oil. Place the carbon face of the

rotating portion of the mechanical seal against the

polished face and center it. Press a new lip seal (76)

into the gland (13) with the lip pointed towards the

mechanical seal (95). Lubricate the lip seal (76) with a

light oil. Be sure that the “rotating” portion of the

mechanical seal assembly (95) is centered in the gland

(13). Carefully slide this assembly over the outer magnet

assembly (167) and against the inboard bearing (25).

g) Insert the outer rotor key (163A) into the keyway in the

drive shaft (29A) and slide the drive shaft (29A) into the

outer magnet assembly (167).

CAUTION: Do not strike the magnets with the drive shaft

(29A) as you are installing it, the magnetic field will

attract the shaft. A piece of 1/8" thick rubber gasket

sheet cut 3-1/2" by 14" for frames I and II or 4" by

17" for frame III and coiled into a cylinder and then

inserted into the bore of the magnets before installing

the rotor shaft will make this assembly easier, and

reduce the possibility of damage.

h) Stand the drive shaft (29A) and outer magnet assembly

(167) with the shaft axis vertical and the magnets down,

upon the cupped end of the drive shaft (29) on a non-

magnetic (brass, bronze or 316 S/S) spindle so that the

outboard bearing (25A) can be pressed onto the shaft.

Press a new outboard bearing (25A) onto the drive shaft

(29A) with the snap ring, in its outer diameter, towards the

outer end of the drive shaft (29A). Pressing only on the

inner race, press the outer bearing (25A) against the

outer magnet assembly (167). Place a new bearing lock

washer (31A) onto the drive shaft (29A), screw the

bearing lock nut (31) onto the drive shaft (29A) and

snug against the outboard bearing (25A). Do not

wrench tighten at this time.

i) Remove the snap ring from the outside diameter of the

thrust bearing (25A). If the pump is furnished with an

optional “Secondary Containment Seal”, lubricate the

O-rings (324, 325) and the inside diameters of the frame

(26) where the "O" rings (324, 325) seal with a light oil.

Carefully slide the outer magnet assembly (167) into the

frame (26) until the snap ring groove in the outboard

bearing (25A) appears on the outboard bearing cover

(28) end of the frame (26). Install the snap ring into the

groove in the outboard bearing (25A).

j) Tighten the bearing lock nut (31) while holding the drive

shaft (29A) against rotation with a hook spanner in the

keyway of the drive shaft (29A). Bend one of the bear-

ing lock washer (31A) tabs into one of the slots in the

bearing lock nut (31) to keep the nut tight.

Place the outboard bearing cover (28) over the end of the

drive shaft (29A) and bolt it to the bearing housing (26),

tighten the bolts to 20 Ft. Lb. Set this assembly aside and

cover it with a clean cloth to restrict the accumulation of

ferrous particles on the magnet surfaces.

k) Press the casing cover ring assembly (195) into the

casing cover (22) with the stepped side of the assembly

facing out from the casing cover (22). CAUTION: Wear

Pump Sizes

1 x 11/2x 6

11/2x 3 x 6

1 x 11/2x 8

2 x 3 x 6

11/2x 3 x 81/2

2 x 3 x 81/2

3 x 4 x 81/2

1 x 2 x 10

x 3 x 10

2 x 3 x 10

3 x 4 x 10

4 x 6 x 10

Ductile Iron 250 psig

316 Stainless Steel 275 psig

Alloy 20 230 psig

Ductile Iron 250 psig

316 Stainless Steel 275 psig

Alloy 20 230 psig

Ductile Iron 250 psig

316 Stainless Steel 275 psig

Alloy 20 230 psig

⁄

Refer to Allowable Working Pressure vs Pumping Temperature on page 7.

24 5

Any loose metal attracted to the magnets must be completely

removed before re-assembly; therefore, attempt to keep the

surfaces as clean as possible.

f) Continue disassembly on a clean, wooden (nonferrous)

surface.

g) Use an Allen wrench to remove the eight socket head

cap screws (149B) which retain the clamp ring (149) to

the casing cover (22). Remove the clamp ring (149), the

containment shell (150) and the containment shell gasket

(77G). The clamp ring dowel pin (149A) may also be

removed if so desired.

h) Remove the impeller nut (12), the impeller washer (12A)

and handle from the pump shaft (29), or remove the

optional eye bolt.

i) Slide the inner magnet assembly (175), pump shaft

(29), rear thrust collar (210), bearing spacer (17), and

journal sleeves (200) from the casing cover (22) and

bearing bushings (182).

j) Press the pump shaft (29) with the sleeves (200) and bear-

ing spacer (17) from the inner magnet assembly (175) and

remove the rear thrust collar (210) from the inner magnet

assembly (175).

k) Store the inner magnet assembly (175) in a ziplock

plastic bag, or some similar container, as soon as

possible to reduce the amount of material which might

be attracted by the magnetic field. Any such material is

difficult to remove.

1) Remove the inner rotor key (171A) from the pump shaft (29).

m) Pull the journal sleeves (200) and the bearing spacer

(17) from the pump shaft (29). The journal sleeves (200)

may be tight on the pump shaft (29) and require sub-

stantial pull. If the journal sleeves (200) do not need to

be replaced, do not remove them. If they do need to be

replaced, and you cannot pull them off, you can fracture

them by placing them in a vice and closing it.

CAUTION: This operation will fling sharp particles.

Wear face shield, gloves, and a long sleeved shirt

during this operation and be careful to not squeeze

on the bearing spacer (17). Remove and discard the

sleeve gaskets (77H).

n) Remove the four tolerance rings (200B) from the pump

shaft (29) and discard them.

o) CAUTION: Strong magnetic field - steel wrenches will be

attracted. A protective pad will make the job easier. Coil a

piece of 1/8" thick rubber gasket sheet - cut 3-1/2" by 14"

for Frames I & II or 4" by 17" for Frame III - into a cylinder

and insert it into the bore of the magnets in the outer magnet

assembly (167) to protect the face of the magnets.

p) Remove the four outboard bearing cover cap screws

and pull the outboard bearing cover (28) off the end of

the drive shaft (29A).

Bend the tab of the bearing lock washer (31A) out of

the slot in the bearing lock nut (31) and loosen the

bearing lock nut (31) about a half turn while holding

the drive shaft (29A) against rotation with a hook

spanner in the keyway of the drive shaft (29A).

q) Remove the snap ring from the outer race of the out-

board bearing (25A). Do not remove the bearing lock

nut (31). Push the outer magnet assembly (167), drive

shaft (29A), inboard bearing (25) and outboard bearing

(25A), as a unit, from the frame (26). If the pump was sup-

plied with an optional “Secondary Containment Seal”, it

will also come out of the frame with the above unit.

r) Remove the bearing lock nut (31) and bearing lock

washer (31A) and press the drive shaft (29A) through

the outboard bearing (25A) and the outer magnet

assembly (167). CAUTION: Do not strike the magnets

with the drive shaft (29A) as you are removing it, the

magnetic field will attract the shaft. The rubber gasket

sheet (described in paragraph o) inserted into the bore

of the magnets before removing the rotor shaft will help

to protect the magnets’ inner diameter. Also, support the

end of the outer magnet assembly (167) on a sheet of

gasket material when performing this operation to

protect the face of the assembly.

s) If the pump has the optional “Secondary Containment

Seal”, pull the gland (13), mechanical seal (95) and lip

seal (76) as an assembly from the outer magnet assembly

(167). Remove the lip seal (76), mechanical seal (95)

and O-rings (324 and 325) from the gland (13).

