Gorman-Rupp Pumps RD2A31-BAR User Manual
PUBLICATION NUMBER OM-03989
January 21, 1994
Rev. D 05‐10‐12
RS AND RD
SERIES PUMPS
THE GORMAN‐RUPP COMPANY MANSFIELD, OHIO
GORMAN‐RUPP OF CANADA LIMITED ST. THOMAS, ONTARIO, CANADA Printed in U.S.A.
www.grpumps.com
1994 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:
OM-03989 RS AND RD SERIES PUMPS
INTRODUCTION
Thank You for purchasing a Gorman‐Rupp RS or
RD Roto‐Prime Series 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.
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. However,
since pump installations are seldom identical,
some of the information only summarizes general
recommendations and practices required to in
spect, 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 components. Contact the
factory for the authorized repair facility closest to
you.
This pump is a Roto‐Prime self‐priming centrifu
gal petroleum pump, designed to handle petro
leum products only. It incorporates an integral va
riable‐capacity vane pump which automatically
evacuates air and vapor from the suction line. This
pump should not be used to handle water or other
non‐petroleum liquids. For specific service, con
tact your Gorman‐Rupp distributor or the Gorman‐
Rupp Company.
The basic pump is not furnished with a mounting
base and power source; however, these items are
available from the factory as optional equipment.
The pump is designed to be driven by an explo
sion‐proof motor with a maximum full load speed
of either 1750 RPM (RS Series) or 3450 RPM (RD
Series).
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
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.....................................................
PUMP DIMENSIONS PAGE B - 1..........................................................
PREINSTALLATION INSPECTION PAGE B - 1...............................................
POSITIONING PUMP PAGE B - 2..........................................................
GROUNDING PAGE B - 2................................................................
SUCTION AND DISCHARGE PIPING PAGE B - 2............................................
SUCTION LINES PAGE B - 3..............................................................
DISCHARGE LINES PAGE B - 6...........................................................
ALIGNMENT PAGE B - 7.................................................................
PAGE I - 1INTRODUCTION
OPERATION - SECTION C
GENERAL INFORMATION PAGE C - 1.....................................................
PRIMING PAGE C - 1....................................................................
STARTING PAGE C - 4...................................................................
OPERATION PAGE C - 4.................................................................
STOPPING PAGE C - 5...................................................................
BEARING TEMPERATURE CHECK PAGE C - 5.............................................
OM-03989RS AND RD SERIES PUMPS
RECORDING MODEL AND
WARRANTY INFORMATION
SERIAL NUMBERS
The warranty provided with your pump is part of
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:
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.
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.
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
Hazards or unsafe practices which
Instructions to aid in installation, operation, and
maintenance or which clarify a procedure.
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.
PAGE I - 2 INTRODUCTION
OM-03989 RS AND RD SERIES PUMPS
SAFETY - SECTION A
The following information applies
throughout this manual to Gorman‐
Rupp RS and RD Roto‐Primer Series
basic pumps.
Because pump installations are seldom
identical, this manual cannot possibly
provide detailed instructions and pre
cautions for each specific application.
Therefore, it is the owner/installer's re
sponsibility to ensure that applications
not addressed in this manual are per
formed only after establishing that nei
ther operator safety nor pump integrity
are compromised by the installation.
Before attempting to install, operate, or
service this pump, familiarize yourself
with this manual, and with all other liter
ature shipped with the pump. Unfamil
iarity with all aspects of pump operation
covered in this manual could lead to de
struction of equipment, injury, or death
to personnel.
Before attempting to open or service the
pump:
4. Check the temperature before
opening any covers, plates, or
plugs.
5. Close the suction and discharge
valves.
6. Vent the pump slowly and cau
tiously.
7. Drain the pump.
This pump is designed to handle petro
leum products or other similar hydro
carbon liquids. Do not attempt to pump
water, corrosive materials, or any liq
uids which may damage the pump or en
danger personnel as a result of pump
failure.
This pump is designed to be used with
volatile and/or flammable liquids; be
certain proper safety practices are fol
lowed before operating or servicing the
pump. Provide adequate ventilation,
prohibit smoking, wear static‐resistant
clothing and shoes. Clean up all fuel
spills immediately after occurrence.
1. Familiarize yourself with this man
ual.
2. Shut off the incoming power to the
motor and lock it out, or take other
action to ensure that the pump will
remain inoperative.
