ANSIMAG K+1516 Instruction Manual

Sundyne Corporation is ISO 9001-2000 compliant is certified by Lloyd’s Register Quality Assurance Limited.
INSTALLATION &
MAINTENANCE MANUAL
K+
ANSI
ISO
HORIZONTAL END-SUCTION PUMPS
ANSI MODELS: K+1516, K+326, K+326s, K+3156, K+436, K+1518 and
K+3158
ISO MODELS: K+i32160, K+i50160, K+i65160, K+i32200 and
K+i40200
JIS MODELS: K+j40160, K+j40200, K+j50200, K+j50160, and
K+j65160
Issued January, 2007
T.S.U.
♦♦♦♦Do not run dry ♦♦♦♦
This pump is NOT self-priming. The pump
must be filled with liquid before starting
otherwise severe damage may occur.
“Simple by Design”

2
TABLE OF CONTENTS
1- LIMITED WARRANTY 4
2- PUMP IDENTIFICATION CODES 7
3- SAFETY CHECK LIST 9
4- PRINCIPLES OF MAGNETIC DRIVE PUMPS 10
5- PUMP INSTALLATION 11
5-a Piping
5-b Foundation
5-c Installation and Electrical Connections
5-d Earthing Arrangement
6- PUMP START UP AND SHUTDOWN 14
6-a Pre-Start Check List
6-b Start Up and Operation
6-c Shutdown Procedure
7- DISASSEMBLY AND MAINTENANCE 17
7-a Basic Disassembly for Inspection
7-b Inspection Checklist
7-c Detailed Wear Parts Tolerances
7-d Parts Replacement Procedures
8- WET END ASSEMBLY (ANSI and ISO Pumps) 24
8-a Shaft/Containment Shell assembly
8-b Impeller Assembly
8-c Wet End Assembly
9- DRIVE END ASSEMBLY 27
ANSI Pumps with NEMA Motors:
9-a Mounting Outer Drive
9-b Mounting Bracket to Motor
9-c Mounting Motor Risers / Foot
9-d Mounting Drive End to Wet End
10-DRIVE END ASSEMBLY 30
ANSI or ISO Pumps with IEC Motors:
10-a Mounting Adapter, Outer Drive and Foot
10-b Mounting Drive End to Wet End

3
TABLE OF CONTENTS (Con’t)
11- TRIMMING THE IMPELLER 33
12- BEARING FRAME 36
12-a Disassembly
12-b Inspection & Maintenance
12-c Assembly
13- PARTS LISTS 42
14- SHIPPING WEIGHTS 56
15- PUMP SPECIFICATIONS 57
16- COMMON CONVERSIONS 60
Addendum 1 - VERSA-TOOL FOR SHAFT
SUPPORT 61
Addendum 2 – Inactive Parts 62

4
Two year limited warranty
Ansimag pumps and parts are warranted by Ansimag to the original user against defects in workmanship
and materials under normal use for two years after the date of purchase. Any part returned to an
Ansimag- designated, authorized service location, shipping cost prepaid, will be evaluated for defects.
Parts determined by Ansimag to be defective in material or workmanship will be repaired or replaced at
Ansimag's option as the exclusive remedy.
Limitation of liability
To the extent allowable under applicable law, Ansimag's liability for consequential damages is expressly
disclaimed. Ansimag's liability in all events is limited to and shall not exceed the purchase price paid.
Warranty disclaimer
Ansimag has made a diligent effort to illustrate and describe the products in this literature accurately;
however, such illustrations and descriptions are for the sole purpose of identification and do not express
or imply a warranty that the products are merchantable, or fit for a particular purpose, or that the
products will necessarily conform to the illustration or descriptions.
Except as provided below, no warranty or affirmation of fact, expressed or implied, other than as stated
in "LIMITED WARRANTY" is made or authorized by Ansimag.
Product suitability
Many states and localities have codes and regulations governing the sale, construction, installation
and/or use of products for certain purposes, which may vary from those in neighboring areas. While
Ansimag attempts to assure that its products comply with such codes, it cannot guarantee compliance,
and cannot be responsible for how the product is installed or used. Before purchasing and using a
product, please review the product application as well as the national and local codes and regulations,
and be sure that product, installation, and use complies with them.
Warranty exclusions
Wear items that must be replaced on a regular basis are not covered under this warranty. Such items
include, but are not limited to mouth rings, thrust rings, O-rings, bushings and shafts.
Items that have been subject to extreme heat or have been used with abrasive or incompatible chemicals
are not covered under this warranty.
1. Limited Warranty

