GORMAN-RUPP PUMPS SM Series Owner's manual

PUBLICATION NUMBER
OM-04417
February 20, 1996
Rev. E 07‐24‐18
GORMAN‐RUPP PUMPS
www.grpumps.com
e1996 Gorman‐Rupp Pumps Printed in U.S.A.
SM SERIES
SUBMERSIBLE PUMPS

OM-04417 SM SERIES PUMPS
PAGE I - 1INTRODUCTION
INTRODUCTION
Thank You for purchasing a Gorman‐Rupp SM
Series 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.
The pump and control comply with MSHA sched
ule 2G regulations. Control boxes and other con
trol devices are not covered in this manual.
Pump construction may be aluminum or stainless
steel. The pump may be operated fully or partially
submerged, since the integral air‐filled electric mo
tor is thermally protected and cooled by the liquid
being pumped.
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.....................................................
GORMAN‐RUPP MSHA PUMP INSPECTION FORM PAGE B - 2...............................
PREINSTALLATION INSPECTION PAGE B - 3...............................................
LUBRICATION PAGE B - 3................................................................
PUMP SPECIFICATIONS PAGE B - 3......................................................
PUMP INSTALLATION PAGE B - 5.........................................................
PIPING PAGE B - 11.....................................................................
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................................................................

OM-04417SM SERIES PUMPS
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:
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.

SM SERIES OM-04417
PAGE A - 1SAFETY
SAFETY ‐ SECTION A
This information applies to SM 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 cool if over
heated.
4. Close the discharge valve (if
used).
The pump is designed to be operated
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 qu
alified electrician to make all electrical
connections. Make certain that the
pump and enclosure are properly
grounded. Be sure the incoming 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.
The electrical power used to operate
this pump is high enough to cause inju
ry or death. Make certain the control
handle on the control box is in the off po
sition and locked out, or the power sup
ply to the control box has been other
wise cut off and locked out, before at
tempting to open or service the pump
assembly. Tag electrical circuits to pre
vent accidental start‐up.
All electrical connections must be in ac
cordance with MSHA Schedule 2G. If
there is a conflict between the instruc
tions provided and MSHA specifica
tions, MSHA specifications shall take
precedence. All electrical equipment
supplied with this pump was in confor
mance with MSHA requirements in ef
fect on the date of manufacture. Failure
to follow applicable specifications, or
substitution of electrical parts not
supplied or approved by the manufac
turer, can result in severe injury or
death.
This pump is not designed to pump vol
atile, explosive, or flammable materials.

SM SERIESOM-04417
PAGE A - 2 SAFETY
Refer to the chart in Installation, Section
B for the basic materials of construction
for each pump covered in this manual.
Do not attempt to pump any liquids for
which your 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
application data.
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.
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 open the control box in an explo
sive atmosphere. When sealed, the con
trol box is explosion proof, to prevent
the ignition of combustible gases.
Opening the box in an explosive atmo
sphere could result in fire or explosion.
Pumps and related equipment must be in
stalled and operated according to all na
tional, local and industry standards.

OM-04417SM SERIES
PAGE B - 1INSTALLATION
INSTALLATION - SECTION B
Review all SAFETY information in Section A.
Since pump installations are seldom identical, this sec
tion is intended only to summarize recommended instal
lation practices for the pump and control box. If there are
any questions concerning your specific application, con
tact your Gorman‐Rupp distributor or the Gorman‐Rupp
Company
All functions performed by the customer on the pump or
control must be done in accordance with MSHA schedule
2G regulations to ensure the explosion‐proof integrity. No
alterations of original design may be made without the
consent of the Gorman‐Rupp Company and MSHA.
To retain “permissibility” of this equipment, the
following conditions shall be satisfied:
1. GENERAL SAFETY. Frequent inspection
shall be made. All electrical parts, including
the portable cable and wiring, shall be kept in
a safe condition. There shall be no openings
into the casings of the electrical parts. A per
missible distribution box shall be used for
connection to the power circuit unless con
nection is made in fresh intake air. The ma
chine frame shall be effectively grounded.
The power wires shall not be used for ground
ing. The incoming voltage must match the
voltage rating of the motor.
2. SERVICING. Explosion‐proof enclosures
shall be restored to the state of original safety
with respect to all flame arresting paths, lead
entrances, etc., following disassembly for re
pair or rebuilding, whether by the owner or an
independent shop.
3. FASTENING. All bolts, nuts, screws, and oth
er means of fastening, and also threaded cov
ers, shall be in place, properly tightened and
secured.
4. RENEWALS AND REPAIRS. Inspections, re
pairs, or renewals of electrical parts shall not
be made unless the portable cable is discon
nected from the circuit furnishing power, and
the cable shall not be connected again until all
parts are properly reassembled. Special care
shall be taken in making renewals or repairs.
Leave no parts off. Use replacement parts ex
actly like those furnished by the manufacturer.
When any lead entrance is disturbed, the
original leads or exact duplicates thereof shall
be used and stuffing boxes shall be repacked
in the approved manner.
5. CABLE REQUIREMENTS. A flame‐resistant
portable cable bearing a MSHA assigned
identification number, adequately protected
by an automatic circuit‐interrupting device,
shall be used. Special care shall be taken in
handling the cable to guard against mechani
cal injury and wear. Splices in portable cables
shall be made in a workmanlike manner, me
chanically strong, and well insulated. One
temporary splice may be made in any trailing
cable. Such trailing cable may only be used
for the next 24‐hour period. No temporary
splice shall be made in a trailing cable within
25 feet of the machine, except cable reel
equipment. Connections and wiring to the out
by end of the cable shall be in accordance
with recognized standards of safety.

