GORMAN-RUPP PUMPS SE Series Application guide

OM-06497-01
August 15, 2011
Rev. A 01‐14‐13
THE GORMAN‐RUPP COMPANY DMANSFIELD, OHIO
GORMAN‐RUPP OF CANADA LIMITED DST. THOMAS, ONTARIO, CANADA Printed in U.S.A.
www.grpumps.com
E2011 The Gorman‐Rupp Company
INSTALLATION, OPERATION,
AND MAINTENANCE MANUAL
WITH PARTS LIST
SE SERIES PUMPS
MODELS
SE2G54-E.5 115/1
SE2H54-E1 115/1

Register your new
Gorman‐Rupp pump online at
www.grpumps.com
Valid serial number and e‐mail address required.
RECORD YOUR PUMP MODEL AND SERIAL NUMBER
Please record your pump model and serial number in the
spaces provided below. Your Gorman‐Rupp distributor
needs this information when you require parts or service.
Pump Model:
Serial Number:

TABLE OF CONTENTS
i
INTRODUCTION PAGE I - 1.................................................
SAFETY ‐ SECTION A PAGE A - 1............................................
INSTALLATION - SECTION B PAGE B - 1....................................
PREINSTALLATION INSPECTION PAGE B - 1............................................
Lubrication PAGE B - 1............................................................
PUMP INSTALLATION PAGE B - 1......................................................
Pump Dimensions PAGE B - 1.....................................................
Motor Specifications PAGE B - 2....................................................
Lifting PAGE B - 2.................................................................
Positioning the Pump PAGE B - 3...................................................
Correct Pump Installations PAGE B - 3..............................................
PIPING PAGE B - 4...................................................................
OPERATION - SECTION C PAGE C - 1......................................
PUMP OPERATION PAGE C - 1........................................................
Manual Operation PAGE C - 1......................................................
Automatic Operation PAGE C - 1...................................................
Operational Checks PAGE C - 2....................................................
STOPPING PAGE C - 2................................................................
Storage and Cold Weather Preservation PAGE C - 2..................................
TROUBLESHOOTING - SECTION D PAGE D - 1..............................
PUMP MAINTENANCE AND REPAIR ‐ SECTION E PAGE E - 1.................
PERFORMANCE CURVE PAGE E - 1...................................................
PARTS LISTS:
S2G54-E.5 115/1 Pump Model PAGE E - 3..........................................
S2H54-E1 115/1 Pump Model PAGE E - 5..........................................
PUMP MAINTENANCE AND REPAIR PAGE E - 6.........................................
PUMP END DISASSEMBLY - S2G54-E.5 115/1 PAGE E - 6..............................
Strainer Removal PAGE E - 6.......................................................
Impeller Removal PAGE E - 6......................................................
Seal Removal PAGE E - 7..........................................................
PUMP END REASSEMBLY - S2G54-E.5 115/1 PAGE E - 7...............................
Cleaning And Inspection Of Pump Parts PAGE E - 7..................................
Seal Installation PAGE E - 8........................................................
Impeller Installation PAGE E - 9.....................................................
Strainer Installation PAGE E - 9.....................................................
PUMP POWER CABLE REPLACEMENT - S2G54-E.5 115/1 PAGE E - 9...................
Power Cable Removal PAGE E - 9..................................................
Power Cable Installation PAGE E - 9................................................
PUMP END DISASSEMBLY - S2H54-E1 115/1 PAGE E - 10...............................
Strainer Removal PAGE E - 10.......................................................
Impeller Removal PAGE E - 10......................................................

TABLE OF CONTENTS
(continued)
ii
Seal Removal PAGE E - 10..........................................................
PUMP END REASSEMBLY - S2H54-E1 115/1 PAGE E - 10...............................
Cleaning And Inspection Of Pump Parts PAGE E - 10..................................
Seal Installation PAGE E - 11........................................................
Impeller Installation PAGE E - 12.....................................................
Strainer Installation PAGE E - 12.....................................................
PUMP POWER CABLE REPLACEMENT - S2G54-E.5 115/1 PAGE E - 12...................
Power Cable Removal PAGE E - 12..................................................
Power Cable Installation PAGE E - 12................................................
LUBRICATION SPECIFICATIONS PAGE E - 12............................................

