6
Pump
Operation
As the motors are oil filled no
lubrication or other maintenance
is required.
If a seal failure unit is used, no
attention is necessary as long
as the seal shows satisfactory
operation.
If seal failure is not used, the
pump should be lifted once every
two years and the oil be drained
from the seal chamber to check
for water.
If the pump is used on a
Hydr-O-Rail system, it should be
lifted once every six months and
checked for corrosion and wear.
Generally these pumps give
very reliable service and can be
expected to operate for years
on normal sewage pumping
without failure.
Lightning:
In some areas where considerable
lightning occurs,
it is
recommended that a lightning
arrestor be installed at the
control panel.
Complete data on lightning
arrestors and cost is available
from the factory. Lightning
arrestors are good insurance
against damage to an expensive
motor.
Servicing Instructions:
IMPORTANT: Read all the
instructions before replacing
any parts.
Starting System:
1. Turn H-O-A switch to Off
position, then turn on main
circuit breakers.
2. Open all discharge valves and
allow water to rise in sump.
3. Turn H-O-A switch to Hand
position on one pump and
notice operation. If pump is
noisy and vibrates, rotation is
wrong. To change rotation on
3ø motors, interchange any
two line leads to motor. DO
NOT INTERCHANGE MAIN
INCOMING LINES. If duplex
system, check second pump in
the same manner.
4. Now set both H-O-A switches
to Auto position and allow
water to rise in sump until one
pump starts. Allow pump to
operate until level drops to
turn-off point.
5. Allow sump level to rise to
start other pump. Notice run
lights on panel; pumps should
alternate on each successive
cycle of operation.
6. Turn both H-O-A switches
to OFF position and allow
sump to fill to the override
control level.
7. Turn both switches to Auto
position and both pumps should
start and operate together until
level drops to turn-off point.
8. Repeat this operation cycle
several times before leaving
the job.
9. Check voltage when pumps
are operating and check the
amp draw of each pump.
Check amps on each wire
as sometimes a high leg
will exist. One leg can be
somewhat higher, 5 to 10%,
without causing trouble. For
excessive amp draw on one
leg, the power company should
be consulted.
Pump
Maintenance
WARNING: Before handling
these pumps and controls,
always disconnect the power
first.
Do not smoke or use sparkable
electrical devices or flames in a
septic (gaseous) or possible
septic sump.
Field Service on Motor:
All submersible motors can
be serviced (out of warranty) in
the field by any reliable motor
service shop. Any pump (in
warranty) must be returned to the
factory for service or repaired in
an authorized Hydromatic service
center. Charges will not be
allowed if (in warranty) pump is
taken to a motor repair shop that is
not an authorized Hydromatic
service center.
When field service is performed
on a pump, these instructions
should be carefully followed.
Replacing Stator:
If motor winding is burned or
shortened, it can be rewound or
replaced with new factory wound
stator. Refer to sectional drawing
of pump and motor and use the
following steps to remove and
replace stator.
1. If stator only is damaged it
may not be necessary to
completely dismantle pump as
stator and housing can be lifted
from pump without disturbing
seals or bearings.
2. Drain all oil from upper
housing, remove from upper
housing, remove drain plug in
bottom of stator housing and
remove plug in top of housing
to allow air to enter.
3. After chamber is drained,
remove hold-down bolts
and lift off. Use care in
lifting as the seal failure
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