AC International SELF-PRIMING CENTRIFUGAL PUMPS User Manual
PUBLICATION NUMBER OM--04760
December 2, 1998
Rev. A 11-20-03
SELF-PRIMING
CENTRIFUGAL PUMPS
THE GORMAN-RUPP COMPANY D MANSFIELD, OHIO
GORMAN-RUPP OF CANADA LIMITED D ST.THOMAS, ONTARIO, CANADA Printed in U.S.A.
eCopyright by the Gorman-Rupp Company
OM--04760 SELF-PRIMING CENTRIFUGAL PUMPS
INTRODUCTION
Thank You for purchasing a Gorman-Rupp Self-
Priming Centrifugal Pump. Read this manual
carefully to learn how to safely install and operate
yourpump. Failuretodosocouldresultinpersonal
injury or damage to the pump.
A set of three manuals accompanies your pump.
Each set consists of three parts; the
Operation Manual
on installing and operating the pumps. However,
since pump installations are seldom identical,
some of the information only summarizes general
recommendations and practices required to inspect, position, and arrangethe pump andpiping.
The Parts List Manual
curve(s), a pump model cross-section drawing,
and parts list for your pump.
The Maintenance and Repair Manual
troubleshooting and maintenance instructions requiredtoproperlydiagnose operationalproblems,
and to service the pump components.
Because pump installations are seldom identical,
this manual cannot possibly provide detailed in-
contains essential information
provides performance
Installation/
provides
structions and precautions for every aspect of
each specific application. Therefore, it is the responsibility of the owner/installer of the pump to
ensure that applications not a ddressed in this
manual are performed only after establishingthat
neither operatorsafety nor pumpintegrity arecompromised by the installation. Pumps and related
equipment must be installed and operated ac-
cording to all national, local and industry standards.
If there are any questions regarding the pump
which are not covered in this manual or in other literature accompanying the unit, please contact
your Gorman-Rupp distributor or the GormanRupp 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...............................................
POSITI ONING PUMP PA GE B --- 1..........................................................
SUCTION AND DISCHARGE PIPING PAGE B --- 2............................................
AUTOMATIC AIR RELEASE VALVE PAGE B --- 5..............................................
ALIGNMENT PA GE B --- 7.................................................................
ELECTRICAL CONNECTIONS PAGE B --- 9..................................................
OPERATION -- SECTION C
PRIMING PA GE C --- 1....................................................................
STARTING PA GE C --- 1...................................................................
OPERATION PA GE C --- 2.................................................................
STOPPING PA GE C --- 3...................................................................
BEARING TEMPERATURE CHECK PAGE C --- 4.............................................
LUBRICATION PA GE C --- 4................................................................
INTRODUCTION
PAGE I -- 1
OM--04760SELF-PRIMING CENTRIFUGAL PUMPS
RECORDING MODEL AND
WARRANTY INFORMATION
SERIAL NUMBERS
The warranty provided with your pump is part of
Please record the pump model and serial number
in the spaces provided below. Your Gorman-Rupp
distributorneedsthisinformationwhen yourequire
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 hazardswhichWILL resultin
severe personal injury or death. These
instructions describe the procedure required 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 described in this and the other accompanying literature. Please note that should the equipment be
abused or modified to change its performance beyond the original factory specifications, the warranty will become void and any claim will be denied.
HazardsorunsafepracticeswhichCOULD
resultinminorpersonalinjuryor productor
property damage. These instructions describe the requirements and the possible
damage which could result from failure to
follow the procedure.
Hazards o r unsafe practices which
COULDresult in severe personal injury
or death. These instructions describe
the procedure required and the injury
which could result from failure tofollow
the procedure.
NOTE
Instructions to aid in installation, operation, and
maintenance or which clarify a procedure.
