GORMAN-RUPP PUMPS S Series Owner's manual

PUBLICATION NUMBER OM-04151
December 12, 1994
Rev. G 08‐09‐18
GORMAN‐RUPP PUMPS
www.grpumps.com
e1994 Gorman‐Rupp Pumps Printed in U.S.A.
S SERIES
SUBMERSIBLE PUMPS

OM-04151S SERIES PUMPS
PAGE I - 1INTRODUCTION
INTRODUCTION
Thank You for purchasing a Gorman‐Rupp S Se
ries Pump. Read this manual carefully to learn
how to safely install and operate your pump. Fail
ure to do so could result in personal injury or dam
age 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 integral electric motor must be operated
through the control box furnished with the pump as
standard equipment. If the motor is dual‐voltage,
the pump is shipped from the factory wired only for
the voltage shown on the nameplate. If desired to
have the voltage changed, return the pump to the
factory or to a Gorman‐Rupp authorized submers
ible repair facility.
The pump motor must be operated through an ap
propriate control box matching the voltage, phase
and other characteristics of the motor. The control
box must be approved by Gorman‐Rupp for the
application and environment intended, and must
also 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 may be aluminum with ductile
iron or steel wearing parts, or stainless steel fitted,
or completely stainless steel. The pump may be
operated fully or partially submerged. Neither the
pump nor the control box are explosion‐proof, and
should not be operated in a hazardous atmo
sphere.
Because pump installations are seldom identical,
this manual cannot possibly provide detailed in
structions and precautions for every aspect of
each specific application. Therefore, it is the re
sponsibility of the owner/installer of the pump to
ensure that applications not addressed in this
manual are performed only after establishing that
neither operator safety nor pump integrity are com
promised by the installation. Pumps and related
equipment must be installed and operated ac
cording to all national, local and industry stan
dards.
If there are any questions regarding the pump
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
or:
Gorman‐Rupp of Canada Limited
70 Burwell Road
St. Thomas, Ontario N5P 3R7
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 - 10........................................................

OM-04151 S SERIES PUMPS
PAGE I - 2 INTRODUCTION
ELECTRICAL CONNECTIONS PAGE B - 11.................................................
OPERATION - SECTION C
GENERAL INFORMATION PAGE C - 1.....................................................
PUMP OPERATION PAGE C - 1...........................................................
STARTING, STOPPING, AND OPERATIONAL CHECKS PAGE C - 3............................
COLD WEATHER PRESERVATION PAGE C - 4..............................................
LUBRICATION PAGE C - 4................................................................
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:
Phase:
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 following are used to alert personnel to procedures 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-04151 S SERIES PUMPS
PAGE A - 1SAFETY
SAFETY - SECTION A
This information applies to the S Series
submersible motor driven pumps and
control boxes.
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 open or service the
pump:
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.
5. Close the discharge valve (if
used).
This pump is not designed to pump vol
atile, explosive, or flammable materials.
Do not attempt to pump any liquids for
which you pump is not approved, or
which may damage the pump or endan
ger personnel as a result of pump fail
ure. Consult the factory for specific ap
plication data.
Before connecting any cable to the con
trol box, be sure to ground the control
box. Refer to the Control Box Manual for
the suggested grounding methods.
The pump motor is designed to be oper
ated through the control box furnished
with the pump. The control box provides
overload protection and power control.
Do not connect the pump motor directly
to the incoming power lines.
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.
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

S SERIES PUMPS OM-04151
PAGE A-2 SAFETY
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.
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.
After the pump has been installed, make
certain that the pump and all piping or
hose connections are secure before op
eration.
Obtain the services of a qualified elec
trician to troubleshoot, test and/or ser
vice the electrical components of this
pump.
Approach the pump cautiously after it
has been running. Although the motor is
cooled by the liquid being pumped, nor
mal operating temperatures can be high
enough to cause burns. The tempera
ture 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

OM-04151 S SERIES PUMPS
PAGE A - 3SAFETY
low the pump to completely cool before
servicing.
Do not attempt to lift the pump by the
motor power cable or the piping. Attach
proper lifting equipment to the lifting
device fitted to the pump. If chains or
cable are wrapped around the pump to
lift it, make certain that they are posi
tioned so as not to damage the pump,
and so that the load will be balanced.
Pumps and related equipment must be
installed and operated according to all na
tional, local and industry standards.

