Goulds Pumps 3199 User manual

Installation, Operation, and
Maintenance Manual
3199

Table of Contents
1 Introduction and Safety ....................................................................................................................................3
1.1 Important Safety Notice.............................................................................................................................3
1.2 Safety Warnings ........................................................................................................................................3
1.3 Safety ........................................................................................................................................................ 4
1.4 General precautions .................................................................................................................................. 5
1.5 Ex Considerations and Intended Use.......................................................................................................7
1.6 Parts .......................................................................................................................................................... 9
2 Installation........................................................................................................................................................10
2.1 Location...................................................................................................................................................10
2.2 Foundation .............................................................................................................................................. 10
2.3 Alignment-initial ....................................................................................................................................... 11
2.4 Piping - general ....................................................................................................................................... 14
2.5 Piping - suction........................................................................................................................................14
2.6 Piping - discharge.................................................................................................................................... 16
2.7 Connection of piping................................................................................................................................ 16
2.8 Check rotation ......................................................................................................................................... 16
2.9 Connection of coupling............................................................................................................................16
3 Preparation for Operation...............................................................................................................................17
3.1 Pump bearings ........................................................................................................................................ 17
3.2 Driver bearings ........................................................................................................................................ 17
3.3 Stuffing box ............................................................................................................................................. 17
3.4 Connection of sealing liquid or grease lubricator (packed box)............................................................... 19
3.5 Connection of piping to quench gland ..................................................................................................... 19
3.6 Connection of cooling water piping ......................................................................................................... 19
3.7 Connection of drain piping....................................................................................................................... 20
4 Starting Pump..................................................................................................................................................21
4.1 Cooling and flushing flows....................................................................................................................... 21
4.2 Check for free turning..............................................................................................................................21
4.3 Priming .................................................................................................................................................... 21
4.4 Adjustment of stuffing box gland ............................................................................................................. 21
4.5 Alignment - final....................................................................................................................................... 21
4.6 Doweling.................................................................................................................................................. 22
5 Operation..........................................................................................................................................................23
5.1 Stuffing box ............................................................................................................................................. 23
5.2 Operating at reduced capacity ................................................................................................................ 23
5.3 Operating at reduced head...................................................................................................................... 23
5.4 Operating with surge conditions in line.................................................................................................... 24
5.5 Operating under freezing conditions ....................................................................................................... 24
6 Troubles Check List ........................................................................................................................................25
6.1 No water delivered .................................................................................................................................. 25
6.2 Not enough liquid delivered.....................................................................................................................25
6.3 Not enough pressure...............................................................................................................................25
6.4 Pump works awhile and then quits..........................................................................................................26
6.5 Pump takes too much power...................................................................................................................26
Table of Contents
3199 Installation, Operation, and Maintenance Manual 1

6.6 Pump leaks excessively at stuffing box...................................................................................................26
6.7 Pump is noisy .......................................................................................................................................... 26
7 Care and Maintenance ....................................................................................................................................28
7.1 Lubrication...............................................................................................................................................28
7.2 Repack stuffing box ................................................................................................................................28
7.3 Adjust impeller clearance ........................................................................................................................ 28
7.4 Replace the impeller................................................................................................................................ 29
7.5 Replace shaft or bearings ....................................................................................................................... 30
7.6 Replace casing........................................................................................................................................31
7.7 Spare parts..............................................................................................................................................32
7.8 Sectional assembly ................................................................................................................................. 33
8 Local ITT Contacts ..........................................................................................................................................37
8.1 Regional offices.......................................................................................................................................37
Table of Contents
2 3199 Installation, Operation, and Maintenance Manual

