Motor Replacement; Pump Reassembly - HP Pressure Booster Pumps 0306 Operating Instructions And Parts Manual

Maintenance (Continued)
NOTE: Liquid soap solution - one drop of liquid soap com-
bined with one teaspoonful of water.
5. With thumb pressure, press ceramic seal half firmly and
squarely into seal cavity. Polished face of ceramic seat
is up. If seal will not seat correctly, remove, placing seal
face up on bench. Reclean cavity. Seal should now seat
correctly (See Figure 14).
6. If seal does not seat correctly after recleaning cavity,
place a cardboard washer over polished seal face and
carefully press into place using a piece of standard clean
3/4" pipe as a press (See Figure 15).
IMPORTANT: Do not scratch seal face.
7. Dispose of cardboard washer and recheck seal face to
be sure it is free of dirt, foreign particles, scratches and
grease.
8. Inspect shaft to be sure it is free of nicks and scratches.
9. Apply liquid soap solution sparingly (one drop is suffi-
cient) to inside diameter of rubber rotating member.
10. Slide rotating seal member (carbon face down toward
ceramic face) and spring over the shaft.
IMPORTANT: Do not nick or scratch carbon face of seal
when handling.

MOTOR REPLACEMENT

The motor can be replaced with any standard Nema 56J jet
pump motor (of proper HP for each pump) by referring to
the following instructions.
1. Follow steps as outlined under Rotary Seal Replacement
and Pump Disassembly.
Figure 13 - Remove Mechanical Seal
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2. Remove cap screws that connect the motor to the
mounting ring and pull motor away.
3. Replace motor with standard Nema 56J jet pump motor
by positioning motor against the mounting frame and
assembling with four (4) cap screws.
IMPORTANT: Because damage to the shaft seal can occur in
disassembly, a new seal will be necessary.

PUMP REASSEMBLY

Before reassembling the pump, carefully inspect the com-
ponent parts of the cartridge (stage) assembly, looking for
damage, wear or heat distortion. Pay careful attention to
spacing direction of components, and location of shims.
Refer to Figure 16 for proper facing and parts arrangement.
If damage to Stage components is evident, a complete car-
tridge assembly or individual stage assemblies are available
for replacement (See Replacement Parts List).
1. Reassembly should follow the reverse order of the disas-
sembly procedure with special care given to replacement
of the rotary seal.
2. Check top and bottom of o-rings for damage. It is recom-
mended that new o-rings be used.
3. Do not use pipe compound of Teflon tape on barrel
threads. The o-rings will prevent pump from leaking.
4. After pump is reassembled, tighten the discharge head to
a torque of 45-50 ft/lbs. If torque wrench is not available,
tighten firmly but avoid distortion or damage to plastic
internal parts.
5. After reassembly, apply power momentarily to unit (15 to
30 seconds). The pump and motor should rotate freely or
with a light rubbing.
Figure 14 - Press In Seal
10
3/4" Pipe
Press Carefully
Cardboard
Washer
Protects Seal
Face
Seal Cavity
IL0554
Figure 15 - If Necessary, Press With
Cardboard And Pipe
Seal