Gorman-Rupp Pumps SFV4A-X User Manual

PUBLICATION NUMBER
OM-06628-01
April 2, 2013
Rev. B 01‐13‐14

SFV SERIES

EXPLOSION‐PROOF PUMPS

THE GORMAN‐RUPP COMPANY D MANSFIELD, OHIO

www.grpumps.com

GORMAN‐RUPP OF CANADA LIMITED D ST. THOMAS, ONTARIO, CANADA Printed in U.S.A.

e2013 The Gorman‐Rupp Company

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

INTRODUCTION PAGE I - 1.................................................

SAFETY ‐ SECTION A PAGE A - 1............................................

INSTALLATION - SECTION B PAGE B - 1....................................

GENERAL INFORMATION PAGE B - 1..................................................

PREINSTALLATION INSPECTION PAGE B - 1............................................

LUBRICATION PAGE B - 1.............................................................

PUMP MOTOR SPECIFICATIONS PAGE B - 1............................................

PUMP INSTALLATION PAGE B - 3......................................................

Lifting PAGE B - 3.................................................................

Impeller Rotation PAGE B - 3.......................................................

Positioning the Pump (Guide Rail Application) PAGE B - 3.............................

Positioning the Pump (Stand Application) PAGE B - 4.................................

Piping PAGE B - 4................................................................

ELECTRICAL CONNECTIONS PAGE B - 4...............................................

Field Wiring Connections (Incoming Power) PAGE B - 4...............................

Dual Voltage PAGE B - 5...........................................................

Motor Cable Grounding Test PAGE B - 5.............................................

Control Box Connections PAGE B - 5...............................................

Liquid Level Devices PAGE B - 6....................................................

OPERATION - SECTION C PAGE C - 1......................................

GENERAL INFORMATION PAGE C - 1..................................................

Pump Performance PAGE C - 1.....................................................

Control Box PAGE C - 1...........................................................

PUMP OPERATION PAGE C - 1........................................................

Liquid Temperature And Overheating PAGE C - 1.....................................

STARTING, STOPPING AND OPERATIONAL CHECKS PAGE C - 2.........................

Starting PAGE C - 2...............................................................

Stopping PAGE C - 2..............................................................

Operational Checks PAGE C - 2....................................................

COLD WEATHER PRESERVATION PAGE C - 3...........................................

LUBRICATION PAGE C - 3.............................................................

Draining Oil PAGE C - 3...........................................................

Condition of Oil PAGE C - 3........................................................

Adding Oil PAGE C - 3............................................................

TROUBLESHOOTING - SECTION D PAGE D - 1..............................

ELECTRICAL TESTING PAGE D - 3.....................................................

Test Equipment PAGE D - 3........................................................

Voltage Imbalance PAGE D - 3.....................................................

Motor and Power Cable Continuity PAGE D - 3.......................................

Insulation Resistance PAGE D - 4...................................................

i

TABLE OF CONTENTS

(continued)

PUMP MAINTENANCE AND REPAIR ‐ SECTION E PAGE E - 1.................

GENERAL INFORMATION PAGE E - 1..................................................

Lifting PAGE E - 1.................................................................

Pump Serial Numbers PAGE E - 1..................................................

PARTS LISTS:

Pump Model SFV3A-X PAGE E - 3.................................................

Pump Model SFV3B-X PAGE E - 5.................................................

Pump Model SFV4A-X PAGE E - 7.................................................

Pump Model SFV4B-X PAGE E - 9.................................................

Pump Model SFV4C-X PAGE E - 11.................................................

Pump Model SFV4D-X PAGE E - 13.................................................

PUMP END DISASSEMBLY AND REASSEMBLY PAGE E - 14...............................

PUMP END DISASSEMBLY PAGE E - 14.................................................

Preparing Pump for Disassembly PAGE E - 14........................................

Pump Casing Removal PAGE E - 15.................................................

Draining Oil From Seal Cavity PAGE E - 15............................................

Impeller Removal PAGE E - 15......................................................

Seal Removal (No Shaft Sleeve) PAGE E - 15.........................................

Seal Removal (With Shaft Sleeve) PAGE E - 16........................................

PUMP END REASSEMBLY PAGE E - 16..................................................

Hardware Torque Values PAGE E - 16................................................

Cleaning and Inspection of Pump Parts PAGE E - 16...................................

Seal Installation (With Shaft Sleeve) PAGE E - 17......................................

Seal Installation (No Shaft Sleeve) PAGE E - 18........................................

Impeller Installation PAGE E - 19.....................................................

Pump Casing Installation PAGE E - 19................................................

Final Assembly PAGE E - 19........................................................

LUBRICATION PAGE E - 19.............................................................

Seal Cavity PAGE E - 19............................................................

ii

OM-06628 SFV SERIES X‐PROOF PUMPS

INTRODUCTION

Thank You for purchasing a Gorman‐Rupp SFV

Series explosion‐proof 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.

This manual contains essential information on in
stalling and operating the pump, and on making
electrical connections. However, since pump in
stallations are seldom identical, some of the infor
mation only summarizes general recommenda
tions and practices required to inspect, position,
and arrange the pump and piping.

This manual provides troubleshooting and mainte
nance instructions required to properly diagnose
operational problems, and to service the pump hy
draulic components only. Pump motor mainte
nance may be performed only by a Gorman‐Rupp
authorized repair facility, or the factory. Otherwise,
the pump warranty will be negated, and damage
to the pump, and injury or death to personnel can
result. Contact the factory for the authorized repair
facility closest to you.

The motor powering this pump is approved by
either CSA and/or FM for Class 1, Division 1,
Groups C and D environments. Refer to the name
plate on your pump for agency approval informa

tion. All repairs to the pump, other than seal, impel
ler and other hydraulic components, must be per
formed by a Gorman‐Rupp authorized repair facil
ity or the factory. Any repairs to the motor assembly
performed by the customer or an unauthorized re
pair facility negates the agency approval and the
motor warranty, and damage to the pump, and in
jury or death to personnel can result. If the motor
is dual‐voltage, the pump is shipped from the fac
tory wired only for the voltage shown on the name
plate. If desired to have the voltage changed, re
turn the pump to the factory or to a Gorman‐Rupp
authorized repair facility.

The pump motor must be operated through an ap
propriate control box matching the voltage and
other characteristics of the motor. The control box
must provide for proper operation of the motor pro
tection devices, such as the integral moisture and
thermal switches. Control boxes and other control
devices not integral to the pump are not covered
in this manual.

Pump construction is cast iron, with stainless steel
shaft and hardware.

These pumps may be equipped with a guide shoe
for mounting on guide rails in a wet well. A guide
rail system, controls and liquid level devices are
available from the factory as optional equipment.

If there are any questions regarding the pump
which are not covered in this manual or in other lit
erature accompanying the 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]

RECORDING MODEL AND
SERIAL NUMBERS

Please record the pump model, serial number, volt
age, and motor impeller diameter in the spaces
provided below. Your Gorman‐Rupp distributor
needs this information when you require parts or
service.

Pump Model:

Serial Number:

Voltage:

Impeller Diameter:

WARRANTY INFORMATION

The warranty provided with your pump is part of
Gorman‐Rupp's support program for customers
who operate and maintain their equipment as de
scribed in this and the other accompanying litera
ture. Please note that should the equipment be
abused or modified to change its performance be
yond the original factory specifications, the war
ranty will become void and any claim will be de
nied.

PAGE I - 1INTRODUCTION

OM-06628SFV SERIES X‐PROOF PUMPS

HAZARD AND INSTRUCTION
DEFINITIONS

The following are used to alert personnel to proce
dures which require special attention, 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 de
scribe the requirements and the possible
damage which could result from failure to
follow the procedure.

NOTE

Instructions to aid in installation, operation, and
maintenance or which clarify a procedure.

PAGE I - 2 INTRODUCTION

OM-06628 SFV SERIES X‐PROOF PUMPS

SAFETY - SECTION A

The following information applies
throughout this manual to Gorman‐
Rupp SFV Series CSA and FM approved
submersible pumps.

Before attempting to install, operate, or
service this pump, familiarize yourself
with this manual, and with all other liter
ature shipped with the pump. Unfamil
iarity with all aspects of pump operation
covered in this manual could lead to de
struction of equipment, injury, or death
to personnel.

The motor powering this pump is ap
proved by either CSA and/or FM for
Class 1, Division 1, Groups C and D en
vironments. Refer to the nameplate on
your pump for agency approval inform
ation. Any liquid level devices used with
the pump must be intrinsically safe for
use in these environments.

Any control box used to operate the
pump must meet all applicable local
and national codes for the application.
If the control box is to be installed in an
explosive environment, it must be a
Nema 7 rating or better. If a non‐explo
sion proof control box is used, it must be
located outside the explosive environ
ment. Improper location of a non‐explo
sion proof control box could result in de
struction of equipment, injury, or death
to personnel.

or controls, follow all requirements for
the installation of wiring or electrical
equipment in hazardous locations as
outlined in the National Electric Code.
When entering the pump wet well for in
stallation or service, follow all safety re
quirements for confined space entry.
Failure to observe these requirements
could result in injury or death to person
nel.

The electrical power used to operate
this pump is high enough to cause inju
ry or death. Obtain the services of a qu
alified electrician to make all electrical
connections.

Do not connect the pump motor directly
to the incoming power lines. The pump
motor is designed to operate through a
control box which provides overload
protection and power control; other
wise, the pump warranty will be voided.
Make certain that the pump and control
box are properly grounded, and that the
incoming power matches the require
ments of the pump and controls. Install
and operate the control box in accor
dance with the National Electric Code
and all local codes. Failure to follow
these could result in injury or death to
personnel.

When installing or servicing the pump

This pump is not designed to pump vol
atile, flammable, or corrosive liquids.
The maximum temperature of the liquid
being pumped should not exceed 104_F

PAGE A - 1SAFETY

SFV SERIES X‐PROOF PUMPS OM-06628

(40_C); do not apply the pump at higher
temperatures. Do not attempt to pump
any liquids which may damage the
pump or endanger personnel as a result
of pump failure.

The following precautions should be
taken before attempting to service the
pump; otherwise, injury or death could
result.

1. Familiarize yourself with this man
ual and with all other literature
shipped with the pump.

2. Lock out incoming power to the
pump or control box to ensure that
the pump will remain inoperative.

3. Allow the pump to completely cool
if overheated.

4. Close the discharge valve (if
used).

Do not attempt to lift this pump by the
motor power cable or the piping. Attach
proper lifting equipment to the lifting
device fitted to the pump, and make cer
tain that the hook of the lifting device is
securely positioned in the center of the
pump lifting device. If chains or cables
are wrapped around the pump to lift it,
make certain that they are positioned so
as not to damage the pump, and so that
the load will be balanced.

Do not attempt to change the voltage on
a dual‐voltage motor. If desired to have
the voltage changed, return the pump to
the factory or to an authorized Gorman‐
Rupp repair facility only; otherwise, the
pump warranty will be negated, and
damage to the pump, and injury or death
to personnel can result.

If the pump is used to handle liquids
which may cause illness or disease
through direct exposure, take neces
sary precautions during maintenance
and repair to prevent personal contami
nation.