1 Introduction and Safety
1.1 Important Safety Notice
To: Our Valued Customers:
User safety is a major focus in the design of our products. Following the precautions outlined in this man-
ual will minimize your risk of injury.
ITT Goulds pumps will provide safe, trouble-free service when properly installed, maintained, and operat-
ed.
Safe installation, operation, and maintenance of ITT Goulds Pumps equipment are an essential end user
responsibility. This Pump Safety Manual identifies specific safety risks that must be considered at all
times during product life. Understanding and adhering to these safety warnings is mandatory to ensure
personnel, property, and/or the environment will not be harmed. Adherence to these warnings alone,
however, is not sufficient — it is anticipated that the end user will also comply with industry and corporate
safety standards. Identifying and eliminating unsafe installation, operating and maintenance practices is
the responsibility of all individuals involved in the installation, operation, and maintenance of industrial
equipment.
Please take the time to review and understand the safe installation, operation, and maintenance guide-
lines outlined in this Pump Safety Manual and the Instruction, Operation, and Maintenance (IOM) man-
ual. Current manuals are available at https://www.gouldspumps.com/en-US/Tools-and-Resources/Litera-
ture/ or by contacting your nearest Goulds Pumps sales representative.
These manuals must be read and understood before installation and start-up.
For additional information, contact your nearest Goulds Pumps sales representative or visit our Web site
at https://www.gouldspumps.com
1.2 Safety Warnings
Specific to pumping equipment, significant risks bear reinforcement above and beyond normal safety
precautions.
WARNING:
A pump is a pressure vessel with rotating parts that can be hazardous. Any pressure vessel
can explode, rupture, or discharge its contents if sufficiently over pressurized causing death,
personal injury, property damage, and/or damage to the environment. All necessary measures
must be taken to ensure over pressurization does not occur.
WARNING:
Operation of any pumping system with a blocked suction and discharge must be avoided in all
cases. Operation, even for a brief period under these conditions, can cause superheating of
enclosed pumpage and result in a violent explosion. All necessary measures must be taken by
the end user to ensure this condition is avoided.
WARNING:
The pump may handle hazardous and/or toxic fluids. Care must be taken to identify the con-
tents of the pump and eliminate the possibility of exposure, particularly if hazardous and/or tox-
ic. Potential hazards include, but are not limited to, high temperature, flammable, acidic, caus-
tic, explosive, and other risks.
1 Introduction and Safety
3199 Installation, Operation, and Maintenance Manual 3

WARNING:
Pumping equipment Instruction, Operation, and Maintenance manuals clearly identify accepted
methods for disassembling pumping units. These methods must be adhered to. Specifically,
applying heat to impellers and/or impeller retaining devices to aid in their removal is strictly for-
bidden. Trapped liquid can rapidly expand and result in a violent explosion and injury.
ITT Goulds Pumps will not accept responsibility for physical injury, damage, or delays caused by a failure
to observe the instructions for installation, operation, and maintenance contained in this Pump Safety
Manual or the current IOM available at http://www.gouldspumps.com/literature.
1.3 Safety
Definitions
Throughout this manual the words Warning, Caution, Electrical are used to indicate where special opera-
tor attention is required.
Observe all Cautions and Warnings highlighted in the Pump Safety Manual and the IOM provided with
your equipment.
WARNING:
Indicates a hazardous situation which, if not avoided, could result in death or serious injury.
Example: Pump shall never be operated without coupling guard installed correctly.
CAUTION:
Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
Example: Throttling flow from the suction side may cause cavitation and pump damage.
Electrical Hazard:
WARNING:
Indicates the possibility of electrical risks if directions are not followed.
Example: Lock out driver power to prevent electric shock, accidental start-up, and physical in-
jury.
Install the shaft guard - if provided
WARNING:
•Running a pump without safety devices exposes operators to risk of serious personal in-
jury or death. Never operate a unit unless appropriate safety devices (guards, etc.) are
properly installed.
• Failure to disconnect and lock out driver power may result in serious physical injury or
death. Always disconnect and lock out power to the driver before performing any installa-
tion or maintenance tasks.
• Electrical connections must be made by certified electricians in compliance with all
international, national, state, and local rules.
• Refer to driver/coupling/gear manufacturer's installation and operation manuals
(IOM) for specific instructions and recommendations.
1.3 Safety
4 3199 Installation, Operation, and Maintenance Manual

