GORMAN-RUPP JS Series User manual

PUBLICATION NUMBER
OM−03833
November 10, 1992
Rev. G 12-15-09
THE GORMAN-RUPP COMPANY DMANSFIELD, OHIO
www.grpumps.com
GORMAN-RUPP OF CANADA LIMITED DST. THOMAS, ONTARIO, CANADA Printed in U.S.A.
e1992 The Gorman-Rupp Company
JS AND JSV SERIES PUMPS
FM
APPROVED
X-PROOF MOTORS FOR CLASS 1,
DIV. 1, GROUPS C & D LOCATIONS

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:

OM−03833 JS AND JSV SERIES PUMPS
FM
APPROVED
PAGE I − 1INTRODUCTION
INTRODUCTION
Thank You for purchasing a Gorman-Rupp JS or
JSV Series FM-Approved Pump. Read this manu-
al carefully to learn how to safely install and oper-
ate your pump. Failure to do so could result in per-
sonal injury or damage to the pump.
A set of three manuals accompanies your pump.
Each set consists of three parts; the Installation/
Operation Manual contains essential information
on installing and operating the pump, and on mak-
ing electrical connections. However, since pump
installations are seldom identical, some of the in-
formation only summarizes general recommenda-
tions and practices required to inspect, position,
and arrange the pump and piping.
The Parts List Manual provides performance
curve(s), a pump model cross-section drawing,
and parts list for your pump.
The Maintenance and Repair Manual provides
troubleshooting and maintenance instructions re-
quired to properly diagnose operational problems,
and to service the pump hydraulic components.
Pump motor maintenance may be performed only
by a Gorman-Rupp authorized repair facility, or the
factory. Otherwise, the pump warranty will be ne-
gated, 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 pump is driven by an explosion-proof, sub-
mersible electric motor, FM-approved for Class 1,
Division 1, Group C and D locations. If the motor is
dual-voltage, the pump is shipped from the factory
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 be approved by Gorman-Rupp for the appli-
cation and environment intended, and must also
provide for proper operation of the motor protec-
tion 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 are 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 op-
tional 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
CONTENTS
SAFETY − SECTION A
INSTALLATION − SECTION B
GENERAL INFORMATION PAGE B − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PREINSTALLATION INSPECTION PAGE B − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LUBRICATION PAGE B − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MOTOR SPECIFICATIONS PAGE B − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PUMP INSTALLATION PAGE B − 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ELECTRICAL CONNECTIONS PAGE B − 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
WIRING DIAGRAMS PAGE B − 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OPERATION − SECTION C
GENERAL INFORMATION PAGE C − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PUMP OPERATION PAGE C − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
STARTING, STOPPING, AND OPERATIONAL CHECKS PAGE C − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . .
COLD WEATHER PRESERVATION PAGE C − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LUBRICATION PAGE C − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

OM−03833JS AND JSV SERIES PUMPS
FM
APPROVED
PAGE I − 2 INTRODUCTION
RECORDING MODEL AND
SERIAL NUMBERS
Please record the pump model, serial number, volt-
age, and motor frame size in the spaces provided
below. Your Gorman-Rupp distributor needs this
information when you require parts or service.
Pump Model:
Serial Number:
Voltage:
Motor Frame Size:
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.
The motor powering this pump is FM-Approved for
Class 1, Division 1, Groups C and D environments.
All repairs to the pump, other than seal, impeller
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 FM Approval and the motor
warranty.
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.

OM−03833 JS AND JSV SERIES PUMPS
FM
APPROVED
PAGE A − 1SAFETY
SAFETY − SECTION A
The following information applies
throughout this manual to Gorman-
Rupp JS and JSV Series 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 FM-
Approved for Class 1, Division 1,
Groups C and D environments. Any liq-
uid level devices used with the pump
must be intrinsically safe for use in
these environments.
Any control box used to operate the
pump must be approved by the Gor-
man-Rupp Company 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
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 these could re-
sult in injury or death to personnel.
This pump is not designed to pump vol-

JS AND JSV SERIES PUMPS OM−03833
FM
APPROVED
PAGE A−2 SAFETY
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 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.
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.
If this 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 FM-Ap-
proved for Class 1, Division 1, Groups C
and D environments. All repairs to the
pump, other than seal, impeller and other
hydraulic components, must be per-
formed by a Gorman-Rupp authorized re-
pair facility or the factory. Any repairs to the
motor assembly performed by the custom-
er or an unauthorized repair facility ne-
gates the FM Approval and the motor war-
ranty.
After the pump has been installed, make
certain that the pump and all piping or hose

OM−03833 JS AND JSV SERIES PUMPS
FM
APPROVED
PAGE A − 3SAFETY
connections are secure before operation.
Loose connections can result in damage to
equipment and serious injury to personnel.