The motor powering this pump is ap
proved by either CSA and/or FM for Class
1, Division 1, Groups C and D environ
ments. Refer to the nameplate on your
pump for agency approval information. All
repairs to the pump, other than seal, impel
ler and other hydraulic components, must
be performed by a Gorman‐Rupp autho
rized repair facility or the factory. Any re
pairs to the motor assembly performed by
the customer or an unauthorized repair fa
cility negates the CSA and FM approval
and the motor warranty.

After the pump has been installed, make
certain that the pump and all piping or hose
connections are secure before operation.

This pump was wired at the factory only
for the voltage shown on the nameplate.

PAGE A-2 SAFETY

Loose connections can result in damage to
equipment and serious injury to personnel.

OM-06628 SFV SERIES X‐PROOF PUMPS

INSTALLATION - SECTION B

GENERAL INFORMATION

Review all SAFETY information in Section A.

Since pump installations are seldom identical, this
section is intended only to summarize general rec
ommendations and practices required to inspect,
position, and arrange the pump and piping. If there
are any questions concerning your specific instal
lation, contact your Gorman‐Rupp distributor or
the Gorman‐Rupp Company.

The pump motor is not designed to be
operated in air for more than 10 minutes
without overheating. The pump must be
operated through a liquid level control de
signed to cut off power when liquid falls be
low the midpoint of the motor housing
(single pump operation), or below the dis
charge flange (duplex, alternating pump
operation).

Controls, liquid level devices, and a guide rail sys
tem are available from Gorman‐Rupp as optional
equipment. For more information on installing and
operating these options, refer to the other literature
accompanying the option(s).

PREINSTALLATION INSPECTION

The pump assembly was inspected and tested be
fore shipment from the factory. Before installation,
check for damage which may have occurred dur
ing shipment. Check as follows:

a. Inspect the pump assembly for cracks, dents,

damaged threads, and other obvious dam
age.

b. Check for loose attaching hardware. Since

gaskets tend to shrink after drying, check for
loose hardware at the mating surfaces.

c. Inspect the power cable for cuts or any other

obvious damage.

d. Check that amperes, phase, voltage and

hertz indicated on the name plate match the
ratings on the control box and incoming pow
er.

e. Carefully read all tags, decals, and markings

on the pump, and perform all duties indicated.

f. Check for oil leaks. If there is any indication of

an oil leak, see LUBRICATION at the end of
this manual.

LUBRICATION

These pumps are equipped with two separate
mechanical seals.

The seals prevent the liquid being pumped from
entering the seal housing cavity from the pump
end, and at the same time prevents the oil in the
seal housing from leaking into the motor housing.

The upper pump seal is lubricated by oil in the seal
housing (see LUBRICATION at the end of this
manual). The lower seal is lubricated by the medi
um being pumped.

There is no other lubrication required for these
pumps.

Pump Motor Specifications

The motor furnished with this pump is an air‐filled,
60 Hz., Squirrel Cage, Induction Start model;
NEMA Class H Insulation Rated 356_F (180_C),
104_F (40_C) ambient, plus 252_F (140_C) tem
perature rise. The motor is approved for Class 1,
Division 1, Group C and D locations.

See Table B‐1 for motor specifications for each
motor frame size.

PAGE B - 1INSTALLATION

SFV SERIES X‐PROOF PUMPS OM-06628

Table B‐1. Pump Motor Specifications

G‐R Full Locked LR

Motor HP Volts PH Hz RPM Load Rotor Code Start Design Service

Frame Amps Amps kVA Factor

1A 3 230 1 60 1720 13.3 19.3 A 4.4 - 1.15
1A 3 208 3 60 1750 8.62 55.3 H 19.9 B 1.0
1A 3 230 3 60 1750 7.80 50.0 H 19.9 B 1.15
1A 3 460 3 60 1750 3.90 25.0 H 19.9 B 1.15
1A 3 575 3 60 1750 3.12 20.0 H 19.9 B 1.15
2A 4 230 1 60 1714 18.2 80.6 E 18.5 - 1.15
2A 4 208 3 60 1750 12.2 106.1 L 38.2 B 1.15
2A 4 230 3 60 1750 11.0 96.0 L 38.2 B 1.15
2A 4 460 3 60 1750 5.5 48.0 L 38.2 B 1.15
2A 4 575 3 60 1750 4.40 38.4 L 38.2 B 1.15
2A 7 208 3 60 1750 18.1 106.1 F 38.2 B 1.0
2A 7 230 3 60 1750 16.4 96.0 F 38.2 B 1.15
2A 7 460 3 60 1750 8.2 48.0 F 38.2 B 1.15
2A 7 575 3 60 1750 6.60 38.4 F 38.2 B 1.15
3A 7.5 230 1 60 1740 33.0 135 D 31.1 L 1.15
3A 7.5 208 3 60 1750 25.4 184.7 K 66.5 A 1.15
3A 7.5 230 3 60 1750 23.0 167 K 66.5 A 1.15
3A 7.5 460 3 60 1750 11.5 83.5 K 66.5 A 1.15
3A 7.5 575 3 60 1750 9.2 66.8 K 66.5 A 1.15
3A 10 208 3 60 1750 30.0 184.7 H 66.5 A 1.15
3A 10 230 3 60 1750 27.0 167 H 66.5 A 1.15
3A 10 460 3 60 1750 13.5 83.5 H 66.5 A 1.15
3A 10 575 3 60 1750 10.8 66.8 H 66.5 A 1.15
3A 12.5 208 3 60 1750 36.6 184.7 F 66.5 A 1.0
3A 14 230 3 60 1750 37.6 167 E 66.5 A 1.15
3A 14 460 3 60 1750 18.8 83.5 E 66.5 A 1.15
3A 14 575 3 60 1750 15.0 66.8 E 66.5 A 1.15
4A 15 208 3 60 1750 46.8 416 L 149.9 A 1.15
4A 15 230 3 60 1750 42.4 376 L 149.8 A 1.15
4A 15 460 3 60 1750 21.2 188 L 149.8 A 1.15
4A 15 575 3 60 1750 17.0 150 L 149.4 A 1.15
4A 20 208 3 60 1750 58.6 416 J 149.9 A 1.15
4A 20 230 3 60 1750 53.0 376 J 149.8 A 1.15
4A 20 460 3 60 1750 26.5 188 J 149.8 A 1.15
4A 20 575 3 60 1750 21.2 150 J 149.4 A 1.15
4A 24 208 3 60 1750 63.4 416 G 149.9 A 1.0
4A 24 230 3 60 1750 61.6 376 G 149.8 A 1.15
4A 24 460 3 60 1750 30.8 188 G 149.8 A 1.15
4A 24 575 3 60 1750 24.6 150 G 149.4 A 1.15
5A 30 460 3 60 1750 36.6 246 H 196.0 B 1.15
5A 30 575 3 60 1750 29.3 197 H 196.2 B 1.15

PAGE B - 2 INSTALLATION

OM-06628 SFV SERIES X‐PROOF PUMPS

PUMP INSTALLATION

When installing or servicing the pump
or controls, follow all requirements for
the installation of wiring or electrical
equipment in hazardous locations as
outlined in the National Electric Code.
When entering the pump wet well for in
stallation or service, follow all safety re
quirements for confined space entry.
Failure to observe these requirements
could result in injury or death to person
nel.

Do not allow the free end of the power

cable to enter the liquid being pumped.
The free end of the cable must be kept dry
to prevent liquid from wicking through the
cable and into the motor.

NOTE

Refer to the performance curve on the pump Spe
cification Data Sheet when determining the most ef
ficient piping installation. The recommended

maximum submergence depth is 65 feet.

Lifting

Death or serious personal injury and
damage to the pump or components
can occur if proper lifting procedures
are not observed. Make certain that
hoists, chains, slings or cables are in
good working condition and of suffi
cient capacity and that they are posi
tioned so that loads will be balanced
and the pump or components will not be
damaged when lifting. Do not attempt to

lift this pump by the motor or control
cables, or the piping. Attach proper lift
ing equipment to the lifting bail fitted on
the pump. Lift the pump or component
only as high as necessary and keep per
sonnel away from suspended objects.

Pump unit weights will vary depending on the
pump application. 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 equip
ment such as discharge hoses or piping before at
tempting to lift existing, installed units.

Impeller Rotation

Check impeller rotation as follows before installing
the pump on rails or in a wet well.

While checking impeller rotation, secure
the pump to prevent the motor power
cable from coiling.

Suspend the pump by the lifting handle. Apply
power briefly and note the direction of pump kick
back. As viewed from the top, the pump should
kick in a counterclockwise direction; this will indi
cate that impeller rotation is correct.

If the pump kicks in a clockwise direction, impeller
rotation is incorrect. If the pump is powered by a
three‐phase motor, have a qualified electrician in
terchange the control box connections of any two
pump motor power leads. Re‐check pump kick
back; it should now be in a counterclockwise direc
tion.

If rotation is incorrect on a single‐phase motor, con
tact the factory before installing the pump.

Positioning the Pump (Guide Rail Application)

If the pump is to be installed where flam
mable vapors may be present, the guide
rail system must be of a non‐sparking
design suitable for explosion‐proof ser
vice. Failure to observe this require

PAGE B - 3INSTALLATION

SFV SERIES X‐PROOF PUMPS OM-06628

ment could result in injury or death to
personnel.

The pump may equipped with a guide shoe for
mounting on optional guide rails. A discharge el
bow/baseplate is also available as optional equip
ment.

Use a suitable lifting device attached to the lifting
handle to lift the pump. Engage the guide shoe at
the top of the guide rails, and lower the pump into
the sump. When lowered into place, the guide
shoe connects to the optional discharge elbow/
baseplate, and the pump is automatically and se
curely sealed to the piping system; the pump can
be removed or installed without personnel entering
the wet well.

For information on installing the guide rails, see the
literature accompanying the rails. Be sure the in
stallation allows the pump to slide without binding
on the rails or baseplate.

NOTE

When engaging the guide shoe and elbow/base
plate, make sure that the connection is not impeded
by mounting hardware, and that the guide shoe is
fully seated in the baseplate.

ity, keep the line as short and straight as possible.
Elbows and fittings used in discharge lines in
crease friction loss; minimize their use.

It is recommended that a check valve or throttling
valve be installed in the discharge line to control si
phoning or back flow when the pump is shut off.

ELECTRICAL CONNECTIONS

Install and operate this pump in accor
dance with the National Electrical Code
and all local codes. Have a qualified
electrician perform all checks and con
nections in this section.
Never attempt to alter the length of the
pump motor cable or to repair it with a
splice. The power cable and pump mo
tor must be kept completely waterproof.
Serious damage to the pump and injury
or death to personnel can result from
any alteration to the cable.

Field Wiring Connections (Incoming Power)

Reel in any slack control cable so that it is not
dragged into the pump suction.

Positioning the Pump (Stand Application)

Secure a discharge hose to the pump discharge
connection, and use a suitable lifting device at
tached to the lifting handle to lower the pump into
the wet well. The recommended maximum sub

mergence depth is 65 feet.

Make certain that the pump and stand sit level in
the wet well.