Remove drive shaft O-ring (77L) from the outer magnet

assembly (167). Remove the frame gasket (77K) from the

casing cover (22).

t) Press the inboard bearing (25) from the outer magnet

assembly (167). Store the outer magnet assembly (167)

in a zip-lock plastic bag, or some similar container, as

soon as possible to reduce the amount of material which

might be attracted by the magnetic field. Any such

material is difficult to remove.

u) Remove the four cap screws (180A) which retain the bearing

cartridge (180) to the casing cover (22). Slide the bearing

cartridge (180) from the casing cover (22). The flange of the

bearing cartridge (180) is tapped to accept two jackscrews

to facilitate disassembly if necessary.

v) Remove the casing cover ring assembly (195) by prying it

from the casing cover (22). Remove only if it is to be

replaced. The inner component is made of carbon and will

most likely be broken during removal. CAUTION: Wear

face shield, gloves, and a long sleeved shirt during this

disassembly as the carbon ring is under compression and

may fly apart.

w) If the pump has a removable frame foot (9), it can be

removed from the frame (26) if so desired.

x) Clean all of the parts thoroughly and inspect them for wear

and/or damage. Make certain that all ports, lubrication

grooves, and flow passages are completely clean and free

of any debris. Replace parts as required. We recommend

that you always replace all gaskets, lip seals, O-rings, bear-

ings and tolerance rings whenever the pump is disassembled.

Store the magnetic parts (167 & 175) in an area free from

loose ferrous articles and particles.

STANDARD MATERIALS OF CONSTRUCTION

Part # Part Name Class 22 Class 50 Class 60

3 Impeller Cast Iron (1) 316 S/S (2) Alloy 20 (3)

4 Impeller Key 316 S/S (15) 316 S/S (15) Alloy 20

5 Casing Ductile Iron (4) 316 S/S (2) Alloy 20 (3)

5A Casing Drain Plug Steel 316 S/S (15) Alloy 20

9❍Frame Foot Cast Iron (5) Cast Iron (5) Cast Iron (5)

9F Frame Foot Jack Bolt Steel Steel Steel

9G Frame Foot Jack Bolt Nut Steel Steel Steel

12 Impeller Nut 316 S/S (15) 316 S/S (15) Alloy 20

12A Impeller Washer 316 S/S (15) 316 S/S (15) Alloy 20

12B Impeller Spring Washer 316 S/S (15) 316 S/S (15) Hastelloy C

12D Locking Set Screw Steel 316S/S (15) Hastelloy C

13 ▲Gland 316 S/S (15) 316 S/S (15) 316 S/S (15)

17 Bearing Spacer 316 S/S (15) 316 S/S (15) Alloy 20

22 Casing Cover Ductile Iron (4) 316 S/S (2) Alloy 20 (3)

25 Inboard Bearing Steel Steel Steel

25A Outboard Bearing Steel Steel Steel

26 Frame Ductile Iron (4) Ductile Iron (4) Ductile Iron (4)

28 Outboard Bearing Cover Cast Iron (5) Cast Iron (5) Cast Iron (5)

29 Pump Shaft 316 S/S (6) 316 S/S (6) Alloy 20 (7)

29A Drive Shaft Steel (8) Steel (8) Steel (8)

31 Bearing Lock Nut Steel Steel Steel

31A Bearing Lock Nut Washer Steel Steel Steel

76 ▲Lip Seal Viton (10) Viton (10) Viton (10)

77 Casing Gasket Teflon (16) Teflon (16) Teflon (16)

77G Containment Shell Gasket Viton (10) Viton (10)

77H Sleeve Gasket Aramid Fiber Teflon (16) Teflon (16)

77L ▲Drive Shaft O-ring Viton (10) Viton (10) Viton (10)

95 ▲Mechanical Seal Carbon/416ss Carbon/416ss Carbon/416ss

149 Clamp Ring 316 S/S (15) 316 S/S (15) 316 S/S (15)

149A Clamp Ring Dowel Steel Steel Steel

149B Clamp Ring Screw Steel Steel Steel

150 Containment Shell Hastelloy C (9) Hastelloy C (9) Hastelloy C (9)

163A Outer Rotor Key Steel Steel Steel

167 Outer Magnet Assembly Sam. Cobalt (11) Sam. Cobalt (11) Sam. Cobalt (11)

171A Inner Rotor Key 316 S/S (15) 316 S/S (15) Alloy 20

175 Inner Magnet Assembly Sam. Cobalt (12) Sam. Cobalt (12) Sam. Cobalt (13)

180 Bearing Cartridge

181 Bearing Housing Steel 316 S/S Alloy 20

182 Bearing Bushing Silicon Carbide Silicon Carbide Silicon Carbide

182A Bearing Dowel 316 S/S 316 S/S Alloy 20

180A Bearing Housing Screw 316 S/S 316 S/S Alloy 20

190 Casing Ring Assembly Carbon/316 S/S Carbon/316 S/S Carbon/Alloy 20

195 Casing Cover Ring Assembly Carbon/316 S/S Carbon/316 S/S Carbon/Alloy 20

200 Journal Sleeve Silicon Carbide Silicon Carbide Silicon Carbide

200B Tolerance Ring Hastelloy-C (9) Hastelloy-C (9) Hastelloy-C (9)

210 Thrust Collar Silicon Carbide Silicon Carbide Silicon Carbide

210A Thrust Collar Dowel 316 S/S (15) 316 S/S (15) Alloy 20

324▲Gland 0-ring Viton (10) Viton (10) Viton (10)

325▲Gland 0-ring Viton (10) Viton (10) Viton (10)

❍Frame I has foot cast integral with frame

▲Optional parts for secondary containment seal

1) ASTM A-278 Class 35

2) ASTM A-744 Grade CF8M

3) ASTM A-744 Grade CN-7M

4) ASTM A-395 Grade 60/40/18

5) ASTM A-48 Class 20

6) ASTM A-276 Grade 316

7) ASTM B-473 Grade-87

8) Alloy Steel 125TS, 100YP

9) ASTM B-575, C-276

10) Viton-Reg. Trademark of E.I. DuPont

deNemours & Co.

11) Samarium Cobalt magnets in steel assembly

12) Sam. Cobalt magnets in 316 S/S assembly

13) Sam. Cobalt magnets in Alloy 20 assembly

14) Buna “N” Rubber

15) AISI - 316 S/S

16) Teflon - Reg. Trademark of E.I. Dupont

deNemours & Co.

