GORMAN-RUPP SUPER T SERIES User manual

OM-05358-OE01
June 6, 2002
DS
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
INSTALLATION, OPERATION,
AND MAINTENANCE MANUAL
WITH PARTS LIST
SUPER T-SERIES PUMP
MODEL
T4A3S-F3L 1011

TABLE OF CONTENTS
i
INTRODUCTION PAGE I --- 1.................................................
SAFETY --- SECTION A PAGE A --- 1...........................................
INSTALLATION --- SECTION B PAGE B --- 1....................................
Pump Dimensions PAGE B --- 1.....................................................
PREINSTALLATION INSPECTION PAGE B --- 1............................................
Battery Specifications And Installation PAGE B --- 2....................................
POSITIONING PUMP PAGE B --- 2.......................................................
Lifting PAGE B --- 2.................................................................
Mounting PAGE B --- 2.............................................................
Clearance PAGE B --- 3.............................................................
SUCTION AND DISCHARGE PIPING PAGE B --- 3.........................................
Materials PAGE B --- 3..............................................................
Line Configuration PAGE B --- 3......................................................
Connections to Pump PAGE B --- 3..................................................
Gauges PAGE B --- 3...............................................................
SUCTION LINES PAGE B --- 3...........................................................
Fittings PAGE B --- 3...............................................................
Strainers PAGE B --- 3..............................................................
Sealing PAGE B --- 4...............................................................
Suction Lines In Sumps PAGE B --- 4.................................................
Suction Line Positioning PAGE B --- 4................................................
DISCHARGE LINES PAGE B --- 5........................................................
Siphoning PAGE B --- 5.............................................................
Valves PAGE B --- 5................................................................
Bypass Lines PAGE B --- 5..........................................................
AUTOMATIC AIR RELEASE VALVE PAGE B --- 6...........................................
Theory of Operation PAGE B --- 6....................................................
Air Release Valve Installation PAGE B --- 7............................................
ALIGNMENT PAGE B --- 8..............................................................
OPERATION --- SECTION C PAGE C --- 1......................................
PRIMING PAGE C --- 1.................................................................
STARTING PAGE C --- 1................................................................
OPERATION PAGE C --- 1..............................................................
Lines With a Bypass PAGE C --- 1....................................................
Lines Without a Bypass PAGE C --- 2.................................................
Leakage PAGE C --- 2..............................................................
Liquid Temperature And Overheating PAGE C --- 2.....................................
Strainer Check PAGE C --- 2.........................................................
Pump Vacuum Check PAGE C --- 3..................................................
STOPPING PAGE C --- 3................................................................
Cold Weather Preservation PAGE C --- 3..............................................
BEARING TEMPERATURE CHECK PAGE C --- 3..........................................

TABLE OF CONTENTS
(continued)
ii
TROUBLESHOOTING --- SECTION D PAGE D --- 1..............................
PREVENTIVE MAINTENANCE PAGE D --- 3...............................................
PUMP MAINTENANCE AND REPAIR --- SECTION E PAGE E --- 1................
PERFORMANCE CURVE PAGE E --- 1...................................................
PARTS LISTS:
Pump Model PAGE E --- 3..........................................................
Pump End Assembly PAGE E --- 5...................................................
Repair Rotating Assembly PAGE E --- 7...............................................
Drive Assembly PAGE E --- 8........................................................
PUMP AND SEAL DISASSEMBLY AND REASSEMBLY PAGE E --- 9.........................
Back Cover And Wear Plate Removal PAGE E --- 9.....................................
Suction Check Valve Removal PAGE E --- 10...........................................
Separating Pump End From Engine PAGE E --- 10......................................
Loosening Impeller PAGE E --- 10.....................................................
Rotating Assembly Removal PAGE E --- 11.............................................
Impeller Removal PAGE E --- 11......................................................
Seal Removal PAGE E --- 11..........................................................
Shaft and Bearing Removal and Disassembly PAGE E --- 11.............................
Shaft and Bearing Reassembly and Installation PAGE E --- 12............................
Seal Installation PAGE E --- 14........................................................
Impeller Installation PAGE E --- 16.....................................................
Rotating Assembly Installation PAGE E --- 16...........................................
Suction Check Valve Installation PAGE E --- 17.........................................
Back Cover Installation And Adjustment PAGE E --- 17..................................
Securing Pump End To Engine PAGE E --- 18..........................................
PRESSURE RELIEF VALVE MAINTENANCE PAGE E --- 19..................................
Final Pump Assembly PAGE E --- 19..................................................
LUBRICATION PAGE E --- 19.............................................................
Seal Assembly PAGE E --- 19.........................................................
Bearings PAGE E --- 19..............................................................
Engine PAGE E --- 20................................................................

