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: (419) 755-1011
or:
Gorman‐Rupp of Canada Limited
70 Burwell Road
St. Thomas, Ontario N5P 3R7
Phone: (519) 631-2870
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
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