SPX Marley MH Series User manual

fluid cooler pump
INSTALLATION - OPERATION - MAINTENANCE
uk_M05-1109A ISSUED 03/2014 READ AND UNDERSTAND THIS MANUAL PRIOR TO OPERATING OR SERVICING THIS PRODUCT.
USER MANUAL

2
contents
Inspection .....................................................................................................................3
Handling........................................................................................................................3
Operation......................................................................................................................3
Maintenance.................................................................................................................5
Mechanical Seal Assembly.......................................................................................6
Mechanical Seal Replacement ................................................................................9
Note
This manual contains vital information for the proper operation and
maintenance of your Marley MH Fluid Cooler Pump. Carefully read
the manual before operation and follow all instructions. Save this
manual for future reference.
Indicates presence of a hazard which will or can cause personal
injury or property damage if ignored.
Indicates special instructions on installation, operation or
maintenance which are important but not related to personal injury
hazards.
Caution
Note
The following defined terms are used throughout this manual to bring attention
to the presence of hazards of various risk levels, or to important information
concerning the life of the product.

3
inspection
Pre-Start
Before initial start of the pump, check as follows:
1. The rotation must be checked upon installation. Close, then break the
contacts quickly and observe the rotation of the exposed portion of the
rotating parts. Rotation must agree with the rotation arrow on the motor. For
all pumps, the standard rotation is counterclockwise when viewed from the
suction end. Motor wiring is easily changed in the field. Observe the wiring
diagram on the inside of the terminal box cover, or on the motor nameplate.
2. Check voltage, phase and frequency of line circuit with motor nameplate.
3. Check the suction hood and discharge piping for proper installation.
4. Assure that the collection basin is filled with water to the level indicted
in Startup portion of the MH Fluid Cooler User Manual. This water level
ensures that the pump is primed.
Check pump for shortage and damage immediately upon arrival.
Note damage or shortage on freight bill (bill of lading); immediately
notify your Marley sales representative.
EXTERIOR
Pay particular attention to conduit box, external hardware and accessories.
Touch up abrasions or scratches with approved paint.
INTERNAL
If extensive or serious external damage is noted, if impeller is damaged (look
in ports), or if shaft binds or sticks, disassemble as required to permit internal
inspection.
handling
Handle with care. Dropping or jarring can seriously damage motor
bearings or break pump parts. Lift with device having capacity for
pump weight, and use lifting hooks or eye bolts (if provided) or rig
double sling around motor frame and pump casing. Do not use sling
through pump motor adapter nor around suction and discharge
flanges.
operation
Caution
Note
➠

4
operation
Do not run pump dry hoping it will self-prime.
Serious damage may result if started dry.
Starting
Proceed as follows to start pump:
1. Prime the pump as outlined in Pre-Start. If pump does not prime properly,
or loses prime during start-up, shut down and correct condition before
repeating procedure.
2. Start the motor (pump).
Running
Periodically inspect pump while running, but especially after first start and
following repair.
1. Check pump and piping for leaks. Repair immediately.
2. Record voltage, amperage per phase, and kW (if an indicating wattmeter
is available).
Freezing Protection
Protect pumps shut down during freezing conditions by one of the
following methods:
1. Drain pump; remove all liquid from the casing.
2. Keep fluid moving in pump and insulate or heat the pump to prevent freezing.
If heated, do not let temperature go above 38° to 66°Cº.
3. Fill pump completely with antifreeze solution.
Caution

5
➠
maintenance
Cleaning
• Remove oil, dust, dirt, water, chemicals from exterior or motor and pump.
• Keep motor air inlet and outlet open.
• Blow out interior of open motors with clean compressed air at low pressure.
• Regularly drain moisture from TEFC motors.
Temperature
Total temperature, not the rise, is the measure of safe operation for a motor.
If temperature by thermometer exceeds limits for insulation class, investigate
and change operating conditions.
Labeled Motors
It is imperative for repair of a motor with Underwriters’ Laboratories label that
original clearances be held; that all plugs, screws, other hardware be fastened
securely, and that parts replacements be exact duplicates or approved equals.
Violation of any of the above invalidates Underwriters’ label.
Lubrication
Pumps should requireno maintenance. Dueto the doubleshielded prelubricated
bearings, no lubrication is required for the life of the bearings. Inspect bearings
periodically to determine the condition of the grease and replace the bearings
if necessary.