5
EC Declaration of Conformity
Manufacturer: Sundyne Corporation
Details of Equipment:
Model
Prefix Alternative Model Description Description Harmonized Standards applied in order to verify compliance to the Directive
KF
KF
K
K
KM
KM
KV
KV
KP
KP
ALA (PR, PS, QS, QT Couplings)
ALI (PR, PS, QS, QT Couplings)
ALA (A, B,C Couplings)
ALI (A, B, C Couplings)
ALA (AA, AB Couplings)
ALI (AA, AB Couplings)
VALA
VALI
SPALA
SPALI
Magnetic Drive
Sealless
Centrifugal Pumps
MACHINERY DIRECTIVE 98/37/EEC:
EN 292-1 Safety of Machinery - Basic Concepts,
general principles of design.
EN 292-2/A1 Technical principles and
specifications (and amendment 1).
EN 809 Pumps and pump units for liquids –
Common Safety Requirements.
ATEX DIRECTIVE 94/9/EC:
EN 13463-1 Non-Electrical equipment for
potentially explosive atmospheres.
Part 1: Basic method and requirements.
EN 13463-5 Non-electrical equipment
Part 5: Protection by constructional safety ‘c’.
Directives to which the above equipment
complies to: Machinery Directive
Directive relating to Machinery (98/37/EC)
ATEX Directive
Directive on equipment and protective systems
intended for use in potentially explosive
atmospheres (94/9/EC)
Group II Categories 2 and 3 (gas)
Notified body: Intertek Testing and Certification Ltd
Intertek House
Cleeve Road, Leatherhead,
Surrey, KT22 7SB
UK
Certification Numbers: ITS03ATEX11180
ATEX Technical Construction File
Number: ATEX-ANSIMAG-001
Year in Which CE Mark was affixed: 1996
We certify that Plastic Lined magnetically driven bareshaft, close-coupled, and separately mounted
pumps manufactured by the Sundyne Corporation meet the requirements of the above Directives,
when installed, operated and maintained in accordance with our published Installation and Operating
Manual. Plastic Lined magnetic drive pumps must not be put into service until all the conditions
relating to safety noted in these documents have been met.
Authorised Signatories on behalf of Sundyne Corporation:
Name: Jeff Wiemelt Position: Vice President and General
Manager of Sundyne
Corporation, The Americas
Name: Kerry Kramlich Position: Pump Engineering Manager
Date of issue: 16th June 2003 Place of Issue: United Kingdom

6
SAFETY WARNING
Genuine parts and accessories have been specifically designed and tested for use with these products to ensure
continued product quality and performance. Testing cannot be performed on all parts nor on accessories
sourced from other vendors, incorrect design and/or fabrication of such parts and accessories may adversely
affect the performance and safety features of these products. Failure to properly select, install or use authorised
Sundyne parts and accessories is considered misuse, and damage or failure caused by misuse is not covered by
Sundyne’s warranty. Additionally, modification of Sundyne products or removal of original components may
impair the safety of these products and their effective operation.
EUROPEAN UNION MACHINERY DIRECTIVE
(CE mark system)
This document incorporates information relevant to the Machinery Directive 98/37/EC. It should be read prior
to the use of any of our equipment. Individual maintenance manuals which also conform to the EU Directive
should be read when dealing with specific models.
EUROPEAN UNION ATEX DIRECTIVE
This document incorporates information relevant to the ATEX Directive 94/9/EC (Directive on equipment and
protective systems intended for use in potentially explosive atmospheres). It should be read prior to the use
of any of our equipment.
Compliance to the Directive is based on Atmospheres having pressures up to but not exceeding 350psi and
temperatures ranging from –120 °F to + 250 °F depending on the model.
As indicated in the ATEX Directive 94/9/EC, it is the responsibility of the user of the pump to indicate to
Sundyne Corporation the Zone and Corresponding group (Dust or Gas) that the pump is to be installed
within. Should the pump be put into service in a potentially explosive atmosphere, the user of the pump
must put the grounding connector into use.

