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Hydromatic submersible oil
in this chamber. Replace plug;
use Permatex on threads.
Install air valve in top plug
opening of motor housing and
charge housing with about
10 psi of air. Be sure air is
dry. Do not use air line where
water may be trapped in the
line. Submerge complete unit
under water and check for
leaks.
12. Refill motor chamber with oil.
Use high grade trans form er
oil or Hydromatic special
sub mers ible oil. Fill chamber
until oil covers top of
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
as de scribed.
3. Remove bolts that hold seal
cham ber to pump housing.
Use
back-off
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
horizontal 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
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
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
hous ing
face can damage the bear ing.
IMPORTANT: Do not use
any of the old seal parts.
Replace with all new seals.
screws
to
11. Thoroughly clean all castings
before replacing seals. One
grain of dirt be tween the seal
faces can cause failure.
12. Use Locktite
locking screw in end of shaft.
place
13. Before
with oil, air test as de scribed
above.
14. Refill both chambers with oil
as described above.
15. Always check all leads with
high voltage or with Megger
for grounds before operating
the pump.
threads.
on sock et head
®
refilling
cham ber
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 breaker.
2. Selector switch may be in the
Off position.
3. Control circuit trans form er
fuse may be blown.
4. Overload heater on start er
may be tripped. Push to reset.
Pump will not start and
over load heaters trip:
1. Turn off power and check
motor leads with Megger
or ohmmeter for pos si ble
ground.
2. Check resistance of motor
wind ings. All 3 phases should
show the same read ing.
3. If no grounds exist and the
motor windings check OK,
remove pump from sump
and check for clogged or
blocked impeller.
Pump operates with se lec tor
switch in Hand position but will
not operate in Auto position:
1. This indicates trouble in
the float level control or the
alternator relay.
2. To check for defective float
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.
7
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