Maintenance; Pump Disassembly - Pentair Myers PQP10 Owner's Manual

MaiNtENaNcE

Pump and piping need not be disconnected to repair
or replace motor or seal (see Figure 19). If motor is
replaced, replace the shaft seal. Keep one on hand for
future use.
Be sure to prime pump before starting.
NOticE: Check motor label for lubrication instructions.
The mechanical shaft seal in the pump is water
lubricated and self-adjusting.
NOticE: Drain pump when disconnecting from service
or when it might freeze.

PUMP DiSaSSEMBly

1. Disconnect power to motor.
NOticE: Mark wires for correct assembly.
figure 18 – Disconnect Power
2. Remove clamp (see Figure 19).
3. Remove pump base mounting bolts. Motor assembly
and back half of pump can now be pulled away from
pump front half (Figure 19). CAREFULLY remove
O-ring.
figure 19 – Slide Motor Back
Maintenance
clEaNiNG/rEPlaciNG iMPEllEr
NOticE: First, follow instructions under "Pump
Disassembly".
1. Remove four screws fastening diffuser to seal plate;
remove diffuser (see Figure 20). Exposed impeller
can now be cleaned.
figure 20 – remove Diffuser
2. If impeller must be replaced, loosen two machine
screws and remove motor canopy (see Figure 21).
548 0405
figure 21 – Hold Shaft
3.
To discharge capacitor, hold insulated handle
screwdriver By tHE HaNDlE and short capacitor
terminals together (see Figure 21). Do not touch
metal screwdriver blade or capacitor terminals. If in
doubt, consult a qualified electrician.
4. Unscrew capacitor clamp and remove capacitor. Do
not disconnect capacitor wires to motor.
542 0405 5. Slide 7/16" open end wrench in behind spring
loaded switch on motor end of shaft; hold motor
shaft with wrench on shaft flats and unscrew
impeller by turning counterclockwise when looking
into eye of impeller.
6. To reinstall, reverse steps 1 through 5.
7. See directions under "Pump Reassembly," Page 11.
9
To avoid electrical
shock hazard, use
insulated-handle
screwdriver to short
capacitor terminals
as shown.
capacitor voltage may be hazardous.
753 0993
739 0993