SUPER T-SERIES OM--05358
PAGE I -- 1INTRODUCTION
INTRODUCTION
This Installation, Operation, and Maintenance
manual is designed to help you achieve the best
performance and longest life from your Gorman-
Rupp pump.
ThispumpisaSuperT-Series, semi-openimpeller,
self-primingcentrifugalmodelwitha suctioncheck
valve. The pump is close coupled to a Deutz F3L
1011 engine. The pump also is designed with ex-
ternal shimless adjusters for setting the wear plate
to impeller clearance. The pump is designed for
handling liquids containing large entrained solids
and slurries. The basic material of construction is
cast iron, with ductile iron impeller and steel wear-
ing parts.
If there are any questions regarding the pump or its application which are not covered in this manual or in
other literature accompanying this unit, please contact your Gorman-Rupp distributor, or write:
The Gorman-Rupp Company or Gorman-Rupp of Canada Limited
P.O. Box 1217 70 Burwell Road
Mansfield, Ohio 44901--1217 St. Thomas, Ontario N5P 3R7
Forinformationortechnicalassistanceonthepowersource,contactthepowersourcemanufacturer’slocal
dealer or representative.
The following are used to alert maintenance personnel to procedures which require special attention, to
those which could damage equipment, and to those which could be dangerous to personnel:
Immediate hazards whichWILL 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
result in minor personal injury or product
or property damage. These instructions
describe the requirements and the possi-
ble damage which could result from failure
to follow the procedure.
NOTE
Instructions to aid in installation, operation, and
maintenance or which clarify a procedure.

SUPER T SERIES OM--05142
PAGE A -- 1SAFETY
SAFETY --- SECTION A
This information applies to the Super T-
Series engine driven pumps. Refer to
the manual accompanying the engine
before attempting to begin operation.
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.
Beforeattemptingtoopenorservicethe
pump:
1. Familiarize yourself with this man-
ual.
2. Shut down the engine and discon-
nect the positive battery cable 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.
Thispumpisdesignedtohandleliquids
containing large entrained solids or
slurries.Donotattempttopumpvola-
tile, corrosive, or flammable materials
which may damage the pump or endan-
ger personnel as a result of pump fail-
ure.
After the pump has been positioned,
make certain that the pump and all pip-
ing connections are tight, properly sup-
ported and secure before operation.
Do not operate the pump without the
guards in place over the rotating parts.
Exposed rotating parts can catch cloth-
ing, fingers, or tools, causing severe in-
jury to personnel.
Do not remove plates, covers, gauges,
pipe plugs, or fittings from an over-
heatedpump. Vaporpressure withinthe
pump can cause parts being disen-
gaged to be ejected with great force. Al-
low the pump to cool before servicing.
Do not operate the pump against a
closed discharge valve for long periods
oftime.Ifoperatedagainstacloseddis-
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.

SUPER T SERIESOM--05358
PAGE A -- 2 SAFETY
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.
Thispumpisdesignedtohandlemateri-
al which could cause illness throughdi-
rect exposure or emitted fumes. Wear
adequate protective clothing when
working on the pump or piping.
Do not operate an internal combustion
engine in an explosive atmosphere.
When operating internal combustion
engines in an enclosed area, make cer-
tain that exhaust fumes are piped to the
outside. These fumes contain carbon
monoxide, a deadly gas that is color-
less, tasteless, and odorless.
Fuel used by internal combustion en-
gines presents an extreme explosion
andfirehazard.Makecertainthatallfuel
linesare securelyconnectedandfreeof
leaks. Never refuel a hot or running en-
gine. Avoid overfilling the fuel tank. Al-
ways use the correct type of fuel.
Never tamper with the governor to gain
more power. The governor establishes
safe operating limits that should not be
exceeded. The maximum continuous
operating speed for this pump is 1950
RPM.
Pumps and related equipment must be in-
stalled and operated according to all na-
tional, local and industry standards.

OM--05358SUPER T-SERIES
PAGE B -- 1INSTALLATION
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 ar-
range the pump and piping.
Most of the information pertains to a standard
static lift application where the pump is posi-
tioned above the free levelof liquid tobe pumped.
If installed in a flooded suction application 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,
be sure to limit the incoming pressure to 50% of
the maximum permissible operating pressure as
shown on the pump performance curve.
For furtherassistance, contact yourGorman-Rupp
distributor or the Gorman-Rupp Company.
Pump Dimensions
SeeFigure1fortheapproximatephysicaldimen-
sionsofthispump.
OUTLINE DRAWING
Figure 1. Pump Model T4A3S-F3L 1011
PREINSTALLATION INSPECTION
The pump assemblywasinspected and testedbe-
fore shipment from the factory. Before installation,
inspect the pump for damage which may haveoc-
curred during shipment. Check as follows:
a. Inspectthepump forcracks,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.

