GORMAN‐RUPP OF CANADA LIMITED D ST. THOMAS, ONTARIO, CANADAPrinted in U.S.A.
e2005 The Gorman‐Rupp Company
Page 2
Register your new
Gorman‐Rupp pump online at
www.grpumps.com
Valid serial number and e‐mail address required.
The engine exhaust from this
product contains chemicals
known to the State of California to
cause cancer, birth defects or
other reproductive harm.
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:
Page 3
TABLE OF CONTENTS
INTRODUCTIONPAGE I - 1.................................................
SAFETY ‐ SECTION APAGE A - 1............................................
INSTALLATION - SECTION BPAGE B - 1....................................
Pump DimensionsPAGE B - 1.....................................................
PREINSTALLATION INSPECTIONPAGE B - 2............................................
Battery Specifications And InstallationPAGE B - 2....................................
POSITIONING PUMPPAGE B - 2.......................................................
LiftingPAGE B - 2.................................................................
MountingPAGE B - 3.............................................................
ClearancePAGE B - 3.............................................................
SUCTION AND DISCHARGE PIPINGPAGE B - 3.........................................
MaterialsPAGE B - 3..............................................................
Line ConfigurationPAGE B - 3......................................................
Connections to PumpPAGE B - 3..................................................
GaugesPAGE B - 3...............................................................
SUCTION LINESPAGE B - 3...........................................................
FittingsPAGE B - 3...............................................................
StrainersPAGE B - 4..............................................................
SealingPAGE B - 4...............................................................
Suction Lines In SumpsPAGE B - 4.................................................
Suction Line PositioningPAGE B - 4................................................
FLOAT SWITCHESPAGE B - 5.........................................................
InstallationPAGE B - 5............................................................
OPTIONAL SUBMERSIBLE TRANSDUCERPAGE B - 6...................................
DISCHARGE LINESPAGE B - 7........................................................
SiphoningPAGE B - 7.............................................................
ValvesPAGE B - 7................................................................
Bypass LinesPAGE B - 7..........................................................
AUTOMATIC AIR RELEASE VALVEPAGE B - 8...........................................
Theory of OperationPAGE B - 8....................................................
Air Release Valve InstallationPAGE B - 9............................................
ALIGNMENTPAGE B - 10..............................................................
OPERATION - SECTION CPAGE C - 1......................................
PRIMINGPAGE C - 1.................................................................
STARTINGPAGE C - 2................................................................
Manual StartingPAGE C - 2........................................................
Automatic StartingPAGE C - 2.....................................................
OPTIONAL EPS CONTROLPAGE C - 3.................................................
FeaturesPAGE C - 3..............................................................
Functional DescriptionPAGE C - 3..................................................
EPS FunctionsPAGE C - 4.........................................................
EPS CalibrationPAGE C - 4........................................................
Zero AdjustmentPAGE C - 4.......................................................
Span AdjustmentPAGE C - 5......................................................
Level AdjustmentPAGE C - 5......................................................
i
Page 4
TABLE OF CONTENTS
(continued)
Horn DelayPAGE C - 5............................................................
OPERATIONPAGE C - 5..............................................................
Lines With a BypassPAGE C - 5....................................................
Lines Without a BypassPAGE C - 5.................................................
LeakagePAGE C - 5..............................................................
Liquid Temperature And OverheatingPAGE C - 6.....................................
Strainer CheckPAGE C - 6.........................................................
Pump Vacuum CheckPAGE C - 6..................................................
STOPPINGPAGE C - 6................................................................
Manual StoppingPAGE C - 6.......................................................
Automatic StoppingPAGE C - 6....................................................
Safety Shutdown SystemPAGE C - 7...............................................
OPERATION IN EXTREME HEATPAGE C - 7............................................
Cold Weather PreservationPAGE C - 7..............................................
BEARING TEMPERATURE CHECKPAGE C - 8..........................................
TROUBLESHOOTING - SECTION DPAGE D - 1..............................
PREVENTIVE MAINTENANCEPAGE D - 3...............................................
PUMP MAINTENANCE AND REPAIR ‐ SECTION EPAGE E - 1.................
STANDARD PERFORMANCE CURVEPAGE E - 1........................................
PARTS LISTS:
Pump ModelPAGE E - 3..........................................................
Power Unit KitPAGE E - 5.........................................................