OM−03833 JS AND JSV SERIES PUMPS
FM
APPROVED
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).
Pump Model Designation
Following is a description of the model numbering
system for J Series pumps. These explosion-proof
submersible pumps are available in a range of
seven motor frame sizes. Refer to Table 1 to identify
the motor frame size for your specific pump model.
JSV
Series
Discharge Size
Pump Hydraulics
Seal Construction
Motor Type (X-Proof)
H.P.
Voltage/Phase
3 F 60 X 230/3− 6.2
Pump Model
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
Some of the pumps in this series are equipped with
double mechanical seals. Others are equipped
with two separate seals. In either case, the function
of the seal(s) are the same.
The seal(s) 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 pump seal(s) are lubricated by oil in the seal
housing (see LUBRICATION at the end of this
manual).
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; Class
F Insulation Rated 155_C (311_F), 40_C (104_F)
ambient, plus 115_C (239_F) temperature rise.
The motor is FM-approved for Class 1, Division 1,
Group C and D locations.
See Table B-1 for motor specifications for each
motor frame size.

JS AND JSV SERIES PUMPS OM−03833
FM
APPROVED
PAGE B − 2 INSTALLATION
Table B-1. Pump Motor Specifications
JSV 3 A 230/1 1 1750 4.1 11.9 39.3
JSV 3 B 230/1 1 1750 4.1 11.9 39.3
JSV 3 C 230/1 1 1750 4.1 11.9 39.3
JSV 3 A 200/3 1 1750 5.5 10.5 64.2
JSV 3 A 230/3 1 1750 4.8 9.1 56.4
JSV 3 A 460/3 1 1750 2.4 4.5 27.9
JSV 3 A 575/3 1 1750 1.9 3.6 11.8
JSV 3 B 200/3 1 1750 5.5 10.5 64.2
JSV 3 B 230/3 1 1750 4.8 9.1 56.4
JSV 3 B 460/3 1 1750 2.4 4.5 27.9
JSV 3 B 575/3 1 1750 1.9 3.6 11.8
JSV 3 C 200/3 1 1750 5.5 10.5 64.2
JSV 3 C 230/3 1 1750 4.8 9.1 56.4
JSV 3 C 460/3 1 1750 2.4 4.5 27.9
JSV 3 C 575/3 1 1750 1.9 3.6 11.8
JSV 3 D 200/3 1 1750 6.0 14.3 52.9
JSV 3 D 230/3 1 1750 5.4 13.0 48,1
JSV 3 D 460/3 1 1750 2.6 6.2 22.9
JSV 3 D 575/3 1 1750 2.1 5.0 18.5
JSV 3 E 200 2 1750 9.0 15.3 110.2
JSV 3 E 230 2 1750 7.7 13.3 95.8
JSV 3 E 460 2 1750 3.9 6.6 47.9
JSV 3 E 575 2 1750 3.1 5.3 38.3
JSV 3 G 200 2 1750 9.0 15.3 110.2
JSV 3 G 230 2 1750 7.7 13.3 95.8
JSV 3 G 460 2 1740 3.9 6.6 47.9
JSV 3 G 575 2 1750 3.1 5.3 38.3
JSV 3 M 200 2 3450 5.8 19.9 133.3
JSV 3 M 230 2 3450 5.0 17.3 115.9
JSV 3 M 460 2 3450 2.5 8.7 58.3
JSV 3 M 575 2 3450 2.0 6.9 46.2
JSV 3 F 200/3 2 1750 8.9 21.3 110.8
JSV 3 F 230/3 2 1750 7.7 18.6 96.7
JSV 3 F 460/3 2 1750 3.9 9.3 48.4
JSV 3 F 575/3 2 1750 3.1 7.4 38.5
JSV 3 G 200/3 2 1750 8.9 21.3 110.8
JSV 3 G 230/3 2 1750 7.7 18.6 96.7
JSV 3 G 460/3 2 1750 3.9 9.3 48.4
JSV 3 G 575/3 2 1750 3.1 7.4 38.5
JS 4 A 200/3 2 1750 8.9 21.3 110.8
JS 4 A 230/3 2 1750 7.7 18.6 96.7
JS 4 A 460/3 2 1750 3.9 9.3 48.4
JS 4 A 575/3 2 1750 3.1 7.4 38.5
JS 4 B 200/3 2 1750 8.9 21.3 110.8
JS 4 B 230/3 2 1750 7.7 18.6 96.7
JS 4 B 460/3 2 1750 3.9 9.3 48.4
JS 4 B 575/3 2 1750 3.1 7.4 38.5
PUMP
HYDRAULIC
DESIGNATION
MAX
LOAD
AMPS
VOLTAGE/
PHASE
MOTOR
FRAME
SIZE
MOTOR
RPM
NO
LOAD
AMPS
LOCKED
ROTOR
AMPS
PUMP
SERIES
DISCH.
SIZE