Reel in any slack control cable so that it is not
dragged into the pump suction.

Piping

The optional discharge elbow/baseplate is drilled
for connection to a discharge flange for slide rail
applications. Either hose or rigid pipe may be used
to make discharge connections.

If rigid discharge piping is installed, the line must
be independently supported to avoid vibration and
strain on the pump. For maximum pumping capac

Do not connect the pump motor directly
to the incoming power lines. The pump
motor is designed to operate through a
control box which provides overload
protection and power control; other
wise, the pump warranty will be voided.
Make certain that the pump and control
box are properly grounded, and that the
incoming power matches the require
ments of the pump and controls. Install
and operate the control box in accor
dance with the National Electric Code
and all local codes. Failure to follow
these could result in injury or death to
personnel.

Field wiring is not provided with this pump, and
must be supplied by the user. The field wiring must
be of the proper size and type to ensure an ade
quate voltage supply to the pump. Voltage avail

PAGE B - 4 INSTALLATION

OM-06628 SFV SERIES X‐PROOF PUMPS

able at the motor must be within the range indi
cated in Table B‐2.

Table B‐2. Pump Voltage Requirements

NOMINAL
VOLTAGE

230

460

Use conduit cable clamps to secure the incoming
field wiring to the control box. Make certain all con
nections are tight. If necessary, support the cable
weight to prevent excessive strain on cable clamps
and cable.

Refer to the wiring diagrams at the end of this sec
tion for field wiring connections.

Dual Voltage

PHASE

1230 207 253

3208 187 229

3

3

3575 517 632

MINIMUM
VOLTAGE

207

414

MAXIMUM

VOLTAGE

253

506

This pump was wired at the factory only
for the voltage shown on the nameplate.
Do not attempt to change the voltage on
a dual‐voltage motor. If desired to have
the voltage changed, return the pump to
the factory or to an authorized Gorman‐
Rupp repair facility only; otherwise, the
pump warranty will be negated, and
damage to the pump, and injury or death
to personnel can result.

Motor Cable Grounding Test

Do not connect the pump control cable
to the control box or incoming voltage
before verifying the pump ground;
otherwise, personnel will be exposed to
serious injury or death.

Connect one lead of a lamp, bell or similar testing
device to the motor cable green/yellow ground
lead (s). Connect the second test lead to an unin

sulated point on the pump body. The test circuit
should close.

If the test circuit does not close, there is a defect in
the cable or motor which must be corrected.

Control Box Connections

The motor powering this pump is ap
proved by either CSA and/or FM for
Class 1, Division 1, Groups C and D en
vironments. Refer to the nameplate on
your pump for agency approval inform
ation. Any liquid level devices used with
the pump must be intrinsically safe for
use in these environments.
Any control box used to operate the
pump must meet all applicable local
and national codes for the application. If
the control box is to be installed in an ex
plosive environment, it must be a Nema
7 rating or better. If a non‐explosion
proof control box is used, it must be lo
cated outside the explosive environ
ment. Improper location of a non‐explo
sion proof control box could result in de
struction of equipment, injury, or death
to personnel.

This pump is shipped completely wired for the volt
age shown on the nameplate and is ready for op
eration through an approved control box.

Ground the control box in accordance with the in
structions accompanying it.

Ground the pump to the control box using the pow
er cable ground(s) and ground check wire (if so
equipped). Secure the ground wire(s) and ground
check wire (if so equipped) to the grounding lug(s)
inside the control box to ensure a thorough ground
for the pump.

Ground the pump using the power cable
ground wire(s) before applying line po
tential. Failure to properly ground the

PAGE B - 5INSTALLATION

SFV SERIES X‐PROOF PUMPS OM-06628

pump could result in damage to the
pump or control and/or injury or death to
personnel.

Refer to Figures B-1 or B-2 and connect the
pump motor cable to the control box.

The thermal protection contacts will auto
matically re‐close when the motor cools to
the established safe operating tempera
ture. Whenever automatic restarting is not
desirable, connect only to controls which
are wired for manual restart.

Refer to the appropriate wiring diagram accompa
nying the control box when making electrical con

Figure B-1. Single Phase Power

Cable Connections

nections.

Liquid Level Devices

Optional controls available from Gorman‐Rupp
may provide a means to automatically regulate the
liquid level. These control boxes may be con
nected to the following sensing devices which per
form either filling or dewatering functions (see Fi
gure B-4).

Figure B-2. Three Phase Power

Cable Connections

Control leads P1 and P2 provide the motor with
thermal protection. Control leads W1 and W2 pro
vide the motor with moisture protection. Refer to
Figure B-3 and connect the pump control cable to
the control box.

Figure B-3. Control Cable Connections

The internal wiring of the sensing devices
are different for filling and dewatering func
tions. Be sure to follow the instructions in
cluded with the option before making con
nections.

S Diaphragm Type: two fixed‐position sen

sors (upper and lower) each contain a dia
phragm which flexes with changes in liquid
level, thus activating an enclosed miniature
switch.

S Bulb (Float) Type: a bulb raises or lowers

(floats) with the liquid level, thus activating
an enclosed miniature switch.

Other types of liquid level devices may also be
used. Consult the factory for the liquid level device
best suited for your application.

Liquid level devices must be positioned far
enough to allow 6 minutes between starts.
If the pump motor cycles more than 10

PAGE B - 6 INSTALLATION

OM-06628 SFV SERIES X‐PROOF PUMPS

starts per hour, it will over‐heat, resulting in
damage to the motor windings or control

PUMP

CONTROL BOX

TO LEVEL CONTROL CIRCUIT

IN MAIN CONTROL
BOX

LIQUID LEVEL

RANGE

OFF

DEWATERING

ON (FILLING)

BULB (FLOAT TYPE)

Figure B-4. Liquid Level Devices

box components.

TO LEVEL CONTROL CIRCUIT

IN MAIN CONTROL
BOX

LIQUID LEVEL

DIAPHRAGM TYPE

RANGE

DEWATERING

ON (FILLING)

PUMP

CONTROL BOX

OFF

PAGE B - 7INSTALLATION

OM-06628 SFV SERIES X‐PROOF PUMPS

OPERATION - SECTION C

GENERAL INFORMATION

Review all SAFETY information in Section A.

This pump is not designed to pump vol
atile, flammable, or corrosive liquids.
The maximum temperature of the liquid
being pumped should not exceed 104_F
(40_C); do not apply the pump at higher
temperatures. Do not attempt to pump
any liquids which may damage the
pump or endanger personnel as a result
of pump failure.

Follow the instructions on all tags, labels and de
cals attached to the pump.

Pump Performance

Refer to the pump Specification Data Sheet for the
specific performance for your pump.

Control Box

The motor powering this pump is ap
proved by both CSA and FM for Class 1,
Division 1, Groups C and D environ
ments. Refer to the nameplate on your
pump for agency approval information.
Any liquid level devices used with the
pump must be intrinsically safe for use
in these environments

Any control box used to operate the
pump must meet all applicable local
and national codes for the application.
If the control box is to be installed in an
explosive environment, it must be a
Nema 7 rating or better. If a non‐explo

sion proof control box is used, it must be
located outside the explosive environ
ment. Improper location of a non‐explo
sion proof control box could result in de
struction of equipment, injury, or death
to personnel.

See the operating instructions furnished with the
control box, and with other optional accessories
and controls, before attempting to start the pump.

PUMP OPERATION

Liquid Temperature and Overheating.

Overheated pumps can cause severe
burns and injury. If the pump becomes
overheated:

1. Stop the pump immediately.

2. Lock out the power to the control
panel to ensure that the pump will
remain inoperative.

2. Allow the pump to completely cool
if overheated.

3. Close the discharge valve (if
used).

4. Refer to instructions in this manual
before restarting the pump.

Overheating can occur if the pump is misapplied;
if it is started more than 10 times within one hour;
if the control box fails to provide overload or ther
mal protection, or if the pump is operated against
a closed discharge valve for an extended period of
time.

The submersible motor is cooled by the liquid be
ing pumped. To minimize the chance of over‐heat
ing when installed in a simplex application, it is
recommended that at least one‐half of the motor
remain immersed in the liquid.

PAGE C - 1OPERATION

SFV SERIES X‐PROOF PUMPS OM-06628

tempt to handle or service the pump un
less all power to the motor has been
shut off and locked out at the control

Do not start the pump more than 10 times
per hour. If the motor does not cool be
tween starts it will overheat, resulting in
damage to the motor windings or control
box components.

When installed in a standard alternating duplex
application, where one pump runs while the other
is shut down, the pump may be operated continu
ously until fully exposed. The shut down cycle will
provide sufficient time for the motor to cool.

box; otherwise, serious personal injury
could result.

During motor shutoff by the thermal
overload device, control box circuits re
main live. Do not attempt to service any
control box components unless incom
ing power has been shut off.

After stopping the pump, be sure to perform all re
quired maintenance and preservation procedures.

Operational Checks

STARTING, STOPPING, AND
OPERATIONAL CHECKS

Starting

Do not attempt to operate the pump until
impeller rotation has been checked; im
proper rotation will affect pump perform
ance and may damage the pump.

Follow the instructions accompanying the control
box, start the pump, and run any recommended
checks.

Stopping

Follow the instructions accompanying the control
box for stopping the pump.

To detect minor problems, check the pump for
proper operation when it is first started, and at peri
odic intervals during operation.

To avoid serious damage to the pump,
check for unusual noises or excessive vi
bration while the pump is running. If noise
or vibration is excessive, stop operation
and refer to the troubleshooting chart in
Section D.

The suction inlet or impeller may become clogged
with debris. In some cases, stopping the pump
momentarily may backflush this blockage. If back
flushing does not clear the debris, remove the
pump from the sump or wet well and clear manu
ally.

Never introduce air or steam pressure
The integral thermal overload device
will shut off the motor if the temperature
rises above design limits. When the
pump cools and the temperature falls
below these limits, the motor will restart
automatically. To avoid the hazards of
an unexpected motor start‐up, do not at

PAGE C - 2 OPERATION

into the pump casing to remove a block

age. This could result in personal injury

or damage to the equipment. If back

flushing is absolutely necessary, limit

liquid pressure input to 50% of the maxi

mum permissible operating pressure

shown in the pump performance curve

OM-06628 SFV SERIES X‐PROOF PUMPS

(refer to the pump Specification Data
Sheet).

Check the pump for overheating. Overheating can
occur if the pump is misapplied, required to start
repeatedly, if the control box fails to provide over
load or thermal protection, or if the pump is oper
ated against a closed discharge valve for an ex
tended period of time.

Do not start the pump more than 10 times
per hour. If the motor does not cool be
tween starts it will overheat, resulting in
damage to the motor windings or control
box components.

Do not attempt to thaw the pump by us
ing a torch or other source of flame. This
could damage O‐rings or heat the oil in
the seal housing above critical tempera
tures, causing the pump to rupture or
explode.

LUBRICATION

Before installing or removing the lubrica

tion plugs, always make sure the pump is

completely cool, and clean the area

around the plugs to prevent contamination

of the oil.

Check the oil level in the seal cavity before initial

startup, after the first two weeks of operation, and

every month thereafter.