6
➠
JM FRAME MOTOR
A. Disassembly:
1. Turn off power.
2. Drain pump.
3. Remove bolts holding base to foundation
4. Remove pump casing bolts.
5. Remove motor and rotating element from casing, leaving casing and piping
undisturbed.
6. Insert a screwdriver in one of the impeller waterway passages and back off
the impeller retaining assembly with a socket wrench, as shown in Figure 1.
7. Remove impeller from shaft, being careful not to lose the impeller key, spring
and seal retainer. If impeller is difficult to remove, it may be necessary to
use a bearing puller to pull off impeller.
8. Pry off rotating member of mechanical seal from sleeve by using two (2)
screwdrivers.
9. Remove bolts holding adapter to motor and take off adapter.
10. Place adapter on a flat surface with case rabbet facing down, and push
out stationary part of mechanical seal.
11. Inspect the shaft sleeve, shaft O-ring and flinger. If damaged or worn,
remove and replace with a new one.
Figure 1 Back off the impeller retaining assembly.
mechanical seal assembly

7
mechanical seal assembly
Figure 2 Prying off the rotating member.
B. Reassembly:
The mechanical seal is a precision product and should be handled
accordingly. Use care when handling the lapped running surfaces
of the mechanical seal to ensure they remain clean and free of
chips or scratches.
1. Clean gasket and flange faces, seal seat cavity, shaft sleeve, and motor shaft.
2. Lubricate the seal seat cavity of the adapter and the rubber cup or O-ring
of seal seat with the lubricating fluid that comes with the mechanical seal or
repair kit. Press the stationary seat in seal seat cavity of the adapter squarely
and evenly using a arbor press (if possible) and the cardboard disc supplied
with the seal. Be certain that the lapped face (shiny side) is facing you.
3. Install the flinger on the motor shaft until it bottoms on the motor shaft.
4. Slide the shaft O-ring on the motor shaft until it is tight against the flinger.
Make sure that the shaft O-ring does not get damaged during this procedure.
➠
Note

8
5. Position shaft sleeve chamfer towards motor and slide on motor shaft.
6. With motor preferably in vertical position, remount the adapter on motor,
making sure the motor shaft does not dislocate or chip the stationery seat
of the seal.
7. Apply the lubricating fluid that comes with the mechanical seal or repair
kit to the shaft sleeve and the rubber bellows of the rotary seal. Slide the
seal head on the sleeve; press the rubber drive band on the rotary head
until the lapped face on the head seats firmly against the lapped face of
the stationary seat. Do not chip or scratch faces during installation. Take
extra care to make sure the lapped faces are clean. Install seal spring on
seal head and retainer on spring.
8. Place key in key seat. Line up keyway in impeller with key on motor shaft,
and slide impeller on motor shaft. Be certain that the key is positioned in the
keyway of the motor and impeller. Slightly compress seal spring with impeller
and hold impeller while installing impeller retaining assembly in motor shaft.
9. Insert a screwdriver in a waterway passage of the impeller holding it against
rotation and tighten the retaining assembly as discussed in paragraph 7
of disassembly instructions. The impeller will compress the seal spring to
the proper length assuring the correct pressure on the lapped surfaces.
10. Remove any burrs caused by screwdriver on the vane of impeller in
waterway passage.
11. Slide motor and rotating element in casing. Be sure that any damaged
O-ring or gasket is replaced.
12. Tighten casing bolts alternately and evenly.
13. Replace hold-down bolts.
14. Check for free rotation after assembly is completed.
15. Seal all drain openings using pipe sealant on threads.
16. Reprime before starting. Do not start until pump is completely filled with
water.
mechanical seal assembly

