Hydromatic S12L Series, Инструкция по установке и обслуживанию, Страница: 5 / 16

5
lights on panel. Pumps should
alternate on each successive
cycle of op er a tion.
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 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.
expected to operate for many
years on normal sewage pumping
without failure.
Servicing Instructions:
IMPORTANT — Read all
in struc tions before replacing
any parts.
WARNING: Before handling
these pumps and controls,
always dis con nect the power
first.
Do not smoke or use sparkable
electrical devices or flames in
a sep tic (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
shorted, 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
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 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
Pump
Maintenance
lifted from pump without
disturbing seals or bearings.
2. Drain all oil 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
connecting wire must be
dis con nect ed before housing
is com plete ly removed. See
sectional drawing.
4. Set assembly on bench and
remove connection box. When
box is lifted off, connection
wires to motor will be
exposed. These wires will
probably be burned, but each
wire is tagged with a metal
marker giving wire number.
Cut the wires.
If the leads to the connection
box are burned, a complete
new con nec tion box with new
wire must be used. The wires
are potted in with sealing
compound and a new unit
must be obtained from the
factory. The old con nec tion
box can be returned to the
factory for partial credit.
5. The stator is held in the
housing with a bolted-in
retaining ring and prevented
from rotating by a key.
6. Remove the retaining ring and
socket head cap screw.
7. After ring is removed, turn
housing upright and bump on
hard wood blocks. This should
jar the stator loose and allow it
to drop out.
8. Thoroughly clean housing
before replacing new stator.
Replace stator and make all
wire con nec tions to the
connection
box before
replacing housing on pump.