Teflon Encased Viton

(10 & 16)

6 23

Use mechanical lifting equipment to lift assemblies and components.

Do not apply heat to parts to assist in disassembly. Explosion

could occur causing personal injury, death, and/or damage to

the equipment.

Do not attempt to drill, saw or otherwise cut parts to remove

them. Explosion and/or fuming could occur causing personal

injury, death and/or equipment damage.

Do not hammer on any parts. Personal injury and/or damage

to equipment may occur.

WARNING—EXTREME HAZARD TO PERSONS WITH PACEMAKERS:

DO NOT WORK IN CLOSE PROXIMITY WITH UNASSEMBLED

OR DIS-ASSEMBLED MAGNETIC PARTS WITHOUT FIRST CON-

SULTING YOUR PHYSICIAN. IT IS POSSIBLE THAT THE STRONG

MAGNETIC FIELD ASSOCIATED WITH THESE PARTS COULD

RESET YOUR PACEMAKER HEART RATE OR CAUSE OTHER

SERIOUS PROBLEMS.

CAUTION: This unit contains powerful magnets. Personal injury

could occur if parts are not adequately restrained when in the

presence of the magnetic field. Remove your watch as the magnetic

field will ruin it. Proceed with dis-assembly in an area which has

been cleared of loose, ferrous articles and particles. A wood bench

is the preferred work top, but a steel bench, with a 3/4" plywood

board laid on top, will suffice.

If there is any question about the strength of the magnetic coupling,

it should be checked at this time.

Measure the strength of the magnetic coupling (the attracting force

between the inner magnet assembly (175) and the outer magnet

assembly (167)) to see if the magnets are still capable of transmit-

ting the needed power. Hold the impeller (3) against rotation by

inserting a piece of flat steel into it’s periphery between the blades

for use as a lever. DO NOT use the impeller nut (12) to resist the

torque. Use a torque wrench to apply torque to the coupling end of

the drive shaft (29A).

Apply torque gently and evenly until you feel a “slight” softening of

resistance, and read this torque. Do not continue to increase the

torque beyond this point as the magnets will disengage (decouple)

and jump one sixth (60 degrees) of a revolution. If the magnets

disengage and “jump” the shock could break the internal bearing

components.

Compare the torque reading you obtain with the chart below for

the size of the magnetic coupling in your pump.

The number of rows of magnets in your pump will be shown in

the paperwork for that particular pump. If you do not have that

information at hand, you can measure the axial length of the

magnets in the outer magnet assembly (167) and compare it

with the value shown in the chart above for your particular

pump size. This, of course, can not be accomplished until the

pump is further disassembled.

If the torque you obtain is less than the minimum value shown

in the chart, the inner magnet assembly (175), the outer mag-

net assembly (167), or both need to be replaced. Return these

to Dean Pump for determination of which or both are bad.

To further dismantle the pump, perform the following steps in

the sequence shown

a) Insert a piece of flat steel into the periphery of the

impeller (3), between the blades of the impeller (3), to

restrain it from turning while loosening the locking set

screw (12D), and then the impeller nut (12) (both right

hand threads). Remove the locking set screw (12D),

from the impeller nut (12),and throw it away. Remove

the impeller nut (12), the impeller spring washer (12B),

the impeller washer (12A), the impeller (3), the impeller

key (4) and the front thrust collar (210).

b) Make a handle by drilling a hole in the middle of a

piece of flat steel bar stock. For Frame I & II pumps, use

a 1/2" or 5/8" thick, 1-1/2" or 2" wide, 15" to 18"

long bar and drill a 3/4" or 13/16" diameter hole. For

Frame III pumps, use a 1/2" or 5/8" thick, 2" or 2-

1/2" wide, 16" to 20" long bar, and drill a 1-1/4" to

1-3/8" diameter hole. Place this handle over the pump

shaft (29) and replace the impeller washer (12A) and

impeller nut (12).

An optional eye bolt is available from Dean Pump which

screws onto the end of the pump shaft to facilitate lifting

instead of the bar described above. The eye bolt would

provide a place to hook a hoist.

c) Remove the two cap screws which hold the frame (26)

to the casing cover (22).

d) Stand the unit up on end so that the pump shaft axis is

vertical and the unit is resting upon the face of the

coupling hub. Support the pump in this position.

Use a small hoist hooked to the flat bar handle

described in paragraph (b) or to the optional eye bolt

mentioned in paragraph (b). Using great caution, lift

the inner rotating assembly out of the frame (26).

CAUTION: the assemblies which you are separating contain

very strong magnets which will resist the separation. You

must have both assemblies held firmly as they are pulled

apart because the energy in the magnets will work to

“snap” them back together like a strong spring.

DO NOT attempt this separation manually due to the

possibility of personal injury and damage to equipment.

e) CAUTION: The inner (175) and the outer (167) magnet

assemblies are now exposed and will attract any fer-

rous metal which comes within about four inches.

Wrenches will “snap” rapidly against the magnets and

pinch fingers or chip the magnets.

Pump Size Rows of Magnets/Length

123456

.6” 1.1” 1.7” 2.3” 2. ” 3.4”

1 x 11

2x 6 7.5 16.7 27.2 38.4 NA NA

2x 3 x 6 7.5 16.7 27.2 38.4 NA NA

1 x 11

2x 8 7.5 16.7 27.2 38.4 NA NA

2 x 3 x 6 7.5 16.7 27.2 38.4 50.3 62.4

2x 3 x 81

27.5 16.7 27.2 38.4 50.3 62.4

Rows of Magnets/Length

All Other 12345

Pump Sizes . ” 1.5” 2.3” 3.0” 3. ”

22.8 58.2 90.6 125 159

ALLOWABLE WORKING PRESSURE VS. PUMPING TEMPERATURE

22 7

MINIMUM TORQUE INFOOT-POUNDS

f) Flush each sub-system with a compatible, non-toxic, non-

hazardous, stable liquid. Drain into individual containers

for each fluid. Disconnect and remove all auxiliary piping.

g) Carefully bleed off any pressure remaining in the pump.

Pressure remaining in the pump will be dependent upon

the pressure in the system when the pump was stopped;

the quality, type, and condition of the isolation valves;

the thermal expansion values of the fluid and the pump

material; and the change in the vapor pressure of the

fluid between the temperature at the time the isolation

valves were closed and the ambient temperature.

Bleeding must be through a valved drain line from the

casing drain piped to a closed container mounted lower

than the pump. The container must be arranged with a

relief passage to some point where pressure and fumes

will not be harmful to personnel. The container must also

have a level device so that determination can be made

that sufficient fluid has been drained to empty the pump

cavity and the volume of fluid that was contained in the

run of suction and discharge pipe between the isolation

valves and the pump. After the initial rush of fluid from

the pump relieves the pressure, the drain valve can be

opened further to speed the draining operation. When

fluid quits running into the drain tank, gage the volume

to see if it is sufficient to have fully drained the contents

of the pump and the suction and discharge pipes

between the isolation valves. Now drain pumpage from

the containment shell drain connection in the same man-

ner as above for the casing drain.