OM--05358 SUPER T-SERIES
PAGE B -- 2 INSTALLATION
c. Carefullyread all warnings and cautions con-
tained in this manual or affixed to the pump,
and perform all duties indicated.
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.Ifthepumpandpowersourcehavebeen
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.
If the maximum shelf life has been exceeded, or if
anything appears to be abnormal, contact your
Gorman-Rupp distributor or the factory to deter-
mine the repair or updating policy. Do not put the
pump into service until appropriate action has
been taken.
Battery Specifications And Installation
Unless otherwise specified on the pump order, the
engine battery was not included with the unit. Re-
fer to the following specifications when selecting a
battery.
Table B-1. Battery Specifications
Crank
@0
_F
Reserve
Capacity
(Minutes)
@80
_FOverall
Dims.
(Inches)
350---385 76
10.25L
Cold
Amps
Approx.
Amp/
Hr.
Rating
57 6.75W
8.88H
x
x
Voltage
12 Volts
Refer to the information accompanying the battery
and/orelectrolytesolutionforactivation andcharg-
ing instructions.
Before installing the battery, clean the positive and
negative cable connectors, and the battery termi-
nals. Secure the battery by tightening the
holddown brackets. The terminals and clamps
may be coated with petroleum jelly toretard corro-
sion. Connect and tighten the positive cable first,
then the negative cable.
POSITIONING PUMP
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.
Lifting
Use lifting equipment with a capacity of at least
8,450 pounds (3832 kg). This pump weighs ap-
proximately1,686 pounds (765 kg), not including
the weight of accessories, and optional wheel kit.
Customerinstalledequipmentsuchassuctionand
discharge piping must be removed before at-
tempting to lift.
Thepumpassemblycanbeseriously
damagedifthecablesorchainsusedtolift
andmovetheunitareimproperlywrapped
around the pump.
Mounting
Locatethepumpinanaccessibleplaceascloseas
practical tothe liquid being pumped. Level mount-
ing is essential for proper operation.
The pump may have to be supported or shimmed
to provide for level operation or to eliminate vibra-
tion.
If the pump has been mounted on a moveable
base,makecertainthebaseisstationarybysetting
the brake and blocking the wheels before attempt-
ing to operate the pump.
To ensure sufficient lubrication and fuel supply to
the engine, do not position the pump and engine
more than 15_off horizontal for continuous opera-
tion. The pump and engine may be positioned up
to 30_off horizontal for intermittent operation
only;however, theenginemanufacturershouldbe
consulted for continuous operation at angles
greater than 15_.

OM--05358SUPER T-SERIES
PAGE B -- 3INSTALLATION
Clearance
It is recommended that 18 inches (457 mm) of
clearance be providedin front of the back coverto
permitremovalofthecoverandeasyaccess tothe
pump interior. A minimum clearance of 9inches
(229mm)must bemaintainedtopermit removalof
the cover.
SUCTION AND DISCHARGE PIPING
Pump performance is adversely effected by in-
creased suction lift, discharge elevation, and fric-
tion losses. See the performance curve and oper-
ating range shown on Page E-1 to be sure your
overall application allows pump to operate within
thesafeoperationrange.
Materials
Either pipe or hose maybe used for suction and
discharge lines; however, the materials must be
compatiblewiththeliquidbeingpumped.Ifhoseis
used in suction lines, it must be the rigid-wall, rein-
forced type toprevent collapse under suction. Us-
ing piping couplings in suction lines is not recom-
mended.
Line Configuration
Keep suction and discharge lines as straight as
possible to minimize friction losses. Make mini-
mum use of elbows and fittings, which substan-
tiallyincreasefrictionloss.Ifelbowsarenecessary,
use the long-radius type to minimize friction loss.
Connections to Pump
Before tightening a connecting flange, align it ex-
actly with the pump port. Never pulla pipe line into
place by tightening the flange bolts and/or cou-
plings.
Lines near the pump must be independently sup-
ported to avoid strain on the pump which could
cause excessive vibration, decreased bearing life,
and increased shaft and seal wear. If hose-type
linesareused,theyshouldhaveadequatesupport
to secure them when filled with liquid and under
pressure.
Gauges
Most pumps are drilled and tapped for installing
dischargepressureandvacuumsuctiongauges.If
these gauges are desired for pumps that are not
tapped, drill and tap the suction and discharge
lines not less than 18 inches (457,2 mm) from the
suction and discharge ports and install the lines.
Installation closer tothe pump may result in erratic
readings.
SUCTION LINES
Toavoidairpocketswhichcouldaffectpumpprim-
ing, the suction line must be as short and direct as
possible.Whenoperationinvolvesasuctionlift,the
line must always slope upward to the pump from
the source of the liquid being pumped; if the line
slopes down to the pump at any point along the
suction run, air pockets will be created.
Fittings
Suction linesshouldbe the same size as the pump
inlet. If reducers are used in suction lines, they
should be the eccentric type, and should be in-
stalled withthe flatpart ofthe reducersuppermost
to avoid creating air pockets. Valves are not nor-
mally used in suction lines, but if a valve is used,
install it with the stem horizontal to avoid air pock-
ets.
Strainers
If a strainer is furnished with the pump, be certain
touseit;anysphericalsolidswhichpassthrougha
strainer furnished with the pump will also pass
through the pump itself.
If a strainer is not furnished with the pump, but is
installed by the pump user, make certain that the
total area of the openings in the strainer is at least
three or four times the cross section of the suction
line, and that the openings will not permit passage
of solids larger than the solids handling capability
of the pump.
This pump is designedto handleup to 3 inch (76,2
mm) diameter spherical solids.