7
CAUTION
Read all instructions before removing pump from shipping container or preparing it for operation. It is
important to install and operate the pump correctly to eliminate any possible mishap that may be
detrimental to property or personnel. Keep this manual for future reference.
2. PUMP IDENTIFICATION
Every pump and wet end only unit shipped has a serial number, model number, and code number
stamped on a stainless steel identification tag. This plate is riveted on a bracket or casing. Please
confirm all information stamped on the plate as soon as pump is received. Any discrepancy between the
order and the information stamped on plate must be reported to your local dealer. If pump is purchased
with a factory supplied motor, the motor nameplate must also be checked to verify motor's compatibility
with pump and with order. Pay special attention
to voltage, HP, RPM, and frequency information.
Maintenance instructions in this manual are based
on K Series ANSI and ISO models equipped with
NEMA or IEC motors. Because Ansimag keeps
permanent records for all pumps by serial number,
this number should be included with all
correspondence. The model number, including
impeller diameter (in inches), together with the
code number and the mounting code number
define the type of pump in detail.
Fig. 2-1 Name Plate

8
PUMP CODE K+ 1516 C 02 AK 1 1 1 1 1 A
SERIES
K+ Series K+
HYDRAULICS
NEMA ISO JIS
1516 i32160 j40160
1518 i32200 j40200
3156 -- --
3158 i40200 j50200
326 i50160 j50160
326S -- --
436 i65160 j65160
CONFIGURATION
Close Couple C
Long Couple L
Wet End W
Cartridge NC
MOTOR FRAME
NEMA IEC, JIS
Wet End Only 00 80 IEC & JIS 30
56C 01 90 IEC & JIS 31
143/145TC 02 100/112 IEC & JIS 32
182/184TC 03 132 IEC & JIS 33
213/215 TC 04 160 IEC & JIS 34
254/256 TC 05
284/286 TSC 07
324/326 TSC 09
DRIVE SIZE
AK – 10 hp AK
BK – 15 hp BK
CK – 30hp CK
O-RING
Viton 1
EPDM 2
GORTEX 4
WEAR PARTS
SIC / CFR-PTFE 1
SIC / SIC 2
Carbon / CFR - PTFE 3
Carbon / SIC 4
WETTED MATERIAL
CFR -ETFE 1
GFR – PFA 2
ETFE w/ PFA Impeller 4
PUMP CASE MATERIAL
CI / ETFE 1
CI / GFR-PFA 3
316 SS 4
Hastelloy® B 5
Hastelloy® C 6
PUMP CASE FLANGE
150 1
300 2
ISO PN 16 3
JIS 10 4
THIRD PARTY CERTIFICATION
None 0
ATEX / CE A
Notes: A. Gortex® PTFE encapsulated Viton with a Gortex® wrap.
B. Wear Parts Material is shaft material/bushing material.
C. Pump Case Material is base material/lining. Hastelloy and 316SS is unlined.

9
3. SAFETY CHECK LIST
;Warning! Magnetic Field Hazard. Magnetic drive pumps contain some of the
world's strongest magnets. These magnets are located in the impeller and outer drive
magnet assemblies. The powerful magnetic fields could adversely affect persons who are
assisted by electronic devices that may contain reed switches, and these people should not
handle magnetic pumps or their parts. Pacemakers and defibrillators are examples of these
devices.
Magnetic Field Hazard DO Use jackscrews DON’T use hands!
;Warning! Magnetic Forces Hazard. Use only the recommended disassembly and
assembly procedures when separating the wet end from the drive end. These procedures are
found in Sections 7-a and 8-a. The magnetic forces are strong enough to abruptly pull the
drive end and wet end together. Be very careful to keep fingers away from mating faces of
wet end and drive end to avoid injury.
;Warning! Hot Surfaces Hazard. These pumps are designed to handle liquids at
temperatures up to 250oF and will become hot on the outside. This creates a hazard of
burns to personnel coming in contact with the equipment.
;Warning! Rotating Parts Hazard. The pump contains parts which rotate during
operation. Before operation the pump must have the coupling guard secured in place and be
completely assembled. To prevent injury during maintenance the pump and/or driver must
be disconnected and locked out from the power source. Local safety standards apply.
;Warning! Chemical Hazard. The pumps are designed to handle all types of chemical
solutions. Many are hazardous to personnel. This hazard could take the form of leaks and
spills during maintenance. Plant procedures for decontamination should be followed during
pump disassembly and part inspection. Keep in mind there is always the possibility of
small quantities of liquid being trapped between pump components.
;Caution! Magnetic field sensitive items. Do not put magnetic field sensitive
items such as credit cards, floppy diskettes or magnetic tapes near the impeller or drive
magnet assemblies.
;Caution! Magnetic Tools. Do not use steel or iron tools near magnets. Steel tools
such as wrenches and screwdrivers are easily attracted to magnets and can break them on
contact.