Pump End AssyPAGE E - 7........................................................
Repair Rotating AssyPAGE E - 9...................................................
Drive AssyPAGE E - 10............................................................
PUMP AND SEAL DISASSEMBLY AND REASSEMBLYPAGE E - 11.........................
Back Cover And Wear Plate RemovalPAGE E - 11.....................................
Suction Check Valve RemovalPAGE E - 12...........................................
Separating Intermediate And Drive Assembly From EnginePAGE E - 12..................
Loosening ImpellerPAGE E - 12.....................................................
Rotating Assembly RemovalPAGE E - 13.............................................
Impeller RemovalPAGE E - 13......................................................
Seal RemovalPAGE E - 13..........................................................
Shaft and Bearing Removal and DisassemblyPAGE E - 14.............................
Shaft and Bearing Reassembly and InstallationPAGE E - 15............................
Seal InstallationPAGE E - 16........................................................
Impeller InstallationPAGE E - 19.....................................................
Rotating Assembly InstallationPAGE E - 19...........................................
Suction Check Valve InstallationPAGE E - 19.........................................
Back Cover Installation And AdjustmentPAGE E - 19..................................
Securing Pump End To EnginePAGE E - 20..........................................
PRESSURE RELIEF VALVE MAINTENANCEPAGE E - 21..................................
Final Pump AssemblyPAGE E - 22..................................................
LUBRICATIONPAGE E - 22.............................................................
Seal AssemblyPAGE E - 22.........................................................
BearingsPAGE E - 22..............................................................
EnginePAGE E - 22................................................................
ii
Page 5
SUPER T SERIES
OM-05514
INTRODUCTION
Thank You for purchasing a Gorman‐Rupp 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.
This Installation, Operation, and Maintenance
manual is designed to help you achieve the best
performance and longest life from your Gorman‐
Rupp pump.
This pump is a Super T Series, semi‐open impeller,
self‐priming centrifugal model with a suction check
valve. The pump also is designed with external
shimless adjusters for setting the wear plate to im
peller clearance. The pump is close coupled to a
Deutz F4L diesel engine, and is designed for han
dling dirty water containing specified entrained sol
ids and slurries. The basic material of construction
is gray iron, with ductile iron impeller and steel
wearing parts.
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.
For information or technical assistance on the en
gine, contact the engine manufacturer's local
dealer or representative.
The following are used to alert maintenance per
sonnel to procedures which require special atten
tion, 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.
If there are any questions regarding the pump or
its application which are not covered in this man
ual or in other literature accompanying this unit,
please contact your Gorman‐Rupp distributor, or
write:
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
Hazards or unsafe practices which COULD
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.
PAGE I - 1INTRODUCTION
Page 6
SUPER T SERIES
OM-05514
SAFETY ‐ SECTION A
This information applies to Super T Se
ries engine driven pumps. Refer to the
manual accompanying the engine be
fore 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.
Before attempting to open or service the
pump:
1. Familiarize yourself with this man
ual.
2. Set the HAND‐OFF‐AUTO switch to
`OFF', and disconnect 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.
during automatic operation. Disconnect
the positive battery cable before per
forming any maintenance. Failure to do
so may result in serious personal injury.
This pump is designed to handle dirty
water containing specified entrained
solids. Do not attempt to pump volatile,
corrosive, or flammable liquids which
may damage the pump or endanger per
sonnel as a result of pump failure.
Use lifting and moving equipment in
good repair and with adequate capacity
to prevent injuries to personnel or dam
age to equipment. The bail is intended
for use in lifting the pump assembly
only. Suction and discharge hoses and
piping must be removed from the pump
before lifting.
After the unit has been installed, make
certain that the pump and all piping or
hose connections are tight, properly
supported and secure before operation.
This pump is equipped with an automat
ic starting system, and is subject to au
tomatic restart. Keep hands and cloth
ing away from the unit to prevent injury
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
Page 7
SUPER T SERIESOM-05514
Do not remove plates, covers, gauges,
pipe plugs, or fittings from an over
heated pump. Vapor pressure within the
pump can cause parts being disen
gaged to be ejected with great force. Al
low the pump to cool before servicing.
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
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. Always 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 1700
RPM.
PAGE A - 2SAFETY
Page 8
SUPER T SERIESOM-05514
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 positioned
above the free level of 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 mounting, line
configuration, and priming must be tailored to the
OUTLINE DRAWING
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 further assistance, contact your Gorman‐Rupp
distributor or the Gorman‐Rupp Company.