If the system was constructed without any drain connec-

tions, it will be necessary to consult the designers of the

system for safe draining procedures.

h) Now drain any small piping, that contains the fluid

pumped, from all low points into the same container

used to drain the pump. Do not drain any other fluids

(different then the pumpage) into this container as they

may not be compatible. Personal injury, death, and/or

equipment damage could occur. Remove the frame drain

plug which will drain any fluid that may have leaked

into the frame. Drain and remove any auxiliary piping.

Remove the 1/4” NPT plug from the secondary contain-

ment seal drain connection in the bottom of the frame

(26). Drain the oil and/or any residual pumpage from a

possible leak of the primary pressure containment.

Remove the frame foot mounting bolts.

WARNING: Even though it might appear that the cavity being

drained has completely drained, be extremely careful about

opening the system and/or opening the pump. If something

solid in the pumpage moves to the vicinity of the drain connec-

tion, it could seal-off the drain and maintain pressure in the

cavity thought to have been drained. It is also possible that the

isolation valves are not sealing and therefore allowing liquid to

flow from the system into the pump. Personal injury, death

and/or equipment damage may occur if great caution is not

exercised.

i) Because of the above possibility, when you loosen the

gasketed joint at the back of the casing (5), loosen the

casing bolts (5D) only one full turn, and then use jack

screws in the flange of the casing cover (22) to break the

gasket seal. If fluid and/or pressure remains in the pump

it will spray out now. Use extreme caution, wearing

protective gear, to avoid injury. Do not proceed with

disassembly until leakage ceases completely. If leakage

does not cease, the isolation valves may not be sealing.

Note that if the pump was purchased without a drain, the

pump will contain fluid which will flow out at the time the

bolts are loosened and the gasket seal is broken.

WARNING: When you open the pump, the fluid will be exposed

to the atmosphere and personnel in the area. For the safety of

all involved, the risk of exposure can be reduced by flushing the

cavity that was just drained with a compatible, non-toxic, non-

hazardous, stable liquid, before disassembling the pump.

j) Remove the casing bolts (5D) and using a mechanical lifting

apparatus to support the weight, pull the frame assembly

from the casing (5).

In some instances, it may be necessary to remove the

coupling hubs from the drive shaft and the motor shaft to

allow the removal of the frame assembly.

k) Flush the wetted parts, now exposed, with a compatible,

non-toxic, non-hazardous, stable liquid.

l) Remove the gasket from the face of the casing (5) or the

casing back cover (22) dependent on which one the gasket

may have adhered to. The type of gasket and material of

construction will vary with service requirement. Attack by

prying and then, if necessary, layering off the old gasket

with a sharp scraper, attempting to remove it in the

largest possible pieces. Take care to not scratch the metal

surfaces. Wear heavy leather, long sleeve work gloves

when using the scraper. Wet the gasket before and during

the scraping operation to reduce the possibility of fibers

becoming airborne. Wear a respirator during this operation

and until all debris has been disposed of in a plastic

bag. Remove all of the gasket material down to clean

metal surfaces on both parts that contacted the gasket.

Place all of the gasket residue in a plastic bag, seal the

bag and dispose.

m) Remove the casing ring assembly (190) by prying it out

of the casing (5). Remove only if it needs to be replaced.

The inner component is made of carbon and will most

likely be broken during removal. CAUTION Wear face

shield, gloves and a long sleeved shirt during this

disassembly as the carbon ring is under compression

and may fly apart.

n) The frame assembly of the pump can now be moved to

a more convenient location for further disassembly. Use

mechanical lifting equipment to move assemblies and

components.

DISASSEMBLY OF THE “FRAME ASSEMBLY”

WARNING: Use only high quality tools.

Flush parts as disassembled to remove hazardous residue from

the pumpage and/or sub-system fluids.

Wear protective equipment as advised at the beginning of this

section.

PUMP FOUNDATION

The pump foundation provides rigid support to the baseplate

and maintains the alignment of the pumping unit. Baseplates

are designed to rigidly support the pump and driver without

vibration or distortion only when they are properly set, leveled

and secured to the foundation.

The purchaser may elect to mount the pump without grouting

the baseplate. In any case, the baseplate must be fully support-

ed by the customer's mounting means to prevent vibration and

distortion.

SUCTION AND DISCHARGE PIPING

Suction and discharge nozzle sizes of Dean pumps are select-

ed for proper performance of the pumping unit and are not

intended to determine the sizes of the suction and discharge

pipes. Pipe sizes must be determined by the user based on the

system requirements.

Suction piping should have a minimum friction loss and thus

should be as short and straight as possible with a pipe diameter

as large as economically feasible for the flow rate handled.

The suction pipe should be straight, for a minimum of eight

pipe diameters, into the pump. Suction piping should never be

smaller in diameter than the suction nozzle size. When the suction

piping is larger than the suction nozzle size, an eccentric

reducer is required at the suction flange and must be installed

with the taper located on the underside to eliminate air or

vapor pockets.

Discharge piping may be the same size as, larger, or smaller

than the discharge nozzle as the system flow may demand.

In new installations or rebuilt systems, dirt, pipe scale, welding

slag and general construction debris may get into the piping. It

is important to prevent this material from entering the pump

and damaging pump parts. Bearings and magnets are espe-

cially subject to damage even by very small particles. To pre-

vent damage, a strainer or filter installed in the suction line is

recommended. Commercially available strainers or filters as

recommended by their manufacturers can do an excellent job.

Another form may be a cone strainer of 100 mesh installed in

a pipe cross placed with the cross in a vertical position and uti-

lizing blank flanges to cover the openings. In this set-up, the

top flange may be opened for inspection and the bottom flange

opened for cleanout. Ferrous particles in the pump system will

be attracted by the magnetic coupling and can cause rapid

wear of the containment shell. A magnet installed in the suction

strainer will attract the smaller ferrous particles which could

pass through the suction strainer. The magnet must be of a

material which can tolerate the corrosive effects of the liquid

and the temperature. In addition, special filtering and flushing

guards may be required. Consult your Dean representative.

Suction line screens or strainers may usually be removed when,

after several days of use, no dirt has been collected and the

system is clean.

Remember that screens and filters in the suction line are restrict-

ing devices which reduce the net positive suction head (NPSH)

available to the pump and should be considered at the time the

system is designed.

Whenever a filtering device is used, some operating procedure

must be established, to assure that restriction of liquid flow, to

the pump does not occur. As the filter traps debris, flow

becomes more and more restricted. The rate of plugging is

dependent upon the free area of the filter selected, and the

amount of debris in the system. Do not allow debris to accumu-

late to the point where the NPSH available to the pump is as

low as the NPSH required by the pump.

If the suction and discharge lines are insulated, be sure that no

insulation is placed on the pump except at the casing. It is

especially important that no insulation be placed on any air

cooling surfaces of the pump or its auxiliary piping.