Check the oil level only when the pump

is cool. If the oil level plug is removed

when the pump is hot, pressure in the

seal cavity can cause hot oil to be

ejected as the plug is removed.

Draining Oil

Lay the pump flat on a work surface with one of the

lubrication plugs facing up. Remove the plug slow

ly to release any pressure in the seal housing.

COLD WEATHER PRESERVATION

The pump will not freeze as long as the casing is
submerged in liquid. If the casing is not sub
merged, or if the liquid begins to freeze, remove the
pump from the sump or wet well and dry it thor
oughly. Run the pump for two or three minutes to
dry the inner walls.

If the pump does freeze while it is out of the liquid,
submerge it until thawed; if the liquid is near freez
ing, the pump must be submerged for an extended
period of time. Check thawing by starting the pump
and checking that the shaft rotates freely. If the
pump remains frozen, allow additional thawing
time before attempting to restart.

If submerging does not thaw the pump, move it
into a warm area until completely thawed.

Place a clean container under the other (lower)

plug. Remove the plug and roll the pump on its side

to drain the seal housing.

Condition Of Oil

Check the condition of the oil drained from the

pump. Clear oil indicates that the lower pump seal

is functioning properly. If the oil is milky or contains

water, the lower seal must be changed before the

pump is put back in operation.

Adding Oil

Remove the lubrication plugs as indicated in

Draining Oil. Position the pump upright and add

premium quality submersible pump oil through

one of the plug holes until the oil reaches the bot

tom of the hole. Clean and re‐install the plugs.

PAGE C - 3OPERATION

SFV SERIES X‐PROOF PUMPS OM-06628

The grade of lubricant used is critical to the opera
tion of this pump. Use premium quality hydraulic oil
as specified in Table C-1.

Table C-1. Pump Oil Specifications

Specifications:

Type Premium high viscosity index, anti‐wear hydraulic oil..............................

Viscosity @ 100_F (38_C) 110 to 155...............................................

Viscosity @ 210_F (99_C) 40 to 50..................................................

Dielectric 26,000 (volts‐min)........................................................

Recommended supplier:

Gulf Oil Company Gulf Harmony HVI AW 26..........................................

Acceptable alternate suppliers:

Gulf Oil Company Gulf Harmony 32 AW..............................................

Texas Oil Company Rando HD 32 or HD AZ 32........................................

Sun Oil Company Sunvis 816 or 916.................................................

British Petroleum Oil Company Energol‐HLP 32........................................

Shell Oil Company Tellus 32, Tellus T‐23 or T32.......................................

ARCO Duro 32...................................................................

Exxon Nuto H 32...................................................................

PAGE C - 4 OPERATION

OM-06628 SFV SERIES X‐PROOF PUMPS

TROUBLESHOOTING - SECTION D

Review all SAFETY information in Section A.

3. Allow the pump to completely cool
if overheated.

4. Check the temperature before

The following precautions should be
taken before attempting to service the
pump; otherwise, injury or death could
result.

opening any covers, plates or
plugs.

4. Close the discharge valve (if
used).

1. Familiarize yourself with this man
ual and with all other literature
shipped with the pump.

2. Lock out incoming power to the
pump or control box to ensure that

Many of the probable remedies listed below re
quire use of electrical test instruments; for specific
procedures, see ELECTRICAL TESTING following
the chart.

NOTE

the pump will remain inoperative.

TROUBLE POSSIBLE CAUSE PROBABLE REMEDY

PUMP FAILS TO
START

No power to motor. Check for blown fuse or open

circuit breaker.

Impeller jammed. Check Impeller; disassemble and

repair as necessary.

Motor, voltage or control box incompat‐ Check ratings on pump nameplate
ible; defective connections. and control box; check incoming

voltage; check connections.

Motor cable damaged. Check (see Electrical Testing).

Control box current interrupting or Check control box; check for leaking
moisture‐sensing devices tripped. shaft seals, cut O‐rings, or moisture

wicking through cable.

Open circuit in motor windings or. Check continuity (see Electrical
cable. Testing).

Motor overheated, thermal switches Allow motor to cool.
tripped.

TROUBLESHOOTING PAGE D - 1

SFV SERIES X‐PROOF PUMPS OM-06628

TROUBLE POSSIBLE CAUSE PROBABLE REMEDY

MOTOR RUNS BUT
FAILS TO DELIVER
RATED FLOW OR
PRESSURE

PUMP STARTS
THEN SHUTS OFF

Pump running backwards. Check and correct impeller rotation

(see Rotation in Installation and
Operation Manual).

Voltage too low or too high; excessive Check incoming voltage; check
voltage drop between pump and control. cable length.

Discharge head too high. Reduce discharge head, or install

staging adaptor and additional pump.

Discharge throttling valve partially Open discharge valve; check piping
closed; check valve improperly installed. installation.

Impeller or discharge line clogged. Check and clear as necessary.

Liquid being pumped too thick. Dilute liquid if possible.

Impeller worn or damaged. Replace.

Insufficient liquid in wet well. Stop pump until liquid level rises;

install liquid level devices.

Clogged suction port or impeller Clear blockage; reset overload
causing motor to overload. device in control box.

EXCESSIVE
NOISE OR VIBRA
TION

Motor overheated; thermal switch Allow pump to cool.
tripped.

Moisture sensing device tripped. Return pump to factory or authorized

repair facility.

Motor bearings defective. Return pump to factory or authorized

repair facility.

Motor cable damaged. Check (see Electrical Testing).

Insufficient liquid in wet well. Stop pump until liquid level rises;

install liquid level devices.

Pump operating outside designed Check discharge head and flow;
operating range. adjust as required to meet perform‐

ance specifications.

Impeller clogged. Clear blockage.

Impeller loose or damaged. Check impeller; replace if necessary.

Motor shaft or bearings defective. Replace.

Pumping entrained air. Check wet well liquid level; install

baffles if required.

TROUBLESHOOTINGPAGE D - 2

OM-06628 SFV SERIES X‐PROOF PUMPS

ELECTRICAL TESTING

Make the electrical checks which follow to deter
mine if pump malfunctions are being caused by
problems in the motor or in the power cable.

Test Equipment

A volt/amp/ohmmeter and megohmmeter of ade
quate range and quality are required to conduct
the electrical tests which follow. Use commercially
available equipment as listed below.

Equipment Use

Ammeter To check AC Voltage

and current (amperage)

Ohmeter To measure resistance

(ohms) to ground

can be measured. If possible, measure the
voltage at the control box with:

1. The pump off.

2. The pump running in air.

3. The pump submerged and running under
full load.

The voltage measured under each condition must
be the same.

b. If voltage is balanced when the pump is off but

is imbalanced when the pump is running,
thoroughly check the power source, all inter
connecting cables, and the pump motor to
isolate the defect.

c. Use an Amprobe or equivalent instrument to

measure the current draw (amperage) of
each phase while the pump is running under
full load, and with no load. In each condition,
the amperage readings for all three phases
must match as closely as can be measured.
Normal amperage values are listed in Table 1,
Section B; these values apply only when the
voltage at the site is the normal voltage listed.

Refer to the wiring diagram(s) accompany
ing the motor and control box before re
connecting any electrical leads which have
been disconnected. Connections to the
wrong terminals may damage the motor
and/or control devices.

Voltage Imbalance

Use a voltmeter to read each phase of the incom
ing 3‐phase power. Each phase must balance with
the other two as closely as can be measured with a
commercial instrument. If the phases are out of
balance, contact your power company. If the
phases are balanced, check out the motor as de
scribed in the following steps:

a. Use a voltmeter, Amprobe, or equivalent in

strument to read the voltage of incoming
power lines 1 and 2, 2 and 3, and 1 and 3 at the
control box. Voltage must match as closely as

TROUBLESHOOTING PAGE D - 3

Motor and Power Cable Continuity

Set the megohmmeter at R x 1 scale and zero‐
balance it. Test as follows:

a. Shut off incoming power to the control box,

and disconnect the motor power cable leads.
Connect the megohmmeter test leads to any
two power cable leads, and note the megohm
meter reading. A high resistance reading indi
cates an open or broken circuit in the power
cable or motor windings, or a bad connection
between the motor and cable.

b. Repeat Step a. with each set of leads. The

three readings should be as close as can be
measured.

c. If readings indicate that continuity problems

exist in the motor or power cable, the motor
must be returned to the factory or to a Gor
man‐Rupp authorized repair facility.

SFV SERIES X‐PROOF PUMPS OM-06628

Insulation Resistance

Set the megohmmeter at R x 100, and zero‐ba
lance it. Test as follows:

a. Shut off incoming power to the control box,

and disconnect the motor power cable leads.
Connect one megohmmeter test lead to the
motor cable green/yellow ground lead. Touch
the other test lead to each of the motor cable
leads in turn. Note the readings.

b. Readings will indicate resistance values in

both the power cable and motor windings.If
resistance reads infinity (1), insulation is
good. If resistance reads between infinity (1),
and 1 megohm, insulation is acceptable but
should be rechecked regularly. If resistance
reads less than 1 megohm, insulation should
be checked more closely and frequently.

c. If readings indicate that a ground exists, the

motor must be returned to the factory or to a
Gorman‐Rupp authorized repair facility.

TROUBLESHOOTINGPAGE D - 4

PUMP MAINTENANCE AND REPAIR - SECTION E

OM-06628SFV SERIES X‐PROOF PUMPS

GENERAL INFORMATION

Review all SAFETY information in Section A.

Do not attempt to service the pump as
sembly unless all power to the motor
has been shut off at the control box;
otherwise, injury or death could result.

Use a lifting device with sufficient ca
pacity. If slings or chains are used to
move the pump or components, make
sure that the load is balanced; other
wise serious personal injury or death
could result.

Select a suitable location, preferably indoors, to
perform required maintenance. All work must be
performed by qualified personnel.

Check TROUBLESHOOTING, Section D to deter
mine causes and remedies of pump problems.

This section of the manual provides maintenance
instructions required to properly service the pump
hydraulic components only. Pump motor mainte
nance may be performed only by a Gorman‐Rupp
authorized repair facility, or the factory. Otherwise,
the pump warranty will be negated, and damage
to the pump, and injury or death to personnel can
result. Contact the factory for the authorized repair
facility closest to you.

Lifting

Pump unit weights will vary depending on the
pump application. 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 equip
ment such as discharge hoses or piping before at
tempting to lift existing, installed units.

The motor powering this pump is ap
proved by either CSA and/or FM for Class
1, Division 1, Groups C and D environ
ments. Refer to the nameplate on your
pump for agency approval information. All
repairs to the pump, other than seal, impel
ler and other hydraulic components, must
be performed by a Gorman‐Rupp autho
rized repair facility or the factory. Any re
pairs to the motor assembly performed by
the customer or an unauthorized repair fa
cility negates the agency approval and the
motor warranty.

Pump Serial Numbers

Pumps in the following serial number range are
covered in this section.

(From S/N 1531245 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.

PAGE E - 1MAINTENANCE AND REPAIR

PARTS PAGE

SFV SERIES X‐PROOF PUMPSOM-06628

ILLUSTRATION

Figure E-1. SFV3A-X Pump Model Assembly

MAINTENANCE AND REPAIRPAGE E - 2

SFV3A-X Pump Model Assembly

ITEM

PART NAME PART

NO.