PAGE I -- 2
INTRODUCTION
SELF-PRIMING CENTRIFUGAL PUMPS
SAFETY - SECTION A
OM--04760
This information applies to G-R SelfPriming Centrifugal pumps. These
pumps are available as basic,pedestalmounted models or as close-coupled
models driven by either an electric motor, gasoline or diesel engine. Refer to
the manual accompanying the power
sourcebeforeattemptingto beginoperation.
This manual wil l alert personnel to
known procedures which require special attention, to those which could
damage equipment,and to thosewhich
could be dangerous to personnel.However,thismanualcannotpossiblyantici pate and provide detailed instructions
and precautionsfor every situationthat
might occur during maintenance of the
unit.Therefore,itis theresponsibilityof
the owner/maintenance personnel to
ensurethatonlysafe,established maintenance procedures are used, and that
any procedures not addressed in this
manual are performed only after establishing that neither personal safety nor
pump integ rity are compromised by
such practices.
Inaddition to this manual,see the separate literature covering maintenance
andrepair, pumpparts,andanyoptional
equipment shipped with 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 cautiously.
7. Drain the pump.
Do not attempt to pump any liqui d s the
pump has not been designed for, and
which may damage the pump or endanger personnel as a result of pump failure. Consult the factory to determine
compatibilitybetweenthepumpandliquid.
Use lifting and moving equipment in
good repair and with adequate capacity
toprevent injuriesto personnel or damage to equipment. Suction and discharge hoses and piping must be removed from the pump before lifting.
Beforeattemptingtoopen or servicethe
pump:
1. Familiarize yourself with thismanual.
2. Disconnect or shut down the pow er source and take necessarypre cautions to ensure that the pump
will remain inoperative.
3. Allow the pump tocompletely cool
if overheated.
After the pump has been positioned,
make certain that the pump and all piping orhose connections are tight, prop erly supported and secure before operation.
Do not operate the pump against a
closeddischargevalve forlongperiods
oftime.Ifoperatedagainstacloseddischarge valve, pump components will
deteriorate, and the liquid could come
PAGE A -- 1SAFETY
SELF-PRIMING CENTRIFUAL PUMPSOM--04760
to a boil, build pressure, and cause the
pump casing to rupture or e xplode.
Do not remove plates, covers, gauges,
pipe plugs, or fittings from an overheated pump. Vaporpressure within the
pump can cause parts being disengagedto be ejected withgreatforce.Allow the pump to cool before servicing.
Thesepumpsmaybeusedtohandle
productswhichifoverheatedcouldproduce dangerous fumes. Use extreme
caution when venting the pump, or
whenremovingcovers,plates,plugs,or
fittings.
parts can catch clothing, fingers, or
tools, causing severe injury to personnel.
If the pump is powered by an electric
motor, do not operate a non-explosion
proof motor in an explosive atmosphere. An explosion, which may cause
severe personal injury or death, could
result. Install, connect and operate the
motor in accordance with the National
Electric Code and all local codes. If
there is a conflict between the instructions in the manual accompanying the
unit and the National Electric Code or
applicable local code, the National or
Local code shall take precedence. All
electrical equipment supplied with the
pump conforms to applicable federal
regulations and national codesin effect
on the date of manufacture.
Neverrunthispumpbackwards. Becertain that rotation is correct before fully
engaging the pump.
If the pump is used to pump materials
which c ould cause seriousillness orin jury through di re ct exposure or emitted
fumes, wear protective clothing, such
asrubbergloves,facemask, and rubber
apron, as necessary before disassembling the pump or piping.
Do not operate the pump without
shields and/or guards in place over the
drive shafts, belts, and/or couplings, or
other rotating parts. Exposed rotating
If the pump is electric motor driven, the
electrical power used to operate this
pump is high enough to cause injury or
death.Obtainthe servicesof a qualified
electrician to troubleshoot, test and/or
service the electrical components of
this pu mp.