Exposed rotating shaft between pump seal and bearing frame. Avoid contact and/or install proper guard-
ing. If guarding is not provided with the pump, contact Goulds for price and availability of proper guard-
ing.
1.4 General precautions
WARNING:
A pump is a pressure vessel with rotating parts that can be hazardous. Hazardous fluids may
be contained by the pump including high temperature, flammable, acidic, caustic, explosive,
and other risks. Operators and maintenance personnel must realize this and follow safety
measures. Personal injuries will result if procedures outlined in this manual are not followed.
ITT Goulds Pumps will not accept responsibility for physical injury, damage or delays caused
by a failure to observe the instructions in this manual and the IOM provided with your equip-
ment.
Table 1: General Precautions
WARNING NEVER APPLY HEAT TO REMOVE IMPELLER. It may explode due to trap-
ped liquid.
WARNING NEVER use heat to disassemble pump due to risk of explosion from tapped
liquid.
WARNING NEVER operate pump without coupling guard correctly installed.
WARNING NEVER run pump below recommended minimum flow when dry, or without
prime.
WARNING ALWAYS lock out power to the driver before performing pump maintenance.
WARNING NEVER operate pump without safety devices installed.
WARNING NEVER operate pump with discharge valve closed.
WARNING NEVER operate pump with suction valve closed.
WARNING DO NOT change service application without approval of an authorized ITT
Goulds Pumps representative.
WARNING Safety Apparel:
•Insulated work gloves when handling hot bearings or using bearing
heater
• Heavy work gloves when handling parts with sharp edges, especially
impellers
• Safety glasses (with side shields) for eye protection
• Steel-toed shoes for foot protection when handling parts, heavy tools,
etc.
• Other personal protective equipment to protect against hazardous/toxic
fluids
WARNING Receiving:
Assembled pumping units and their components are heavy. Failure to properly
lift and support equipment can result in serious physical injury and/or equip-
ment damage. Lift equipment only at specifically identified lifting points or as
instructed in the current IOM. Current manuals are available at www.gould-
spumps.com/literature_ioms.html or from your local ITT Goulds Pumps sales
representative. Note: Lifting devices (eyebolts, slings, spreaders, etc.) must
be rated, selected, and used for the entire load being lifted.
WARNING Alignment:
1.4 General precautions
3199 Installation, Operation, and Maintenance Manual 5

Shaft alignment procedures must be followed to prevent catastrophic failure of
drive components or unintended contact of rotating parts. Follow coupling
manufacturer's coupling installation and operation procedures.
WARNING Before beginning any alignment procedure, make sure driver power is locked
out. Failure to lock out driver power will result in serious physical injury.
CAUTION Piping:
Never draw piping into place by forcing at the flanged connections of the
pump. This may impose dangerous strains on the unit and cause misalign-
ment between pump and driver. Pipe strain will adversely effect the operation
of the pump resulting in physical injury and damage to the equipment.
WARNING Flanged Connections:
Use only fasteners of the proper size and material.
WARNING Replace all corroded fasteners.
WARNING Ensure all fasteners are properly tightened and there are no missing fasten-
ers.
WARNING Startup and Operation:
When installing in a potentially explosive environment, please ensure that the
motor is properly certified.
WARNING Operating pump in reverse rotation may result in contact of metal parts, heat
generation, and breach of containment.
WARNING Lock out driver power to prevent accidental start-up and physical injury.
WARNING The impeller clearance setting procedure must be followed. Improperly setting
the clearance or not following any of the proper procedures can result in
sparks, unexpected heat generation and equipment damage.
WARNING If using a cartridge mechanical seal, the centering clips must be installed and
set screws loosened prior to setting impeller clearance. Failure to do so could
result in sparks, heat generation, and mechanical seal damage.
WARNING Never operate a pump without coupling guard properly installed. Personal in-
jury will occur if pump is run without coupling guard.
WARNING Make sure to properly lubricate the bearings. Failure to do so may result in ex-
cess heat generation, sparks, and / or premature failure.
CAUTION Never operate the pump without liquid supplied to mechanical seal. Running a
mechanical seal dry, even for a few seconds, can cause seal damage and
must be avoided. Physical injury can occur if mechanical seal fails.
WARNING Never attempt to replace packing until the driver is properly locked out and the
coupling spacer is removed.
WARNING DO NOT operate pump below minimum rated flows or with suction and/or dis-
charge valve closed. These conditions may create an explosive hazard due to
vaporization of pumpage and can quickly lead to pump failure and physical in-
jury.
WARNING Ensure pump is isolated from system and pressure is relieved before disas-
sembling pump, removing plugs, opening vent or drain valves, or disconnect-
ing piping.
WARNING Shutdown, Disassembly, and Reassembly:
Pump components can be heavy. Proper methods of lifting must be employed
to avoid physical injury and/or equipment damage. Steel toed shoes must be
worn at all times.
1.4 General precautions
6 3199 Installation, Operation, and Maintenance Manual