OM--05358 SUPER T-SERIES
PAGE B -- 4 INSTALLATION
Sealing
Since even a slight leak will affect priming, head,
and capacity, especially when operating with a
high suction lift, all connections in the suction line
should be sealed with pipe dope to ensure an air-
tight seal. Follow the sealant manufacturer’s rec-
ommendations when selecting and applying the
pipe dope. The pipe dope should be compatible
with the liquid being pumped.
Suction Lines In Sumps
If a single suction line is installed in a sump, it
should be positioned away from the wall of the
sump at a distance equal to1 1/2 times the diame-
ter of the suction line.
If there is a liquid flow from an open pipe into the
sump, the flow should be kept away from the suc-
tion inlet because the inflow will carryair downinto
the sump, and air entering the suction line will re-
duce pump efficiency.
If it is necessary to position inflow close to the suc-
tioninlet, install a baffle between the inflow and the
suction inlet at a distance 1 1/2 times the diameter
of the suction pipe. The baffle will allow entrained
air to escape from the liquid before it is drawn into
the suction inlet.
If two suction lines are installed in a single sump,
theflowpathsmayinteract,reducingtheefficiency
of one or both pumps. To avoid this, position the
suction inlets so that they are separated by a dis-
tance equal to at least 3 times the diameter of the
suction pipe.
Suction Line Positioning
The depth of submergence of the suction line is
critical to efficient pump operation. Figure 2 shows
recommended minimum submergence vs. veloc-
ity.
NOTE
The pipe submergence required may be reduced
by installing a standard pipe increaser fitting at the
end of thesuction line. The larger opening size will
reduce the inlet velocity. Calculate the required
submergence using the following formula based
on the increased opening size (area or diameter).
Figure 2. Recommended Minimum Suction Line Submergence vs. Velocity

OM--05358SUPER T-SERIES
PAGE B -- 5INSTALLATION
DISCHARGE LINES
Siphoning
Do not terminate the discharge line at a level lower
than that of the liquid being pumped unless a si-
phon breaker is used in the line. Otherwise, a si-
phoning action causing damage to the pump
could result.
Valves
If a throttling valve is desired in the discharge line,
useavalveaslargeasthelargestpipetominimize
friction losses. Never install a throttling valve in a
suction line.
Withhighdischargeheads,itisrecommendedthat
a throttling valve and a system check valve be in-
stalled in the discharge line to protect the pump
from excessive shock pressure and reverse rota-
tion when it is stopped.
If the application involves a high discharge
head, gradually close the discharge
throttling valve before stopping the pump.
Bypass Lines
Self-priming pumps are not air compressors. Dur-
ing the priming cycle, air from the suction line must
be vented to atmosphere on the discharge side. If
the discharge line is open, this air will be vented
through the discharge. However, if a check valve
has been installed in the discharge line, the dis-
chargesideofthepumpmustbeopenedtoatmos-
phericpressurethroughabypasslineinstalledbe-
tween the pump discharge and the check valve.A
self-priming centrifugal pump will not prime if
there is sufficient static liquid head to hold the dis-
charge check valve closed.
NOTE
The bypass line should be sized so that it does not
affect pump discharge capacity; however, the by-
pass line should be at least 1 inch in diameter to
minimize the chance of plugging.
Inlow discharge head applications (less than 30
feet or 9 meters), it is recommended that the by-
pass line be run back to the wet well, and located 6
inches below the water level or cut-off point of the
low level pump. In some installations, this bypass
line may be terminated with a six-to-eight foot
length of 11/4inch I.D.smooth-borehose;airand
liquid vented during the priming process will then
agitate the hose and break up any solids, grease,
or other substances likely to cause clogging.
Abypasslinethatisreturnedtoawetwell
must be secured against being drawn into
the pump suction inlet.
It is also recommended that pipe unions be in-
stalled at each 90_elbow in a bypass line to ease
disassembly and maintenance.
In high discharge head applications (more than
30 feet), an excessive amount of liquid may be by-
passed and forced back to the wet well under the
full working pressure of the pump; this willreduce
overallpumpingefficiency. Therefore, itisrecom-
mended that a Gorman-Rupp Automatic Air Re-
lease Valve be installed in the bypass line.
Gorman-Rupp Automatic Air Release Valves are
reliable, and require minimum maintenance. See
AUTOMATIC AIRRELEASE VALVE in this section
for installation and theory of operation of the Auto-
matic Air Release Valve. Consult your Gorman-
Rupp distributor, or contact the Gorman-Rupp
CompanyforselectionofanAutomaticAirRelease
Valve to fit your application.
If theinstallation involvesafloodedsuction suchas
abelow-groundliftstation.Apipeunionandmanu-
alshut-off valvemaybeinstalledinthebleedlineto
allowserviceofthevalvewithoutshuttingdownthe
station, and to eliminate the possibility of flooding.
If a manual shut-off valve is installed anywhere in
theairreleasepiping, it mustbeafull-openingball
type valve to prevent plugging by solids.