INSTALLATION

TYPICAL FOUNDATION LAYOUT

TYPICAL PUMP PIPING

8 21

WARNING: Work must be performed only by thoroughly

trained and qualified personnel to assure quality repair and to

reduce the possibilities of injury to personnel and/or damage

to equipment. If you do not have personnel who are capable of

safe quality repair of this equipment, we advise you to return

the equipment to DEAN PUMP to be repaired.

Always wear the appropriate protective apparel when working

on or around the pumping equipment. Safety glasses with side

shields, heavy work gloves (use insulated work gloves when

handling hot items), steel-toed shoes, hard hat, and any other

protective gear as needed for protection. One example of other

gear would be breathing apparatus when working near toxic

materials.

CAUTION - EXTREME HAZARD

HEART. Magnets in/from this pump can upset the timing of

heart pacemakers and make them malfunction. This caution

cannot be overstated due to the health risk involved.

EYES, HANDS, FINGERS, EXPOSED FLESH. Brittle materials

(such as silicon carbide and carbon used for wearing parts)

can fracture and propel hard, sharp particles causing serious

personal injury. Protective equipment must be utilized when

servicing these parts.

The magnets are also very brittle and, if cracked or fractured,

can propel hard, sharp particles causing serious personal

injury. Protective equipment must be utilized when servicing

these parts.

The magnets used in this pump are very strong and can cause

parts and tools to slam together injuring hands and fingers.

This could also crack the magnets and propel particles as

cautioned above.

CAUTION: In addition to safety related cautions due to the

mechanics of a magnetically coupled pump, safety precautions

must be taken due to the nature of the liquid being pumped.

When it is necessary to open the pump and/or the pumping

system the fluid will be exposed to the atmosphere and personnel

in the area. For the safety of all involved, the risk of exposure of

personnel to the hazards of the pumpage can be reduced by

flushing the entire system with a compatible, non-toxic, non-

hazardous, stable liquid before opening the pump or the system.

In all cases, where the system is flushed or not, use the utmost

care around the pumpage and the pumping system.

Sealless pumps often handle flammable, toxic or hazardous

liquids. The user shall take caution that all the fluid is drained

from the containment shell before disassembly and repair work

is begun.

If the pump was not purchased with casing and shell drains, a

considerable amount of liquid will remain in the pump.

When the pump is handling flammable, toxic or hazardous fluids,

the internals of the pump must be properly decontaminated by

qualified personnel before disassembly. This may include flushing

the pump and system before disassembly. Prior to flushing,

decontamination and disassembly the Material Safety Data Sheet

(MSDS) for the pumped liquid shall be reviewed to ensure proce-

dures and precautions as specified are adhered to. Proper attire

shall be worn during disassembly and decontamination.

Pumps requiring factory repair must not be returned or trans-

ported until a certified and documented decontamination has

taken place.

Decontamination certificate and MSDS must be part of the

shipment package returned for factory repair.

CAUTION: In spite of thorough cleaning and flushing prior to

maintenance of sealless pumps, some contamination of pump

internals may exist. Repair shop personnel should be advised

of the nature of the hazardous liquid handled, and of the

requirement for protective clothing and equipment needed

during maintenance work. Care must be taken in disposing

of residue and contaminated parts being replaced.

Use only top quality tools.

REMOVING THE PUMP’S ”FRAME ASSEMBLY

“

The Dean magnetic coupled pump, with “back pull out” cen-

trifugal design, allows the complete disassembly of the pump

without disturbing the suction or discharge piping.

a) Stop the pump. Turn off the power supply (electricity,

steam, etc.) to the pump driver (motor, turbine, engine,

etc.) and lock the switching device so that it can not be

restarted. Tag the switching device so that no one will

attempt to restart the unit.

b) Close the suction and discharge valves completely to iso-

late the pump from the system. Lock the valves in the

closed position and tag them so that no one will attempt

to open them.

c) Turn off, lock out, and tag all sub-systems and auxiliary

equipment and auxiliary supply lines to isolate the pump-

ing unit from any and all power, energy, and/or fluids.

WARNING: Do not attempt to perform any work on the unit until

you are confident that the pump and its contents have been

stabilized at ambient temperature, and atmospheric pressure.

Put on protective wear to protect human tissue from attack by

fluids contained in the pump and any sub-systems, and from any

vapors or fumes that could possibly be released from these fluids.

This could mean breathing apparatus face shields, heavy long

sleeve rubber gloves, rubber apron, hood, and possibly more,

dependent, of course, on the properties of the fluids involved and

the installed drain and vent piping arrangement. Personal injury

and/or death can occur if adequate precautions are not taken

with regard to the fluid, the installation and the possibilities of

the release of fluid, vapors, and/or fumes.

d) Remove the coupling guard. Remove the coupling spacer.

e) Drain all the fluids from all the auxiliary sub-systems

(lubrication, cooling, heating, etc.) that are connected to

the pump. Drain each fluid into a separate container.

Use caution required for each fluid after reading the

MSDS (Material Safety Data Sheet) for each.

DISASSEMBLY AND ASSEMBLY PROCEDURES If the pump has optional drain connections, there will be a

drain connection in the bottom of the casing (5) and a contain-

ment shell drain in the bottom of the casing cover (22). Do not

connect these two drains together, as it would cause a “short

circuit” in the internal lubrication and cooling flow. This would

cause severe failure.

BASEPLATE MOUNTING AND ALIGNMENT

The sequence of mounting which must be observed for proper

baseplate and pump mounting is

1) Place baseplate, with pump and driver mounted there-

on, on the pump foundation.

2) Use wedges under the baseplate edges, adjacent to each

foundation bolt, to properly level the unit. Check this with

a spirit level. Tightly pull down the baseplate mounting

bolt nuts and recheck for levelness. Correct if necessary.

3) Check driver rotation by removing the coupling spacer

and bumping the motor starting button. Operating the

pump in reverse rotation may cause extensive damage.

If driver rotation is correct, proceed with alignment. If

not, reconnect the motor wiring properly and again

check for rotation. When the driver rotation is correct,

proceed with the alignment.

4) Align the driver to the pump. (See PUMP AND DRIVER

ALIGNMENT.)

5) Grout the baseplate. Do not grout the baseplate to the

foundation until the pump and driver are correctly

aligned.

6) Determine that piping to the pump is in exact alignment

with the pump flanges and imposes no piping strain on

the pumping unit. When the alignment is exact, the

piping may be bolted in place.

7) Recheck pump and driver alignment to ensure that no

distortion of the pump unit has been caused by piping

strain. Correct piping if misalignment has occurred and

again align pump and driver.

8) When alignment is correct, install the coupling spacer.

9) The pump and driver alignment must again be checked

at the operating temperature and alignment corrected

under the hot condition.

10) After about two weeks of normal pump operation, the

pump and driver alignment should again be checked

under the hot condition. If alignment is still correct, the

driver feet may be doweled to the baseplate. If the

alignment has changed, realign the unit and recheck

after two weeks.