10
4. PRINCIPLES OF MAGNETIC DRIVE PUMPS
INNER YOKE OUTER YOKE OUTER MAGNET ASSEMBLY
INNER MAGNET ASSEMBLY
ATTRACTION REPULSION
Fig. 4-1
A magnetic coupling consists of two magnet assemblies. One is the outer assembly (the driver magnet)
and the other is the inner assembly (the driven magnet). The outer assembly is connected to a motor and
the inner assembly is indirectly or directly attached to a pump impeller. As Figure 4-1 shows, at rest,
magnet components of the outer assembly are aligned with their counterparts in the inner assembly.
When load (torque) is applied, the coupling deflects angularly and the magnets create a force of
simultaneous attraction and repulsion. This force is used to transfer torque from the motor to the
impeller.
This permanent-permanent magnet coupling creates neither slippage nor induction currents during
rotation. If excessive torque is applied, the magnets will de-couple. The magnets will not re-couple
unless the pump is stopped. There is no energy loss in this permanent-permanent coupling unless an
electrically conductive containment is placed between the outer and inner magnets. If an electrically
conductive material is used for the containment, eddy-currents will be generated which will cause some
energy loss. Ansimag's K+ Series pumps use only non-conductive containment shells. Ansimag's
K+ Series pumps have an inner magnet assembly which is indirectly attached to the impeller
(CFR/ETFE) or directly molded into the impeller (GFR/PFA ). The magnets are shown in Figure 4-2
behind the impeller.
Fi
g
. 4-2

11
5. PUMP INSTALLATION
5-a. PIPING
1. Install the pump as close as possible to the suction tank. Pumps are designed to push, not pull,
liquid.
2. Ansimag recommends supporting and restraining both the suction and discharge pipes near the
pump to avoid the application of forces and moments to the pump casing. All piping should line up
with the pump flanges naturally to minimize any bending moments at the pump nozzles.
3. To minimize friction the suction line should have a short straight run to the pump, and be free of
fittings, for a length equivalent to or larger than ten (10) times its diameter.
4. The suction line size should be at least as large as the pump's suction port or one size larger if the
suction line is so long that it significantly affects NPSH available. Never reduce the suction
piping size.
5. The suction line should have no high points since these can create air pockets.
6. The NPSH available to the pump must be greater than the NPSH required. Screens and filters in
the suction line will reduce the NPSH available, and must be considered in the calculations.
7. Caution: Do not install a check valve in the suction line even if a check valve is installed in the
discharge line. The suction line check valve could shut off before the discharge line check
valve closes. This would cause water hammer, which may burst the rear casing /containment
shell.
8. The discharge piping should be equal in size to the pump outlet port.
9. A stop valve and a check valve should be installed in the discharge line. The stop valve is used
when starting and stopping the pump, and to isolate the pump for maintenance. It is advisable to
close the stop valve before stopping the pump. The check valve will protect the pump from water
hammer damage. These recommendations are especially important when the static discharge head
is high.
NOT RECOMMENDED NOT RECOMMENDED
Fig. 5-1: Pump Installations
AIR POCKET

12
5-b. FOUNDATION
Fi
g
. 5-2
1. The foundation should be sufficiently substantial to absorb vibration and form a permanent, rigid
support for the base plate. This is essential for maintaining alignment of a long coupled unit. A
concrete foundation should be satisfactory. Embed foundation bolts of the proper size (1/2" -13 x
7" recommended for ordinary installation) in the concrete, located by a drawing or template. Use a
pipe sleeve larger than the bolt to allow enough base movement for final positioning of the bolts.
2. Support the base plate on rectangular metal blocks and shims, or on metal wedges with a small
taper. Place the support pieces close to the foundation bolts. A spacing of 24" is suggested. Allow
a gap of 3/4" to 1-1/2" between the base plate and the foundation for grouting.
3. Adjust the metal supports or wedges until the shafts of the pump and driver are level. Check the
horizontal or vertical positions of the coupling faces as well as the suction and discharge flanges of
the pump by means of a level. Correct the positions, if necessary, by adjusting the supports or
wedges under the base plate as required.
4. When alignment is correct, tighten foundation bolts evenly but not too firmly. The units can then
be grouted to the foundation. The legs of the base plate should be completely filled with grout and
the leveling pieces, shims, or wedges should be grouted in place. The foundation bolts should not
be tightened until the grout is hardened, usually about 48 hours after pouring.
Never operate the pump without first securing it into position.

