GORMAN-RUPP 10 SERIES Operating instructions

PUBLICATION NUMBER MR--04885
December 1, 1998
Rev. B 12/10/01
Use With: OM--04760
THE GORMAN-RUPP COMPANY DMANSFIELD, OHIO
GORMAN-RUPP OF CANADA LIMITED DST. THOMAS, ONTARIO, CANADA Printed in U.S.A.
ECopyright by the Gorman-Rupp Company
10 SERIES PUMPS
12B, 12C, 12D, 13A, 13C And 13E
Electric Motor Or Engine Driven Pumps
with Self Lubricated or Grease Seal

The engine exhaust from this
product contains chemicals
known tothe State of Californiato
cause cancer, birth defects or
other reproductive harm.

MR--0488510 SERIES PUMPS
PAGE I -- 1
INTRODUCTION
INTRODUCTION
Thank You for purchasing a Gorman-Rupp 10
Series Pump. Read this manual carefully to learn
howtosafelymaintainandserviceyourpump.Fail-
ure to do so could result in personal injury or dam-
age to the pump.
A set of three manuals accompanies your pump.
TheInstallation/OperationManualcontainsessen-
tial information on installing and operating the
pump. The Parts List Manual provides a perform-
ance curve, a pump model cross-section drawing,
andpartslistforyourpump.
This Maintenance and Repair Manual provides
troubleshooting and maintenance instructions re-
quiredto properlydiagnose operationalproblems,
and to service the pump components.
As described on the following page, this manual
willalert personnel toknown procedures which re-
quire specialattention, to those which could dam-
age equipment, and to those which could be dan-
gerous topersonnel. However, this manualcannot
possibly anticipate and provide detailed precau-
tions for every situation that might occur during
maintenance of the pump. Therefore, it is the re-
sponsibility of the owner/maintenance personnel
to ensure that only safe, established maintenance
proceduresare used, and that any procedures not
addressed in this manualare performed only after
establishing that neither personalsafety nor pump
integrity are compromised by such practices.
Pumps and related equipment must be installed
andoperatedaccordingtoallnational,localandin-
dustry standards.
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
TROUBLESHOOTING -- SECTION B
PREVENTIVE MAINTENANCE PAGE B --- 3..................................................
PUMP MAINTENANCE AND REPAIR -- SECTION C
GENERAL INFORMATION PAGE C --- 1.....................................................
Lifting PAGE C --- 1....................................................................
PARTS IDENTIFICATION LIST:
Pump Assembly w/Self Lubricated Seal PAGE C --- 3......................................
Pump Assembly w/Grease Seal PAGE C --- 5.............................................
PUMP AND SEAL DISASSEMBLY AND REASSEMBLY PAGE C --- 6............................
Impeller Clearances PAGE C --- 11......................................................
LUBRICATION PAGE C --- 12...............................................................
Self Lubricated Seal Assembly PAGE C --- 12.............................................
Grease Seal Assembly PAGE C --- 12....................................................
Power Source PAGE C --- 13...........................................................

MR--04885 10 SERIES PUMPS
PAGE I -- 2 INTRODUCTION
RECORDING MODEL AND
SERIAL NUMBERS
Pleaserecordthepumpmodel,serialnumber,volt-
age,andphaseinthespacesprovidedbelow.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.
HazardsorunsafepracticeswhichCOULD
resultinminorpersonalinjuryorproductor
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.

10 SERIES PUMPS MR--04885
PAGE A -- 1SAFETY
SAFETY - SECTION A
This information applies to 10 Series
electric motor or engine driven pumps.
Refer to the manual accompanying the
power source before attempting to be-
gin operation.
This manual will alert personnel to
known procedures which require spe-
cial attention, to those which could
damage equipment, and to those which
could be dangerous to personnel.How-
ever,thismanualcannotpossiblyantici-
pate and provide detailed instructions
and precautions for every situation that
might occur during maintenance of the
unit.Therefore,it is the responsibility of
the owner/maintenance personnel to
ensurethatonlysafe, established main-
tenance procedures are used, and that
any procedures not addressed in this
manual are performed only after estab-
lishing that neither personal safety nor
pump integrity are compromised by
such practices.
Thismanual containsessentialinforma-
tion on troubleshooting and maintain-
ing the pump.In additionto this manual,
see the separate literature covering
installation and operation, pump parts,
and any optional equipment shipped
with the pump.
Beforeattemptingtoopenorservicethe
pump:
1. Familiarize yourself with this man-
ual.
2. Disconnect or shut down the pow-
er source and take the necessary
precautions 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.
Do not attempt to pump any liquids the
pump has not been designed for, and
which may damage the pump or endan-
ger personnel as a result of pump fail-
ure. Consult the factory to determine
compatibilitybetweenthepumpandliq-
uid.
Use lifting and moving equipment in
good repair and with adequate capacity
to prevent injuries to personnel or dam-
age to equipment. Suction and dis-
charge hoses and piping must be re-
moved from the pump before lifting.
After the pump has been positioned,
make certain that the pump and all pip-
ing or hose connections are tight,prop-
erly supported and secure before oper-
ation.
Do not operate the pump against a
closeddischarge valveforlongperiods
oftime.Ifoperatedagainstacloseddis-
charge valve, pump components will

