Flint & Walling FJ Shallow Well User Manual

Page 6

Winterizing
If pump is located in an area subject to freezing
temperature, the pump should be drained when it is
not in service or in danger from freezing.
Winterizing (Continued)
1. Disconnect power.
2. Slowly and carefully release all water pressure.
3. Drain suction pipe to a point below the frost line.
4. Drain all piping exposed to freezing

temperatures.

5. Remove the 1/4” drain plug located on the

bottom of the pump body (See Figure 1).

6. Remove the priming plug from service tee to

vent pump.

7. Drain pressure tank.
Pump Disassembly
To disassemble the pump, refer to Fig. 14 and the
following instructions.
1. Disconnect power to motor.
2. Remove for (4) hex bolts (Ref. No. 18) and

remove the pump body (Ref. No. 10) from motor.

3. Remove three (3) hex bolts and washers (Ref.

No. 17) and remove diffuser (Ref. No. 7) and
diffuser plate (Ref. No. 9).

NOTE: The seal ring (Ref. No. 6) is generally
reusable. However, check to see if cut or damaged
and replace if necessary.
Cleaning/Replacing Impeller
(See Figure 15)
NOTE: First, follow instructions under “Pump
Disassembly”.
1. With diffuser removed, (Ref. No. 7) the exposed

impeller can now be cleaned.

2. Remove impeller (Ref. No. 5) by unthreading

counter-clockwise while looking into the eye of
impeller. To hold motor shaft, remove two (2)
screws (Ref. No. 16) and remove motor end cap.
Use the screwdriver shaft at the back of motor
shaft.

3. To reinstall, reverse steps 1 and 2 and re-mount

diffuser.

4. Re-assemble the pump body (Ref. No. 10) to the

motor bracket (Ref. No. 19).

NOTE: Because damage to the shaft seal can
occur in disassembly, a new seal will be required.
Mechanical Seal Replacement
(See Figure 15)
1. Follow instructions under “Pump Disassembly”.
2. Follow steps 1 and 2 under “Cleaning/Replacing

Impeller”.

3. Remove the mechanical seal assembly.

Using two screwdrivers, pry the rotary
portion of the seal assembly (carbon ring,
Buna-N gasket and spring) off the end of
the shaft.

Using two (2) screwdrivers, pry the ceramic
seal and rubber gasket from the recess of
the mounting ring (See Figure 9).

The precision lapped faces of

the mechanical seal are easily damaged. Handle
the replacement seal carefully. Short seal life will
result if seal faces (ceramic & carbon) are nicked,
scratched or dirty.
4. Clean the seal cavity of the motor bracket and

the motor shaft thoroughly.

5. Wet outer edge of rubber cup on ceramic seat

with liquid soap solution. Use sparingly (one
drop only).

NOTE: Liquid soap solution — one drop of liquid
soap combined with one teaspoonful of water.
6. 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 10).

7. 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 11).

IMPORTANT: Do not scratch seal face.
8. Dispose of cardboard washer and recheck seal

face to be sure it is free of dirt, foreign particles,
scratches and grease.

9. Inspect shaft to be sure it is free of nicks and

scratches.

10. Apply liquid soap solution sparingly (one drop is

sufficient) to inside diameter of rubber rotating
member.

11. Slide rotating seal member (carbon face down

toward ceramic face) and spring over the shaft.

IMPORTANT: Be sure not to nick or scratch carbon
face of seal when passing it over threaded shaft
end of shaft shoulder. The carbon surface must
remain clean, or short seal life will result.
12. Hold motor shaft with flat blade screwdriver and

screw impeller onto shaft. Tightening impeller
will automatically locate seal in correct position.

13. If removed for inspection remount seal ring and

diffuser to the motor mounting ring.

14. Reassemble the pump body (Ref. No. 10) to the

motor mounting bracket.