13
5-c. INSTALLATION AND ELECTRICAL CONNECTIONS
Ansimag K Series pumps are easily inspected without removing the casing from any piping, by
separating the drive end from the wet-end. In a close-coupled pump this requires moving the motor,
drive magnet and bracket backwards and away from the casing. To be able to do this the motor must
have sufficient clearance behind the motor fan cover to move the motor backward approximately 6"
[150 mm]. Close-coupled installations should feature the following:
1. Allow at least 6" [150 mm] of clearance behind the motor.
2. The base plate under the motor must be flat and long enough to allow for safe movement of the
motor.
3. The motor electrical wiring should include a flexible section near the motor to allow movement of
6" for servicing of the pump without disconnecting piping. The recommended installation is
illustrated in Figure 5-3.
Fig.5-3: Flexible Electrical Connection on the Motor
5-d. EARTHING ARRANGEMENT
Pumps that have been supplied in accordance to the ATEX Directive (94/9/EC) will be identified by a label with
the following symbol on it:
Such units are supplied with an earthing ground lug that is attached by a M6 screw (60-70 in-lb) and a lock
washer (kit, P4107) to the bracket. Once the unit is installed and leveled, it should be wired to earth with a
suitable earthing cable.
Fig. 5-4: Earthing Arrangements

14
6. PUMP START UP AND SHUTDOWN
6-a. PRE-START CHECKLIST
Before initial start up and after inspections of the wet end of pump, perform the following inspections:
1. Manually turn the motor fan or flexible coupling to insure that it rotates freely. For a motor
mounted directly to the pump (close coupled), insert a screwdriver or other tool through the fan
cover and rotate the fan. It should rotate freely.
2. Make sure that the pump is full of liquid and the suction valve is open.
3. Fully open the discharge valve once and then close it, so that any air trapped in the pump and
suction line can be purged.
4. Check all electrical connections with a wiring diagram. Make sure that the voltage, frequency and
horsepower on the motor nameplate match the line circuit.
Caution!: K Series horizontal end suction models are not self-priming pumps! The pump must be
filled with liquid by gravity from a flooded suction tank or primed by other methods such as injecting
liquid from an outside source into the pump and suction line with an attached foot valve.
6-b. START UP AND OPERATION
1. With the pump full of liquid, check motor rotation by jogging pump and motor for about 1/2
second. The proper rotation is clockwise as viewed from the motor fan end. Once proper motor
rotation is confirmed jog 5 or 6 times more. This process is very important to fully wet sleeve
bushing and pump shaft, and to purge some of the air trapped in the pump and discharge line.
Open the discharge valve once and close it again so that more air can be released downstream.
2. Turn the pump on. Open the discharge valve slowly. It is important to open the valve very
slowly. Sudden opening of the valve while air is trapped between the pump and the valve may
cause water hammer.
3. Keep the suction valve fully opened. Do not use the suction valve to adjust flow rate. Adjust
the flow rate with the discharge valve only.
4. Subsequent pump starts do not require motor jogging or valve position changes provided that the
piping and pump has remained full of liquid.

15
Caution! Do not run the pump dry. The pump may be severely damaged. The pumps use slide
bearings that are lubricated by the pumped product. No lubrication, no bearings. Even short
periods of dry running could damage the pump.
Caution! Do not Dead Head. Although the radial loads on the bearings are not a concern, the
liquid in the pump will rapidly increase in temperature. This will continue until the boiling point is
reached. Some liquids boil at temperatures sufficient to melt pump components and destroy the
magnets. Other liquids will flash into vapor. This vapor collects at the bushing causing dry
running.
Caution! Mag Drive Mismatch. Do not use inner and outer magnet assemblies with unlike
drives (AK with BK, CK with AK, etc.). Mismatch of drives will prevent coupling from occurring
and will damage the pump. Typically, the pump will make a loud buzzing noise with little or no
flow and head developed.
Caution! Cavitation. Prolonged cavitation may cause pitting on the pump components. Short term
severe cavitation, such as that caused by a closed suction will damage the pump bearings.
Caution! Water Hammer. Sudden changes in fluid velocity can cause large, rapid pressure
surges. These pressure surges can damage the pump, piping and instrumentation. Typical causes
are rapidly closing valves. Check valves on the suction can also cause water hammer if the liquid
has time to reverse direction before the valve closes.
Recommended! Power Monitors. We recommend installing a Sundyne power monitor on all
pumps. These devices are very effective at protecting the pumps from dry running, cavitation or
when frequent overload is expected. They are also very effective for stoppage during tank
unloading applications.
•Dry Running •Pump Seizure
•Closed Valve •Severe Cavitation
•Clogged Suction Filter •Excess (High) Flow
6-c. SHUTDOWN
If the pump is to be shut down for any reason, use the following procedure:
1. Close the discharge valve slowly to prevent water hammer.
2. Shut off the motor.
3. Close the suction valve.