1 PUMP CASING

. -ANSI SEE NOTE BELOW 1
. -DIN SEE NOTE BELOW 1

2 IMPELLER SEE NOTE BELOW 1

3 IMPELLER WASHER KB08 17000 1

4 IMPELLER NUT MBA14 17000 1
5 . PIPE PLUG P02 17000 1

6 O‐RING 25152-266 --- 1
7 MOTOR ASSY CONSULT FACTORY
8 LOCK WASHER MJ10 17000 10

9 HEX HD CAPSCREW MB1030 17000 4
10 TERM HOUSING ASSY NOT AVAILABLE
11 HEX NUT NOT AVAILABLE
12 HEX HD CAPSCREW MB1025 17000 2
13 LIFTING BAIL ASSY 44713-046 17040 1
14 SEAL PLATE 38272-427 10000 1

15 O‐RING 25152-267 --- 1
16 FLAT HD CAPSCREW MF0514 17000 1

17 SEAL ASSY 25285-853 --- 1

18 SPRING RETAINER 31161-041 17000 1

19 IMP ADJ SHIM SET 513A 17090 1
20 INFINITY DECAL 38811-435 --- 1
21 NAME PLATE NOT AVAILABLE 1
22 DRIVE SCREW NOT AVAILABLE 4

NOT SHOWN:

STAGGERWING DECAL 38811-434 --- 1
G‐R DECAL GR-03 --- 1

NUMBER

MAT'L
CODE

Parts List

QTY ITEM

NO.

OPTIONAL:

OM-06628SFV SERIES X‐PROOF PUMPS

PART NAME PART

NUMBER

ANSI SLIDE RAIL VERSION

GUIDE SHOE KIT 48156-557 --- 1

-GUIDE SHOE SEAL 31513-053 19020 1
SLIDE RAIL KIT 48156-024 --- 1
ALIGNMENT KIT 48786-551 --- 1
BASEPLATE KIT

-SHORT 48156-601 --- 1

-LONG 48156-602 --- 1
LIFTING CABLE KIT

-36' 48151-501 --- 1

-50' 48151-503 --- 1

DIN SLIDE RAIL VERSION

GUIDE SHOE KIT 48156-558 --- 1

-GUIDE SHOE SEAL 31513-053 19020 1
SLIDE RAIL KIT CONSULT FACTORY 1
ALIGNMENT KIT 48786-552 --- 1
BASEPLATE KIT

-SHORT CONSULT FACTORY 1

-LONG CONSULT FACTORY 1
LIFTING CABLE KIT

-36' 48151-501 --- 1

-50' 48151-503 --- 1

LIQUID LEVEL DEVICES:

DIAPHRAGM TYPE GRP48-03 --- 1

GRP48-06 --- 1
FLOAT TYPE 27471-180 --- 1
120V LIQUID LEVEL

CONTROL RELAY 27521-321 --- 1

MAT'L
CODE

QTY

. INCLUDED W/ANSI REPAIR PUMP CASING ASSY 46472-913 --- 1

. INCLUDED W/DIN REPAIR PUMP CASING ASSY 46472-920 --- 1

INDICATES PARTS RECOMMENDED FOR STOCK

NOTE: WHEN ORDERING A REPLACEMENT IMPELLER, PROVIDE THE FACTORY WITH THE PUMP MODEL, S/N AND IMPELLER

DIAMETER (FROM NAMEPLATE)

PAGE E - 3MAINTENANCE AND REPAIR

ILLUSTRATION

SFV SERIES X‐PROOF PUMPSOM-06628

Figure E-2. SFV3B-X Pump Model Assembly

MAINTENANCE AND REPAIRPAGE E - 4

SFV3B-X Pump Model Assembly

ITEM

PART NAME PART

NO.

1 PUMP CASING

-ANSI SEE NOTE BELOW 1

-DIN SEE NOTE BELOW 1

2 IMPELLER SEE NOTE BELOW 1

3 IMPELLER WASHER KB08 17000 1

4 IMPELLER NUT MBA14 17000 1
5 . PIPE PLUG P02 17000 1

6 O‐RING 25152-266 --- 1
7 MOTOR ASSY CONSULT FACTORY
8 LOCK WASHER MJ10 17000 10

9 HEX HD CAPSCREW MB1035 17000 4
10 TERM HOUSING ASSY NOT AVAILABLE
11 HEX NUT NOT AVAILABLE
12 HEX HD CAPSCREW MB1025 17000 2
13 LIFTING BAIL ASSY 44713-047 17040 1
14 SEAL PLATE 38272-427 10000 1

15 O‐RING 25152-267 --- 1
16 FLAT HD CAPSCREW MF0514 17000 1

17 SEAL ASSY 25285-853 --- 1

18 SPRING RETAINER 31161-041 17000 1

19 IMP ADJ SHIM SET 513A 17090 1
20 INFINITY DECAL 38811-435 --- 1
21 NAME PLATE NOT AVAILABLE 1
22 DRIVE SCREW NOT AVAILABLE 4

NOT SHOWN:

STAGGERWING DECAL 38811-434 --- 1
G‐R DECAL GR-03 --- 1

NUMBER

MAT'L
CODE

Parts List

QTY ITEM

NO.

OPTIONAL:

OM-06628SFV SERIES X‐PROOF PUMPS

PART NAME PART

NUMBER

ANSI SLIDE RAIL VERSION

GUIDE SHOE KIT 48156-557 --- 1

-GUIDE SHOE SEAL 31513-053 19020 1
SLIDE RAIL KIT 48156-024 --- 1
ALIGNMENT KIT 48786-551 --- 1
BASEPLATE KIT

-SHORT 48156-601 --- 1

-LONG 48156-602 --- 1
LIFTING CABLE KIT

-36' 48151-501 --- 1

-50' 48151-503 --- 1

DIN SLIDE RAIL VERSION

GUIDE SHOE KIT 48156-558 --- 1

-GUIDE SHOE SEAL 31513-053 19020 1
SLIDE RAIL KIT CONSULT FACTORY 1
ALIGNMENT KIT 48786-552 --- 1
BASEPLATE KIT

-SHORT CONSULT FACTORY 1

-LONG CONSULT FACTORY 1
LIFTING CABLE KIT

-36' 48151-501 --- 1

-50' 48151-503 --- 1

LIQUID LEVEL DEVICES:

DIAPHRAGM TYPE GRP48-03 --- 1

GRP48-06 --- 1
FLOAT TYPE 27471-180 --- 1
120V LIQUID LEVEL

CONTROL RELAY 27521-321 --- 1

MAT'L
CODE

QTY

. INCLUDED W/ANSI REPAIR PUMP CASING ASSY 46472-913 --- 1

. INCLUDED W/DIN REPAIR PUMP CASING ASSY 46472-920 --- 1

INDICATES PARTS RECOMMENDED FOR STOCK

NOTE: WHEN ORDERING A REPLACEMENT IMPELLER, PROVIDE THE FACTORY WITH THE PUMP MODEL, S/N AND IMPELLER

DIAMETER (FROM NAMEPLATE)

PAGE E - 5MAINTENANCE AND REPAIR

ILLUSTRATION

SFV SERIES X‐PROOF PUMPSOM-06628

Figure E-3. SFV4A-X Pump Model Assembly

MAINTENANCE AND REPAIRPAGE E - 6

SFV4A-X Pump Model Assembly

ITEM

PART NAME PART

NO.

1 PUMP CASING

-ANSI SEE NOTE BELOW 1

-DIN SEE NOTE BELOW 1

2 IMPELLER SEE NOTE BELOW 1

3 IMPELLER WASHER KB08 17000 1

4 IMPELLER NUT MBA14 17000 1
5 . PIPE PLUG P02 17000 1

6 O‐RING 25152-273 --- 1
7 MOTOR ASSY CONSULT FACTORY
8 LOCK WASHER MJ10 17000 10

9 HEX HD CAPSCREW MB1035 17000 4
10 TERM HOUSING ASSY NOT AVAILABLE
11 HEX NUT NOT AVAILABLE
12 HEX HD CAPSCREW MB1025 17000 2
13 LIFTING BAIL ASSY 44713-047 17040 1
14 SEAL PLATE 38272-538 10000 1

15 O‐RING 25152-377 --- 1
16 FLAT HD CAPSCREW MF0516 17000 1

17 SEAL ASSY 25285-853 --- 1

18 SPRING RETAINER 31161-041 17000 1

19 IMP ADJ SHIM SET 513A 17090 1
20 INFINITY DECAL 38811-435 --- 1
21 NAME PLATE NOT AVAILABLE 1
22 DRIVE SCREW NOT AVAILABLE 4

NOT SHOWN:

STAGGERWING DECAL 38811-434 --- 1
G‐R DECAL GR-03 --- 1

NUMBER

MAT'L
CODE

Parts List

QTY ITEM

NO.

OPTIONAL:

OM-06628SFV SERIES X‐PROOF PUMPS

PART NAME PART

NUMBER

ANSI SLIDE RAIL VERSION

GUIDE SHOE KIT 48156-559 --- 1

-GUIDE SHOE SEAL 31513-054 19020 1
SLIDE RAIL KIT 48156-024 --- 1
ALIGNMENT KIT 48786-551 --- 1
BASEPLATE KIT

-SHORT 48156-603 --- 1

-LONG 48156-604 --- 1
LIFTING CABLE KIT

-36' 48151-502 --- 1

-50' 48151-504 --- 1

DIN SLIDE RAIL VERSION

GUIDE SHOE KIT 48156-560 --- 1

-GUIDE SHOE SEAL 31513-054 19020 1
SLIDE RAIL KIT CONSULT FACTORY 1
ALIGNMENT KIT 48786-552 --- 1
BASEPLATE KIT

-SHORT CONSULT FACTORY 1

-LONG CONSULT FACTORY 1
LIFTING CABLE KIT

-36' 48151-502 --- 1

-50' 48151-504 --- 1

LIQUID LEVEL DEVICES:

DIAPHRAGM TYPE GRP48-03 --- 1

GRP48-06 --- 1
FLOAT TYPE 27471-180 --- 1
120V LIQUID LEVEL

CONTROL RELAY 27521-321 --- 1

MAT'L
CODE

QTY

. INCLUDED W/ANSI REPAIR PUMP CASING ASSY 46472-914 --- 1

. INCLUDED W/DIN REPAIR PUMP CASING ASSY 46472-921 --- 1

INDICATES PARTS RECOMMENDED FOR STOCK

NOTE: WHEN ORDERING A REPLACEMENT IMPELLER, PROVIDE THE FACTORY WITH THE PUMP MODEL, S/N AND IMPELLER

DIAMETER (FROM NAMEPLATE)

PAGE E - 7MAINTENANCE AND REPAIR

ILLUSTRATION

SFV SERIES X‐PROOF PUMPSOM-06628

Figure E-4. SFV4B-X Pump Model Assembly

MAINTENANCE AND REPAIRPAGE E - 8

SFV4B-X Pump Model Assembly

ITEM

PART NAME PART

NO.