WARNING The pump may handle hazardous and/or toxic fluids. Observe proper decon-
tamination procedures. Proper personal protective equipment should be worn.
Precautions must be taken to prevent physical injury. Pumpage must be han-
dled and disposed of in conformance with applicable environmental regula-
tions.
WARNING Operator must be aware of pumpage and safety precautions to prevent physi-
cal injury.
WARNING Lock out driver power to prevent accidental startup and physical injury.
CAUTION Allow all system and pump components to cool before handling them to pre-
vent physical injury.
CAUTION If pump is a Model NM3171, NM3196, 3198, 3298, V3298, SP3298, 4150,
4550, or 3107, there may be a risk of static electric discharge from plastic
parts that are not properly grounded. If pumped fluid is non-conductive, pump
should be drained and flushed with a conductive fluid under conditions that
will not allow for a spark to be released to the atmosphere.
WARNING Never apply heat to remove an impeller. The use of heat may cause an explo-
sion due to trapped fluid, resulting in severe physical injury and property dam-
age.
CAUTION Wear heavy work gloves when handling impellers as sharp edges may cause
physical injury.
CAUTION Wear insulated gloves when using a bearing heater. Bearings will get hot and
can cause physical injury.
WARNING Noise:
Sound pressure levels may exceed 80 dbA in operating process plants. Clear
visual warnings or other indicators should be available to those entering an
area with unsafe noise levels. Personnel should wear appropriate hearing pro-
tection when working on or around any equipment, including pumps. Consider
limiting personnel’s exposure time to noise or, where possible, enclosing
equipment to reduce noise. Local law may provide specific guidance regard-
ing exposure of personnel to noise and when noise exposure reduction is re-
quired.
WARNING Temperature:
Equipment and piping surfaces may exceed 130ºF (54ºC) in operating proc-
ess plants. Clear visual warnings or other indicators should alert personnel to
surfaces that may reach a potentially unsafe temperature. Do not touch hot
surfaces. Allow pumps operating at a high temperature to cool sufficiently be-
fore performing maintenance. If touching a hot surface cannot be avoided,
personnel should wear appropriate gloves, clothing, and other protective gear
as necessary. Local law may provide specific guidance regarding exposure of
personnel to unsafe temperatures.
WARNING This product contains Carbon Black a chemical known to the State of Califor-
nia to cause cancer. For more information go to www.P65Warnings.ca.gov
1.5 Ex Considerations and Intended Use
Special care must be taken in potentially explosive environments to ensure that the equipment is proper-
ly operated and maintained. Compliance with the essential safety and health requirements has been as-
sured by compliance with the following standards, method of protection Constructional Safety (C): ISO
80079-36 ISO 80079-37
1.5 Ex Considerations and Intended Use
3199 Installation, Operation, and Maintenance Manual 7