PUMP AND DRIVER ALIGNMENT

Proper running life of a pump and driver unit depends on the

accuracy with which the axis of the driver shaft coincides with

the axis of the rotor shaft when the unit is running. Although

pumps and drivers are check aligned at the factory, handling

during shipment and installation will cause the alignment to

change. The pump and driver alignment must always be

checked and corrected before the baseplate is grouted to the

foundation and again before the pump is first started. If the

baseplate mounting instructions have been carefully followed,

no difficulties in making the alignment should be experienced.

Failure to properly align the unit will result in vibration and

short bearing life, and unit failure.

Pumps are not constructed to be used as pipe anchors. Both

suction and discharge piping must be supported independently

of the pumping unit and thermal expansion joints provided to

guard against expansion loads on the pump. Pipes should be

anchored between the expansion joint and the pump and as

closely to the pump as possible. Failure to provide proper

piping support and expansion joints may impose strains on

the pumping unit which will result in serious misalignment.

Maximum allowable piping loads are shown on page 11 of

this manual.

No allowance for thermal expansion is made for motor driven

units in mounting the driver. Allowance for turbine mounting

should be in accordance with the turbine manufacturer‘s

recommendations. Final alignment must always be checked

and corrected at the operating temperatures of the pump

and driver.

Misalignment of the two shafts is of two kinds. The first of these

is angular misalignment where the axis of one shaft is at an

angle from the other. The other is offset alignment where the

center of one shaft is offset from the center of the other shaft.

These effects usually occur together so that both angular and

offset misalignment are present.

Coincident alignment of the driver and rotor shaft is measured

at the faces of the coupling hubs. Because of the variety of

coupling types furnished at customer’s request, the procedure

given here is general in nature but may be applied by simple

adaption to most coupling types.

The first step is to remove the spacer from the coupling. To one

of the remaining coupling hubs, firmly seated on the shaft,

attach a dial indicator. Let the indicator button ride on the face

of the other coupling hub and near the outside diameter. Rotate

the shaft on which the dial indicator is mounted, allowing the

indicator button to move on the stationary coupling hub. The

indicator dial movement will show the difference in distance

between the two hubs. This indicates the amount of angular

misalignment between the hubs and, therefore, the shaft axes.

Good practice suggests alignment to within 0.002" T.I.R.

20 9

10 19

The internal circulation flow path through the bearings and the

magnetic coupling is supplied with discharge pressure and

returns to discharge pressure. The differential pressure required

to do this is supplied by an impeller built into the outer end of

the inner magnet assembly (175). This flow provides cooling to

the magnets (175) and the containment shell (150) and also

lubrication as well as cooling to the bearings (182), journal

sleeves (200) and thrust collars (210).

The flow (as shown in the drawing above) is fed from the

perimeter of the impeller (3) and flows through a passage in

the casing cover (22) to an area between the bearings (182).

The flow splits at this point with part of the flow proceeding

between the front bearing (182) and journal (200), past the

front thrust collar (210), through the balance holes in the

impeller (3) back to the suction of the pump. The rest of the flow

passes through the bearing spacer (17) and the pump shaft

(29) to the end of the inner bearing assembly (175) where the

impeller blades on this assembly increase the pressure, forcing

the pumpage between the inner magnet assembly (175) and

the containment shell (150), through a passage in the casing

cover (22) back to the perimeter of the impeller (3). A small

amount of this flow is diverted before it can enter the passage

in the casing cover (22) and passes between the rear bearing

(182), thrust washer (210) and journal (200) and then returns

to the bearing spacer (17) where it merges with a new supply

of internal circulation flow.

INTERNAL CIRCULATION FLOW PATH

To check the offset alignment, mount the dial indicator as

above except with the indicator button on an outside diameter

of the stationary coupling hub. Rotate the shaft on which the

dial indicator is mounted, allowing the indicator button to ride

on the outside diameter of the stationary hub. The indicator

dial movement will show the difference in the center locations

of the two shafts. Good practice suggests alignment to within

0.002" T.I.R.

Angular and offset alignment is adjusted by placing thin metal

shims under the driver mounting feet to bring the drive into

exact alignment with the bolted down pump. If misalignment

is of major proportions, the baseplate has been improperly

installed on the foundation and must be releveled before

proceeding with alignment.

Moderate alignment adjustments may be made by using the

jack bolts provided on some frame feet. Loosen the frame foot

hold-down bolt(s) and the jack bolt lock nuts. Adjustments of

the jack bolts may then be made.

After each change, by shims or jack bolts, it is necessary to

recheck both angular and offset alignment of the coupling.

After the pump and driver are aligned, tighten all hold-down

and jack bolt lock nuts and then recheck alignment.

Allowable error of shaft alignment is somewhat dependent on

the coupling type. However, the closer the running alignment,

the better the running life will be, as any misalignment applies

loads to both the pump and motor. The greater the misalign-

ment, the greater the load.

GROUTING THE BASEPLATE

Channel type baseplates are made with open ends to allow

easy grouting and do not require grouting holes in the base-

plate. Do not grout the baseplate until the alignment explained

under “Baseplate Mounting and Alignment,” steps 1 through 4

has been completed. Fill the entire void under the baseplate

with grout and firmly embed the baseplate edges.

INDICATOR SETUP TO READ OFFSET MISALIGNMENT

INDICATOR SETUP TO READ ANGULAR MISALIGNMENT

18 11

Part # Part Name

28 Outboard Bearing Cover

29 Pump Shaft

29A Drive Shaft

31 Bearing Lock Nut

31A Bearing Lock Nut Washer

76 ▲Lip Seal

77 Casing Gasket

77G Containment Shell Gasket

77H Sleeve Gasket

77K▲Frame Gasket

77L ▲Drive Shaft O-ring

95 ▲Mechanical Seal

149 Clamp Ring

149A Clamp Ring Dowel

149B Clamp Ring Screw

150 Containment Shell

163A Outer Rotor Key

Part # Part Name

167 Outer Magnet Assembly

171A Inner Rotor Key

175 Inner Magnet Assembly

180 Bearing Cartridge

181 Bearing Housing

182 Bearing Bushing

182A Bearing Dowel

180A Bearing Housing Screw

190 Casing Ring Assembly

195 Casing Cover Ring Assembly

200 Journal Sleeve

200B Tolerance Ring

210 Thrust Collar

210A Thrust Collar Dowel

324▲Gland 0-ring

325▲Gland 0-ring

Part # Part Name

3 Impeller

4 Impeller Key

5 Casing

5A Casing Drain Plug

9❍Frame Foot

9F Frame Foot Jack Bolt

9G Frame Foot Jack Bolt Nut

12 Impeller Nut

12A Impeller Washer

12B Impeller Spring Washer

12D Locking Set Screw

13 ▲Gland

17 Bearing Spacer

22 Casing Cover

25 Inboard Bearing

25A Outboard Bearing

26 Frame

❍Frame I has foot cast integral with the bearing housing.