OM-04417 SM SERIES
PAGE B - 2 INSTALLATION
GORMAN−RUPP MSHA PUMP INSPECTION FORM
INSPECTOR____________________________ DATE____________
MODEL NO.__________________________________SERIAL NO.____________
UNIT ELECTRICAL RATING:
H.P.________, VOLTS________, PUMP AMPS________, HERTZ________
STARTER X/P NO: XP3026−1 (CONTROL WITHOUT FLOAT)
OR
18−XPA040007−0 (CONTROL WITH FLOAT)
MOTOR CABLE:
___No. 12; 7 Conductor; Type SPC; .89 + .03 O.D.; Heavy Jacketed; Royal – MSHA 122;
___No. 8; 9 Conductor; Type SPC; 1.05 + .03 O.D.; Heavy Jacketed; Royal – MSHA 122;
___No. 6; 9 Conductor; Type SPC; 1.25 + .04 O.D.; Heavy Jacketed, Royal – MSHA 122;
Length______________________
ITEM AREA OF INSPECTION ACC. REJ. CORRECTED
1. Are lockwashers (or equivalent) provided for all explo-
sion proof enclosure fastenings?
2. Are all plane joints securely fastened so that a .005−inch
feeler gauge cannot be inserted?
3. Is motor plug secured with lock clip?
4. Are all electrical connections secure?
5. Are all electrical connections insulated where necessary
and per appropriate drawing?
6. Are packing glands properly packed so that 1/8−inch
clearance remains between packaging nut and stuffing
box?
7. Are packing nut and cable grip secured with lock wire and
lead seal?
8. Was pump leak tested?
9. Was pump and control electrically tested?
10. Was pump water tested?
11. Are pump, cable, and control assembled together properly
per appropriate drawing?
Comments:
NOTE: Fill out form completely and “rejections” must be corrected and re−inspected. Inspector must initial and date
when corrective action was taken. 10/9/87
Form CD GL−02128 Rev 6/05
Doc# 152708
This form not to be revised
without approval of MSHA.

OM-04417SM SERIES
PAGE B - 3INSTALLATION
Pump Model Designation
Following is a description of the model numbering system
for SM 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.
SM
Series
Discharge
Size
Pump
Hydraulics
Pump
Construction
H.P.
(If Shown)
Voltage/Phase
3 C 1 460/3- X6
Pump Model
Review all SAFETY information in Section A.
This section is intended only to summarize recom
mended installation practices for the pump and control
box. If there are any questions concerning your specific
application, contact your Gorman‐Rupp distributor or the
Gorman‐Rupp Company.
PREINSTALLATION INSPECTION
The pump and control box were inspected and tested be
fore shipment from the factory. Before installation, in
spect the pump for damage which may have occurred
during shipment. Check as follows:
a. Inspect the pump assembly for cracks, dents, dam
aged threads, and other obvious damage.
b. Check for and tighten loose attaching hardware.
Since gaskets tend to shrink after drying, check for
loose hardware at mating surfaces.
c. The standard pump is furnished with 50 feet of
power cable. Inspect the cable for cuts or damage.
d. Inspect the control box for cracks, dents, and other
obvious damage.
e. Check that all control box components are securely
attached to their mounting surfaces, and the electri
cal connections are tight and free of corrosion.
f. Compare the amperes, phase, voltage and hertz in
dicated on the motor nameplate to the ratings indi
cated for the control box.
g. Carefully read all tags, decals, and markings on the
pump assembly and the control box, and perform all
duties as indicated.
h. Check the pump and motor for any oil leaks. An oil
leak may indicate a cut O‐ring or other damage.
i. If the pump and control box have been stored for
more than 12 months, some of the components or
lubricants may have exceeded their maximum shelf
life. These must be inspected or replaced to en
sure maximum pump service.
If the maximum shelf life has been exceeded, or if any
thing appears to be abnormal, contact your Gorman‐
Rupp distributor or the factory to determine the repair or
updating policy. Do not put the pump into service until
appropriate action has been taken.
LUBRICATION
This pump series utilizes one lubrication cavity, located
just behind the seal plate. It is filled with premium quality
submersible pump oil which lubricates two shaft seals.
The motor operates in air and requires no lubrication.
The lower shaft seal prevents liquid from entering the lu
brication cavity, while the upper shaft seal prevents oil
leakage into the motor. The upper seal also acts as
backup protection in the event of lower seal failure.
The lubrication cavity was fully lubricated when shipped
from the factory. Check the oil level before installing the
pump (see LUBRICATION in MAINTENANCE AND RE
PAIR). An additional quart of oil has been provided with
the pump to “top off” the oil cavity. If the oil level is abnor
mally low, determine the cause before putting the pump
into service.
PUMP SPECIFICATIONS
See Tables B‐1 and B‐2 for pump specifications and mo
tor data.