OM−03833 JS AND JSV SERIES PUMPS
FM
APPROVED
PAGE B − 3INSTALLATION
Table B-1. Pump Motor Specifications (cont’d)
JS 4 C 200/3 2 1750 8.9 21.3 110.8
JS 4 C 230/3 2 1750 7.7 18.6 96.7
JS 4 C 460/3 2 1750 3.9 9.3 48.4
JS 4 C 575/3 2 1750 3.1 7.4 38.5
JS 4 Z 200 2 1750 5.8 19.9 133.3
JS 4 Z 230 2 1750 5.0 17.3 115.9
JS 4 Z 460 2 1750 2.5 8.7 58.3
JS 4 Z 575 2 1750 2.0 6.9 46.2
JS 4 AA 200 2 1750 8.9 21.3 110.8
JS 4 AA 230 2 1750 7.7 18.6 96.7
JS 4 AA 460 2 1750 3.9 9.3 48.4
JS 4 AA 575 2 1750 3.1 7.4 38.5
JSV 4 C 200/3 2 3450 5.8 19.9 133.3
JSV 4 C 230/3 2 3450 5.0 17.3 115.9
JSV 4 C 460/3 2 3450 2.5 8.7 58.3
JSV 4 C 575/3 2 3450 2.0 6.9 46.2
JSV 3 K 200 4 3450 16.1 43.7 425.5
JSV 3 K 230 4 3450 14.0 38.0 370.0
JSV 3 K 460 4 3450 7.0 19.0 185.0
JSV 3 K 575 4 3450 5.6 15.2 148.0
JSV 3 L 200 4 3450 16.1 52.9 425.5
JSV 3 L 230 4 3450 14.0 46.0 370.0
JSV 3 L 460 4 3450 7.0 23.0 185.0
JSV 3 L 575 4 3450 5.6 18.4 148.0
JS 4 D 200/3 4 1750 20.0 43.9 196.0
JS 4 D 230/3 4 1750 17.4 38.2 170.5
JSV 4 D 460/3 4 3450 8.7 19.1 85.3
JSV 4 D 575/3 4 3450 7.0 15.3 68.6
JSV 4 E 200/3 4 3450 20.0 51.3 430.9
JSV 4 E 230/3 4 3450 18.2 46.6 391.4
JSV 4 E 460/3 4 3450 8.7 22.3 187.3
JSV 4 E 575/3 4 3450 7.0 17.8 149.5
JS 4 F 200/3 4 1750 26.9 42.5 293.3
JS 4 F 230/3 4 1750 24.5 38.7 267.0
JS 4 F 460/3 4 1750 11.7 18.5 127.6
JS 4 F 575/3 4 1750 9.4 14.8 102.1
JS 4 K 200/3 4 1750 26.9 52.7 395.2
JS 4 K 230/3 4 1750 24.5 47.9 359.2
JS 4 K 460/3 4 1750 11.7 22.9 171.7
JS 4 K 575/3 4 1750 9.4 18.3 138.0
JS 6 A 200/3 4 1750 24.6 42.5 293.2
JS 6 A 230/3 4 1750 22.4 38.7 267.0
JS 6 A 460/3 4 1750 10.7 18.5 127.6
JS 6 A 575/3 4 1750 8.6 14.8 102.1
JS 6 L 200/3 4 1750 24.6 52.7 395.2
JS 6 L 230/3 4 1750 22.4 47.9 359.2
JS 6 L 460/3 4 1750 10.7 22.9 171.7
JS 6 L 575/3 4 1750 8.6 18.3 137.2
PUMP
HYDRAULIC
DESIGNATION
MAX
LOAD
AMPS
VOLTAGE/
PHASE
MOTOR
FRAME
SIZE
MOTOR
RPM
NO
LOAD
AMPS
LOCKED
ROTOR
AMPS
PUMP
SERIES
DISCH.
SIZE