Pump Dimensions
See Figure 1 for the approximate physical dimen
sions of this pump.
Figure 1. Pump Model T6A60S-F4L
PAGE B - 1INSTALLATION
Page 9
OM-05514SUPER T SERIES
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 assembly for cracks, dents,
damaged threads, and other obvious dam
age.
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.
d. Check levels and lubricate as necessary. Re
fer to LUBRICATION in the MAINTENANCEAND REPAIR section of this manual and per
form duties as instructed.
Table 1. Battery Specifications
Reserve
Capacity
@ 80
_ F
(Minutes)
120
Amp/
Hr.
Rating
75
Approx.
Overall
Dims.
(Inches)
10.25L
x
6.75W
x
8.88H
Voltage
12 Volts
Cold
Crank
Amps
@ 0_ F
850
Refer to the information accompanying the battery
and/or electrolyte solution for activation and charg
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 to retard corro
sion. Connect and tighten the positive cable first,
then the negative cable.
POSITIONING PUMP
e. If the pump andengine have been stored for
more than 12 months, some of the compo
nents or lubricants may have exceeded their
maximum shelf life. These must be inspectedor replaced to ensure maximum pump serv
ice.
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.
Use lifting and moving equipment in
good repair and with adequate capacity
to prevent injuries to personnel or dam
age to equipment. The bail is intended
for use in lifting the pump assembly
only. Suction and discharge hoses and
piping must be removed from the pump
before lifting.
Lifting
Pump unit weights will vary depending on the
mounting and drive provided. Check the shipping
tag on the unit packaging for the actual weight, and
use lifting equipment with appropriate capacity.
Drain the pump and remove all customer‐installed
equipment such as suction and discharge hoses
or piping before attempting to lift existing, installed
units.
The pump assembly can be seriously
PAGE B - 2INSTALLATION
Page 10
SUPER T SERIESOM-05514
damaged if the cables or chains used to lift
and move the unit are improperly wrapped
around the pump.
Mounting
Locate the pump in an accessible place as close as
practical to the 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, make certain the base is stationary by setting
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 operationonly; however, the engine manufacturer should be
consulted for continuous operation at angles
greater than 15_.
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
tially increase friction loss. If elbows are necessary,
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 pull a 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
lines are used, they should have adequate support
to secure them when filled with liquid and under
pressure.
Gauges
Clearance
When positioning the pump, allow a minimum
clearance of 18 inches (457,2 mm) in front of the
back cover to permit removal of the cover and easy
access to the pump interior.
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 notes
on Page E‐1 to be sure your overall application al
lows pump to operate within the safe operation
range.
Materials
Either pipe or hose maybe used for suction and
discharge lines; however, the materials must be
compatible with the liquid being pumped. If hose is
used in suction lines, it must be the rigid‐wall, rein
forced type to prevent collapse under suction. Us
Most pumps are drilled and tapped for installing
discharge pressure and vacuum suction gauges.
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 to the pump may result in erratic
readings.
SUCTION LINES
To avoid air pockets which could affect pump prim
ing, the suction line must be as short and direct as
possible. When operation involves a suction lift, 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 lines should be the same size as the pump
inlet. If reducers are used in suction lines, they
should be the eccentric type, and should be in
PAGE B - 3INSTALLATION
Page 11
OM-05514SUPER T SERIES
stalled with the flat part of the reducers uppermost
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
to use it; any spherical solids which pass through a
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 designed to handle up to 3‐inch (76,2
mm) diameter spherical solids.
sump at a distance equal to 1 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 carry air down into
the sump, and air entering the suction line will re
duce pump efficiency.
If it is necessary to position inflow close to the suc
tion inlet, 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,
the flow paths may interact, reducing the efficiency
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.
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
Suction Line Positioning
The depth of submergence of the suction line is
critical to efficient pump operation.
recommended minimum submergence vs. veloc
ity.
Figure 2 shows
NOTE
The pipe submergence required may be reduced
by installing a standard pipe increaser fitting at the
end of the suction 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).