1 PUMP CASING

. -ANSI SEE NOTE BELOW 1
. -DIN SEE NOTE BELOW 1

2 IMPELLER SEE NOTE BELOW 1
3 IMPELLER WASHER 31514-017 17000 1
4 SOCKET HD CAPSCREW MBD1025 17000 1
5 . PIPE PLUG P02 17000 1
6 O‐RING 25152-273 --- 1

7 MOTOR ASSY CONSULT FACTORY
8 LOCK WASHER MJ12 17000 6

9 HEX HD CAPSCREW MB1245 17000 4
10 TERM HOUSING ASSY NOT AVAILABLE
11 LOCK WASHER NOT AVAILABLE
12 HEX NUT NOT AVAILABLE
13 HEX HD CAPSCREW MB1230 17000 2
14 LIFTING BAIL ASSY 44713-048 17040 1
15 SEAL PLATE 38272-535 10000 1

16 O‐RING 25152-377 --- 1
17 FLAT HD CAPSCREW MF0516 17000 1

18 SHAFT SLEEVE O‐RING 25154-022 --- 1
19 SHAFT SLEEVE 31441-030 1706H 1
20 SEAL ASSY 25285-856 --- 1
21 SPRING RETAINER 31161-042 17000 1
22 IMP ADJ SHIM SET 37J 17090 1
23 INFINITY DECAL 38811-435 --- 1

24 NAME PLATE NOT AVAILABLE 1
25 DRIVE SCREW NOT AVAILABLE 4

NOT SHOWN:

STAGGERWING DECAL 38811-434 --- 1
G‐R DECAL GR-03 --- 1

NUMBER

MAT'L
CODE

Parts List

QTY ITEM

NO.

OPTIONAL:

OM-06628SFV SERIES X‐PROOF PUMPS

PART NAME PART

NUMBER

ANSI SLIDE RAIL VERSION

GUIDE SHOE KIT 48156-559 --- 1

-GUIDE SHOE SEAL 31513-054 19020 1
SLIDE RAIL KIT 48156-024 --- 1
ALIGNMENT KIT 48786-551 --- 1
BASEPLATE KIT

-SHORT 48156-603 --- 1

-LONG 48156-604 --- 1
LIFTING CABLE KIT

-36' 48151-502 --- 1

-50' 48151-504 --- 1

DIN SLIDE RAIL VERSION

GUIDE SHOE KIT 48156-560 --- 1

-GUIDE SHOE SEAL 31513-054 19020 1
SLIDE RAIL KIT CONSULT FACTORY 1
ALIGNMENT KIT 48786-552 --- 1
BASEPLATE KIT

-SHORT CONSULT FACTORY 1

-LONG CONSULT FACTORY 1
LIFTING CABLE KIT

-36' 48151-502 --- 1

-50' 48151-504 --- 1

LIQUID LEVEL DEVICES:

DIAPHRAGM TYPE GRP48-03 --- 1

GRP48-06 --- 1
FLOAT TYPE 27471-180 --- 1
120V LIQUID LEVEL

CONTROL RELAY 27521-321 --- 1

MAT'L
CODE

QTY

. INCLUDED W/ANSI REPAIR PUMP CASING ASSY 46472-914 --- 1

. INCLUDED W/DIN REPAIR PUMP CASING ASSY 46472-921 --- 1

INDICATES PARTS RECOMMENDED FOR STOCK

NOTE: WHEN ORDERING A REPLACEMENT IMPELLER, PROVIDE THE FACTORY WITH THE PUMP MODEL, S/N AND IMPELLER

DIAMETER (FROM NAMEPLATE)

PAGE E - 9MAINTENANCE AND REPAIR

ILLUSTRATION

SFV SERIES X‐PROOF PUMPSOM-06628

Figure E-5. SFV4C-X Pump Model Assembly

MAINTENANCE AND REPAIRPAGE E - 10

SFV4C-X Pump Model Assembly

ITEM

PART NAME PART

NO.

1 PUMP CASING

-ANSI 38224-524 10000 1

-DIN 38224-520 10000 1
2 IMPELLER SEE NOTE BELOW 1
3 IMPELLER WASHER 31514-017 17000 1
4 SOCKET HD CAPSCREW MBD1025 17000 1
5 O‐RING 25152-278 --- 1

6 MOTOR ASSY CONSULT FACTORY
7 LOCK WASHER MJ12 17000 6
8 HEX HD CAPSCREW MB1240 17000 4
9 TERM HOUSING ASSY NOT AVAILABLE

10 LOCK WASHER NOT AVAILABLE
11 HEX NUT NOT AVAILABLE
12 HEX HD CAPSCREW MB1230 17000 2
13 LIFTING BAIL ASSY 44713-048 17040 1
14 SEAL PLATE 38272-614 10000 1
15 O‐RING 25152-382 --- 1
16 FLAT HD CAPSCREW MF0516 17000 1
17 SHAFT SLEEVE O‐RING 25154-022 --- 1
18 SHAFT SLEEVE 31441-030 1706H 1

19 SEAL ASSY 25285-856 --- 1
20 SPRING RETAINER 31161-042 17000 1
21 IMP ADJ SHIM SET 37J 17090 1

22 INFINITY DECAL 38811-435 --- 1
23 NAME PLATE NOT AVAILABLE 1
24 DRIVE SCREW NOT AVAILABLE 4

NOT SHOWN:

STAGGERWING DECAL 38811-434 --- 1
G‐R DECAL GR-03 --- 1

NUMBER

MAT'L
CODE

Parts List

QTY ITEM

NO.

OPTIONAL:

OM-06628SFV SERIES X‐PROOF PUMPS

PART NAME PART

NUMBER

ANSI SLIDE RAIL VERSION

GUIDE SHOE KIT 48156-559 --- 1

-GUIDE SHOE SEAL 31513-054 19020 1
SLIDE RAIL KIT 48156-024 --- 1
ALIGNMENT KIT 48786-551 --- 1
BASEPLATE KIT

-SHORT 48156-603 --- 1

-LONG 48156-604 --- 1
LIFTING CABLE KIT

-36' 48151-502 --- 1

-50' 48151-504 --- 1

DIN SLIDE RAIL VERSION

GUIDE SHOE KIT 48156-560 --- 1

-GUIDE SHOE SEAL 31513-054 19020 1
SLIDE RAIL KIT CONSULT FACTORY 1
ALIGNMENT KIT 48786-552 --- 1
BASEPLATE KIT

-SHORT CONSULT FACTORY 1

-LONG CONSULT FACTORY 1
LIFTING CABLE KIT

-36' 48151-502 --- 1

-50' 48151-504 --- 1

LIQUID LEVEL DEVICES:

DIAPHRAGM TYPE GRP48-03 --- 1

GRP48-06 --- 1
FLOAT TYPE 27471-180 --- 1
120V LIQUID LEVEL

CONTROL RELAY 27521-321 --- 1

MAT'L
CODE

QTY

INDICATES PARTS RECOMMENDED FOR STOCK

NOTE: WHEN ORDERING A REPLACEMENT IMPELLER, PROVIDE THE FACTORY WITH THE PUMP MODEL, S/N AND IMPELLER

DIAMETER (FROM NAMEPLATE)

PAGE E - 11MAINTENANCE AND REPAIR

ILLUSTRATION

SFV SERIES X‐PROOF PUMPSOM-06628

Figure E-6. SFV4D-X Pump Model Assembly

MAINTENANCE AND REPAIRPAGE E - 12

SFV4D-X Pump Model Assembly

ITEM

PART NAME PART

NO.

1 PUMP CASING

-ANSI 38224-524 10000 1

-DIN 38224-520 10000 1
2 IMPELLER SEE NOTE BELOW 1
3 IMPELLER WASHER 31514-017 17000 1
4 SOCKET HD CAPSCREW MBD1020 17000 1
5 O‐RING 25152-278 --- 1

6 MOTOR ASSY CONSULT FACTORY
7 LOCK WASHER MJ12 17000 6
8 HEX HD CAPSCREW MB1240 17000 4
9 TERM HOUSING ASSY NOT AVAILABLE

10 LOCK WASHER NOT AVAILABLE
11 HEX NUT NOT AVAILABLE
12 HEX HD CAPSCREW MB1230 17000 2
13 LIFTING BAIL ASSY 44713-048 17040 1
14 SEAL PLATE 38272-614 10000 1
15 O‐RING 25152-382 --- 1
16 FLAT HD CAPSCREW MF0516 17000 1
17 SHAFT SLEEVE O‐RING 25154-022 --- 1
18 SHAFT SLEEVE 31441-030 1706H 1

19 SEAL ASSY 25285-856 --- 1
20 SPRING RETAINER 31161-042 17000 1
21 IMP ADJ SHIM SET 37J 17090 1

22 INFINITY DECAL 38811-435 --- 1
23 NAME PLATE NOT AVAILABLE 1
24 DRIVE SCREW NOT AVAILABLE 4

NOT SHOWN:

STAGGERWING DECAL 38811-434 --- 1
G‐R DECAL GR-03 --- 1

NUMBER

MAT'L
CODE

Parts List

QTY ITEM

NO.

OPTIONAL:

OM-06628SFV SERIES X‐PROOF PUMPS

PART NAME PART

NUMBER

ANSI SLIDE RAIL VERSION

GUIDE SHOE KIT 48156-559 --- 1

-GUIDE SHOE SEAL 31513-054 19020 1
SLIDE RAIL KIT 48156-024 --- 1
ALIGNMENT KIT 48786-551 --- 1
BASEPLATE KIT

-SHORT 48156-603 --- 1

-LONG 48156-604 --- 1
LIFTING CABLE KIT

-36' 48151-502 --- 1

-50' 48151-504 --- 1

DIN SLIDE RAIL VERSION

GUIDE SHOE KIT 48156-560 --- 1

-GUIDE SHOE SEAL 31513-054 19020 1
SLIDE RAIL KIT CONSULT FACTORY 1
ALIGNMENT KIT 48786-552 --- 1
BASEPLATE KIT

-SHORT CONSULT FACTORY 1

-LONG CONSULT FACTORY 1
LIFTING CABLE KIT

-36' 48151-502 --- 1

-50' 48151-504 --- 1

LIQUID LEVEL DEVICES:

DIAPHRAGM TYPE GRP48-03 --- 1

GRP48-06 --- 1
FLOAT TYPE 27471-180 --- 1
120V LIQUID LEVEL

CONTROL RELAY 27521-321 --- 1

MAT'L
CODE

QTY

INDICATES PARTS RECOMMENDED FOR STOCK

NOTE: WHEN ORDERING A REPLACEMENT IMPELLER, PROVIDE THE FACTORY WITH THE PUMP MODEL, S/N AND IMPELLER

DIAMETER (FROM NAMEPLATE)

PAGE E - 13MAINTENANCE AND REPAIR

ILLUSTRATION

SFV SERIES X‐PROOF PUMPSOM-06628

Figure E-7. SFV4E-X Pump Model Assembly

MAINTENANCE AND REPAIRPAGE E - 14

SFV4E-X Pump Model Assembly

ITEM

PART NAME PART

NO.