OM--05358 SUPER T-SERIES
PAGE B -- 6 INSTALLATION
If a manual shut-off valve is installed in
a bypass line, it must not be left closed
duringoperation.Aclosedmanualshut-
off valve may cause a pump which has
lost prime to continue to operate with-
out reaching prime, causing dangerous
overheating and possible explosive
rupture of the pump casing. Personnel
could be severely injured.
Allow an over-heated pump to cool be-
fore servicing.Do not remove plates,
covers,gauges,orfittingsfromanover-
heated pump. Liquid within the pump
can reachboiling temperatures,andva-
porpressurewithin the pump cancause
parts being disengaged to be ejected
with great force. After the pump cools,
drain the liquid from the pump by re-
moving the casing drain plug. Use cau-
tion when removing the plug to prevent
injury to personnel from hot liquid.
AUTOMATIC AIR RELEASE VALVE
When properly installed and correctly adjusted to
the specific hydraulic operating conditions of the
application, the Gorman-Rupp Automatic Air Re-
leaseValvewillpermitairtoescapethroughtheby-
pass line, and then close automatically when the
pump is fully primed and pumping at full capacity.
Theory of Operation
Figures 3 and 4 show a cross-sectional view of the
AutomaticAir Release Valve, and a corresponding
description of operation.
Duringthe primingcycle, air fromthe pump casing
flowsthroughthebypassline,andpassesthrough
theAirReleaseValvetothewetwell(Figure3).
Figure3.ValveinOpenPosition
When the pump is fully primed, pressure resulting
from flow against the valve diaphragm com-
presses the spring and closes the valve (Figure 4).
The valve will remain closed, reducing the bypass
of liquid to 1 to 5 gallons (3.8 to 19 liters) per min-
ute, until the pump loses its prime or stops.
Figure 4. Valve in Closed Position
Some leakage (1 to 5 gallons [3.8 to 19
liters] per minute) will occur when the
valve is fullyclosed.Be sure the bypass
line is directed back to the wet well or
tank to prevent hazardous spills.
Whenthepumpshutsdown,thespringreturnsthe
diaphragm to its original position. Any solids that
mayhave accumulated in the diaphragm chamber
settle to the bottom and are flushed out duringthe
next priming cycle.
NOTE
The valve will remain open if the pump does not
reach its designed capacity or head. Valve closing
pressureis dependent upon the discharge head of
the pump at full capacity. The range of the valve
closing pressure is established by the tension rate
ofthespringasorderedfromthefactory.Valveclos-