PAGE B - 4INSTALLATION
Page 12
SUPER T SERIESOM-05514
Figure 2. Recommended Minimum Suction Line Submergence vs. Velocity
FLOAT SWITCHES
Installation
The standard pump is equipped with an auto‐start
control system, and can be conformed to start and
stop as the liquid level in the wet well or sump rises
and falls. The autostart unit employs either a single
or double float switch system, where a bulb raises
or lowers (floats) with the liquid level, thus activat
ing an enclosed miniature switch. The floats are
equipped with a socket type connector that plugs
into a matching receptacle on the auto‐start control
box.
Standard floats are equipped with 50 feet (15,2 m)
of cable.
When installing the floats, note the following:
a. Be sure to provide sufficient room in the wet
well or sump so that floats do not get ob
structed or drawn into the suction line. If a flex
ible suction hose is used, it may be extended
to lay along the bottom of the wet well or sump
and the float can be attached to the hose
above the point where it bends along the bot
tom. Direct the suction line toward the flow,
and the float(s) away from the flow. If a stand
pipe is available, attach the float switch cable
to the standpipe in the sump at the approxi
mate desired liquid level.
b. In a single float system, the cable can be teth
ered to the suction line or standpipe approxi
mately 6 inches (152 mm) above the float.
This setting allows approximately 9 inches
(229 mm) of liquid rise between pump start/
stop. The start/stop interval may be increased
by extending the float end of the cable. The
liquid level in the sump will increase approxi
mately 8 inches (203 mm) between start/stop
intervals for every 6 inches (152 mm) of cable
increase.
c. If a double float switch system is used, posi
tion the “Start” float at the desired high water
level in the sump, and the “Stop” float at the
desired low water level in the pump.
d. Refer to Figure 3 for additional float switch
data.
PAGE B - 5INSTALLATION
Page 13
OM-05514SUPER T SERIES
ENGINE
CONTROL
BOX
ON
(Emptying)
OFF
(Filling)
OPERATING
CABLE
TETHER
RANGE
(See Table Below)
POINT
OFF
(Emptying)
1.25” Pipe
(Not Furnished)
ON
(Filling)
Figure 3. Float Switch Data
OPTIONAL SUBMERSIBLE
TRANSDUCER
This unit may be equipped with an optional Elec
tronic Pressure Switch (EPS) that works in con
junction with a submersible transducer. The sub
mersible transducer converts pressure to an elec
trical signal proportional to liquid level. This electri
cal signal is distributed to the digital display on the
EPS through a scaling circuit which converts the
electrical signal to “feet of water”.
3.0
(0.9)
2.5
(.76)
2.0
(0.6)
1.5
(.46)
1.0
(0.3)
0.5
(.15)
1.0
(0.3)
APPROXIMATE FREE CORD LENGTH IN FT. (M)
2.0
(0.6)
3.0
(0.9)
above the point where it bends along the bot
tom. See Figure B-4 for a typical installation.
c. The wet well or sump must be vented to atmo
sphere.
d. The EPS is scaled in feet of water column. If
the measured medium is other than 1.0 spe
cific gravity, the reading on the EPS should be
divided by the specific gravity of the mea
sured medium to obtain the actual level.
4.0
(1.2)
When installing the submersible transducer, note
the following:
a. Handle the signal cable and transducer with
care during installation. Carefully lower the
transducer into the wet well or sump; do not
drop it to the bottom. To avoid clogging, sus
pend the transducer off the bottom.
b. Be sure to provide sufficient room in the wet
well or sump so that the transducer does not
get drawn into the suction line. To prevent this,
a flexible suction hose may be extended to lay
along the bottom of the wet well or sump. The
transducer can then be attached to the hose
e. Thoroughly clean the transducer after each
use to prevent clogging.
Do not disassemble the transducer or
loosen the compression nut at the signal
cable entry. This will void warranty. There
are no user‐serviceable parts inside. Do
not nick or cut the jacket of the signal
cable; this will cause leakage and void
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,
use a valve as large as the largest pipe to minimize
friction losses. Never install a throttling valve in a
suction line.
With high discharge heads, it is recommended that
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.
FLOW
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
charge side of the pump must be opened to atmos
pheric pressure through a bypass line installed be
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
PAGE B - 7INSTALLATION
Page 15
OM-05514SUPER T SERIES
affect pump discharge capacity; however, the by
pass line should be at least 1 inch (25,4 mm) in di
ameter to minimize the chance of plugging.