▲Optional parts for secondary containment seal.

Pump Flanges

Forces Moments ∑Discharge Suction ∑

Fx Fy Fz ∑F Mx My Mz ∑M F & M Fr Mr Fr Mr Fr & Mr

1 x 1.5 x 6 394 267 311 284 556 384 182 350 194 56 267 136

1.5 x 3 x 6 394 270 311 285 556 532 182 395 194 136 270 182

1 x 1.5 x 8 394 222 311 274 556 264 182 321 194 56 222 136

2 x 3 x 6 484 489 519 431 1035 391 260 568 225 234 489 391

1.5 x 3 x 8.5 484 455 519 422 1035 391 260 568 221 136 455 391

2 x 3 x 8.5 484 482 519 429 1035 391 260 568 205 234 482 380

3 x 4 x 8.5 484 488 519 431 1035 391 260 568 185 391 488 391

1 x 2 x 10 484 387 519 407 468 391 260 331 221 56 397 234

1.5 x 3 x 10 484 399 519 407 1035 391 260 568 221 136 399 391

2 x 3 x 10 484 421 519 413 1035 391 260 568 205 234 421 219

3 x 4 x 10 484 473 519 426 1035 391 260 568 185 391 473 391

4 x 6 x 10 454 488 554 433 1202 391 260 645 123 391 454 391

Pump

Size

Frame IFrame II

Frame III

ALLOWABLE PIPING LOADS M300 SERIES PUMPS

NOTES:

1) All forces and moments are considered at, through and

about the three axes x, y and z.

a) All forces (Fx, Fy, Fz, ∑F) and moments (Mx, My, Mz,

∑M) listed under the ”Pump“ section of the chart are

considered at the intersection of the three axes and

apply to the pump as a complete unit.

b) All forces (Fr) and moments (Mr) listed under the

“Flanges” section of the chart are resultant values, and

are considered at the intersection of the axis and the

face of that particular flange.

c) All values are maximums and no value may be exceeded.

The summation of forces (∑F) applies whenever forces

exist in more than one direction. The summation of

moments (∑M) applies whenever moments exist about

more than one axis.

d) All forces are given in pounds.

e) All moments are given in foot pounds.

f) All of these values are good for pumps constructed of

ductile iron, steel, and stainless steels. For pumps of

any other materials, contact the engineering depart-

ment for the allowable piping loads.

2) Forces and moments are limited by reduction of internal

pump clearances and/or a movement of 0.010 inch of

the coupling end of the pump shaft.

∑F (Actual)

∑F (Allowable) +≤1.0

∑M (Actual)

∑M (Allowable)

Fr (Actual)

Fr (Allowable) +≤1.0

Mr (Actual)

Mr (Allowable)

3) The pump and motor shafts must be realigned after the

forces and moments are applied, to reduce the frequency

of bearing and mechanical seal maintenance.

4) The summation of forces (∑F) is obtained by taking the

square root of the sum of squares of the individual forces.

∑F = [ (Fx)2+ (Fy)2+ (Fz)2]1

5) The summation of moments (∑M) is obtained by taking

the square root of the sum of the squares of the individual

moments.

∑M = [ (Mx)2+ (My)2+ (Mz)2]1

6) The three axes are identified as follows

a) The x axis is the same as the axial centerline of the

pump shaft.

b) The y axis is vertical through the center of the

discharge flange and intersects and is perpendicular

to the x axis.

c) The z axis is horizontal through the intersection of

the x and y axes, and is perpendicular to both the

x and y axes.

PUMP SECTION VIEW

To avoid prolonged down time and facilitate rapid repair of

damaged pump parts, Dean recommends the pump user

maintain a minimum stock of spare parts. If the pump service is

critical or the pump parts are of special materials, a spare

parts stock is even more important to the user. Such a spares

inventory may extend from spare bearings and gaskets through

complete casing cover-impeller-frame assemblies prepared for

immediate insertion into the pump casing. Consult your Dean

representative who will assist you in selecting your spares stock.

ORDERING SPARE PARTS

Spare part orders will be handled with a minimum delay if the

following information is furnished by the customer with the order

1) Give the pump serial number and size. These may be

found on the pump nameplate. The serial number is

also stamped on the suction flange.

2) Give the part name, part number and material of construc-

tion. These should agree with the standard parts list.

3) Give the quantity of each part required.

4) Give complete shipping instructions.

SPARE PARTS

OPTIONAL SECONDARY CONTAINMENT SEALING ARRANGEMENT

12 17

PIPING CONNECTIONS FOR M300 SERIES PUMPS - INTERNAL

16 13

These points must be checked after

pump installation and before starting up

the pump.

1) Read the instruction manual

thoroughly and understand it.

2) Review the pump order headsheet

for the service rating of the pump

and any special features.

3) Check all piping connections making

certain they are both tight and in the

proper places. Piping includes flush-

ing, cooling or heating piping.

Be sure that the casing drain and

the containment shell drain are not

connected together.

4) Make certain no insulation has been

placed over any air cooling surfaces

of the pump or its auxiliary piping.

5) Make sure the baseplate has been

properly installed.

6) Check the electrical or steam line

connections to the driver.

7) If the pump is equipped with air

cooled (finned) auxiliary piping,

make sure the drive motor is fan

cooled.

8) Break the coupling by removing

the coupling spacer and bump the

motor starting button to check

motor rotation. Operating the

pump in reverse rotation may

cause extensive damage.

If the driver rotation is incorrect,

reconnect the wiring for proper

rotation and re-check.

9) Check the coupling for proper

alignment of the motor and rotor

shafts. Re-align if necessary.

Replace the coupling spacer.

10) If the pump has the optional

“Secondary Containment Seal”

check to see that it is properly

lubricated.

11) Make sure the pump is filled with

liquid and vented to remove any air.

12) Turn on any cooling or heating to the

pump and/or auxiliary equipment.

13) Rotate the pump shaft by hand to

be sure there is no binding or rub-

bing within the pump or driver.

Correct any difficulties at once.

14) Remove all dirt, waste, tools and

construction debris from the area.

15) Make sure the coupling guard is

securely in place.

16) Start the pump and immediately

check for proper flow and pressure.

17) Perform extra venting procedure if

required. See “Starting the Pump”.

PUMP START-UP CHECKLIST PIPING CONNECTIONS FOR M300 SERIES PUMPS - EXTERNAL

14 15

STARTING THE PUMP

The pump must be primed prior to start-up.

When the source of liquid supplied to the pump is below

atmospheric pressure or located below the pump, priming may

be accomplished in any of the three ways listed below

1) An exhauster may be connected to the discharge piping

between the pump and the discharge shut-off valve.

With the discharge shut-off valve closed and the suction

valve open, the air can be exhausted from the pump

and piping.

2) With a foot valve installed in the suction piping, the

pump may be filled with liquid introduced somewhere

above the pump in the discharge line. A foot valve may

create excessive friction losses and should be taken into

consideration in calculating the available NPSH.