OM--05358SUPER T-SERIES
PAGE B -- 7INSTALLATION
ing pressure can be further adjusted to the exact
system requirements by moving the spring retain-
ing pin up or down the plunger rod to increase or
decrease tension on the spring. Contact your Gor-
man-Rupp distributor or the Gorman-Rupp Com-
pany for information about an Automatic Air Re-
lease Valve for your specific application.
Air Release Valve Installation
The Automatic Air Release Valve must be inde-
pendently mounted in a horizontal position and
connected to the discharge line of the self-priming
centrifugal pump (see Figure 5).
NOTE
IftheAirReleaseValveistobeinstalledonastaged
pump application, contact the factory for specific
installation instructions.
DISCHARGE PIPE
DISCHARGE
CHECK VALVE
PUMP DISCHARGE
SELF-PRIMING
CENTRIFUGAL
PUMP
SUCTION
LINE
SUPPORT
BRACKET
CLEAN-OUT
COVER
INSTALL AIR RELEASE VALVE
IN HORIZONTAL POSITION
90_LONG
RADIUS
ELBOW
BLEED LINE 1”
(25,4 MM) DIA. MIN.
(CUSTOMER
FURNISHED)
EXTEND 6”
(152,4 MM)
BELOW LIQUID
WET WELL
OR SUMP
LEVEL SURFACE
Figure 5. Typical Automatic Air Release Valve Installation
The valve inlet line must be installed between the
pumpdischargeportandthenon-pressurizedside
of the discharge check valve. The valve inlet is at
thelargeendofthevalvebody,andisprovided
with standard 1-inch NPT pipe threads.
The valve outlet is located at the opposite end of
the valve, and is also equipped with standard
1-inchNPTpipe threads.The outletshouldbecon-
nectedtoableedlinewhichslopesbacktothewet
well orsump. The bleed line must be the same size
astheinletpiping,orlarger. Ifpipingisusedforthe
bleed line, avoid the use of elbows whenever pos-
sible.
NOTE
It is recommended that each Air Release Valve be
fitted with an independent bleeder line directed
back to the wet well. Contact your Gorman-Rupp
distributor or the Gorman-Rupp Company for infor-
mation about installation of an Automatic Air Re-
lease Valve for your specific application.

OM--05358 SUPER T-SERIES
PAGE B -- 8 INSTALLATION
ALIGNMENT
The alignment of the pump and the engine is criti-
calfortrouble-free mechanicaloperation. SeeSec-
tionE,Securing Pump EndTo Engine fordetailed
information.

SUPER T-SERIES OM--05358
OPERATION PAGE C -- 1
OPERATION --- SECTION C
Review all SAFETY information in Section A.
Follow the instructions on all tags, labels and de-
cals attached to the pump.
Thispumpisdesignedtohandleliquids
containing large entrained solids and
slurries.Donotattempttopumpvola-
tile, corrosive, or flammable liquids
which may damage the pump or endan-
ger personnel as a result of pump fail-
ure.
Never tamper with the governor to gain
more power. The governor establishes
safe operating limits that should not be
exceeded. The maximum continuous
operating speed for this pump is 1950
RPM.
PRIMING
Install the pump and piping as described in IN-
STALLATION. Make sure that the piping connec-
tions are tight, and that the pump is securely
mounted. Check that the pump is properly lubri-
cated (see LUBRICATION in MAINTENANCE
AND REPAIR).
This pump is self-priming, but the pump should
never be operated unless there is liquid in the
pump casing.
Never operate this pump unless there is
liquid in the pump casing. The pump will
not prime when dry. extended operation of
a dry pump will destroy theseal assembly.
Add liquid to the pump casing when:
1. The pump is being put into service for the
first time.
2. Thepumphas notbeenusedforaconsider-
able length of time.
3. The liquid in the pump casing has evapo-
rated.
Once the pump casing has been filled, the pump
will prime and reprime as necessary.
After filling the pump casing, reinstall
and tighten the fill plug. Do not attempt
to operate the pump unless allconnect-
ing piping is securely installed. Other-
wise, liquid in the pump forced out
under pressure could cause injury to
personnel.
To fill the pump, remove the pump casing fillcover
or fill plug in the top of the casing, and add clean
liquid until the casing is filled. Replace the fill cover
or fill plug before operating the pump.
STARTING
Consult the operations manual furnished with the
engine.
OPERATION
Either a Gorman-Rupp automaticair release valve
orahandoperatedshutoffvalvemaybeinstalledin
abypassline.
Lines With a Bypass
IfaGorman-RuppAutomaticAirReleaseValvehas
been installed, the valve will automatically open to
allow the pump to prime, and automatically close
after priming is complete (see INSTALLATION for
Air Release Valve operation).
If the bypass line is open, air from the suction line
willbe discharged through the bypass line back to