In low discharge headapplications (less than 30
feet (9,1 m)), it is recommended that the bypass
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
outline may be terminated with a six‐to‐eight foot
(1,8 to 2,4 m) length of 1‐1/4 inch (31,8 mm) I.D.
smooth‐bore hose; air and liquid vented during
the priming process will then agitate the hose and
break up any solids, grease, or other substances
likely to cause clogging.
A bypass line that is returned to a wet well
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 (9,1 m), an excessive amount of liquid may
be bypassed and forced back to the wet well under
the full working pressure of the pump; this will re
duce overall pumping efficiency. Therefore, it is
recommended that a Gorman‐Rupp Automatic
Air Release Valve be installed in the bypass line.
lift station), if a manual shut‐off valve is in
stalled anywhere in a bypass line, it must
be a full‐opening, ball‐type valve to pre
vent plugging by solids.
A manual shut‐off valve should not be
installed in any bypass line. A manual
shut‐off valve may inadvertently be left
closed during operation. A pump which
has lost prime may continue to operate
without reaching prime, causing dan
gerous overheating and possible explo
sive rupture of the pump casing. Per
sonnel could be severely injured.
Allow an over‐heated pump to com
pletely cool before servicing. Do not re
move plates, covers, gauges, or fittings
from an over‐heated pump. Liquid with
in the pump can reach boiling tempera
tures, and vapor pressure within the
pump can cause parts being disen
gaged to be ejected with great force. Af
ter the pump completely cools, drain the
liquid from the pump by removing the
casing drain plug. Use caution when re
moving the plug to prevent injury to per
sonnel from hot liquid.
AUTOMATIC AIR RELEASE VALVE
Gorman‐Rupp Automatic Air Release Valves are
reliable, and require minimum maintenance. See
Automatic Air Release Valves 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
Company for selection of an Automatic Air Release
Valve to fit your application.
When properly installed, a Gorman‐Rupp Auto
matic Air Release Valve will permit air to escape
through the bypass line and then close automati
cally when the pump is fully primed and pumping
at full capacity.
Some leakage (1 to 5 gallons [3.8 to 19
liters] per minute) will occur when the
Except in certain specific applications (to
prevent flooding during service of an auto
matic air release valve in a below‐ground
PAGE B - 8INSTALLATION
valve is fully closed. Be sure the bypass
line is directed back to the wet well or
tank to prevent hazardous spills.
Page 16
SUPER T SERIESOM-05514
Consult the manual accompanying the Air Release
Valve for additional information on valve installation
and performance.
Air Release Valve Installation
The Automatic Air Release Valve must be inde
CLEAN‐OUT
COVER
INSTALL AIR RELEASE VALVE
IN HORIZONTAL POSITION
90_ LONG
RADIUS
ELBOW
SUPPORT
BRACKET
BLEED LINE 1”
(25,4 MM) DIA. MIN.
(CUSTOMER FUR
NISHED) EXTEND 6”
(152 MM) BELOW
PUMP OFF LIQUID
LEVEL
SUCTION
LINE
pendently mounted in a horizontal position be
tween the pump discharge portand the inlet side of
the discharge check valve (see Figure 5). The inlet
opening in the Air Release Valve is equipped with
standard 1‐inch NPT pipe threads.
DISCHARGE PIPE
DISCHARGE
CHECK VALVE
PUMP DISCHARGE
SELF‐PRIMING
CENTRIFUGAL
PUMP
WET WELL
OR SUMP
Figure 5. Typical Automatic Air Release Valve Installation
Connect the valve outlet to a bleed line which
slopes back to the wet well or sump. The bleed line
must be the same size as the outlet opening or
larger, depending on which Air Release Valve is be
ing used. If piping is used for the bleed line, avoid
the use of elbows whenever possible.
NOTE
For multiple pump installations, it is recommended
that each Air Release Valve be fitted with an inde
pendent bleeder line directed back to the wet well.
If multiple Air Release Valves are installed in a sys
tem, do not direct bleeder lines to a common mani
fold pipe. Contact your Gorman‐Rupp distributor or
the Gorman‐Rupp Company for information about
installation of an Automatic Air Release Valve for
your specific application.
ALIGNMENT
The alignment of the pump and the engine is criti
cal for trouble‐free mechanical operation. See Sec
tion E, Securing Intermediate And Drive Assem
bly To Engine for detailed information.