SE SERIES OM-06497
PAGE I - 1INTRODUCTION
INTRODUCTION
Thank You for purchasing a Gorman‐Rupp pump.
Read this manual carefully to learn how to safely
install and operate your pump. Failure to do so
could result in personal injury or damage to the
pump.
These pumps are SE Series submersible models.
The basic material of construction is stainless
steel, with stainless steel impeller. They are de
signed to handle most non‐volatile, non‐flammable
liquids, industrial chemical and low pH resistance
materials which are mildly corrosive and abrasive
that do not contain large entrained solids. Do not
attempt to pump volatile or flammable liquids that
may damage the pump.
The pumps are powered by integral, thermally‐pro
tected electric motors which are not explosion‐
proof. The pumps may be operated fully or partially
submerged. Do not operate the pumps in hazard
ous atmospheres.
All repairs to the pump motors must be performed
by a Gorman‐Rupp authorized submersible repair
facility or the factory. Any repairs to the motor as
semblies performed by the customer or an unau
thorized repair facility negates the warranty.
Because pump installations are seldom identical,
this manual cannot possibly provide detailed in
structions and precautions for every aspect of
each specific application. Therefore, it is the re
sponsibility of the owner/installer of the pump to
ensure that applications not addressed in this
manual are performed only after establishing that
neither operator safety nor pump integrity are com
promised by the installation. Pumps and related
equipment must be installed and operated ac
cording to all national, local and industry stan
dards.
If there are any questions regarding the pump or
its application which are not covered in this man
ual or in other literature accompanying this unit,
please contact your Gorman‐Rupp distributor, or
The Gorman‐Rupp Company:
The Gorman‐Rupp Company
P.O. Box 1217
Mansfield, Ohio 44901-1217
Phone: [phone]
or:
Gorman‐Rupp of Canada Limited
70 Burwell Road
St. Thomas, Ontario N5P 3R7
Phone: [phone]
The following are used to alert maintenance per
sonnel to procedures which require special atten
tion, to those which could damage equipment, and
to those which could be dangerous to personnel:
Immediate hazards which WILL result in
severe personal injury or death. These
instructions describe the procedure re
quired and the injury which will result
from failure to follow the procedure.
Hazards or unsafe practices which
COULD result in severe personal injury
or death. These instructions describe
the procedure required and the injury
which could result from failure to follow
the procedure.
Hazards or unsafe practices which COULD
result in minor personal injury or product
or property damage. These instructions
describe the requirements and the possi
ble damage which could result from failure
to follow the procedure.
NOTE
Instructions to aid in installation, operation, and
maintenance or which clarify a procedure.

SE SERIES OM-06497
PAGE A - 1SAFETY
SAFETY ‐ SECTION A
This information applies to SE Series
submersible electric motor driven
pumps.
Because pump installations are seldom
identical, this manual cannot possibly
provide detailed instructions and pre
cautions for each specific application.
Therefore, it is the owner/installer's re
sponsibility to ensure that applications
not addressed in this manual are per
formed only after establishing that nei
ther operator safety nor pump integrity
are compromised by the installation.
Do not operate this pump where explo
sive vapors or flammable material exist.
Death or serious injury will result.
Before attempting to open or service the
pump:
1. Familiarize yourself with this man
ual.
2. Unplug the pump power cable to
ensure that the pump will remain
inoperative.
3. Allow the pump to completely cool
if overheated.
This pump is designed to handle most
non‐volatile, non‐flammable liquids, in
dustrial chemical and low pH resistance
materials which are mildly corrosive
and abrasive and do not contain large
entrained solids. It is not designed to
pump volatile or flammable materials.
Do not attempt to pump any liquids
which may damage the pump or endan
ger personnel as a result of pump fail
ure.
Never attempt to alter the length or re
pair any power cable with a splice. The
pump motor and cable must be com
pletely waterproof. Damage to the pump
or personal injury may result from alter
ations.
After the pump has been installed, make
certain that the pump and all piping or
hose connections are secure before op
eration.
Do not attempt to lift the pump by the
power cable, piping or the carry handle.
Attach proper lifting equipment to the
lifting handle fitted to the pump.
Obtain the services of a qualified elec
trician to troubleshoot, test and/or ser
vice the electrical components of this
pump.
Pumps and related equipment must be in
stalled and operated according to all na
tional, local and industry standards.