3) A vacuum pump (preferably a wet vacuum pump) may

be used for evacuating air from the pump and piping.

The vacuum pump should be connected in the same

manner as the exhauster (See step 1).

When the source of liquid supplied to the pump is above the

atmospheric pressure or above the pump centerline, the pump

may be filled by venting through a bleed-off line to atmosphere

or back to the pump suction source.

When the pump is supplied with the standard “internal/inter-

nal” flush path, for cooling the magnets and lubricating the

bearings, the containment shell area of the pump is automati-

cally vented when the above procedure is followed. If the

pump is arranged with an “external/ internal” flush path, all

high points in the flush piping must also be vented when filling

to remove any trapped gas (air). If the pump is arranged with

an “external/external” flush path, all high points in the flush

piping must be vented when filling and vented again several

times during the first start up period until the pump reaches

stabilized operating temperature.

It is important that a pump should never be subjected to ther-

mal or pressure shock. The liquid should, therefore, be allowed

to flow into the casing slowly. A centrifugal pump should never

be started until all the parts are up to the temperature of the

liquid to be pumped.

If an external flush system is equipped with cooling water piping,

this should be turned on before filling the pump. Any other

heating or cooling should be turned on before starting the

pump. Turn the coupling end of the rotor shaft to see if the

pump turns freely. If it does not, investigate and correct the

cause before starting the motor.

CAUTION–EXTREME HAZARD TO PERSONNEL: Do not

operate a pump at no flow condition. Do not operate a pump

at a low flow condition, unless provision has been made to

prevent dangerous heat build up within the pump. Operating

this pump with the discharge and/or suction valves closed may

be extremely hazardous. The liquid in the pump will heat up

and this may result in high pressure in the pump in a short

time. Such pressure may result in a rupture of the pressure

containing parts and cause severe hazard to personnel and/or

damage to the system. The heat will also severely damage the

pump.

This pump should never be run without liquid in the casing.

Extensive damage will result, particularly to the sleeve bearings

and the magnets. When the pump is furnished with external

flushing piping, vent liquid through the high points in the pip-

ing system to provide lubrication to the sleeve bearings.

It is important to check the direction of rotation of the pump

before allowing the pump to come up to speed. To check rota-

tion direction, remove the coupling spacer, push the starting

button and instantly push the stop button. This will allow the

motor to turn over a few revolutions and the direction of rota-

tion to be observed. A direction of rotation arrow is shown on

the front of the pump casing. If rotation is incorrect, change the

wiring connections and recheck the rotation. Replace the cou-

pling spacer and the coupling guard. Operating the pump in

reverse rotation may cause extensive damage.

If the rotation direction is correct and the pump properly filled

with liquid, it may now be started.

A centrifugal pump should be started with the suction valve

completely opened and the discharge valve opened a slight

amount.

As soon as the pump is up to speed, the discharge valve must be

opened slowly. A centrifugal pump cannot be operated with the

discharge valve closed without heating up dangerously. During

the first several minutes of operating, watch the pump carefully

for overheating, vibration and other abnormal conditions. If

trouble develops, stop pump at once and correct the problem.

CAUTION – When the pump is started, immediately observe

the discharge pressure gauge and/or the flow meter to confirm

that the pump is actually operating and at the expected values

of pressure and flow.

Operation of a magnetically coupled pump cannot be confirmed

by visual observation of the driver shaft (29A) (outer pump shaft)

rotation. The motor shaft and the driver shaft (29A) (visible,

external pump shaft) may be turning at full speed, but if the

magnetic coupling (inside the pump) has disengaged, the pump

is not moving liquid. This condition, if not stopped immediately,

will cause rapid overheating, equipment damage and possible

rupture of the pressure containing parts.

The M300 series pumps incorporate the latest technology and

are expertly manufactured and assembled to provide long,

trouble free operation. Additional security and safety can be

achieved with the installation of one or more optional monitoring

and protection systems.

1) TEMPERATURE PROBE. Many operational malfunctions

will directly result in a rapid increase in temperature of

the containment shell and/or the return flush liquid.

Temperature probes can be installed in the shell temperature

connection to monitor the containment shell and the

return flush liquid. The output signal from the temperature

probe(s) can be used to sound an alarm and should be

wired to shut down the pump when readings exceed

pre-set limits.

2) ELECTRICAL POWER. Current and power sensing devices

are available, to be mounted in the user's electrical

cabinet, which allows setting to electrical current or

power levels for shut down of the motor. In the event of

a disengagement (de-coupling) of the magnetic coupling,

the lower amperage or power sensed would shut down

the motor to protect the pump from more serious damage.

3) VIBRATION. A transducer is available which mounts on

the frame of the pump to monitor the vibration. It sends a

signal to a vibration switch mounted on the baseplate to

shut down the pump in the event of excessive vibration.

4) PRESSURE SWITCH. A pressure switch can be mounted

to sense pressure from the 1/4" NPT frame connection

or the 1/4" NPT frame drain. Pressure at these connections

would occur in case of a containment shell leakage and

would shut down the motor.

5) LEVEL SWITCH. A liquid level switch can be mounted to

the baseplate to detect leakage through the 1/4" NPT

frame drain in case of a containment shell leak to shut

down the motor.

6) SECONDARY CONTAINMENT SEAL. In the unlikely event

of a containment shell rupture, a secondary containment

sealing device, located in the frame, can be provided for

backup protection against leakage of hazardous liquids

to the atmosphere. If a shell rupture should occur, the

pumpage is contained in the frame surrounding the

containment shell, by a conventional mechanical seal.

CAUTION: The secondary sealing arrangement is provided

for short term emergency backup only and is not intended

for prolonged operation. The pump should be shut down

immediately after the secondary seal is activated. A

pressure or level switch as described above must be used

to sound an alarm and shut down the pump immediately.

The frame drain connection and the secondary contain-

ment seal drain are provided to drain any leakage to a

safe area, before opening the pumping unit for repairs.

PUMP LUBRICATION

The ball type rotor shaft bearings are permanently grease

lubricated and require no additional lubrication.

The sleeve type bearings on the pump shaft are lubricated by

the liquid being pumped through internal flush passages, or

from an external flush. Conditioning of the liquid may be

required (such as filtering or cooling) for proper lubrication.

If the pump is fitted with the optional “Secondary Containment

Sealing Arrangement” it will be necessary to provide lubricant

for the mechanical seal. Use a good grade of rust and oxida-

tion inhibiting, non-foaming, industrial oil of 425-525 SSU

Viscosity at 100°F (ISO 100) for this lubrication.

Remove the oil fill plug from the top of the frame (26) (located

between the ball bearings [25 and 25A] near the coupling end

of the frame). Remove the oil level plug from the side of the

frame (26). Pour oil into the oil fill connection until it runs from

the oil level connection. This will be only about one cubic inch

of oil (approximately 0.5 fluid ounce). Replace the oil fill and

the oil level plugs and tighten.

OPTIONAL PROTECTION SYSTEMS