Description of Ex-Directives
The Ex-directives are a specification enforced in Europe and the United Kingdom for electrical and non-
electrical equipment installed in those locations. Ex-directives deal with the control of potentially explo-
sive atmospheres and the standards of equipment and protective systems used within these atmos-
pheres. The relevance of the Ex-requirements is not limited to Europe or the UK. You can apply these
guidelines to equipment installed in any potentially explosive atmosphere.
Guidelines for compliance
Compliance is fulfilled only when you operate the unit within its intended use. Do not change the condi-
tions of the service without the approval of an ITT representative. When you install or maintain explosion
proof products, always comply with the directive and applicable standards (for example, IEC/EN
60079-14).
1. Monitoring the liquid end temperature.
2. Maintaining proper bearing lubrication.
3. Ensuring that the pump is operated in the intended hydraulic range.
The Ex conformance is only applicable when the pump unit is operated within its intended use. Operat-
ing, installing or maintaining the pump unit in any way that is not covered in the Instruction, Operation,
and Maintenance manual (IOM) can cause serious personal injury or damage to the equipment. This in-
cludes any modification to the equipment or use of parts not provided by ITT Goulds Pumps. If there is
any question regarding the intended use of the equipment, please contact an ITT Goulds representative
before proceeding.
Current IOMs are available at https://www.gouldspumps.com/en-US/Tools-and-Resources/Literature/
IOMs/ or from your local ITT Goulds Pumps Sales representative.
All pumping unit (pump, seal, coupling, motor and pump accessories) certified for use in an Ex classified
environment, are identified by an Ex tag secured to the pump or the on which it is mounted. A typical tag
would look like this:
If applicable, your pump may have either a CE Ex (ATEX) tag or UKCA Ex tag affixed to the pump. See
the Safety section for a description of the symbols and codes. Typical nameplate only shown below, the
actual area classification may be different.
Figure 1: Typical Ex pump nameplate
Table 2: Temperature class definitions
Code Maximum permissible
pumpage temperature in °C | °F
Minimum permissible pumpage temperature in °C | °F
T1 450 | 842 372 | 700
T2 300 | 572 277 | 530
T3 200 | 392 177 | 350
T4 135 | 275 113 | 235
T5 100 | 212 Option not available
1.5 Ex Considerations and Intended Use
8 3199 Installation, Operation, and Maintenance Manual

Code Maximum permissible
pumpage temperature in °C | °F
Minimum permissible pumpage temperature in °C | °F
T6 85 | 185 Option not available
The code classification marked on the equipment must be in accordance with the specified area where
the equipment will be installed. If it is not, do not operate the equipment and contact your ITT Goulds
Pumps sales representative before proceeding.
1.6 Parts
The use of genuine Goulds parts will provide the safest and most
reliable operation of your pump. ITT Goulds Pumps ISO certifica-
tion and quality control procedures ensure the parts are manufac-
tured to the highest quality and safety levels.
Please contact your local Goulds representative for details on
genuine Goulds parts.
1.6 Parts
3199 Installation, Operation, and Maintenance Manual 9

2 Installation
2.1 Location
Pumping unit should be placed as close as practical to the source of supply. Head room and floor space
allotted to the pumping unit should be sufficient for inspection and maintenance.
2.2 Foundation
The foundation should be substantial in order to absorb any vibration and to form a permanent rigid sup-
port for the bedplate. A concrete foundation poured on a solid footing, using a one-three-five mix of liber-
al thickness to support the pumping unit, is satisfactory.
Foundation bolts
1. The location and size of the foundation bolts is shown on the outline assembly drawing supplied
for the pumping unit.
2. Each bolt should be installed with a pipe sleeve around it to allow for adjustment. The inside
sleeve diameter should be 2½ to 3 times the diameter of the bolt. Place a washer between head
bolt and sleeve bolt in position. Stuff waste around foundation bolts toprevent concrete from en-
tering between the bolt and pipe sleeve.
Figure 2: Foundation bolts
3. The foundation bolts should be of sufficient length so that they project through the nuts approxi-
mately ¼" after allowance has been made for grouting ( ¾" to 1½"), the thickness of the bedplate,
and the thickness of the foundation bolt nut. See Figure 2: Foundation bolts on page 10.
Preparing foundation for mounting
Prior to setting unit upon the foundation, clean the top surface of concrete.
Mounting unit on foundation
1. Put the pumping unit in place on the wedges furnished. The wedges should be placed at four
points, two below the approximate center of the pump and two below the approximate center of
the driver.
2 Installation
10 3199 Installation, Operation, and Maintenance Manual

