GORMAN-RUPP PUMPS Roto-Prime RS Series Owner's manual

PUBLICATION NUMBER OM-03989
January 21, 1994
Rev. D 05‐10‐12
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
RS AND RD
SERIES PUMPS

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
PAGE I - 1INTRODUCTION
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: [phone]
or:
Gorman‐Rupp of Canada Limited
70 Burwell Road
St. Thomas, Ontario N5P 3R7
Phone: [phone]
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.................................................................

OM-03989RS AND RD SERIES PUMPS
PAGE I - 2 INTRODUCTION
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.............................................
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:
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-03989 RS AND RD SERIES PUMPS
PAGE A - 1SAFETY
SAFETY - SECTION A
The following information applies
throughout this manual to Gorman‐
Rupp RS and RD Roto‐PrimerSeries
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:
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.
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.
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.