PAGE B - 9INSTALLATION
Page 17
SUPER T SERIES
OM-05514
OPERATION - SECTION C
Review all SAFETY information in Section A.
Follow the instructions on all tags, labels and
decals attached to the pump.
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.
This pump is designed to handle dirty
water containing specified entrained
solids and slurries. Do not attempt to
pump volatile, corrosive, or flammable
liquids which may damage the pump or
endanger personnel as a result of pump
failure.
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 the seal assembly.
Add liquid to the pump casing when:
1. The pump is being put into service for the
first time.
2. The pump has not been used for a consider
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 all connect
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 1700
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
OPERATIONPAGE C - 1
ing piping is securely installed. Other
wise, liquid in the pump forced out un
der pressure could cause injury to per
sonnel.
To fill the pump, remove the pump casing fill cover
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.
NOTE
If the suction or discharge piping is open, a hose
can be used to fill the casing through the piping.
Page 18
OM-05514SUPER T SERIES
STARTING
This pump is equipped with an automat
ic starting system, and is subject to au
tomatic restart. Keep hands and cloth
ing away from the unit to prevent injury
during automatic operation. Disconnect
the positive battery cable before per
forming any maintenance. Failure to do
so may result in serious personal injury.
Consult the operations manual furnished with the
engine.
Manual Starting
On initial start‐up, set the engine speed at the half‐
throttle position. Turn the keyswitch on the control
box to the “START” position until the engine starts.
Release the key and the switch will return to the
“RUN” position.
After the engine starts and the unit is fully primed,
adjust the engine RPM until the desired flow rate is
achieved.
Press and hold the white “AUTO” button on the
control panel until the red “AUTO” light illuminates.
The auto‐start system is now armed.
NOTE
The unit can continue to be started manually with
the keyswitch in the “AUTO START” position by
pressing the white “MAN” button on the control. The
“Single Lightning Bolt” light on the control will illu
minate in conjunction with an audible alarm before
the unit starts. The unit can then be stopped manu
ally by pressing the “OFF/SET” button.
In the auto‐start mode, the “Single Lightning Bolt”
light will illuminate in conjunction with an audible
alarm when the liquid level in the sump or wet well
rises and activates the float(s). The light will blink
and the alarm will sound for approximately 8 sec
onds before the unit starts.
When the liquid level in the sump or wet well is suffi
ciently pumped down, the unit will automatically
shut down.
NOTE
If the keyswitch is moved to the “OFF” position
while in the auto‐start mode, the engine will stop.
However, the auto‐start process will continue as
soon as the keyswitch is moved back to the “AUTO
START” position. To cancel the auto‐start process,
press the “OFF/SET” button.
Pump speed and operating condition
points must be within the continuous per
formance range shown on the curve on
page E‐1.
Automatic Starting
Install the float(s) or submersible transducer as de
scribed in INSTALLATION, Section B.
Follow the procedures outlined for manual starting
and throttle adjustment, then turn the key to the
“AUTO START” position.
NOTE
For security purposes, the key can be removed with
the switch in the “AUTO START” position.
The control panel is equipped with high oil temper
ature, low oil pressure, V‐belt and start failure (3 at
tempts) safety shutdowns. If any of these problems
occur, the red “Double Lightning Bolt” light will illu
minate to indicate a system fault. When the prob
lem is corrected, press the “OFF/SET” button to re
set the control.
NOTE
The “OFF/SET” button has dual functionality when
in program mode. If necessary, consult the factory
for details on programming functions.
The unit can be started manually with the key
switch in the “AUTO START” position by pressing
the white “MAN” button. The “Single Lightning
Bolt” light will illuminate in conjunction with an au
dible alarm before the unit starts.
OPERATIONPAGE C - 2
Page 19
SUPER T SERIES
OM-05514
Stop the unit manually by pressing the “OFF/SET”
button.
OPTIONAL EPS CONTROL
Features
The optional EPS Control is equipped with a
12VDC Electronic Pressure Switch which includes
the following features:
S 3 Output Relays: 1. A output, delayed
2. B output, no delay
3. Horn output, no delay
S 3 Inputs:1. Horn silence
2, Pressure transducer
3. Low Temp Thermostat
S LCD screen with backlight for function moni
toring
S Bright LEDs to indicate output status and dis
play modes
S Three switches on front panel for all adjust
ments
S Battery level indicator on LCD screen to alert
operator of low battery condition
S Microprocessor Control
S Error display to alert user of errors in calibra
tion
Functional Description
f) SEt b.on... B ON setpoint, units of level.
g) Hrn dLy...Horn on, A output delay
time, 5-30 seconds, in
5‐second increments.
h) LO BAT...Indicator, shows battery
voltage level is below
12VDC.
i) Lo tpt...Shows status of Low Tem
perature Thermostat con
tacts.
