Flint & Walling CPJS Shallow Well - Manual (Page 22)

22
Rotary Seal Assembly Replacement
CAUTION: Make certain that the power supply is
disconnected before attempting to service the unit!
The rotary seal assembly must be handled carefully
to avoid damaging the precision lapped faces of the
sealing components.
1. Disengage pump body from motor and mounting ring.
2. Remove diffuser and unthread impeller from the motor
shaft. The motor shaft can be held by using a 9/16”
open end wrench on the flats located in the middle of
the mounting ring.
3. The rotary seal will come loose at this time. Use a
screwdriver (or similar instrument) to pry the ceramic
seal and rubber gasket from the recess of the mounting
bracket.
CAUTION: Be careful not to damage the motor
shaft or recess surface.
4. Clean the recess and motor shaft thoroughly.
5. Install the new rotary seal assembly:
a. Insert the ceramic seal and the rubber gasket into
the recess.
NOTE: To help facilitate installation, apply one drop of
liquid soap solution to the outside diameter of the rubber
gasket. Make certain that the ceramic seal is kept clean
and free of dirt and/or oil.
Liquid Soap Solution: One drop of liquid soap combined
with one teaspoon of water.
b. Slip the remaining parts of the rotary seal assembly
onto the motor shaft.
NOTE: Apply a light coating of liquid soap solution to the
inside diameter of the rubber drive ring.
6. Replace the impeller and diffuser removed in Step 2.
7. Reassemble the pump body to the motor and mounting
bracket.
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.
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.
Because damage to the shaft seal can occur in
disassembly, a new seal will be necessary.
4. Follow steps 4, 5, 6 & 7 of Rotary Seal Assembly to
reassemble the remainder of the pump.
CARE AND MAINTENANCE