S SERIES PUMPS OM-04151
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.
Liquid level devices are available from Gorman‐
Rupp as optional equipment. For information on
installing and operating these items, refer to the lit
erature accompanying them.
Pump Model Designation
Following is a description of the model numbering
system for S Series pumps. These submersible
pumps are available in a range of sizes. Refer to the
following chart to identify the size for your specific
pump model.
S
Series
Discharge Size
Pump Hydraulics
Pump Construction
H.P. (If Shown)
Voltage/Phase
3 C 1 E 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.
PUMP SEAL
S Series pumps utilize one of the following sealing
methods.
1. There are two shaft seals in the pump. The
lower seal prevents liquid from entering the in
termediate cavity at the impeller end. The up
per seal prevents oil leakage from the motor
housing cavity and acts as back‐up protection
in the event of lower seal failure.
2. The pump is equipped with one double‐faced
seal assembly. It is designed to prevent the
liquid being pumped from entering the inter
mediate cavity at the impeller end, and to pre
vent moisture from entering the motor hous
ing cavity at the motor end.
Regardless of which sealing method is used, the
seal is lubricated by premium quality submersible
pump oil.
LUBRICATION
S series pumps are lubricated in one of the follow
ing methods.
1. Some pumps utilize two lubrication cavities.
The motor housing cavity provides lubrication
to the motor assembly and bearings, while the
intermediate cavity provides lubrication to the
pump seal.
2. Some pumps utilize one lubrication cavity, lo
cated just behind the seal plate. It is filled with
premium quality submersible pump oil which
lubricates the pump seal. The motor operates
in and is cooled by air, therefore it requires no
lubrication.
All S Series pumps are fully lubricated when
shipped from the factory. However, lubrication lev
els must be checked before installing the pump

OM-04151 S SERIES PUMPS
PAGE B - 2 INSTALLATION
(see LUBRICATION in the MAINTENANCE AND
REPAIR MANUAL). An additional quart (0,9 liter)
of oil is provided to “top off” the oil level in the pump
motor cavity, if so required. If the oil level is abnor
mally low, determine the cause before putting the
pump into service.
Due to differences in pump design, the quantity of
oil and manner in which oil is to be added to the
seal cavity varies between pump models. Refer to
Table B‐2 for oil capacities and positions for filling
the seal cavity in each pump. Motor cavities requir
ing lubrication should always be positioned verti
cally for filling. Refer to LUBRICATION, Section C
for lubrication specifications and intervals.
PUMP INSTALLATION
Pump Motor Specifications
See Table B‐1 for pump specifications.
Table B‐1. Pump Specifications
Dual
Voltage
Locked
Rotor
Amperes
Pump
HP/
KW
Motor
Speed
(RPM)
Full
Load
Amperes
No
Load
Amperes
Discharge
Size
(NPT)
Model Voltage/
Phase
S2A 115/1 NO 2 HP 3450 28
14
14
7
82
44 2 INCH
S2B
230/1
115/1
230/1
200/3
230/3
460/3
575/3
380/3
NO
YES
NO
YES
NO
NO
2 HP 3450
1.4 KW 2900
2 INCH
28
12
8.3
7.2
3.6
2.9
2.5
9
4.2
4.6
4
2
1.6
2
85
38
57.5
50
25
20
25
200/3
230/3
460/3
575/3
380/3
NO
YES
NO
NO
S2E
1.4 KW
3.5 HP 3450
2900
10.4
9.0
4.5
3.6
3.8
2 INCH
1.8
4
2
1.6
2
23
50
25
20
25
115/1
230/1
200/3
230/3
460/3
575/3
110/1
220/1
380/3
S2F
S3A
230/1
200/3
NO
NO
2 INCH
2 INCH
YES
YES
YES
NO
NO
NO
1 HP
1.1 KW
5 HP
2900
3450
3450
15
7.5
5
4.3
2.2
1.8
12
6
1.8
28
18
9.7
4.9
3.7
3.2
1.6
1.3
9.8
5.6
1.5
5
9
54
36
24
21
10.5
8.4
54
36
10.5
125
75