16
Safety
TEMPERATURE CLASSIFICATION - (ATEX DIRECTIVE 94/9/EC)
The maximum surface temperature of a metallic magnetic drive pump is the highest temperature
ascertained from any one of the following conditions:
1. The temperature of the pumped liquid, plus 20°C.
or
2. The ambient temperature plus 20°C.
or
3. The ambient temperature plus 39°C (only in the case of separately mounted pumps with oil lubricated
bearing assemblies)
or
4. The temperature of the heating medium being used in the heating jacket (if fitted)
The actual classification is calculated by obtaining the maximum surface temperature and than using the
following table to obtain the relevant Temperature Class:
Temperature Class Maximum Surface
Temperature (°C)
T1 450 (842°F)
T2 300 (572°F)
T3 200 (392°F)
T4 135 (275°F)
T5 100 (212°F)
T6 85 (185°F)
E
xample:
The pump is pumping a liquid with a temperature of 120°C. The pump is close coupled and therefore
does not have an external oil lubricated bearings. The maximum ambient temperature in which the pump
may operate is 30°C
Condition 1 equates to 120°C + 20°C = 140°C
Condition 2 equates to 30°C + 20°C = 50°C
Condition 3 does not apply.
Condition 4 does not apply.
Thus the maximum surface temperature of the pump is 140°C which equates to a temperature
classification of T3.

17
7. DISASSEMBLY AND MAINTENANCE
WARNING! Before disassembly, the pump must have the drive "locked out" and be flushed of all
dangerous liquids. Follow all Federal, State, Local and company regulations with regard to pump
decontamination prior to disassembly and inspection. Ansimag K Series pumps are provided with a
low point casing drain to maximize pump decontamination.
Both the long coupled and close coupled K Series pumps can be pulled back from the casing. Therefore,
if permitted by company regulations, pump disassembly and inspection can be conducted on site.
Before inspecting, be sure to have a spare casing O-ring on hand to reinstall after the inspection is
completed.
7-a. BASIC DISASSEMBLY FOR INSPECTION
1. Stop the pump, lock out the
pump starter, shut off all the
valves connected to pump,
and drain and decontaminate
the pump. Warning! Be
sure pump is flushed of
dangerous or hazardous
liquids and all internal
pressure is relieved before
opening the pump for
inspection.
Fig. 7-1: K Series Pump Fig. 7-2: Casing Drain
2. Remove the bolts securing
the motor and/or the bracket
to the base. Remove the
bolts securing the pump
bracket to the rear support.
Fig. 7-3: Unbolt from Base Fig. 7-4: Unbolt Bracket from
Rear Support

18
3. Use the jackscrews to separate the
motor and pump drive end at least
6" [150 mm] back from the pump
wet end.
Caution! Cantilevered mounts
require that the motor fan end
be supported.
Caution! You are separating
the magnet coupling.
LONG COUPLED PUMPS:
Remove coupling guard and
coupling. Remove bolts securing
pump-bearing frame to rear
support. Pull bearing frame back
from pump wet end.
Caution! You are separating
the magnet coupling. Fig. 7-5: Use Jackscrew to
Pull Motor Back Fig. 7-6: Motor Separated 6" from Pump Wet End
4. Remove bolts (6 or 8) securing the
rear support to the pump casing.
Carefully pull back the rear
support and containment shell unit.
Caution! Wear protective
clothing, eyewear and gloves as
required for the pumped liquid.
Caution! The impeller assembly
contains very powerful magnets.
Keep impeller separated from
magnetic tools and structures.
Fig. 7-7: Unbolt Rear
Support from Pump Casing Fig. 7-8: Remove Rear Support
5. The impeller and shaft may come
with the containment shell or
remain in the pump casing.
Remove the impeller from the
casing. Remove the shaft from the
impeller.
Caution! If the shaft is dropped
on a hard surface such as
concrete the impact may cause
the shaft to break.
Fig. 7-9: Remove Impeller
from Pump Casing OR … Fig. 7-10: Remove
Impeller from Containment
Shell

