S SERIES PUMPS
OM-07264
MAINTENANCE AND REPAIR
PAGE E - 6
PUMP END DISASSEMBLY
Review all SAFETY information in Section A.
Follow the instructions on all tags, label and de
cals attached to the pump.
The following maintenance and repair instructions
are keyed to the illustrations (Figures 1and 2), and
the accompanying parts lists. Refer to the Parts List
manual for the part number and quantity required.
Before attempting to service the pump or control,
terminate the power supply to the control box.
Close the discharge throttling valve, if so
equipped.
The electrical power used to operate
this pump is high enough to cause inju
ry or death. Make certain that the control
handle
on the control box is in the off po
sition and locked out, or that the power
supply to the control box has been
otherwise cut off and locked out, before
attempting to open or service the pump
assembly. Tag electrical circuits to pre
vent accidental start‐up.
Use the hoisting bail to remove the pump from the
wet well or sump, and move it to a location where
the discharge line can be removed. It is not neces
sary to disconnect a flexible discharge hose before
removing the pump. If rigid discharge piping is
used, disconnect the piping before attempting to
move the pump.
Do not attempt to lift the pump by the
motor power cable or the piping. Attach
proper lifting equipment to the lifting
device fitted to the pump. If chains or
cable are wrapped around the pump to
lift it, make certain that they are posi
tioned so as not to damage the pump,
and so that the load will be balanced.
Select a suitable location, preferably indoors, to
perform the degree of maintenance required. If the
motor housing is to be opened, the work must be
done in a clean, well‐equipped shop. All mainte
nance functions must be done by qualified person
nel.
Check the chart in
TROUBLESHOOTING
, Section
B of this manual, to determine the nature of the
pump problem. If the problem is mechanical in na
ture, such as worn pump parts, seal replacement,
lubrication, etc., refer to
PUMP END DISASSEM
BLY
for instructions.
If the problem is electrical, complete disassembly
may not be required. Refer to
Electrical Testing
in
TROUBLESHOOTING
, Section B, and have a
qualified electrician check the control box, cable
and terminal housing. If the problem is determined
to be in the motor, proceed with
PUMP END DIS
ASSEMBLY,
followed by
MOTOR DISASSEMBLY
.
Otherwise, see
Terminal Housing And Power Ca
ble Disassembly
.
Carefully inspect any O‐rings or gaskets before re
moval and cleaning to determine if a proper seal
and compression existed prior to disassembly. If
sealing was faulty or questionable, the cause must
be determined and corrected before reassembly.
All gaskets and most O‐rings
must
be replaced if
disturbed. Repair gaskets and O‐rings are listed in
the Parts List manual.
Use
Only Genuine Gorman-Rupp
re
placement parts. Failure to do so may cre
ate a hazard and damage the pump or di
minish optimal pump performance. Any
such hazard, damage or diminished per
formance is not covered by the warranty.