1 PUMP CASING

-ANSI 38224-524 10000 1

-DIN 38224-520 10000 1
2 IMPELLER SEE NOTE BELOW 1
3 IMPELLER WASHER 31514-017 17000 1
4 SOCKET HD CAPSCREW MBD1020 17000 1
5 O‐RING 25152-278 --- 1

6 MOTOR ASSY CONSULT FACTORY
7 LOCK WASHER MJ12 17000 6
8 HEX HD CAPSCREW MB1240 17000 4
9 NAME PLATE NOT AVAILABLE 1

10 DRIVE SCREW NOT AVAILABLE 4
11 TERM HOUSING ASSY NOT AVAILABLE
12 LOCK WASHER NOT AVAILABLE
13 HEX NUT NOT AVAILABLE
14 HEX HD CAPSCREW MB1230 17000 2
15 LIFTING BAIL ASSY 44713-048 17040 1
16 SEAL PLATE 38272-614 10000 1
17 O‐RING 25152-382 --- 1
18 FLAT HD CAPSCREW MF0516 17000 1
19 SHAFT SLEEVE O‐RING 25154-022 --- 1
20 SHAFT SLEEVE 31441-030 1706H 1
21 SEAL ASSY 25285-856 --- 1
22 SPRING RETAINER 31161-042 17000 1

23 IMP ADJ SHIM SET 37J 17090 1
24 INFINITY DECAL 38811-435 --- 1

NOT SHOWN:

STAGGERWING DECAL 38811-434 --- 1
G‐R DECAL GR-03 --- 1

NUMBER

MAT'L
CODE

Parts List

QTY ITEM

NO.

OPTIONAL:

OM-06628SFV SERIES X‐PROOF PUMPS

PART NAME PART

NUMBER

ANSI SLIDE RAIL VERSION

GUIDE SHOE KIT 48156-559 --- 1

-GUIDE SHOE SEAL 31513-054 19020 1
SLIDE RAIL KIT 48156-024 --- 1
ALIGNMENT KIT 48786-551 --- 1
BASEPLATE KIT

-SHORT 48156-603 --- 1

-LONG 48156-604 --- 1
LIFTING CABLE KIT

-36' 48151-502 --- 1

-50' 48151-504 --- 1

DIN SLIDE RAIL VERSION

GUIDE SHOE KIT 48156-560 --- 1

-GUIDE SHOE SEAL 31513-054 19020 1
SLIDE RAIL KIT CONSULT FACTORY 1
ALIGNMENT KIT 48786-552 --- 1
BASEPLATE KIT

-SHORT CONSULT FACTORY 1

-LONG CONSULT FACTORY 1
LIFTING CABLE KIT

-36' 48151-502 --- 1

-50' 48151-504 --- 1

LIQUID LEVEL DEVICES:

DIAPHRAGM TYPE GRP48-03 --- 1

GRP48-06 --- 1
FLOAT TYPE 27471-180 --- 1
120V LIQUID LEVEL

CONTROL RELAY 27521-321 --- 1

MAT'L
CODE

QTY

INDICATES PARTS RECOMMENDED FOR STOCK

NOTE: WHEN ORDERING A REPLACEMENT IMPELLER, PROVIDE THE FACTORY WITH THE PUMP MODEL, S/N AND IMPELLER

DIAMETER (FROM NAMEPLATE)

PAGE E - 15MAINTENANCE AND REPAIR

SFV SERIES X‐PROOF PUMPSOM-06628

PUMP END DISASSEMBLY AND REASSEMBLY

Review all SAFETY information in Section A.

This manual will alert personnel to known proce
dures which require special attention, to those
which could damage equipment, and to those
which could be dangerous to personnel. However,
this manual cannot possibly anticipate and provide
detailed precautions for every situation that might
occur during maintenance of the unit. Therefore, it
is the responsibility of the owner/maintenance per
sonnel to ensure that only safe, established main
tenance procedures are used, and that any proce
dures not addressed in this manual are performed
only after establishing that neither personal safety
nor pump integrity are compromised by such prac
tices.

Death or serious personal injury and
damage to the pump or components
can occur if proper lifting procedures
are not observed. Make certain that
hoists, chains, slings or cables are in
good working condition and of suffi
cient capacity and that they are posi
tioned so that loads will be balanced
and the pump or components will not be
damaged when lifting. Do not attempt to
lift this pump by the motor or control
cables, or the piping. Attach proper lift
ing equipment to the lifting bail fitted on
the pump. Lift the pump or component
only as high as necessary and keep per
sonnel away from suspended objects.

Select a suitable location, preferably indoors, to
perform required maintenance. All work must be
performed by qualified personnel.

Check the chart in TROUBLESHOOTING, Section
D 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 the following instructions.

If the problem is electrical, maintenance may be
performed only by a Gorman‐Rupp authorized re
pair facility, or the factory. Otherwise, the pump
warranty will be negated, and damage to the
pump, and injury or death to personnel can result.
Contact the factory for the authorized repair facility
closest to you.

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.

Carefully inspect any O‐rings before removal and
cleaning to determine if a proper seal and com
pression existed prior to disassembly. If sealing
was faulty or questionable, the cause must be de
termined and corrected before reassembly. All O‐
rings must be replaced if disturbed.

PUMP END DISASSEMBLY

Preparing Pump for Disassembly

If the pump is used to handle liquids
which may cause illness or disease
through direct exposure, take neces
sary precautions during maintenance
and repair to prevent personal contam
ination.

Use the hoisting bail to remove the pump from the
wet well or sump, and move it to a suitable location
for disassembly.

Do not attempt to lift the pump by the
motor power cable or the piping. Attach

MAINTENANCE AND REPAIRPAGE E - 16

OM-06628SFV SERIES X‐PROOF PUMPS

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.

If the pump is designed for a guide rail application,
it is not necessary to remove the guide shoe for
most pump maintenance procedures. If removal of
the guide shoe is desired, disengage the hardware
securing the guide shoe to the pump casing and
remove the guide shoe and guide shoe seal.

If the pump is designed for a stand application, dis
engage the hardware securing the pump to the
stand before proceeding with pump maintenance.

Pump Casing Removal

Position the pump assembly on a flat surface and
use the lifting bail and lifting device to support the
pump in a vertical position. Remove the hardware
securing the motor assembly to the pump casing.

Using the lifting device, raise the motor assembly
out of the pump casing. It may be necessary to tap
around the circumference of the pump casing with
a soft‐faced mallet to break the seal between the
casing and motor. When the motor is free of the
pump casing, position the motor and remaining
pump end components horizontally on a flat sur
face for further disassembly. Chock the pump to
prevent rolling when positioned horizontally.

move the plug slowly and permit pressure
to vent to atmosphere.

Lay the pump on its side with one of the pipe plugs
facing up. Clean any dirt from around the plug. Re
move the plug slowly to release any pressure and
install a short pipe nipple in the hole. Roll the pump
and drain the seal oil into a clean container. In
spect the oil for water, dirt, or cloudy condition
which could indicate lower seal failure or poor O‐
ring seal.

Impeller Removal

Wedge a soft metal rod between the impeller vanes
to prevent impeller rotation.

NOTE

A strap wrench may also be used to immobilize the
impeller.

Remove the impeller nut or capscrew.

Remove the impeller washer. Remove the metal
rod or strap wrench used to immobilize the im
peller.

To remove the impeller, use two thin‐bladed screw
drivers positioned 180_ apart to pry on the back of
the impeller and “walk” the impeller off the shaft.
Use increasingly larger screwdrivers (or wedges)
as necessary. After the impeller comes free of the
shaft, retain the impeller key.

Remove the impeller adjusting shims. Tie and tag
the shims for ease of reassembly.

Remove the O‐ring from the outer shoulder of the
seal plate.

Draining Oil From Seal Cavity

The seal cavity oil must be drained to prevent the
oil from escaping as the impeller is removed.

Let the pump cool before removing the
seal cavity drain plug. Pressure built up
within a hot pump could cause the oil to
spray out when the plug is removed. Re

If no further disassembly is required, proceed to
the appropriate areas in PUMP END REASSEMB

LY.

Seal Removal (No Shaft Sleeve)

Carefully remove the spring retainer and seal
spring. Lubricate the rotor shaft with light oil and
work oil under the bellows assembly. Pull the rotat
ing portion of the seal off the shaft.

Work a pair of stiff wires with hooked ends between
the rotor shaft and the stationary element and pull
the stationary element and seat out of the seal
plate.

NOTE

An alternate method of removing the stationary ele

PAGE E - 17MAINTENANCE AND REPAIR

SFV SERIES X‐PROOF PUMPSOM-06628

ment is to remove the screws securing the seal
plate to the motor assembly. Pry the assembled
seal plate and stationary element off the shoulder of
the intermediate. Remove the O‐ring and press the
stationary element and seat out of the seal plate
from the back side.

If no further disassembly is required, proceed to
the appropriate areas in PUMP END REASSEMB

LY.

Seal Removal (With Shaft Sleeve)

Carefully remove the spring retainer and seal
spring. Slide the shaft sleeve and rotating portion
of the seal off the shaft as a unit.

Apply oil to the sleeve and work it up under the rub
ber bellows. Slide the rotating portion of the seal off
the shaft sleeve.

Work a pair of stiff wires with hooked ends between
the rotor shaft and the stationary seat and pull the
stationary seat and O‐ring out of the seal plate.

NOTE

An alternate method of removing the stationary ele
ment is to remove the screws securing the seal
plate to the motor assembly. Pry the assembled
seal plate and stationary element off the shoulder of
the intermediate. Remove the O‐ring and press the
stationary element and seat out of the seal plate
from the back side.

Hardware Torque Values

When reassembling the pump, use the following
table to determine the proper torque values for
hardware.

Table E-1. Hardware Torque Values

TIGHTENING TORQUE

FASTENER

SIZE

M3 0.8 1,1 0.7 1,0
M4 1.9 2,6 1.2 1,7
M5 3.8 5,1 2.5 3,4
M6 6.5 8,8 52.2 4.3

M8 15.8 21,4 10.7 14,5
M10 32.4 44 22.1 30
M12 54.8 74 36.9 50
M14 87.8 119 58.3 79
M16 135.0 183 89.2 121
M20 273.0 370 180.0 244
M24 220.0 298 145.3 197
M30 421.0 571 276.0 374

Cleaning and Inspection of Pump Parts

With the pump inverted, stuff a clean tissue into the
stationary seal seat bore of the intermediate or
wrap a small rag around the shaft to prevent for
eign material from entering the motor cavity.

Carefully inspect any O‐rings before removal and
cleaning to determine if a proper seal existed prior
to disassembly. If sealing was faulty or question
able, the cause must be determined and corrected
before reassembly. Replace any parts as required.

DRY LUBRICATED

FT. LBS. NM

FT. LBS. NM

Remove the seal sleeve O‐ring from the rotor shaft.

Proceed to PUMP END REASSEMBLY.

PUMP END REASSEMBLY

NOTE

Reuse of old O‐rings or shaft seal parts will result in
premature leakage or reduced pump performance.
It is strongly recommended that new O‐rings and a
new shaft seal be used during reassembly (see the
parts lists for part numbers).