JS AND JSV SERIES PUMPS OM−03833
FM
APPROVED
PAGE B − 4 INSTALLATION
Table B-1. Pump Motor Specifications (cont’d)
JS 4 H 200/3 5 1750 48.5 74.1 363.1
JS 4 H 230/3 5 1750 44.1 67.3 329.8
JS 4 H 460/3 5 1750 21.1 32.2 157.8
JS 4 H 575/3 5 1750 16.9 25.8 126.4
JS 4 J 200/3 5 1750 42.5 83.0 481.4
JS 4 J 230/3 5 1750 38.7 75.5 437.9
JS 4 J 460/3 5 1750 18.5 36.1 209.4
JS 4 J 575/3 5 1750 14.8 28.9 167.6
JS 6 C 200/3 5 1750 48.5 74.1 363.1
JS 6 C 230/3 5 1750 44.1 67.3 329.8
JS 6 C 460/3 5 1750 21.1 32.2 157.8
JS 6 C 575/3 5 1750 16.9 25.8 126.4
JS 6 D 200/3 5 1750 42.5 83.0 481.4
JS 6 D 230/3 5 1750 38.7 75.5 437.9
JS 6 D 460/3 5 1750 18.5 36.1 209.4
JS 6 D 575/3 5 1750 14.8 28.9 167.6
JS 8 B 200/3 5 1750 48.5 74.1 363.1
JS 8 B 230/3 5 1750 44.1 67.3 329.8
JS 8 B 460/3 5 1750 21.1 32.2 157.8
JS 8 B 575/3 5 1750 16.9 25.8 126.4
JS 8 C 200/3 5 1750 42.5 83.0 481.4
JS 8 C 230/3 5 1750 38.7 75.5 437.9
JS 8 C 460/3 5 1750 18.5 36.1 209.4
JS 8 C 575/3 5 1750 14.8 28.9 167.6
JS 6 E 230/3 6 1750 40.6 87.4 594.3
JS 6 E 460/3 6 1750 19.4 41.8 284.2
JS 6 E 575/3 6 1750 15.5 33.4 227.1
JS 6 F 230/3 6 1750 40.6 109.1 589.1
JS 6 F 460/3 6 1750 19.4 52.2 281.9
JS 6 F 575/3 6 1750 15.5 41.8 225.7
JS 6 G 230/3 6 1750 40.6 109.1 589.1
JS 6 G 460/3 6 1750 19.4 52.4 281.9
JS 6 G 575/3 6 1750 15.5 41.8 225.7
JS 8 D 230/3 6 1750 40.6 109.1 489.1
JS 8 D 460/3 6 1750 19.4 52.2 281.9
JS 8 D 575/3 6 1750 15.5 41.8 225.7
JS 8 E 230/3 6 1750 40.6 109.1 589.1
JS 8 E 460/3 6 1750 19.4 52.2 281.9
JS 8 E 575/3 6 1750 15.5 41.8 225.7
JS 6 H 460/3 7 1750 36.3 73.0 554.8
JS 6 H 575/3 7 1750 29.0 58.4 443.8
JS 6 J 460/3 7 1750 36.3 73.0 554.8
JS 6 J 575/3 7 1750 29.0 58.4 443.8
JS 6 K 460/3 7 1750 36.3 84.7 542.1
JS 6 K 575/3 7 1750 29.0 67.8 433.9
JS 6 M 460/3 7 1750 85.0
JS 6 M 575/3 7 1750 68.0
MOTOR
FRAME
SIZE
PUMP
HYDRAULIC
DESIGNATION
MAX
LOAD
AMPS
VOLTAGE/
PHASE
MOTOR
RPM
NO
LOAD
AMPS
LOCKED
ROTOR
AMPS
PUMP
SERIES
DISCH.
SIZE