2. LEDs:
a) When the green LED is lighted, the unit is
showing level on the LCD display.
b) When the A output LED is lighted, the A
output relay is closed.
c) When the B output LED is lighted, the B
output relay is closed
NOTE
LED's and all segments of the display are lighted
upon connection of power as a lamp test feature.
However, no relay outputs are closed during test.
3. Switches:
a) The switch functions as a “round rob
in” type switch. Pressing this switch will
cause the unit to show the next selection
in the order listed above.
Front Panel Controls/Displays
1. The LCD screen displays level information,
A and B setpoint off/on levels, Horn delay,
and calibration information.
Typical Messages on the display:
a) EEP bAd... Eeprom memory is not cor
rect, user must recalibrate
unit.
b) USr CAL... User calibrate mode, i.e.,
user wants to calibrate unit.
c) SEt a.oF...A OFF setpoint, units of lev
el.
d) SEt a.on... A ON setpoint, units of level.
e) SEt b.oF...B OFF setpoint, units of lev
el.
OPERATIONPAGE C - 3
b) The switch functions to decrease the
selection showing. This switch can be
used to decrease the smallest digit by
“bumping” the switch, or to continuously
decrease the digit by pressing and hold
ing for at least one second and releasing
when desired setting is reached.
c. The switch functions to increase the
selection showing. This switch can be
used to increase the smallest digit by
“bumping” the switch, or to continuously
increase the digit by pressing and hold
ing for at least one second and releasing
when desired setting is reached.
Liquid level adjustment of the Electronic Pressure
Switch is accomplished using the three buttons on
the control. For EPS functions and level adjust
ment, refer to the following instructions.
Page 20
OM-05514SUPER T SERIES
EPS Functions
Actual functions of the control occur as follows:
Power is applied to the unit.
Unit performs display test for approximately 4
seconds.
When the pressure level showing is equal to or
greater than the “A.on” setpoint, the Horn out
put contacts will close in approximately 1 sec
ond and a delay, equal to the “Hrn dLy” time,
will occur before the A output contacts close.
When the level showing is equal to or greater
than the “B.on” setpoint, the B output contacts
will close in approximately 1 second.
When the pressure decreases to a level equal
to or less than the “B.of” setpoint, B output
contacts will open in approximately one sec
ond.
When the pressure decreases to a level equal
to or less than the “A.of” setpoint, A output con
tacts will open in approximately one second.
If an optional Low Temperature Thermostat is
connected to the unit and the thermostat con
tacts close, the unit displays “lo tpt” on the dis
play. In approximately 1 second, the Horn out
put contacts close, then after the “Hrn dLy”
time, A output contacts close. A output con
tacts will remain closed as long as Low Tem
perature Thermostat contacts are closed.
ter false signals that could cause “nuisance” trip
ping of the contacts.
NOTE
If the “Hrn dLy” is changed during the actual A out
put delay cycle, the current cycle is not changed;
the change becomes effective on the next A output
delay cycle.
Use caution to ensure that the “‐‐.on” set
point (i.e. “A.on”) is not adjusted to a level
less than the corresponding “‐‐.of” set
point (i.e. “A.of”). Improper adjustment of
the off/on setpoints will render the unit non‐
functional, resulting in flooding.
EPS Calibration
NOTE
Zero offset and span adjustments are only neces
sary to calibrate a new unit, or when replacing the
transducer. Once calibrated, “ON” and “OFF” set
points will be stored in the unit's memory. Liquid
level adjustments will be used whenever “ON” and
“OFF” liquid levels must be reset.
When the Low Temperature Contacts open, A
output contact will open only if the level is
equal to or less than the “A.off” setpoint.
As long a the Low Temperature Thermostat
contacts are closed, the display will show “lo
tpt” unless
some other information. Level is not viewable
until the Low Temperature Thermostat con
tacts open.