Figure 3: Unit mounting
2. Disconnect coupling between pump and driver if other than spider-insert type.
3. By adjustment of the wedges, bring the unit to an approximate level and provide for the proper
distance above the foundation for grouting (¾" to 1½"). Level or plumb the suction and discharge
flanges. By further adjustment of the wedges, bring the coupling halves in reasonable alignment.
Check alignment as directed in 2.3 Alignment-initial on page 11.
4. After the wedges have been adjusted, tighten foundation bolts evenly but only finger tight, main-
taining the level of the bedplate.
NOTICE:
Final tightening of foundation bolts is done after grout has set 48 hours. Refer to 2.3 Alignment-
initial on page 11.
Grouting unit on foundation
1. Build wood dam around foundation as shown in Figure 2: Foundation bolts on page 10 and wet
top surface of concrete foundation thoroughly.
2. Pour grout in hole provided in the top of the bedplate. The grout should be thin enough to flow
out under the bedplate but not so wet that the cement will separate from the sand and float to the
surface. A mixture of one part Portland cement to three parts of sharp sand is suggested.
3. The grout should be puddled continuously as it is poured to expel the air and completely fill the
space under the bedplate to the level of the grout hole in the top of the bedplate.
4. With a trowel, strike along the top of the wood dam to give a neat finished appearance at this
point.
5. Allow grout to harden at least 48 hours.
2.3 Alignment-initial
Alignment of the pump and driver through the flexible coupling is of extreme importance for trouble-free
mechanical operation.
If the driver was mounted at the factory, the unit was in alignment before it left our assembly department.
However, in transit and subsequent handling, this factory alignment was probably destroyed and it is now
necessary to re-establish the alignment. As directed in 2.2 Foundation on page 10, only approximate
alignment was obtained by wedging under bedplate before grouting.
The following are suggested steps to establish the initial alignment of the pumping unit.
2.3 Alignment-initial
3199 Installation, Operation, and Maintenance Manual 11

NOTICE:
This is an initial alignment. The final alignment is done after the unit has been run under actual
operating conditions. The final alignment procedure is outlined in 4.5 Alignment - final on page
21.
1. Be sure coupling halves are disconnected as previously instructed, except Spider-Insert type.
2. Tighten foundation bolts.
3. Tighten pump and driver hold-down bolts.
4. Check gap and angular misalignment - shaft axes concentric but not parallel.
1. Couplings other than Spider-Insert type. The normal gap (distance between coupling
halves) is 1/8". Check angular misalignment by inserting a feeler or taper gauge at four
points on the circumference of the coupling halves at 90° intervals. The unit will be in an-
gular alignment when the measurements show the coupling faces are the same distance
apart at all points. Adjustment for gap and for obtaining angular alignment is obtained by
loosening the driver hold down bolts and shifting or shimming driver as required. Tighten
driver hold down bolts after adjustments are made.
Figure 4: Checking gap alignment
2. Spider-Insert type coupling: The normal gap (difference of the space between the cou-
pling halves and the thickness of the spider insert) is 1/16". Check angular misalignment
by using calipers at four points on the circumference of the outer ends of the coupling
hubs at 90° intervals. The unit will be in angular alignment when the measurements show
the ends of the coupling hubs to be the same distance apart at all points. Adjustments for
obtaining the gap and angular alignment is obtained by loosening the driver hold down
bolts and shifting or shimming driver as required. Tighten driver hold down bolts after ad-
justments are made.
2.3 Alignment-initial
12 3199 Installation, Operation, and Maintenance Manual

Figure 5: Checking angular misalignment
5. Check parallel misalignment - shaft axes parallel but not concentric by laying a straight edge
across both coupling rims at top, bottom and both sides. This applies to both types of couplings.
Figure 6: Checking parallel misalignment
The unit will be in horizontal parallel alignment when the straight edge rests evenly on both
halves of the coupling at each side.
In order to secure vertical parallel alignment under actual operating conditions, the driver shaft
must be set higher or lower than the pump shaft to compensate for vertical expansion. (When
making final alignment while units are at operating temperatures, shafts must be at same height.)
A suggested approximate cold setting for motor driven pumps is given below:
1. When pumping cold liquids, or when pump bearings are being cooled, set the motor shaft
0.006" below the pump shaft.
2. When pumping hot liquids (200 - 250°F), and cooling is not used, set the motor and pump
shafts at the same height.
Measure the vertical difference of the shafts with straight edge and feelers.
Thin shim stock should be used under the driver feet to establish parallel alignment. (In
some instances, shims may be required under the pump feet.)
6. Bear in mind always that alignment in one direction may alter the alignment in another. Check
through each alignment procedure after making any alignment alteration.
2.3 Alignment-initial
3199 Installation, Operation, and Maintenance Manual 13