OM−03833 JS AND JSV SERIES PUMPS
FM
APPROVED
PAGE B − 5INSTALLATION
Table B-1. Pump Motor Specifications (cont’d)
JS 8 H 460/3 7 1750 36.3 73.0 554.8
JS 8 H 575/3 7 1750 29.0 58.4 443.8
JS 8 J 460/3 7 1750 85.0
JS 8 J 575/3 7 1750 68.0
JS 8 AA 460/3 8 1750 121.0
JS 8 AA 575/3 8 1750 96.8
JS 8 AB 460/3 8 1750 121.0
JS 8 AB 575/3 8 1750 96.8
JS 12 AA 460/3 8 870 60.0
JS 12 AA 575/3 8 870 48.0
JS 12 AB 460/3 8 870 74.5
JS 12 AB 575/3 8 870 59.6
JS 8 AC 460/3 9 1750 147.1
JS 8 AC 575/3 9 1750 117.7
JS 8 AD 460/3 9 1750 147.1
JS 8 AD 575/3 9 1750 117.7
JS 8 AE 460/3 9 1750 64.0 183.0 1372.5
JS 8 AF 575/3 9 1750 52.4 146.4 1098.0
JS 8 AG 460/3 9 1750 246.0
JS 8 AG 575/3 9 1750 197.0
JS 10 AA 460/3 9 870 91.7
JS 10 AA 575/3 9 870 73.4
JS 10 AB 460/3 9 870 120.0
JS 10 AB 575/3 9 870 96.0
JS 10 AC 460/3 9 1750 176.0
JS 10 AC 575/3 9 1750 140.8
JS 10 AD 460/3 9 1750 228.0
JS 10 AD 575/3 9 1750 182.4
JS 12 AC 460/3 9 870 33.0 98.0 548.8
JS 12 AC 575/3 9 870 26.4 78.4 439.0
JS 12 AD 460/3 9 870 107.0
JS 12 AD 575/3 9 870 96.0
JS 12 AE 460/3 9 1150 176.0
JS 12 AE 575/3 9 1150 140.8
JS 12 AF 460/3 9 1150 228.0
JS 12 AF 575/3 9 1150 182.4
MOTOR
FRAME
SIZE
PUMP
HYDRAULIC
DESIGNATION
MAX
LOAD
AMPS
VOLTAGE/
PHASE
MOTOR
RPM
NO
LOAD
AMPS
LOCKED
ROTOR
AMPS
PUMP
SERIES
DISCH.
SIZE
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.

JS AND JSV SERIES PUMPS OM−03833
FM
APPROVED
PAGE B − 6 INSTALLATION
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 in the Parts List
Manual when determining the most efficient piping
installation. The recommended maximum sub-
mergence depth is 65 feet.
Lifting
Pump unit weights will vary depending on the
mounting and drive provided. Check the shipping
tag on the unit packaging for the actual weight, and
use lifting equipment with appropriate capacity.
Drain the pump and remove all customer-installed
equipment such as suction and discharge hoses
or piping before attempting to lift existing, installed
units.
Positioning the Pump
NOTE
Before installing and operating the pump, check
the direction of impeller rotation to ensure that the
pump is properly wired at the control box. See IM-
PELLER ROTATION, Section C.
The pump is 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 theins-
tallation 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.
Piping
No suction piping is required in a standard installa-
tion.
The optional discharge elbow/baseplate is drilled
for connection to a discharge flange. Either hose
or rigid pipe may be used to make discharge con-
nections.
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.

