Section Six - Maintenance; Disassembly - WDM PI Operation Manual

PI Operation Manual
6. SECTION SIX – MAINTENANCE
To perform the maintenance of the PI pump, no special (custom made) tools are needed.
Before initiating maintenance procedures disconnect all power sources to the equipment and
discharge any parts which may retain an electric charge. Use proper locks to avoid accidental start-up
of the pump system. Failure to comply may result in severe personal injury.
When performing the maintenance of the pump, use the safety equipment appropriate for the
pumped fluid, materials, and location of the equipment, such as gloves, safety glasses, harnesses
and other equipment regarded as mandatory by the plant's safety instructions.

6.1 DISASSEMBLY

Depending on the extent of the required disassembly, follow the next steps to disassemble your PI
pump.
1. Stop the pump. See
2. Drain all possible fluids from the pump case.
3. Disconnect any auxiliary piping and wiring that could interfere with disassembly.
4. When disassembling the pump, match mark, tag or otherwise identify all parts, and provide separate
containers for small parts. Refer to the pump sectional drawing included in
INFORMATION
for proper identification of parts.
5. Remove the coupling guard, first loosen the screws and remove them, then remove both coupling
guards.
6. Remove coupling as follows:
a. Unscrew the bolts from both parts of the coupling.
b. Remove the washers from both parts of the coupling.
c. Draw out of the shaft both parts of the coupling.
7. Loosen the setscrews on the mechanical seal.
8. Remove keys from the motor and the shaft.
Note: For maintenance on Outside Balanced Mechanical Seal only, skip step 9 and proceed
to step 10 (a – h) as motor removal is not required.
9. Unscrew the motor (driver) from the adapter and remove it.
SECTION 5.4 - STOPPING.
SECTION EIGHT - PARTS
23
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