2.4 Piping - general
1. All piping must be supported independently of the pump. The piping should always line-up natu-
rally with the pump flanges. Never draw the piping into place by use of force at the flanged suc-
tion and discharge connections of the pump.
2. The piping, both suction and discharge, should be as short and direct as possible. Avoid all un-
necessary elbows, bends and fittings, as they increase the friction losses in the piping. The size
of pipe and fittings should carefully selected and of sufficient size to keep the friction losses as
low as practical.
3. Piping must not be connected to the pump until the grout has thoroughly hardened and the foun-
dation bolts as well as driver and pump hold down bolts have been tightened.
4. When handling liquids at elevated temperatures, arrangements must be made for expansion
loops or expansion joints so that the linear expansion of the pipe will not cause the pumping unit
to be drawn out of alignment.
2.5 Piping - suction
1. General
Properly installed suction piping is of extreme importance for trouble-free centrifugal pump opera-
tion.
1. The suction pipe should be as large or larger than the pump suction.
2. Increasers, if used, should be eccentric and preferably at or near the pump suction
flange, sloping side down.
3. A centrifugal pump should never be throttled for capacity adjustment on the suction side.
2. Installation with pump above source of supply-suction lift:
1. Keep suction pipe free from air pockets.
• Piping should slope upwards from source of supply.
• No portion of piping should extend above the pump suction nozzle.
2. All joints must be air tight.
3. The suction pipe should always be submerged into the source of supply.
2.4 Piping - general
14 3199 Installation, Operation, and Maintenance Manual

Figure 7: Suction pipe submerged into source of supply
2.5 Piping - suction
3199 Installation, Operation, and Maintenance Manual 15

4. A foot valve should only be used if necessary for priming, or, if the pump is to be used on
intermittent service and is required to hold its prime.
5. Suction strainers when used should have a net free area of at least three times the suc-
tion pipe area.
3. Installations with pump below source of supply-suction head or flooded suction:
1. A gate valve should be installed in the suction line to permit closing the line for pump in-
spection and maintenance.
2. The size of the entrance from the source of supply or minimum submergence over the
entrance should be calculated from the data as shown in Figure 7: Suction pipe sub-
merged into source of supply on page 15 for applicable condition to prevent air from be-
ing drawn into the pump.
2.6 Piping - discharge
1. A gate valve and a check valve should be installed in the discharge line. The check valve should
be located between the gate valve and pump to permit inspection of the check valve. The gate
valve is required for priming, regulation of flow capacity and for inspection and maintenance of
the pump.
2. Increasers, if used in discharge line, should be placed between the check valve and the pump.
2.7 Connection of piping
Connect suction and discharge piping. Rotate the pump shaft by hand several complete revolutions to be
sure that there is no binding and that all parts are free. Recheck alignment as described in 2.3 Align-
ment-initial on page 11. If the connection of the piping causes unit to be out of alignment, correct piping
to relieve strain on the pump.
2.8 Check rotation
These pumps are built in right hand construction, i.e., clockwise rotation when viewed from driver end.
The direction of rotation is marked on the pump casing. Make sure that driver rotates in the same direc-
tion. On electric motors, jog starting switch to be sure wiring is connected for correct rotation.
2.9 Connection of coupling
Connect coupling, following instructions for the particular make of coupling furnished. This data is sup-
plied separately, giving complete instructions for connection, lubrication, alignment and maintenance.
Spider-Insert type couplings are pre-assembled.
2.6 Piping - discharge
16 3199 Installation, Operation, and Maintenance Manual