10 SERIES PUMPSMR--04885
PAGE A -- 2 SAFETY
deteriorate, and the liquid could come
to a boil, build pressure, and cause the
pump casing to rupture or explode.
Do not remove plates, covers, gauges,
pipe plugs, or fittings from an over-
heatedpump. Vaporpressure within the
pump can cause parts being disen-
gaged to be ejected with great force.Al-
low the pump to cool before servicing.
Thesepumpsmaybeusedtohandle
productswhichifoverheatedcouldpro-
duce dangerous fumes. Use extreme
caution when venting the pump, or
whenremovingcovers,plates,plugs,or
fittings.
Neverrunthispumpbackwards.Becer-
tain that rotation is correct before fully
engaging the pump.
If the pump is used to pump materials
which could cause serious illness or in-
jury through direct exposure or emitted
fumes, wear protective clothing, such
asrubbergloves,facemask,andrubber
apron, as necessary before disassem-
bling 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
parts can catch clothing, fingers, or
tools, causing severe injury to person-
nel.
If the pump is powered by an electric
motor, do not operate a non-explosion
proof motor in an explosive atmo-
sphere. 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 instruc-
tions 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 codes in effect
on the date of manufacture.
If the pump is electric motor driven, the
electrical power used to operate this
pump is high enough to cause injury or
death. Obtain the servicesof aqualified
electrician to troubleshoot, test and/or
service the electrical components of
this pump.
If the pump is powered by an internal
combustion engine, do not operate in
anexplosiveatmosphere.Whenoperat-
ing internal combustion engines in an
enclosed area, make certain that ex-
haust fumes are piped to the outside.
These fumescontain carbon monoxide,
a deadly gas that is colorless, tasteless,
and odorless.

10 SERIES PUMPS MR--04885
PAGE A -- 3SAFETY
Fuel used by internal combustion en-
gines presents an extreme explosion
and fire hazard. Make certain that all
fuel lines are securely connected and
free of leaks. Never refuel a hot or run-
ning engine. Avoid overfilling the fuel
tank.Alwaysusethe correcttypeoffuel.
Never tamper with the engine governor
to gain more power. The governor esta-
blishessafeoperatinglimitsthatshould
not be exceeded. The maximum contin-
uous operating speed for the pump is
shownontheperformancecurve(see
the Parts List Manual).
Pumps and related equipment must be in-
stalled and operated according to all na-
tional, local and industry standards.

MR--0488510 SERIES PUMPS
TROUBLESHOOTING PAGE B -- 1
TROUBLESHOOTING --- SECTION B
Review all SAFETY information in Section A.
Beforeattempting toopenorservice the
pump:
1. Familiarize yourself with this manual.
2. Disconnect or shut down the power
source and take the necessary pre-
cautions to ensure that the pump will
remain inoperative.
3. Allow the pump to completely cool if
overheated.
4. Check the temperature before open-
ing any covers, plates, or plugs.
5. Close the suction and discharge
valves.
6. Vent the pump slowly and cautiously.
7. Drain the pump.
Table B-1 Troubleshooting Chart
TROUBLE POSSIBLE CAUSE PROBABLE REMEDY
PUMP FAILS TO PRIME Not enough liquid in casing.
Suction check valve contaminatedor
damaged.
Air leak in suction line.
Lining of suction hose collapsed.
Leakingorwornsealorpumpgas-
ket.
Suction lift or discharge head too
high.
Strainer clogged.
Addliquidtocasing.SeePRIMING.
Clean or replace check valve.
Correct leak.
Replace suction hose.
Check pump vacuum. Replace leak-
ingorwornsealorgasket.
Check piping installation and install
bypass line if needed. See INSTAL-
LATION.
Check strainer and clean if neces-
sary.
PUMP STOPS OR FAILS
TO DELIVER RATED
FLOW OR PRESSURE
Air leak in suction line.
Lining of suction hose collapsed.
Suction intake not submerged at
proper level or sump too small.
Correct leak.
Replace suction hose.
Check installation and correct sub-
mergence as needed.