Thoroughly clean all reuseable parts with a soft
cloth soaked in cleaning solvent. Remove all O‐
rings and clean the sealing surfaces.

Most cleaning solvents are toxic and
flammable. Use them only in a well ven
tilated area free from excessive heat,
sparks, and flame. Read and follow all
precautions printed on solvent contain
ers.

Inspect the rotor shaft for damaged threads, scor
ing, or nicks. Remove nicks and burrs with a fine

MAINTENANCE AND REPAIRPAGE E - 18

OM-06628SFV SERIES X‐PROOF PUMPS

file or hand honing stone to restore original con
tours. If the shaft is bent or severely damaged, the
motor must be replaced.

The shaft seal assembly should not be reused be
cause wear patterns on the finished faces cannot
be realigned during reassembly. This could result
in premature failure.

Handle the seal parts with extreme care to prevent
damage. Be careful not to contaminate the preci
sion finished faces; even fingerprints on the faces

STATIONARY

SEAL SEAT

SHAFT SLEEVE

(IF USED)

BELLOWS AND

RETAINER ASSY

can shorten seal life. If necessary, clean the faces
with a non‐oil based solvent and a clean, lint‐free
tissue. Wipe lightly in a circular pattern to avoid
scratching the faces.

Inspect the seal components for wear, scoring,
grooves, and other damage that might cause leak
age. If any components are worn, replace the com
plete seal; never mix old and new seal parts.

Install the shaft seal as shown in the following illus
tration.

SHAFT SLEEVE

O‐RING (IF

USED)

SEAL PLATE

O‐RING

ROTATING

ELEMENT

SPRING

SHIM SET

Figure E-7. Typical Lower Seal Assembly

The seal assembly is not designed for op
eration at temperatures above 104_F
(40_C). Do not use at higher operating
temperatures.

Seal Installation (With Shaft Sleeve)

Thoroughly clean the O‐ring surfaces and seal
bore of the seal plate. The seal bore must be free of
burrs and nicks which could damage the seal. In
spect the seal plate for cracks, distortion, or ero
sion and replace it if defective.

Lubricate the seal sleeve O‐ring with light oil and
slide it onto the rotor shaft until it is seated against

SPRING

RETAINER

IMPELLER

the shaft shoulder. Use caution not to nick or dam
age the O‐ring on the shaft keyway.

Position the seal plate on a clean flat surface with
the impeller side up.

Unpack the seal stationary seat and O‐ring. Apply
a light coating of oil to the seal plate bore and the
O.D. of the stationary seat O‐ring. Keep the sealing
face dry.

Position the stationary seat and O‐ring in the seal
plate bore with the sealing face up and cover the
seal face with a clean tissue. Use your thumbs to
press the assembly into the bore. Apply equal
pressure on opposite sides until the seat contacts
the bore shoulder. Remove the tissue and inspect
the seal face to ensure that it is clean and dry. If
cleaning is necessary, use clean tissue to wipe

lightly in a circular pattern.

PAGE E - 19MAINTENANCE AND REPAIR

SFV SERIES X‐PROOF PUMPSOM-06628

NOTE

If the seal plate was not removed during disassem
bly, cover the stationary element with a clean tissue
and use your thumbs to press the seal stationary
seat and O‐ring into the seal plate as described
above. Remove the tissue and inspect the seal face
to ensure that it is clean and dry.

Install a new O‐ring on the shoulder of the interme
diate.

Carefully position the seal plate and stationary seal
components on the rotor shaft. Align the holes in
the seal plate for the capscrews with those in the
intermediate and slide the seal plate onto the shaft
until fully seated against the intermediate. Be care
ful not to damage the stationary seat already
installed in the seal plate. Secure the seal plate to
the intermediate with the flat head capscrews.

Unpack the rotating portion of the seal. Be certain
the seal face of the rotating element is free of grit or
surface damage. Because the rotating element
may not stay in the bellows retainer when turned
upside down, place a small amount of grease at
equal spaces on the back of the element and posi
tion it in the bellows retainer. The grease should
hold the element in position until the seal is in
stalled. Assemble the drive grooves of the rotating
element into the drive lugs of the bellows retainer.

Lubricate the I.D. of the bellows with water and
slide the rotating subassembly over the shaft
sleeve until the seal face is just flush with the under
cut end of the sleeve.

Slide the assembled shaft sleeve and rotating por
tion of the seal and onto the rotor shaft until the pol
ished faces contact. Continue to push the sleeve
through the seal until it is fully seated against the
shaft shoulder.

spect the seal plate for cracks, distortion, or ero
sion and replace it if defective.

Position the seal plate on a clean flat surface with
the impeller side up.

Unpack the stationary seat and element. Subas
semble the stationary element in the stationary
seat. Apply a light coating of oil to the seal plate
bore and the O.D. of the seal stationary seat. Keep
the sealing face dry.

Position the subassembly in the seal plate bore,
and cover it with a clean tissue. Use your thumbs to
press the seat into the bore. Apply equal pressure
on opposite sides of the seat until it is fully seated in
the bore. Remove the tissue and inspect the seal
face to ensure that it is clean and dry. If cleaning is
necessary, use clean tissue to wipe lightly in a cir
cular pattern.

Install a new O‐ring on the shoulder of the interme
diate.

Carefully position the seal plate and stationary seal
components on the rotor shaft. Align the holes in
the seal plate for the flat head capscrews with
those in the intermediate and slide the seal plate
onto the shaft until fully seated against the inter
mediate. Be careful not to damage the stationary
element already installed in the seal plate. Secure
the seal plate to the intermediate by torquing the
flat head capscrews to the value shown in Table
E-1.

NOTE

If the seal plate was not removed during disassem
bly, cover the stationary element with a clean tissue
and use your thumbs to press the seal stationary
seat and element into the seal plate as described
above. Remove the tissue and inspect the seal face
to ensure that it is clean and dry.

Install the seal spring over the bellows retainer and
install the spring retainer. See Figure E-3 for prop
er order of seal assembly.

Seal Installation (No Shaft Sleeve)

Thoroughly clean the O‐ring surfaces and seal
bore of the seal plate. The seal bore must be free of
burrs and nicks which could damage the seal. In

Unpack the rotating portion of the seal. Be certain
the seal face of the rotating element is free of grit or
surface damage. Because the rotating element
may not stay in the bellows retainer when turned
upside down, place a small amount of grease at
equal spaces on the back of the element and posi
tion it in the bellows retainer. The grease should
hold the element in position until the seal is in
stalled. Assemble the drive grooves of the rotating
element into the drive lugs of the bellows retainer.

MAINTENANCE AND REPAIRPAGE E - 20

OM-06628SFV SERIES X‐PROOF PUMPS

Apply a light coating of oil on the shaft and the I.D.
of the bellows.

NOTE

When pressing seal components onto the rotor
shaft, use hand pressure only. A push tube cut from
a length of plastic pipe will aid in installing seal
components. The I.D. of the push tube should be
approximately the same as the I.D. of the seal
spring.

Slide the seal rotating portion onto the lubricated
shaft with the seal face down. Apply firm, steady
pressure on the bellows retainer until it slides down
the shaft and the seal faces contact.

Install the seal spring over the bellows retainer and
install the spring retainer. See Figure E-3 for prop
er order of seal assembly.

Impeller Installation

Inspect the impeller for cracks, broken vanes, or
wear from erosion and replace it if damaged. Clean
the threads on the rotor shaft for the impeller nut.

Pump Casing Installation

Install a new O‐ring on the shoulder of the seal
plate. Slide the pump casing over the seal plate
shoulder until fully seated. Apply “Never‐Seez” or
equivalent compound to the capscrews and se
cure the pump casing to the seal plate and motor
assembly with the previously removed hardware.
Torque the capscrews to the value shown in Table
E-1.

Final Assembly

If the pump is designed for guide a rail application
and guide shoe was removed for disassembly,
install a new guide shoe seal and secure the seal
and guide shoe to the pump casing with the pre
viously removed hardware.

If the pump is designed for a stand application, se
cure the pump to the stand with the previously re
move hardware.

Use a suitable lifting device to reposition the pump
in the wet well or sump.

LUBRICATION

Install the same thickness of adjusting shims as
previously removed. Install the impeller key in the
rotor shaft keyway. Align the keyway in the impeller
with the shaft key and push the impeller onto the
shaft until seated firmly against the impeller shim
set.

A clearance of .020 to .040 inch (0,51 to 1,02 mm)
between the impeller and the seal plate is recom
mended for maximum pump efficiency. Measure
this clearance and add or remove impeller adjust
ing shims as required.

After the impeller is installed, coat the threads of
the rotor/shaft or impeller capscrew with `Loctite
Threadlocker No. 242' or equivalent compound.
Install the impeller washer. Wedge a soft metal bar
between the vanes of the impeller or use a strap
wrench to prevent shaft rotation. Torque the im
peller nut or capscrew to the value shown in Table
E-1.

Remove the metal bar or strap wrench used to pre
vent shaft rotation and turn the impeller to check for
free rotation.

Seal Cavity

Before installing or removing the lubrica
tion plugs, always make sure the pump is
completely cool, and clean the area
around the plugs to prevent contamination
of the oil.

Check the oil level in the seal cavity before initial
startup, after the first two weeks of operation, and
every month thereafter.

Check the oil level only when the pump
is cool. If the oil level plug is removed
when the pump is hot, pressure in the
seal cavity can cause hot oil to be
ejected as the plug is removed.

PAGE E - 21MAINTENANCE AND REPAIR

SFV SERIES X‐PROOF PUMPSOM-06628

Remove the lubrication plugs as indicated in
Draining Oil. Position the pump upright and add
premium quality submersible pump oil through
one of the plug holes until the oil reaches the bot
tom of the plug hole. Clean and re‐install the plugs.

Table E-2. Pump Oil Specifications

Specifications:

Type Premium high viscosity index, anti‐wear hydraulic oil..............................

Viscosity @ 100_F (38_C) 110 to 155...............................................

Viscosity @ 210_F (99_C) 40 to 50..................................................

Dielectric 26,000 (volts‐min)........................................................

Recommended supplier:

Gulf Oil Company Gulf Harmony HVI AW 26..........................................

Acceptable alternate suppliers:

Gulf Oil Company Gulf Harmony 32 AW..............................................

Texas Oil Company Rando HD 32 or HD AZ 32........................................

Sun Oil Company Sunvis 816 or 916.................................................

British Petroleum Oil Company Energol‐HLP 32........................................

Shell Oil Company Tellus 32, Tellus T‐23 or T32.......................................

ARCO Duro 32...................................................................

Exxon Nuto H 32...................................................................

The grade of lubricant used is critical to the opera
tion of this pump. Use premium quality hydraulic oil
as specified in Table E-2.

MAINTENANCE AND REPAIRPAGE E - 22

For U.S. and International Warranty Information,

Please Visit www.grpumps.com/warranty

or call:

U.S.: 419-755-1280

International: [phone]

For Canadian Warranty Information,

Please Visit www.grcanada.com/warranty

or call:

519-631-2870

THE GORMAN‐RUPP COMPANY D MANSFIELD, OHIO

GORMAN‐RUPP OF CANADA LIMITED D ST. THOMAS, ONTARIO, CANADA