OM-04417 SM SERIES
PAGE B - 4 INSTALLATION
Table B‐1. Pump Specifications
Model
Voltage/
Phase
Motor
Horsepow
er
Pump
Speed
(RPM)
Full
Load
Amperes
No
Load
Amperes
Locked
Rotor
Amperes
Discharge
Size
(NPT)
SM2E 460/3
575/3
3.5 3450 4.5
3.6
2
1.6
25
20
2 INCH
SM2F 460/3
575/3
1 3450 2.0
1.6
1.5
1.2
10.5
8.4
2 INCH
SM3B 460/3
575/3
6 3450 10.8
8.6
4
3.2
56
45
3 INCH
SM3C 460/3
575/3
6 3450 10.8
8.6
4
3.2
56
45
3 INCH
SM4C 460/3
575/3
10 3450 17
13.6
3.5
2.8
76
61
4 INCH
SM4D 460/3
575/3
10 3450 17
13.6
3.5
2.8
76
61
4 INCH
SM4E 460/3
575/3
20 3450 26
20.8
4.4
3.5
170
136
4 INCH
SM4F 460/3
575/3
20 3450 26
20.8
4.4
3.5
170
136
4 INCH
SM4G 460/3
575/3
30 3450 38.5
30.8
7.5
6
213
170
4 INCH
SM4H 460/3
575/3
10 3450 17
13.6
3.5
2.8
76
61
4 INCH
SM4J 460/3
575/3
60 3450 66
52.8
11
8.8
500
400
4 INCH
SM4K 460/3
575/3
15 3450 18
14.4
3.5
2.8
125
100
4 INCH
SM6D 460/3
575/3
30 3450 38.5
30.8
7.5
6
213
170
6 INCH
SM6E 460/3
575/3
60 3450 66
52.8
11
8.8
500
400
6 INCH
Table B‐2. Additional Specifications
Pump
Model
Voltage/
Phase
Approximate Weight
Lbs. (kg) Seal Cavity
Pump 50Ft. Cable
Oil Capacity
Ounces
(Liters)
Filling Position
(H)orizontal
(V)ertical
SM2E1
SM2E18
SM2E65
460/3
575/3
57 (26)
57 (26)
84 (38)
23 (10,4) 8 (0,2) ONLY
NOTE: DO NOT
OVER FILL
H
SM2F1 460/3
575/3
43 (20) 23 (10,4) 8 (0,2) ONLY
NOTE: DO NOT
OVER FILL
H
SM3B1
SM3B18
SM3B65
460/3
575/3
106 (48)
109 (49)
205 (93)
23 (10,4) 16 (0,5) H

OM-04417SM SERIES
PAGE B - 5INSTALLATION
Table B‐2. Additional Specifications (continued)
Pump
Model
Seal Cavity
Approximate Weight
Lbs. (kg)
Voltage/
Phase
Pump
Model
Filling Position
(H)orizontal
(V)ertical
Oil Capacity
Ounces
(Liters)50Ft. CablePump
Voltage/
Phase
SM3C1
SM3C18
SM3C65
460/3
575/3
106 (48)
109 (49)
205 (93)
23 (10,4) 16 (0,5) H
SM4C1
SM4C18
SM4C65
460/3
575/3
183 (83)
188 (85)
303 (137)
23 (10) 20 (0,6) H
SM4D1
SM4D18
SM4D65
460/3
575/3
173 (79)
173 (79)
281 (128)
23 (10) 20 (0,6) H
SM4E1 460/3
575/3
302 (137) 38 (17) 32 (1) H
SM4F1 460/3
575/3
302 (137) 38 (17) 32 (1) H
SM4G1 460/3
575/3
541 (245) 38 (17) 112 (3,3) V
SM4H1 460/3
575/3
183 (83) 23 (10) 20 (0,6) H
SM4J1 460/3
575/3
774 (351) 53 (24) 144 (4,3) V
SM4K1 460/3
575/3
253 (115) 23 (10) 32 (1) H
SM6D1 460/3
575/3
538 (244) 38 (17) 112 (3,3) V
SM6E1 460/3
575/3
765 (347) 53 (24) 144 (4,3) V
Pump Dimensions
For the approximate physical dimensions of your pump,
refer to the pump specification data sheet or contact your
Gorman‐Rupp distributor or the Gorman‐Rupp Com
pany.
PUMP INSTALLATION
When installing or servicing the pump or con
trols, follow all requirements for the installa
tion of wiring or electrical equipment as out
lined in the National Electric Code. Follow all
MSHA safety requirements. Failure to ob
serve these requirements could result in inju
ry or death to personnel.
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.