MR--04885 10 SERIES PUMPS
TROUBLESHOOTINGPAGE B -- 2
Table B-1 Troubleshooting Chart (continued)
TROUBLE POSSIBLE CAUSE PROBABLE REMEDY
PUMP STOPS OR FAILS
TO DELIVER RATED
FLOW OR PRESSURE
(cont.)
Impellerorotherwearingpartsworn
or damaged.
Leakingorwornsealorpumpgas-
ket.
Impeller clogged.
Pump speed too slow.
Pump running backwards (electric
motor driven models).
Suction lift or discharge head too
high.
Replace worn or damaged parts.
Check that impeller is properly cen-
tered and rotates freely.
Check pump vacuum. Replace leak-
ingorwornsealorgasket.
Free impeller of debris.
Check driver output; check belts or
couplings for slippage.
Check direction of rotation. Correct
3-phase wiring by interchanging any
two motor leads at control box. (See
Pump Rotation in the Installation
and Operations Manual.
Check piping installation and install
bypass line if needed. See INSTAL-
LATION in the Installation and Op-
erations manual.
PUMP REQUIRES TOO
MUCH POWER Pump speed too high.
Discharge head too low.
Liquid solution too thick.
Check driver output, check that
sheaves or couplings are correctly
sized.
Adjust discharge valve.
Dilute if possible.
PUMP CLOGS
FREQUENTLY Discharge flow too slow.
Suction check valve or foot valve
clogged or binding.
Open discharge valve filly to in-
crease flow rate, and run power
source at maximum governed
speed.
Clean valve.
EXCESSIVE NOISE Cavitation in pump.
Pumping entrained air.
Pump or drive not securely
mounted.
Impeller clogged or damaged.
Reduce suction lift and/or friction
losses in suction line. Record vacu-
um and pressure gauge readings
and consult local representative or
factory.
Locate and eliminate source of air
bubble.
Secure mounting hardware.
Clean out debris; replace damaged
parts.

MR--0488510 SERIES PUMPS
TROUBLESHOOTING PAGE B -- 3
PREVENTIVE MAINTENANCE
Sincepumpapplicationsareseldomidentical,and
pump wear is directly affected by such things as
the abrasive qualities, pressure and temperature
oftheliquidbeingpumped, thissectionisintended
only to provide general recommendations and
practices for preventive maintenance. Regardless
of the application however, following a routine pre-
ventive maintenance schedule will help assure
trouble-free performance and long life from your
Gorman-Rupp pump. For specific questions con-
cerning your application, contact your Gorman-
Rupp distributor or the Gorman-Rupp Company.
Record keeping is an essential component of a
good preventive maintenance program. Changes
in suction and discharge gauge readings (if so
equipped) between regularly scheduled inspec-
tions can indicate problems that can be corrected
before system damage or catastrophic failure oc-
curs.Theappearanceofwearingpartsshouldalso
bedocumentedat each inspectionforcomparison
as well. Also, if records indicate that a certain part
(such as the seal) fails at approximately the same
duty cycle, the part can be checked and replaced
beforefailureoccurs, reducingunscheduleddown
time.
For new applications, a first inspection of wearing
partsat250hourswillgiveinsightintothewearrate
foryourparticularapplication.Subsequentinspec-
tions should be performed at the intervals shown
on the chart below. Critical applications should be
inspected more frequently.
General Condition (Temperature, Unusual
Noises or Vibrations, Cracks, Leaks,
Loose Hardware, Etc.) I
Pump Performance (Gauges, Speed, Flow) I
Bearing Lubrication I R
Seal Lubrication (And Packing Adjustment,
If So Equipped) I R
V-Belts (If So Equipped) I
Air Release Valve Plunger Rod (If So Equipped) I C
Front Impeller Clearance (Wear Plate) I
Rear Impeller Clearance (Seal Plate) I
Check Valve I
Pressure Relief Valve (If So Equipped) C
Pump and Driver Alignment I
Shaft Deflection I
Bearings I
Bearing Housing I
Piping I
Driver Lubrication --- See Mfgr’s Literature
Legend:
I = Inspect, Clean, Adjust, Repair or Replace as Necessary
C= Clean
R= Replace
* Service interval based on an intermittant duty cycle equal to approximately 4000 hours annually.
Adjust schedule as required for lower or higher duty cycles or extreme operating conditions.
Preventive Maintenance Schedule
Item Daily Weekly Monthly Semi-
Annually Annually
Service Interval*