OM-06497SE SERIES
PAGE B - 1INSTALLATION
INSTALLATION - SECTION B
Review all SAFETY information in Section A.
Do not operate this pump where explo
sive vapors or flammable material exist.
Death or serious injury will result.
This section only summarizes recommended in
stallation practices for the pump. If there are ques
tions concerning your specific application, contact
your local distributor or the Gorman‐Rupp Com
pany.
Pumps and related equipment must be in
stalled and operated according to all na
tional, local and industry standards.
PREINSTALLATION INSPECTION
Before installation, inspect the pump for damage
which may have occurred during shipment. Check
as follows:
a. Inspect the pump assembly for cracks, dents,
damaged threads, and other obvious dam
age.
b. Check for and tighten loose attaching hard
ware.
c. The pump is furnished with a 30‐foot (9 meter)
long power cable. Inspect the cable for cuts or
damage.
d. Carefully read all tags, decals, and markings
on the pump assembly, and perform all duties
as indicated.
If anything appears to be abnormal, contact your
Gorman‐Rupp distributor or the factory to deter
mine the repair or updating policy. Do not put the
pump into service until appropriate action has
been taken.
Lubrication
The shaft seal and bearings in this pump are fully
lubricated from the factory. No additional lubrica
tion is required.
PUMP INSTALLATION
Pump Dimensions
The pumps are provided with suction strainers to
prevent large solids from clogging the impeller.
See Figure 1 for the approximate physical dimen
sions of the pumps.

OM-06497 SE SERIES
PAGE B - 2 INSTALLATION
OUTLINE DRAWING
MODEL SE2G MODEL SE2H
Figure 1. Pump Models SE2G54-E.5 115/1 and SE2H54-E1 115/1
Motor Specifications
H.P. Hz. RPM Amps
0.5 60 3400 7.6
1.0 60 3400 14
Lifting
Pump unit weights will vary depending on the
mounting and drive provided. Check the shipping
tag on the unit packaging for the actual weight, and
use lifting equipment with appropriate capacity.
Drain the pump and remove all customer‐installed
equipment such as suction and discharge hoses
or piping before attempting to lift existing, installed
units.
Attach a rope or chain to the lifting handle on the
top of the pump. Do not lift the unit by the power
cable or the discharge piping. Customer installed
equipment such as rigid discharge piping must be
removed before attempting to lift.
Figure 2. Do Not Lift Pump by Power Cable
Do not attempt to lift the pump by the
power cable or piping. Attach proper
lifting equipment to the handle on the
pump.

OM-06497SE SERIES
PAGE B - 3INSTALLATION
Positioning the Pump
This pump is designed to operate fully or partially
submerged; however, it should not be operated
dry for extended periods of time.
Extended dry operation will destroy the
seal assembly.
Never place the pump on loose or soft ground; the
pump could sink, preventing water from reaching
the impeller (see Figure 3).
Figure 3. Do Not Place Pump
on Loose Ground
Secure and support the pump by the handle on
the pump. If the bottom is heavily sludge‐covered,
rest the pump on support blocks or suspend it near
the surface of the liquid. If the application involves a
lot of debris, protect the pump from excessive wear
and clogging by suspending it in a perforated bar
rel or culvert pipe. See Figure 4 for correct pump
installations.
The pump is provided with a suction strainer to pre
vent large solids from clogging the impeller. Any
spherical solids which pass through the strainer
will pass through the pump.
SUSPEND BY HANDLE IN PERFORATED CULVERT PIPE ON SUPPORTS
Figure 4. Correct Pump Installations

OM-06497 SE SERIES
PAGE B - 4 INSTALLATION
PIPING
The pump volute is equipped with a standard
2-inch NPT tapped discharge connection. Either
hose or rigid pipe may be used for the discharge
connection.
For maximum pumping capacity, use non‐collaps
ible hose or rigid piping, and keep the discharge as
short and straight as possible. If rigid piping is
used, minimize the use of elbows and fittings which
increase friction losses and reduce pump perform
ance.
A check valve or throttling valve may be installed in
the discharge line to control siphoning or back flow
when the pump is shut off.