3. Allow the pump to completely cool
if overheated.
Do not operate the pump against a
closed discharge valve for long periods
of time. If operated against a closed dis
charge valve, pump components will
deteriorate, and the liquid could come
to a boil, build pressure, and cause the
pump casing to rupture or explode.
PAGE A - 1SAFETY
RS AND RD SERIES PUMPS OM-03989
6. Refer to instructions in this manual
before restarting the pump.
After the pump has been installed, make
certain that the pump and all piping con
nections are tight, properly supported
and secure before operation.
Do not install and operate a non‐explo
sion proof motor in an explosive atmo
sphere. Install, connect, and operate
the motor in accordance with The Na
tional Electric Code and all local codes.
This pump is designed to be used with
volatile and/or flammable liquids; over
heating may produce dangerous fumes.
Take precautions to ensure the area sur
rounding the pump is adequately venti
lated. Allow the pump to completely
cool and use extreme caution when
venting the pump, or when removing
covers, plates, plugs, or fittings.
If there is a conflict between the instruc
tions in the manual accompanying the
unit and The National Electric Code or
the applicable local code, The National
or local code shall take precedence. All
electrical equipment supplied with this
pump conformed to applicable federal
regulations and national codes in effect
on the date of manufacture.
Overheated pumps can cause severe
burns and injuries, and produce explo
sive fumes. If overheating of the pump
occurs:
1. Stop the pump immediately.
2. Ventilate the area.
3. Allow the pump to completely cool.
4. Check the temperature before
opening any covers, plates,
gauges, or plugs.
5. Vent the pump slowly and cau
tiously.
This pump is not designed to handle water.
Operation of the pump with water or water‐
based solutions will damage the group
grind within the vane‐type priming pump.
Do not connect this pump to a storage
tank which has been filled with water until
the tank and lines have been completely
drained and flushed. Install a commercially
available 80 mesh screen and a filter in the
suction line to prevent debris from entering
the pump. Check pump rotation with the
suction line disconnected.
PAGE A-2 SAFETY
OM-03989 RS AND RD SERIES 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.
This pump is not designed to handle water.
Operation of the pump with water or water‐
based solutions will damage the group
grind within the vane‐type priming pump.
Do not connect this pump to a storage
tank which has been filled with water until
the tank and lines have been completely
drained and flushed. Install a commercially
available 80 mesh screen and a filter in the
suction line to prevent debris from entering
the pump. Check pump rotation with the
suction line disconnected.
contact your Gorman‐Rupp distributor or the Gor
man‐Rupp Company.
PREINSTALLATION INSPECTION
The pump assembly was inspected and tested be
fore shipment from the factory. Before installation,
inspect the pump for damage which may have oc
curred during shipment. Check as follows:
a. Inspect the pump for cracks, dents, damaged
threads, and other obvious damage.
b. Check for and tighten loose attaching hard
ware. Since gaskets tend to shrink after dry
ing, check for loose hardware at mating sur
faces.
c. Carefully read all tags, decals, and markings
on the pump assembly, and perform all duties
indicated. Note the direction of rotation indi
cated on the pump. Check that the pump
shaft rotates in the required direction.
Most of the information pertains to a standard stat
ic lift application, where the pump is positioned
above the free level of the liquid to be pumped.
If installed in a flooded suction application,
where the liquid is supplied to the pump under
pressure, some of the information such as mount
ing, line configuration, and priming must be tai
lored to the specific application. Since the pres
sure supplied to the pump is critical to perform
ance and safety, be sure to limit the incoming pres
sure to 50% of the maximum permissible operating
pressure shown on the pump performance curve.
For further assistance, contact your Gorman‐Rupp
distributor or the Gorman‐Rupp Company.
PUMP DIMENSIONS
For the approximate physical dimensions of your
pump, refer to the pump specification data sheet or
Only operate this pump in the direction in
dicated on the pump body and/or the ac
companying decal. Reverse rotation of the
shaft will adversely effect pump perform
ance, and the pump could be seriously
damaged.
d. Check levels and lubricate as necessary. Re
fer to LUBRICATION in the MAINTENANCE
AND REPAIR section of this manual and per
form duties as instructed.
e. If the pump and power source have been
stored for more than 12 months, some of the
components or lubricants may have ex
ceeded their maximum shelf life. These must
be inspected or replaced to ensure maxi
mum pump service.
PAGE B - 1INSTALLATION
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