S SERIES PUMPS OM-04151
PAGE B - 3INSTALLATION
Table B‐1. Pump Specifications (continued)
Dual
Voltage
Locked
Rotor
Amperes
Pump
HP/
KW
Motor
Speed
(RPM)
Full
Load
Amperes
No
Load
Amperes
Discharge
Size
(NPT)
Model Voltage/
Phase
S3A
230/3 YES
5 HP 3450
16
8
8
4
65
35 3 INCH
S3B
460/3
575/3
380/3
230/1
200/3
230/3
460/3
575/3
NO
NO
NO
YES
NO
NO
6 HP 3450
4 KW 2900
3 INCH
6.5
5.4
34
26.5
23
11.5
9.2
3.2
3.5
8
13.8
12
6
4.8
28
35
95
115
100
50
40
380/3
230/1
200/3
230/3
460/3
NO
YES
NO
NO
S3C
6 HP 3450
2900
12.4
34
26.5
23
11.5 3 INCH
6
8
13.8
12
6
50
95
115
100
50
575/3
380/3
230/1
200/3
230/3
460/3
575/3
380/3
230/3
S3D
S4A
460/3
575/3 NO
3 INCH
4 INCH
NO
YES
NO
NO
NO
5 HP
3 KW
25 HP
2900
3450
1750
9.2
8
28
18
16
8
6.5
5.4
160
30
24
4.8
6
5
9
8
4
3.2
4
10
5
4
40
50
125
75
65
35
28
35
204
102
82
3 KW 2900
4 KW
NO
NO
380/3 12 KW 1450 21 5 102
230/3
S4B
460/3
575/3 NO 4 INCH
50 HP 1750
124
62
50
30
15
12
400
200
160
380/3 25 KW 1450 46 11 137
S4C
200/3
230/3
NO
YES
10 HP 3450 4 INCH
39
34
8
7
170
148

OM-04151 S SERIES PUMPS
PAGE B - 4 INSTALLATION
Table B‐1. Pump Specifications (continued)
Dual
Voltage
Locked
Rotor
Amperes
Pump
HP/
KW
Motor
Speed
(RPM)
Full
Load
Amperes
No
Load
Amperes
Discharge
Size
(NPT)
Model Voltage/
Phase
S4C YES 10 HP 3450 17 3.5 74
4 INCH
S4D
460/3
575/3
380/3
200/3
230/3
460/3
575/3
NO
NO
YES
NO
NO
10 HP 3450
6.7 KW 2900
4 INCH
13.6
11.5
39
34
17
13.6
2.8
3.5
8
7
3.5
2.8
60
74
170
148
74
60
380/3
460/3
575/3
460/3
575/3
NO
NO
NO
NO
S4F
30 HP 3450
11.5
26
20.8
38.5
30.8 4 INCH
3.5
4.4
3.5
7.5
6
74
170
136
213
170
200/3
230/3
460/3
575/3
380/3
460/3
575/3
460/3
575/3
S4H
S4K
230/3
460/3 NO
4 INCH
6 INCH
YES
NO
YES
NO
10 HP
15 HP
60 HP
2900
3450
1750
39
34
17
13.6
11.5
66
52.8
17
13.6
130
65
8
7
3.5
2.8
3.5
11
8.8
3.5
2.8
30
15
276
240
120
96
145
500
400
100
80
574
287
6.7 KW 2900
NO
575/3
26 KW 1450
52 12 230
380/3
S6A
230/3
460/3
NO
6 INCH
95 HP 1750
47
210
105
12
70
35
200
930
465
575/3
41 KW
84 28 372
S6B
380/3
500/3
1450 76
58
20
15
287
264
S4E 460/3
575/3
NO 20 HP 3450 26
20.8
4.4
3.5
170
136 4 INCH
20 HP 3450 4 INCH
S4G
6.7 KW
S4J 60 HP 3450 4 INCH
3450 4 INCH