9
➠
C56 FRAME MOTOR
A. Disassembly:
Refer to “JM FRAME” Disassembly, Notes 1-11.
12. Inspect the stub shaft. If damaged or worn, replace with a new one; removal:
A. Drive pin from stub shaft and remove pin.
B. Loosen set screws
C. Remove stub shaft from motor shaft.
Assembly:
For motors with drilled hole:
A. Slide stub shaft on motor shaft. Line up set screws in stub shaft with
motor keyway, and drilled hole in stub shaft with drilled hole in motor
shaft.
B. Tighten set screws
C. Insert #12 drill in pilot hole of stub and motor shaft. Drill out opposite
side of stub shaft.
D. Install pin
For motors without a drilled hole in the motor shaft:
A. Slide stub shaft on motor shaft. Line up set screws in stub shaft with
keyway in motor shaft.
B. Position stub 78.5 mm from Motor C face. (See Figure 3)
C. Tighten set screws
mechanical seal replacement
78.5
Figure 3 Positioning the stub.

10
D. Insert #12 drill in stub shaft pilot hole and drill completely through motor
shaft and opposite side of stub shaft. See Figure 4.
E. Install pin
B. Reassembly:
The mechanical seal is a precision product and should be handled
accordingly. Use care when handling the lapped running surfaces
of the mechanical seal to ensure they remain clean and free of
chips or scratches.
1. Clean gasket and flange faces, seal seat cavity, and stub shaft.
2. Lubricate the seal seat cavity of the adapter and the rubber cup or O-ring
of seal seat with the lubricating fluid that comes with the mechanical seal or
repair kit. Press the stationary seat in seal seat cavity of the adapter squarely
and evenly using a arbor press (if possible) and the cardboard disc supplied
with the seal. Be certain that the lapped face (shiny side) is facing you.
3. With motor preferably in vertical position, remount the adapter on motor,
making sure the stub shaft does not dislocate or chip the stationery seat
of the seal.
mechanical seal replacement
➠
Figure 4 Positioning the stub.
Caution

11
4. Apply the lubricating fluid that comes with the mechanical seal or repair
kit to the stub shaft and the rubber bellows of the rotary seal. Slide the
seal head on the stub; press the rubber drive band on the rotary head until
the lapped face on the head seats firmly against the lapped face of the
stationary seat. Do not chip or scratch faces during installation. Take extra
care to make sure the lapped faces are clean. Install seal spring on seal
head and retainer on spring.
5. Place key in key seat. Line up keyway in impeller with key on stub shaft,
and slide impeller on stub shaft. Be certain that the key is positioned in the
keyway of the stub and impeller. Slightly compress seal spring with impeller
and hold impeller while installing impeller retaining assembly in stub shaft.
6. Insert a screwdriver in a waterway passage of the impeller holding it against
rotation and tighten the retaining assembly as discussed in paragraph 7 of
disassemby instructions for JM shaft. The impeller will compress the seal
spring to the proper length assuring the correct pressure on the lapped
surfaces.
7. Remove any burrs caused by screwdriver on the vane of impeller in waterway
passage.
8. Slide motor and rotating element in casing. Be sure that any damaged
O-ring or gasket is replaced.
9. Tighten casing bolts alternately and evenly.
10. Replace hold-down bolts.
11. Check for free rotation after assembly is completed.
12. Seal all drain openings using pipe sealant on threads.
13. Reprime before starting. Do not start until pump is completely filled with
water. The approved lubricating fluid for seal installation is included with
the mechanical seal or repair kit.
Do not use other lubricating liquids. We recommend stocking a
spare mechanical seal or repair kit to eliminate down time.
mechanical seal replacement
Caution

SPX COOLING TECHNOLOGIES UK LTD
3 KNIGHTBRIDGE PARK
WAINWRIGHT ROAD
WORCESTR WR4 9FA, UK
P: 44 1905 750 270
F: 44 1905 750 299
[email protected]
In the interest of technological progress, all products are subject to design
and/or material change without notice
ISSUED 03/2015 uk_M05-1109A
COPYRIGHT ©2015 SPX Corporation
fluid cooler pump
user manual