SE SERIES OM-06497
OPERATION PAGE C - 1
OPERATION - SECTION C
Review all SAFETY information in Section A.
Follow the instructions on all tags, labels and
decals attached to the pump.
PUMP OPERATION
Do not operate this pump where explo
sive vapors or flammable material exist.
Death or serious injury will result.
This pump is designed to handle dirty
water that does not contain large en
trained solids. It is not designed to
pump volatile, flammable or corrosive
materials. Do not attempt to pump any
liquids which may damage the pump or
endanger personnel as a result of pump
failure.
Install the pump and piping as described in IN
STALLATION, Section B.
Manual Operation
Each pump is provided with a 30‐foot (3 m) power
cable. Never splice the power cable due to safety
and warranty considerations.
Never attempt to alter the length or re
pair any power cable with a splice. The
pump motor and cable must be com
pletely waterproof. Damage to the pump
or personal injury may result from alter
ations.
Always keep the plug end dry.
Figure 1. Always Keep Plug End Dry
For manual operation, simply plug the power cable
into any 115 volt grounded receptacle. It is strong
ly recommended that a Ground Fault Interrupter
(GFI) type receptacle (or equivalent) be used (see
Figure 2).
Always use a three‐prong grounded re
ceptacle. It is strongly recommended
that a Ground Fault Interrupter (GFI)
type receptacle (or equivalent) be used.
Figure 2. Always Use a Grounded Receptacle
Automatic Operation
A float switch assembly is available as an option
from the factory to provide for automatic operation.
Observe the following instructions for automatic
operation.
1. Attach the plastic tie on the float switch power
cable to the standpipe in the sump at the ap
proximate desired liquid level. Do not allow

SE SERIES
OM-06497
OPERATIONPAGE C - 2
the liquid level to drop below the bottom of the
pump motor cover to ensure cooling of the
pump motor.
2. The tie is positioned on the cable approxi
mately 6 inches (152 mm) below the float. This
setting allows approximately 9 inches (229
mm) of liquid rise between pump start/stop.
The start/stop interval may be increased by
loosening the nut on the plastic tie swivel and
extending the float end of the power cable.
The liquid level in the sump will increase ap
proximately 8 inches (203 mm) between start/
stop intervals for every 6 inches (152 mm) of
cable increase.
3. Plug the pump power cable into the female
end of the float cable plug.
4. Plug the float cable into a grounded recep
tacle. It is strongly recommended that a
Ground Fault Interrupter (GFI) type recep
tacle (or equivalent) be used (see Figure 2).
Operational Checks
Check the pump for proper operation when it is first
started and periodically thereafter to identify minor
problems.
Check the pump for unusual noises or excessive
vibration while it is operating. If noise or vibration is
excessive, stop the pump and refer to the
troubleshooting chart for possible causes.
Check the pump strainer screen for clogging
caused by stones, sticks, or other debris. Clean
the strainer screen when required. In some cases,
stopping the pump momentarily may back flush
the strainer screen, purging most of the debris
from it. If this fails to clean the screen, unplug the
pump , remove it from the sump, and remove the
debris manually (see MAINTENANCE AND RE
PAIR in Section E).
Never introduce air or steam pressure into the
pump casing or piping to remove a blockage. This
could result in personal injury or damage to the
equipment. If backflushing is absolutely neces
sary, liquid pressure must be limited to 50% of the
maximum permissible operating pressure shown
on the pump performance curve (see MAINTE
NANCE AND REPAIR, Section E).
STOPPING
To stop the pump when in manual mode, simply
unplug it from the receptacle. After stopping the
pump, be sure to perform all required maintenance
and preservation procedures.
This pump is equipped with automatic
thermal overload protection which will stop
the pump if overheating occurs. Unplug
the pump and allow it to cool before at
tempting to service the pump.
When operated in the automatic mode, the pump
will stop and start as the iquid level rises and falls.
For service or extended stopping, unplug both the
pump and float switch from the receptacle.
Storage and Cold Weather Preservation
After stopping the pump, use the rope or chain at
tached to the lifting handle on the pump to remove
the pump from the sump. Do not lift the unit by the
power cable or the discharge piping. Customer in
stalled equipment such as rigid discharge piping
must be removed before attempting to lift.
Do not attempt to lift the pump by the
power cable or piping. Attach proper
lifting equipment to the handle on the
pump.
Clean the strainer screen before storage. If the
application involves a lot of mud or sludge, remove
the strainer and clean the impeller before storage.
NOTE
The most common cause of failure to run is hard
ened mud or sludge in the impeller.
In freezing temperatures, the pump will not freeze
as long as it is submerged in liquid. If the pump
casing is not submerged, or if the liquid begins to
freeze, remove the pump from the sump and allow