3 Preparation for Operation
3.1 Pump bearings
1. Grease Lubricated Bearings
Sufficient lubricant is inserted at the factory for 2000 hours operation.
2. Oil Lubricated Bearings
The pump bearings are flood oil lubricated, and are not lubricated at the factory.
A high quality turbine type oil, with rust and oxidation inhibitors, should be used. For the great
majority of operating conditions, oil temperature will run between 50 and 180°F. In this range an
oil of 300 SSU viscosity at 100°F. (approximately SAE 20) should be used. If oil temperature ex-
ceeds 180°F for extended periods, use of cooling water in the bearing frame cooling jacket is rec-
ommended. For extreme conditions, refer to factory or a lubrication expert for a recommendation.
The constant level oiler (251) is in the box of fittings shipped with the pump. Oiler was adjusted to
maintain proper oil level before leaving factory. If adjustment is lost, reset according to following
figure.
Figure 8: Oiler
Install the constant level oiler (251) in the bearing frame.
Fill the oiler bottle with the proper grade of oil, and replace in the oiler. The frame is filled when
an oil level remains in the bottle. Several fillings of the bottle may be required. Never fill the frame
through the frame breather (113-A) or through the oiler without use of the bottle.
3.2 Driver bearings
Check to be sure the driver bearings are properly lubricated.
3.3 Stuffing box
These pumps are furnished with packing rings as standard. However, mechanical seals, either single or
double, can be furnished on order.
1. Stuffing box with packing rings
3 Preparation for Operation
3199 Installation, Operation, and Maintenance Manual 17

The stuffing box packing is in the box of fittings accompanying the pump. The standard packing
is die-formed to facilitate installation. The lantern ring may be one piece metal or split PTFE,
depending upon pump construction
When installing the packing and the PTFE lantern ring (105), twist the rings sideways just enough
to get them around the shaft. Do not attempt to pull rings straight out to get them over shaft.
Figure 9: Lantern ring and stuffing box packing
If the lantern ring is metal, slide it (105) out and away from the stuffing box. (Refer to Interchan-
geability chart). Insert three rings of packing staggering the joints. The lantern ring (either metal
or PTFE) should then be inserted in the stuffing box. When it is in its proper position, it will be
directly opposite the sealing inlet connection.
After the lantern ring is in place, insert two more rings of packing, staggering the joints. One extra
ring is furnished in each set of packing. The extra ring may be added as required.
Stainless steel and GA-20 pumps are supplied with quench style glands as standard. Insert
length of 1/8" square· packing into recess in each gland half, and trim off excess flush with face.
In all iron, all bronze, and bronze fitted constructions, the gland halves are held together by cup-
ped washers which slide over the gland studs onto bosses on the gland halves. In stainless steel
and GA-20 constructions, the gland halves are bolted together with the bolts and nuts supplied.
Install the gland halves on the shaft as described above. Place the two gland nuts on the gland
studs and draw up evenly but not tightly.
2. Stuffing box with mechanical seal
When mechanical seals are furnished, they are installed and adjusted at the factory. The seal
manufacturer's instructions and seal drawing are shipped with the pump. These should be read
for any special instructions and filed for use in maintaining the pump.
If the pump has a single mechanical seal and is handling clear liquid, be sure circulating line from
casing to stuffing box is connected. It is sometimes removed to prevent damage during shipment.
This line ensures circulation of liquid around seal. If pump is handling abrasive solids which might
score the seal faces, the seal is usually flushed with clear compatible liquid from an outside
source. The flush liquid keeps the solids in the pumpage away from the seal faces. A restricting
bushing in the bottom of the stuffing box is used to control dilution of the pumpage. Flush liquid
pressure should be great enough to ensure steady flow into the stuffing box.
On double seal installations a clear compatible liquid from an outside source should be circulated
through the stuffing box. Two ¼" pipe tap openings provide entrance and exit of lubricating liquid
to the seal chamber. The lubricating liquid pressure should be approximately 20 pounds greater
than the suction pressure. Valves in the lines can be used to control flow and pressure. Sufficient
flow should be allowed to prevent excessive heat generation in the stuffing box. If pumpage tem-
perature is above 250°F, then this lubricating liquid should be cooled to prevent heat transfer
along the shaft to the bearings. The circulating liquid provides lubrication to the seal faces and
3.3 Stuffing box
18 3199 Installation, Operation, and Maintenance Manual