19
7-b. INSPECTION CHECKLIST
Since most wearing parts on a mag drive pump cannot be monitored, it is important to inspect the pump
for wear after the initial 500 hours or three months of operation, whichever comes first. Inspect again in
six or twelve months, depending on the results of the first inspection.
Before inspecting, be sure to have a spare casing O-ring on hand to reinstall after the inspection is
completed. To inspect the pump interior, be sure that the pump has first been flushed of all dangerous
liquids.
Operating conditions vary so widely that recommending one schedule of preventive maintenance for all
centrifugal pumps is not possible. In the case of magnetic drive pumps, particularly of non-metallic
pumps, traditional maintenance techniques such as vibration monitoring are not useful or reliable
for wet end preventive maintenance. These techniques are effective only for bearing frames (non-
liquid contact components) and for motor bearings. For best maintenance results, keep a record of
actual operating data such as flow, pressure, motor load, and hours of operation. The length of the safe
operation period will vary with different applications and can be determined only from experience.
The inspection checklist is as follows:
1. Check for cracks in silicon carbide parts such as the thrust ring and shaft.
2. Check for signs of melting or deforming in the shaft support, bushing and the socket of the
containment shell where the pump shaft is held. Dry-running during initial startup or during
operation may cause heat-related deflection or wear of these parts.
3. Inspect the casing liner to be sure there are no signs of abrasion or cuts deeper than 0.05" [1.3 mm].
Liner cracks may occur if the lining is corroded or placed in an extremely cold place, or if a
chemical penetrates the liner and corrodes the outside metal casing. Most liner damage can be
spotted visually. To detect hairline cracks, a 15-20 KV electrostatic discharge tester is
recommended, which is often used to test lined pipe.
4. The 1.25" carbon bushing should be checked for wear and scoring or grooving. The dimensions are
given in Section 7-c. The 1.25" SiC bushing will not exhibit wear under normal operation.
Polishing on SiC surfaces is a normal condition of running and does not require replacement.
However, the inner surface must be checked for cracks, chips or scratches. Verify that the main
bushing is tightly pressed into the impeller. It should be impossible to dislodge the bushing by
hand. Check for signs of melting around the circumference of the main bushing.
Fig. 7-11
5. Check the mouth ring face for wear. The lubrication flutes are reliable
indicators of mouth ring wear. If they are not visible, it is time to replace
the mouth ring. A part replacement procedure is described in
Section 7-d. If a CFR Teflon® mouth ring is used and excessive
wear is observed, replace it with a silicon carbide mouth ring.
LUBRICATION FLUTE
S
Fig. 9-1

20
6. Check the impeller vanes for material trapped inside. If any of the five flow paths become
clogged, a hydrodynamic imbalance may cause excessive wear to the mouth ring and main bushing.
7. Check the inner magnet encapsulation for cracks or grooves in excess of 1/32" [0.8mm]. Fluid
inside the magnet area may cause swelling which could wear on the containment shell.
8. Check impeller and inner drive lugs for looseness or swelling due to plastic deformation. If
necessary, removal of the bushing and separation of the impeller and inner drive are required to
further inspect the impeller snap fit tabs and contact surfaces of the drive lugs. Replace the impeller
if the snap fit tabs or drive lugs are visibly cracked or deformed. Replace the inner drive if the drive
lug contact surfaces are swollen or deformed. Note: See Parts Replacement Procedures for
additional instruction and tooling.
9. Check for slurry. If the pumped liquid contains slurry, it may build up near the back of the main
bushing . This build-up may cause clogging of the journal bearing area of the main bushing and
create a dry-run condition. Estimate the rate of build-up from the first inspection and schedule the
unit for future maintenance accordingly.
10. Inspect the containment shell for signs of abrasion. Replace if scratches or grooves in the inner
surface are deeper than 1/32" [0.8mm]. Also replace if the outside has grooves deeper than 0.020
[0.5mm] inches. Inspect the back thrust ring for chips or cracks.