GORMAN-RUPP SFV Series Installation and operating instructions

PUBLICATION NUMBER
OM-06628-01
April 2, 2013
Rev. F 10-31-18
GORMAN‐RUPP PUMPS
www.grpumps.com
e2016 Gorman‐Rupp Pumps Printed in U.S.A.
SFV & SFEV SERIES
EXPLOSION‐PROOF PUMPS

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....................................
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...................................................

TABLE OF CONTENTS
(continued)
ii
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............................................................

OM-06628 SFV & SFEV SERIES X‐PROOF PUMPS
PAGE I - 1INTRODUCTION
INTRODUCTION
Thank You for purchasing a Gorman‐Rupp SFV/
SFEV 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.

OM-06628SFV SERIES X‐PROOF PUMPS
PAGE I - 2 INTRODUCTION
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.

SFV & SFEV SERIES X‐PROOF PUMPS OM-06628
PAGE A - 1SAFETY
SAFETY - SECTION A
The following information applies
throughout this manual to Gor
man‐Rupp SFV & SFEV Series explo
sion‐proof submersible pumps.
In addition to this manual, see the sepa
rate literature covering the control box,
control accessories or other equipment
shipped with this pump.
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.
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.
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.
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.
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
Gorman‐Rupp approved control box
which provides overload protection and
power control; otherwise, the pump
warranty will be voided. Make certain

OM-06628 SFV & SFEV SERIES X‐PROOF PUMPS
PAGE A - 2 SAFETY
that the pump and control box are prop
erly grounded and that the incoming
power matches the requirements of the
pump and controls. Install and operate
the control box in accordance with the
National Electric Code and all local
codes. Failure to follow the instructions
in this warning could result in injury or
death to personnel.
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.
The following precautions should be
taken before attempting to open or ser
vice the pump; otherwise, injury or
death could result.
1. Familiarize yourself with this man
ual.
2. Lock out incoming power to the
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).
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. Do not attempt to lift this
pump by the motor or control cables, or
the piping. Attach proper lifting equip
ment to the lifting bail fitted on the
pump. Discharge hoses and piping
must be removed from the pump before
lifting. Lift the pump only as high as ne
cessary and keep personnel away from
suspended objects.
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.
The electrical power used to operate
this pump is high enough to cause inju
ry or death. Obtain the services of a
qualified electrician to make all electri
cal connections. Make certain that the
pump and enclosure are properly
grounded; never use gas pipe as an
electrical ground. Be sure that the in
coming power matches the voltage and
phase of the pump and control before
connecting the power source. Do not
run the pump if the voltage is not within
the limits. If the overload unit is tripped
during pump operation, correct the
problem before restarting the pump.

SFV & SFEV SERIES X‐PROOF PUMPS OM-06628
SAFETY PAGE A - 3
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
position and locked out, or that the pow
er 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.
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. Injury or death may
result from alterations.
All electrical connections must be in ac
cordance with The National Electric
Code and all local codes. If there is a
conflict between the instructions pro
vided and N.E.C. Specifications, N.E.C.
Specifications shall take precedence.
All electrical equipment supplied with
this pump was in conformance with
N.E.C. requirements in effect on the
date of manufacture. Failure to follow
applicable specifications, or substitu
tion of electrical parts not supplied or
approved by the manufacturer, can re
sult in severe injury or death and void
warranty.
After the pump has been installed, make
certain that the pump and all piping or
hose connections are secure before op
eration.
Approach the pump cautiously after it
has been running. Although the motor is
cooled by dispersing heat through the
motor housing cooling fins into the liq
uid being pumped, normal operating
temperatures can still be high enough
to cause burns. The temperature will be
especially high if operated against a
closed discharge valve. Never operate
against a closed discharge valve for
long periods of time.
Do not remove plates, covers, gauges,
pipe plugs, or fittings from an over
heated pump. Vapor pressure within the
pump can cause parts being disen
gaged to be ejected with great force. Al
low the pump to completely cool before
servicing.
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.
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

OM-06628 SFV & SFEV SERIES X‐PROOF PUMPS
PAGE A - 4 SAFETY
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.
Pumps and related equipment must be
installed and operated according to all na
tional, local and industry standards.

OM-06628 SFV & SFEV SERIES X‐PROOF PUMPS
PAGE B - 1INSTALLATION
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.

SFV & SFEV SERIES X‐PROOF PUMPS OM-06628
PAGE B - 2 INSTALLATION
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

OM-06628 SFV & SFEV SERIES X‐PROOF PUMPS
PAGE B - 3INSTALLATION
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

SFV & SFEV SERIES X‐PROOF PUMPS OM-06628
PAGE B - 4 INSTALLATION
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.
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
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)
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

OM-06628 SFV & SFEV SERIES X‐PROOF PUMPS
PAGE B - 5INSTALLATION
able at the motor must be within the range indi
cated in Table B‐2.
Table B‐2. Pump Voltage Requirements
NOMINAL
VOLTAGE
3
3
230
460
207
414
253
506
PHASE
MINIMUM
VOLTAGE
MAXIMUM
VOLTAGE
3208 187 229
1230 207 253
3575 517 632
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
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

SFV & SFEV SERIES X‐PROOF PUMPS OM-06628
PAGE B - 6 INSTALLATION
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.
Figure B-1. Single Phase Power
Cable Connections
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 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
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).
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.
SDiaphragm 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.
SBulb (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

OM-06628 SFV & SFEV SERIES X‐PROOF PUMPS
PAGE B - 7INSTALLATION
starts per hour, it will over‐heat, resulting in
damage to the motor windings or control
box components.
PUMP
CONTROL BOX
LIQUID LEVEL
RANGE
ON (FILLING)
TO LEVEL CONTROL CIRCUIT
IN MAIN CONTROL
BOX
BULB (FLOAT TYPE)
OFF
DEWATERING
PUMP
CONTROL BOX
TO LEVEL CONTROL CIRCUIT
IN MAIN CONTROL
BOX
LIQUID LEVEL
RANGE
OFF
DEWATERING
ON (FILLING)
DIAPHRAGM TYPE
Figure B-4. Liquid Level Devices

OM-06628 SFV & SFEV SERIES X‐PROOF PUMPS
PAGE C - 1OPERATION
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.

SFV & SFEV SERIES X‐PROOF PUMPS OM-06628
PAGE C - 2 OPERATION
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.
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.
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
tempt to handle or service the pump un
less all power to the motor has been
shut off and locked out at the control
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
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
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 & SFEV SERIES X‐PROOF PUMPS
PAGE C - 3OPERATION
(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.
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.
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.
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.