If the pump is powered by an internal
combustion engine, do not operate in
anexplosiveatmosphere.Whenoperating internal combustion engines in an
enclosed area, make certain that exhaust fumes are piped to the outside.
Thesefumes containcarbonmonoxide,
a deadly gas thatis colorless, tasteless,
and odorless.
PAGE A -- 2
SAFETY
SELF-PRIMING CENTRIFUGAL PUMPS
Fuel used by internal combustion engines presents an extreme explosion
and fire hazard. Make certain that all
fuel lines are securely conne cted and
free of leaks. Never refuel a hot or running engine. Avoid overfilling the fuel
tank.Alwaysusethe c orrect typeoffuel.
Never tamper with the engine governor
to gain more power. The governor establishessafe operatinglimits thatshould
not be exceeded. The maximum contin-
OM--04760
uous operating speed for the pump is
shownontheperformancecurve(see
the Parts List Manual).
Ifthepump ispoweredbyanengine,the
engine exhaust from this product con tains chemicals known to the State of
California tocausecancer, birthdefects
or other reproductive harm.
Pumps and relatedequipment must beinstalled and operated according to all national, local and industry standards.
PAGE A -- 3SAFETY
SELF-PRIMING CENTRIFUGAL PUMPS OM--04760
INSTALLATION --- SECTION B
Review all SAFETY information in Section A.
Since pump installations are seldom identical,this
section offers only general recommendations and
practices required to inspect, position, and arrange the pump and piping.
Most of the information pertains to a standard
staticliftapplication wherethe pump ispositioned
above the free level of liquid to be pumped.
If installedin a flooded suctionapplication where
the liquid is supplied to the pump under pressure,
some of the information such as mounting, line
configuration, and priming must be tailored to the
specific application. Since the pressure supplied
to the pump is critical to performance and safety,
besuretolimitthe incomingpressure to50%ofthe
maximum permissible operating pressure as
shown on thepump performancecurve (see Parts
ListManual).If the pump is fitted with aGorman-
Rupp double grease lubricated seal, the maximum incoming pressure must be reduced to 10
p.s.i.
Forfurther assistance, contact yourGorman-Rupp
distributor or the Gorman-Rupp Company.
PREINSTALLATION INSPECTION
Thepumpassemblywasinspectedand tested before shipment from the factory. Before installation,
inspect the pump for damage which may have occurred during shipment. Check as follows:
a. Inspect the pump and power source (if so
equipped) for cracks, dents, damaged
threads, and other obvious damage.
b. Check for and tighten loose attaching hard-
ware. Since gaskets tend to shrink after drying, check for loose hardware at mating surfaces.
c. Carefully read all tags, decals, and markings
onthepumpassembly, andperformallduties
indicated. Note that the pump shaft rotates in
the required direction.
d. Check levelsand lubricate as necessary. Re-
fer to LUBRICATION in the MAINTENANCE
AND REPAIR section of this manual and any
other literature accompanying the unit and
perform 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 exceeded their maximum shelf life. These must
be inspected or replaced to ensure maximum pump service.
If the maximum shelf life has been exceeded, or if
anything 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.
Battery Installation
If the pump is engine driven, the engine battery is
not included with the unit unless otherwise specified on the pump order. See the battery tag included with the battery box assembly for battery
specifications. Refer to information accompanying
thebatteryand/orelectrolytesolutionforactivation
and charging instructions.
Before installingthe battery,cleanthepositiveand
negative cable connectors, and the battery terminals. Secure the battery by tightening the holddown brackets. The terminalsand clamps maybe
coated with petroleum jelly to retard corrosion.
Connect and tighten the positive cable first, then
thenegativecable.
POSITIONING PUMP
Lifting
Use lifting equipment with a capacity of at least 5
times the weight of the pump, not including the
weight of accessories, wheel kit or optional equipment. Customer installed equipment such as suctionanddischargepipingmust be removedbefore
attempting to lift.
PAGE B -- 1INSTALLATION
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