SE SERIES OM-06497
OPERATION PAGE C - 3
it to dry thoroughly. Run the pump for two or three
minutes to dry the inner walls.
If the pump freezes, move it into a warm area until
completely thawed, or submerge it into the liquid. If
the liquid is near freezing, the pump must be sub
merged for an extended period of time. Start the
pump and check for shaft rotation. If still frozen, al
low additional thawing time before attempting to
restart.
Do not attempt to thaw the pump by using
a torch or other source of flame. This could
damage gaskets, electrical components,
or motor windings.

TROUBLE POSSIBLE CAUSE PROBABLE REMEDY
PUMP WILL NOT
RUN (MANUAL
MODE)
MOTOR RUNS,
BUT PUMP FAILS
TO DELIVER
RATED DIS
CHARGE
PUMP WILL NOT
RUN (AUTOMATIC
MODE)
PUMP RUNS WITH
EXCESSIVE NOISE
OR VIBRATION
SE SERIES OM-06497
TROUBLESHOOTING PAGE D - 1
TROUBLESHOOTING - SECTION D
Review all SAFETY information in Section A.
Hardened mud or sludge in impeller. Remove strainer, check and clean.
Damaged power cable. Inspect and replace as required.
Strainer clogged. Check and clean as required.
Impeller binding. Check freedom of rotation. Add shims
or gaskets as required.
Liquid level device(s) fouled with mud Clean liquid level device(s).
or foreign material.
Float type sensing device(s) tangled or Check installation for free movement
obstructed. of float.
Defective liquid level device(s). Replace device.
Discharge line clogged or restricted; Check discharge lines; straighten
hose kinked. hose.
Liquid being pumped too thick. Dilute liquid by heating if possible.
Worn impeller vanes. Check impeller.
Pumping entrained air. Check liquid level in sump; check
position of pump.
Damaged or unbalanced impeller. Replace impeller.
Pumping entrained air. Check liquid level in sump; check
position of pump.
Damaged impeller. Inspect and replace impeller.

SE SERIES OM-06497
MAINTENANCE & REPAIR PAGE E - 1
PUMP MAINTENANCE AND REPAIR ‐ SECTION E
MAINTENANCE AND REPAIR OF THE WEARING PARTS OF THE PUMP WILL MAINTAIN PEAK
OPERATING PERFORMANCE.
STANDARD PERFORMANCE FOR PUMP MODELS SE2G54-E.5 115/1 AND SE2H54-E1 115/1
Based on 70_F (21_C) clear water at sea level.
Since pump installations are seldom identical, your
performance may be different due to such factors
as viscosity, specific gravity, elevation and tem
perature.