SUPER T-SERIESOM--05358
OPERATIONPAGE C -- 2
the wet well during the priming cycle. Liquid will
then continue to circulate through the bypass line
while the pump is in operation.
Lines Without a Bypass
Open all valves in the discharge line and start the
power source. Priming is indicated by a positive
reading on the discharge pressure gauge or by a
quieter operation. The pump maynot primeimme-
diately because the suction line must first fill with
liquid.If thepumpfails toprimewithin five minutes,
stop it and check the suction line for leaks.
Afterthepump hasbeenprimed,partiallyclosethe
discharge line throttling valve in order to fill the line
slowly and guard against excessive shock pres-
sure which could damage pipe ends, gaskets,
sprinkler heads, and any other fixtures connected
to the line. When the discharge line is completely
filled,adjustthethrottlingvalvetothe requiredflow
rate.
Do not operate the pump against a
closed discharge throttling valve for
long periods oftime.If operatedagainst
a closed discharge throttling valve,
pump components will deteriorate, and
the liquid could come to a boil, build
pressure,andcausethepumpcasingto
rupture or explode.
Leakage
No leakage should be visible at pump mating sur-
faces, or at pump connections or fittings. Keep all
lineconnectionsandfittingstighttomaintainmaxi-
mum pump efficiency.
Liquid Temperature And Overheating
The maximum liquid temperature for this pump is
160_F(71_C). Do not applyit at a higheroperating
temperature.
Overheating can occur if operated with the valves
in the suction or discharge lines closed. Operating
against closed valves could bring the liquid to a
boil, build pressure, and cause the pump to rup-
ture or explode. If overheating occurs, stop the
pump and allow it to cool before servicing it. Refill
the pump casing with cool liquid.
Allow an over-heated pump to cool be-
fore servicing.Do not remove plates,
covers,gauges,orfittingsfromanover-
heated pump. Liquid within the pump
can reachboiling temperatures,andva-
porpressurewithin the pump cancause
parts being disengaged to be ejected
with great force. After the pump cools,
drain the liquid from the pump by re-
moving the casing drain plug. Use cau-
tion when removing the plug to prevent
injury to personnel from hot liquid.
As asafeguard against rupture or explosion dueto
heat, this pump is equipped with a pressure relief
valve which will open if vapor pressure within the
pumpcasingreachesacriticalpoint.Ifoverheating
does occur, stop the pump immediately and allow
it to cool before servicing it. Approach any over-
heated pump cautiously. It is recommended that
the pressure relief valve assembly be replaced at
each overhaul, or any time the pump casing over-
heats and activates the valve. Never replace this
valve with a substitute which has not been speci-
fied or provided by the Gorman-Rupp Company.
Strainer Check
If a suction strainer has been shipped with the
pump or installed by the user, check the strainer
regularly, and clean it as necessary. The strainer
shouldalsobecheckedifpumpflowratebeginsto
drop. If a vacuum suction gauge has been in-
stalled, monitor and record the readings regularly
to detect strainer blockage.
Never introduce air or steam pressure into the
pump casing or piping to remove a blockage. This
could result in personal injury or damage to the

SUPER T-SERIES OM--05358
OPERATION PAGE C -- 3
equipment. If backflushing is absolutely neces-
sary, liquid pressure must be limited to 50% of the
maximum permissible operating pressure shown
on the pump performance curve.
Pump Vacuum Check
Withthepumpinoperative,installa vacuumgauge
in the system, using pipe dope on the threads.
Block the suction line andstart the pump. At oper-
ating speed the pump should pull a vacuum of 20
inches (508,0 mm) or more of mercury. If it does
not, check for air leaks in the seal, gasket, or dis-
charge valve.
Openthesuctionline,andread thevacuumgauge
with the pump primed and at operation speed.
Shut off the pump. The vacuumgauge reading will
immediately drop proportionate to static suction
lift,andshouldthenstabilize.Ifthevacuumreading
falls off rapidly after stabilization, an air leak exists.
Before checking for the source of the leak, check
the point of installation of the vacuum gauge.
STOPPING
Never halt the flow of liquid suddenly. If the liquid
being pumped is stopped abruptly, damaging
shock waves can be transmitted to the pump and
piping system. Close all connecting valves slowly.
On engine driven pumps, reduce the throttle
speedslowlyandallowtheenginetoidlebrieflybe-
fore stopping.
If the application involves a high discharge
head, gradually close the discharge
throttling valve before stopping the pump.
Afterstoppingthepump,switchofftheengineigni-
tion and remove the key to ensure that the pump
will remain inoperative.
Do not operate the pump against a
closed discharge throttling valve for
long periods oftime.If operatedagainst
a closed discharge throttling valve,
pump components will deteriorate, and
the liquid could come to a boil, build
pressure,andcausethepumpcasingto
rupture or explode.
Cold Weather Preservation
In below freezing conditions, drain the pump to
prevent damage from freezing. Also, clean out any
solids by flushing with a hose. Operate the pump
for approximately one minute; this will remove any
remaining liquid that could freeze the pump rotat-
ing parts. If the pump will be idle for more than a
few hours, or if it has been pumping liquids con-
taining a large amount of solids, drain the pump,
and flush it thoroughly with clean water. To prevent
large solids from clogging the drain port and pre-
venting the pump from completely draining, insert
a rod or stiff wire in the drain port, and agitate the
liquid during the draining process. Clean out any
remaining solids by flushing with a hose.
BEARING TEMPERATURE CHECK
Bearings normallyrun at higher than ambient tem-
peratures because of heat generated by friction.
Temperatures up to 160_F(71_C) are considered
normalforbearings,andtheycanoperatesafelyto
at least 180_F(82_C).
Checkingbearingtemperaturesbyhandisinaccu-
rate. Bearing temperatures can be measured ac-
curately by placing a contact-type thermometer
against the housing. Record this temperature for
future reference.
A sudden increase in bearing temperature is a
warning that the bearings are at thepoint offailing
to operate properly. Make certain that the bearing
lubricant is of the proper viscosity and at the cor-
rect level (see LUBRICATION in MAINTENANCE
AND REPAIR). Bearing overheating can also be
caused by shaft misalignmentand/or excessivevi-
bration.
When pumps are first started, the bearings may
seem to run at temperatures above normal. Con-
tinued operation should bring the temperatures
down to normal levels.