OM−03833 JS AND JSV SERIES PUMPS
FM
APPROVED
PAGE B − 7INSTALLATION
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
Gorman-Rupp approved control box
which provides overload protection and
power control; otherwise, the pump
warranty will be voided. Make certain
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 these could re-
sult 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-
able at the motor must be within the range indi-
cated in Table B-3.
Table B-3. Pump Voltage Requirements
NOMINAL
VOLTAGE
3
3
230
460
210
420
250
500
PHASE
MINIMUM
VOLTAGE
MAXIMUM
VOLTAGE
3200 180 220
1230 220 240
3575 518 631
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.
Using a volt-ohm meter, connect one lead to the
motor cable green/yellow ground lead. Connect
the other lead to an uninsulated 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.
Conductor Identification
The conductors in the pump cable are labeled
when shipped from the factory. If the conductors
are shortened in the field, resulting in loss of identi-
fication markers, they can still be identified by their
location relative to the ground wire.
Refer to the wiring diagrams at the end of this sec-
tion; as seen from the free end of the cable, the
conductor immediately adjacent to and clockwise
from ground (green/yellow) is assigned number T1
(T4), the next clockwise conductor T2 (T5), etc.
If the conductors are re-labeled, they should be
identified with wire markers from the factory.

JS AND JSV SERIES PUMPS OM−03833
FM
APPROVED
PAGE B − 8 INSTALLATION
IEC to NEMA Cross-Reference
Refer to the following chart for IEC to NEMA mark-
ing cross-reference.
IEC TO NEMA MARKING
CROSS-REFERENCE
U1 = T1 U2 = T4
V1 = T2 V2 = T5
W1 = T3 W2 = T6
1 = P1
2 = P2
Control Box Connections
The motor powering this pump is FM-
Approved for Class 1, Division 1,
Groups C and D environments. Any liq-
uid level devices used with the pump
must be intrinsically safe for use in
these environments.
Any control box used to operate the
pump must be approved by the Gor-
man-Rupp Company 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.
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.
Refer to the appropriate wiring diagram at the end
of this section for your motor frame size, and wire
the motor to the control box.
NOTE
For reference, internal motor wiring connections
are also shown in the wiring diagrams at the end of
this section.
Control leads P1 and P2 provide the motor with
moisture and thermal protection. Note that thermal
protection is supplementary only; separate Class
10 overload relays are required for motor running
protection.
The thermal protection contacts in the mo-
tor will automatically reclose when the mo-
tor cools to the established safe operating
temperature. Whenever automatic restart-
ing is not desirable, connect only to con-
trols which are wired for manual restart.
Liquid Level Devices
This pump requires wet well liquid level de-
vices to guard against overheating by en-
suring that the pump motor is partially cov-
ered with liquid at all times. Install the liquid
level devices and connect them to the con-
trol box in accordance with the instructions
accompanying the 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 Fig-
ure B−1).
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.
SBulb (Float) Type: a bulb raises or lowers
(floats) with the liquid level, thus activating
an enclosed miniature switch.

OM−03833 JS AND JSV SERIES PUMPS
FM
APPROVED
PAGE B − 9INSTALLATION
SAir Bubbler System: an air pump injects air
into the wet well through an air bell. Liquid
rising above the air bell causes resistance to
air flow, increasing air pressure in the air line.
A transducer in the pressure switch senses
this pressure and provides a proportional
electrical signal to turn the pump(s) on and
off.
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 adjusted or
positioned to allow 6 minutes between
starts. If the pump motor cycles more than
10 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
AIR
LINE
PRESSURE
SWITCH
AIR
SUPPLY
WET
WELL
AIR BUBBLER SYSTEM
Figure B−1. Liquid Level Devices
Wiring Diagrams
Refer to the appropriate wiring diagram on the fol-
lowing pages when making electrical connections.

JS AND JSV SERIES PUMPS OM−03833
FM
APPROVED
PAGE B − 10 INSTALLATION
Figure B−2. Motor Frame Size 1 Wiring Diagram (230 Volt, Single Phase)

OM−03833 JS AND JSV SERIES PUMPS
FM
APPROVED
PAGE B − 11INSTALLATION
Figure B−3. Motor Frame Size 1 Wiring Diagram (200/575 Volt, Three Phase)

JS AND JSV SERIES PUMPS OM−03833
FM
APPROVED
PAGE B − 12 INSTALLATION
Figure B−4. Motor Frame Size 1 Wiring Diagrams (230/460 Volt, Three Phase)

OM−03833 JS AND JSV SERIES PUMPS
FM
APPROVED
PAGE B − 13INSTALLATION
Figure B−5. Motor Frame Size 2 Wiring Diagrams (230/460 Volt, Three Phase, Single Voltage)