Xylem IM125 R02 RJA & RJDS Quick Set User Manual

Page 9

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FIGURE 11

CERAMIC SEAL

ROTATING SEAL

CASE BOLT

MOTOR SHAFT

SEAL PLATE

O-RING

SEAL BOOT

IMPELLER

DIFFUSER

O-RING

Step 7. Disinfect the well using a cup of household bleach.
Let the water stand for a 3-4 hours. Test it for purity with the
local Health Department before using.

Step 8. To assure continued primability, tighten all plugs to
prevent air leaks.

Section 6

Maintenance

Lubrication:
A. The pump requires no lubrication.
B. For the electric motor, refer to instructions provided by
the motor manufacturer.

SEAL REPLACEMENT

Seal Removal:
1. Disconnect electrical service to the pump.
2. Relieve system pressure by opening a faucet or drain

valve until water stops flowing.

3. Disconnect pressure switch tubing at the barbed fitting

on the pump case. If tubing does not slide off barbed
fitting easily, cut it as close to the fitting as possible.

4. Remove the four cap screws which hold the pump seal

plate and motor to the pump case. Piping need not be
disturbed.

5. Remove the pumping assembly, as one piece, (motor,

seal plate, diffuser, and impeller) by carefully prying
them apart from the pump case. Exercise care so as not
to damage the impeller.

6. Remove the diffuser from the seal plate exposing the

impeller.

7. Insert a regular slotted screwdriver into the slot in the mo-

tor shaft end at the impeller center.

8. While holding the motor shaft with the screwdriver, un-

screw the impeller by turning counter-clockwise.

9. Slide rotating part of seal assembly from shaft (Figure 11).

Separate seal plate from motor.

10. Remove stationary part of seal assembly (including rub-

ber seal boot) from seal plate.

New Seal Installation:
1. Clean polished surface of stationary seal with a clean

cloth.

2. Wet the outer edge of the rubber seal boot with a soap

solution.

3. Insert rubber seal boot and ceramic seal (polished side

exposed) into seal plate. Make a cardboard washer to
cover the ceramic seal surface to be used while pressing
seal into position. Cardboard washer is used to avoid
scratching ceramic surface. Discard cardboard washer
after ceramic seal installation. (Figure 11).

4. Reposition seal plate onto motor and slide rotating seal

assembly onto motor shaft with carbon sealing face first
until rubber end ring slides over shaft shoulder.

5. Screw impeller clockwise onto motor shaft using screw-

driver in shaft end slot to hold the shaft.

6. Reattach diffuser to seal plate and carefully reposition the

pumping assembly to the pump case. Attach with the
four cap screws.

7. Connect the pressure tubing by pressing on to barb fit-

ting on pump case until tubing shoulders against stop
edge of fitting. If tubing was cut off, carefully remove
excess tubing from barb fitting with a knife, taking care
not to scratch the fitting.