OM-06497 SE SERIES
MAINTENANCE & REPAIRPAGE E - 2
SECTION DRAWING
PARTS PAGE
Figure 1. Pump Model SE2G54-E.5 115/1

ITEM
NO.
PART NAME PART
NUMBER
MAT'L
CODE
QTY ITEM
NO.
PART NAME PART
NUMBER
MAT'L
CODE
QTY
SE SERIES OM-06497
MAINTENANCE & REPAIR PAGE E - 3
PARTS LIST
Pump Model SE2G54-E.5 115/1
(From S/N 1483930 Up)
If your pump serial number is followed by an “N”, your pump is NOT a standard production model. Contact
the Gorman‐Rupp Company to verify part numbers.
1 PUMP CASING 26816-301 --- 1
2 IMPELLER 26816-351 --- 1
3MECH SEAL KIT 26816-352 --- 1
4 OIL CHAMBER 26816-319 --- 1
5 UPPER BALL BEARING 26816-354 --- 1
6O‐RING KIT W/GASKET 26816-316 --- 1
7 STATOR W/CASING 26816-304 --- 1
8 ROTOR W/SHAFT 26816-305 --- 1
9 HEX HD CAPSCREW 26816-331 --- 4
10 LOWER BALL BEARING 26816-008 --- 1
11 GOV SWITCH W/PLATE 26816-009 --- 1
12 PAN HD MACH SCREW 26816-025 --- 2
13 UPPER MOTOR COVER 26816-311 --- 1
14 PAN HD MACH SCREW 26816-028 --- 1
15 SWITCH COVER 26816-012 --- 1
16 PAN HD MACH SCREW 26816-023 --- 2
17 POWER CABLE W/GLAND 26816-356 --- 1
18 PAN HD MACHINE SCREW26816-448 --- 2
19 HANDLE 26816-447 --- 1
20 WIRE NUT 27284-011 --- 2
21 CAPACITOR 26816-013 --- 1
22 PAN HD MACH SCREW 26816-027 --- 1
23 CORD CLAMP 26816-020 --- 1
24 PAN HD MACH SCREW 26816-024 --- 1
25 PUMP TOP COVER 26816-314 --- 1
26 WARNING DECAL 38817-082 --- 1
27 SHAFT SLEEVE 26816-355 --- 1
28 PIPE NIPPLE 26816-322 --- 1
29 PAN HD MACH SCREW 26816-448 --- 3
30 OIL CHAMBER COVER 26816-306 --- 1
31 STRAINER 26816-317 --- 1
32 PAN HD MACH SCREW 26816-027 --- 1
32A PAN HD MACH SCREW 26816-027 --- 1
33 OIL SEAL 26816-353 --- 1
34 PAN HD MACH SCREW 36816-028 --- 3
35 PAN HD MACH SCREW 26816-448 --- 3
NOT SHOWN:
NAME PLATE 38818-134 --- 1
GORMAN‐RUPP DECAL GR-03 --- 1
GRD WIRE W/TERMINAL 26816-450 --- 1
OPTIONAL:
FLOAT SWITCH 27471-191 --- 1
QT HYDRAULIC OIL 9568 --- 1
INDICATES PARTS RECOMMENDED FOR STOCK