SUPER T-SERIES OM--05358
TROUBLESHOOTING PAGE D -- 1
TROUBLESHOOTING --- SECTION D
Review all SAFETY information in Section A.
Beforeattemptingtoopenorservicethe
pump:
1. Familiarize yourselfwith thismanual.
2. Shut down the engine and discon-
nect the positive battery cable and
take other precautions 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.
TROUBLE POSSIBLE CAUSE PROBABLE REMEDY
PUMP FAILS
TO PRIME
Suction check valve contaminated or
damaged. Clean or replace check valve.
Air leak in suction line.
Lining of suction hose collapsed.
Correct leak.
Replace suction hose.
Leaking or worn seal or pump gasket. Check pump vacuum. Replace
leakingorwornsealorgasket.
Suction lift or discharge head too high. Check piping installation and in-
stall bypass line if needed. See
INSTALLATION.
Strainer clogged. Check strainer and clean if neces-
sary.
Not enough liquid in casing. Add liquid to casing. See PRIM-
ING.
PUMP STOPS OR
FAILS TO DELIVER
RATED FLOW OR
PRESSURE
Air leak in suction line.
Lining of suction hose collapsed.
Correct leak.
Replace suction hose.
Leaking or worn seal or pump gasket. Check pump vacuum. Replace
leakingorwornsealorgasket.

OM--05358 SUPER T-SERIES
TROUBLESHOOTINGPAGE D -- 2
TROUBLE POSSIBLE CAUSE PROBABLE REMEDY
PUMP REQUIRES
TOO MUCH
POWER
PUMP CLOGS
FREQUENTLY
Impellerorotherwearingpartsworn
or damaged. Replace worn or damaged parts. Check that impeller is properly
centered and rotates freely.
Impeller clogged. Free impeller of debris.
Pump speed too slow. Check driver output; check belts
or couplings for slippage.
Discharge head too high. Install bypass line.
Suction lift too high. Measureliftw/vacuumgauge.Re-
duce lift and/or friction losses in
suction line.
Pump speed too high. Check driver output; check that
sheaves or couplings are cor-
rectly sized.
Discharge head too low. Adjust discharge valve.
Liquid solution too thick. Dilute if possible.
Bearing(s) frozen. Disassemble pump and check
bearing(s).
Liquid solution too thick. Dilute if possible.
Discharge flow too slow. Open discharge valve fully to in-
crease flow rate, and run power
source at maximum governed
speed.
Suction check valve or foot valve
clogged or binding. Clean valve.
PUMP STOPS OR
FAILS TO DELIVER
RATED FLOW OR
PRESSURE
Strainer clogged. Check strainer and clean if neces-
sary.
Suction intake not submerged at
proper level or sump too small. Check installation and correctsub- mergence as needed.
EXCESSIVE NOISE Cavitation in pump.
Impeller clogged or damaged.
Pump or drive not securely mounted.
Pumping entrained air.
Reduce suction lift and/or friction
losses in suction line. Record vac-
uum and pressure gaugereadings
and consult local representative or
factory.
Locateand eliminatesourceof air
bubble.
Secure mounting hardware.
Clean out debris; replace dam-
aged parts.

SUPER T-SERIES OM--05358
TROUBLESHOOTING PAGE D -- 3
TROUBLE POSSIBLE CAUSE PROBABLE REMEDY
BEARINGS RUN
TOO HOT Bearing temperature is high, but
within limits. Check bearing temperature regu- larly to monitor any increase.
Low or incorrect lubricant. Check for proper type and level of
lubricant.
Suction and discharge lines not
properly supported. Check piping installation for proper support.
Drive misaligned. Align drive properly.
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
bedocumentedateachinspectionforcomparison
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.