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sub mers ible oil. Fill chamber
until
oil
covers
windings. Leave air space
in top for expansion. Use
Permatex on plug threads.
Replacing Seals and Bearings:
1. Drain all oil from motor
chamber and seal chamber
as described.
2. Remove motor hous ing as
de scribed.
3. Remove bolts that hold seal
cham ber to pump hous ing.
Use back-off screws to break
loose. With hardwood block,
tape end of impeller to loosen
from shaft. When free, remove
impeller from shaft.
4. Lift rotating assembly (rotor,
shaft and impeller) from pump
case and place hor i zon tal ly on
bench.
5. Impeller removal — Hold
motor and remove bolt and
washer from impeller end of
shaft. Impeller is threaded to
the shaft, so tap face of impeller
with hardwood block to free
threads. Holding rotor, turn
impeller with hardwood block
to free threads. Holding rotor,
turn impeller counterclockwise
as thread is right-hand.
6. Remove lower seal spring and
pry out seal with screwdriver.
7. To remove seal hous ing, take
out socket head bolts and using
bolts in back of holes, pry
plates loose. This will force
out lower seal if not already
removed.
8. Remove snap ring that holds
upper seal. Pull seal if it is free.
If not free, it can be forced off
when shaft is re moved.
9. Remove 4 bolts that hold
bearing housing in place. Set
assembly in upright po si-
tion and bump end of shaft
on hardwood block. This will
push the bearing from the
top
of
hous ing and will force upper
seal from shaft.
10. Use bearing puller to remove
bearings. Replace with new
bear ings. Press only on inner
face of bearing when replacing.
Pressing on outer face can
damage the bear ing.
IMPORTANT: Do not use
any of the old seal parts.
Replace with all new seals.
11. Thoroughly clean all castings
before replacing seals. One
grain of dirt be tween the seal
faces can cause failure.
12. Be sure seal washers are
replaced under heads of 4 bolts
that hold bearing cap in place.
Examine all O-rings for nicks
before using.
13. Be sure key is in place in
notch of shaft sleeve to pre vent
sleeve from turning.
14. Use Locktite
locking screw in end of shaft.
15. Before refilling cham ber with
oil, air test as de scribed above.
16. Refill both chambers with oil
as described above.
17. Always check all leads with
high voltage or with Megger
for grounds before operating
the pump.
Pump
Troubleshooting
Below is a list of common
prob lems and the probable causes:
Pump will not start.
1. No power to the mo tor. Check
for blown fuse or open circuit
break er.
2. Selector switch may be in the
3. Control circuit trans form er
4. Overload heater on start er may
Pump will not start and
over load heaters trip.
1. Turn off power and check
2. Check resistance of motor
3. If no grounds exist and the
Pump operates with se lec tor
switch in Hand position but will
not operate in Auto position.
on sock et head
®
1. This indicates trouble in
2. To check for defective float
Pump runs but will not shut off.
1. Pump may be air locked.
2. Lower float control may be
3. Selector switch may be in the
Off position.
fuse may be blown.
be tripped. Push to reset.
motor leads with Megger or
ohmmeter for pos si ble ground.
wind ings. All 3 phases should
show the same read ing.
motor windings check OK,
remove pump from sump and
check for clogged or blocked
impeller.
the float level control or the
alternator relay.
con trol, put selector switch in
Auto position and turn off main
power. Put a jump wire on
terminal strip. Turn on power
and if pump starts, trouble is in
float con trol. Replace control.
Turn pump off and let set for
several minutes, then restart.
hung up in the closed po si-
tion. Check in sump to be sure
control is free.
Hand position.
7
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