OM-06497 SE SERIES
MAINTENANCE & REPAIRPAGE E - 4
SECTION DRAWING
Figure 2. Pump Model SE2H54-E1 115/1

ITEM
NO.
PART NAME PART
NUMBER
MAT'L
CODE
QTY ITEM
NO.
PART NAME PART
NUMBER
MAT'L
CODE
QTY
SE SERIES OM-06497
MAINTENANCE & REPAIR PAGE E - 5
PARTS LIST
Pump Model SE2H54-E1 115/1
(From S/N 1483930 Up)
If your pump serial number is followed by an “N”, your pump is NOT a standard production model. Contact
the Gorman‐Rupp Company to verify part numbers.
1 PUMP CASING 26816-441 --- 1
2 IMPELLER 26816-402 --- 1
3MECH SEAL KIT 26816-442 --- 1
4 LOWER BALL BEARING 26816-208 --- 1
5O‐RING KIT W/GASKET 26816-445 --- 1
6 STATOR W/CASING 26816-404 --- 1
7 ROTOR W/SHAFT 26816-405 --- 1
8 HEX HD CAPSCREW 26816-431 --- 4
9 GOV SWITCH & PLATE 26816-209 --- 1
10 UPPER BALL BEARING 26816-210 --- 1
11 OVERLOAD PROTECTOR 26816-212 --- 1
12 PAN HD MACH SCREW 26816-449 --- 2
13 PUMP TOP COVER 26816-443 --- 1
14 PAN HD MACH SCREW 26816-023 --- 1
15 WIRE NUT 27284-011 --- 2
16 PAN HD MACH SCREW 26816-448 --- 2
17 LOCKWASHER 26816-037 --- 1
18 POWER CABLE W/GLAND 26816-444 --- 1
19 HANDLE 26816-447 --- 1
20 CAPACITOR 26816-213 --- 1
21 PAN HD MACH SCREW 26816-027 --- 1
22 CORD CLAMP 26816-020 --- 1
23 PAN HD MACH SCREW 26816-024 --- 1
24 UPPER MOTOR COVER 26816-211 --- 1
25 WARNING DECAL 38817-082 --- 1
26 PIPE NIPPLE 26816-322 --- 1
27 HEX HD CAPSCREW 26816-030 --- 3
28 OIL CHAMBER COVER 26816-406 --- 1
29 OIL SEAL 26816-407 --- 1
30 SUCTION COVER 26816-446 --- 1
31 STRAINER 26816-453 --- 1
32 PAN HD MACH SCREW 26816-448 --- 3
33 PAN HD MACH SCREW 26816-027 --- 1
34 PAN HD MACH SCREW 26816-434 --- 3
35 DISCHARGE FLANGE 26816-452 --- 1
36 DISCH FLANGE O‐RING 26816-451 --- 1
NOT SHOWN:
NAME PLATE 38818-134 --- 1
GORMAN‐RUPP DECAL GR-03 --- 1
GRD WIRE W/TERMINAL 26816-450 --- 1
PAN HD MACH SCREW 26816-025 --- 2
FLAT WASHER 26816-033 --- 2
OPTIONAL:
FLOAT SWITCH 27471-191 --- 1
QT HYDRAULIC OIL 9568 --- 1
INDICATES PARTS RECOMMENDED FOR STOCK

OM-06497 SE SERIES
MAINTENANCE & REPAIRPAGE E - 6
PUMP MAINTENANCE AND REPAIR
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 provided separately for each individual pump
model, and are keyed to the Pump Model views
(see Figures 1 and 2) and the accompanying parts
lists.
Before attempting to service the pump, unplug the
pump power cable to ensure that the pump will re
main inoperative.
Before attempting to open or service the
pump:
1. Familiarize yourself with this man
ual.
2. Unplug the pump power cable to
ensure that the pump will remain
inoperative.
3. Allow the pump to completely cool
if overheated.
Use a rope or chain attached to the handle on the
pump to remove the pump from the sump and
move it to a suitable location for service. It is not
necessary to disconnect a flexible discharge hose
before removing the pump. If rigid discharge pip
ing is used, disconnect the piping before attempt
ing to move the pump.
Do not attempt to lift the pump by the
power cable or piping. Attach proper
lifting equipment to the handle on the
pump.
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.
Obtain the services of a qualified elec
trician to service the electrical compo
nents of this pump.
Check the chart in TROUBLESHOOTING, Section
D, to determine the nature of the pump problem. If
the problem is mechanical in nature, such as worn
pump parts, seal replacement, etc., refer to the ap
propriate PUMP END DISASSEMBLY procedures
for your specific pump.
Complete disassembly procedures for the pump
motor are not included in this manual. Instructions
are provided only for replacement of the pump
power cable. If the pump fails to run and motor
problems are suspected, contact your Gorman‐
Rupp distributor or the factory for motor service.
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 avail
able as a kit shown on the parts lists.
PUMP END DISASSEMBLY
MODEL SE2G54-E.5 115/1
(FIGURE 1)
Strainer Removal
To remove the strainer (31), lay the pump on its
side, disengage the machine screws (35) and re
move the strainer. If the impeller is clogged, the de
bris can usually be removed without further disas
sembly.
Impeller Removal
Remove the machine screws (29) and separate the
pump housing (1) and pump housing O‐ring.
To immobilize the shaft, insert a large flat‐blade
screwdriver into the slot in the end of the shaft.
Strike the impeller (2) in a counterclockwise direc
tion with a soft‐faced mallet or wood block and
hammer. When the impeller breaks loose, remove