The user may wish to check Setpoints Off/On
and Horn output/A output delay times. “Bump
ing” the switch will display all of the informa
tion desired.
switch is pressed to display
NOTE
One second delays in contact opening/closing is a
result of time sampling of the pressure signal to fil
There are two reasons for the user to calibrate the
unit. When power is applied, the unit confirms set
points and other calibration information for validity.
If the setpoints are not valid, the LCD screen shows
“EEP bAd” and the unit must be recalibrated. Also,
if the unit is moved, or some other external change
takes place, the unit must be recalibrated.
Zero Adjustment
Zero adjustment tells the unit when the transducer
is exposed to zero water (atmospheric) pressure.
When recalibration is desired, hold the transducer
in hand and apply power to the unit. The LCD
screen will display “Level ABC”. Press and hold
for 5 seconds. The LCD screen displays “Input?
External XDUCR”. Perform the following calibration
procedures.
OPERATIONPAGE C - 4
Page 21
SUPER T SERIES
Press 3 times and the LCD screen will display
“Calibrate Zro”. Press or until a character or
number on the display changes.
Press to accept the entry and advance to “Cali
brate Span”.
Span Adjustment
Span adjustment calibrates the unit to a known wa
ter pressure (depth). To set:
Submerge the transducer to an exact known
depth. At “Calibrate Span”, the span setting in the
unit's memory will display. Press to increase or
to decrease the value unitl the LCD screen dis
play equals the actual known depth of the trans
ducer.
Level Adjustment
Level adjustment tells the unit when to turn the
pump on and off. To set:
From “Level ABC” display, press once and
“Pump Setpt A On” will display. Press to in
crease or to decrease to the desired level at
which the pump turns on. Press to advance to
“Pump Setpt A Off”. Press to increase or to
decrease to the desired level at which the pump
turns off.
Press again to advance to “Pump Setpt B On”. If
“B” is to be used, repeat the procedure described
above for adjusting level “A”.
Horn Delay
The horn delay is pre‐set from the factory through
the engine control panel, therefore this function is
not utilized through the EPS.
OM-05514
A manual shut‐off valve should not be
installed in any bypass line. A manual
shut‐off valve may inadvertently be left
closed during operation. A pump which
has lost prime may continue to operate
without reaching prime, causing dan
gerous overheating and possible explo
sive rupture of the pump casing. Per
sonnel could be severely injured.
Lines With a Bypass
If a Gorman‐Rupp Automatic Air Release Valve has
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
will be discharged through the bypass line back to
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
engine. Priming is indicated by a positive reading
on the discharge pressure gauge or by a quieter
operation. The pump may not prime immediately
because the suction line must first fill with liquid. If
the pump fails to prime within five minutes, stop it
and check the suction line for leaks.
After the pump has been primed, partially close the
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, adjust the throttling valve to the required flow
rate.
OPERATION
A Gorman‐Rupp automatic air release valve may
be installed in a bypass line, or the bypass line may
be left open.
OPERATIONPAGE C - 5
Leakage
No leakage should be visible at pump mating sur
faces, or at pump connections or fittings. Keep all
line connections and fittings tight to maintain maxi
mum pump efficiency.
Page 22
OM-05514SUPER T SERIES
Liquid Temperature And Overheating
The maximum liquid temperature for this pump is
160_F (71_C). Do not apply it at a higher operating
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 completely cool before servic
ing it. Refill the pump casing
with cool liquid.
Allow an over‐heated pump to com
pletely cool before servicing. Do not re
move plates, covers, gauges, or fittings
from an over‐heated pump. Liquid with
in the pump can reach boiling tempera
tures, and vapor pressure within the
pump can cause parts being disen
gaged to be ejected with great force. Af
ter the pump completely cools, drain the
liquid from the pump by removing the
casing drain plug. Use caution when re
moving the plug to prevent injury to per
sonnel from hot liquid.
As a safeguard against rupture or explosion due to
heat, this pump is equipped with a pressure relief
valve which will open if vapor pressure within the
pump casing reaches a critical point. If over‐heat
ing does occur, stop the pump immediately and al
low it to cool before servicing it. Approach anyover‐heated pump cautiously. It is recom
mended 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 specified or provided by the Gorman‐Rupp
Company.
Strainer Check
should also be checked if pump flow rate begins to
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
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
With the pump inoperative, install a vacuum gauge
in the system, using pipe dope on the threads.
Block the suction line and start the pump. At oper
ating speed the pump should pull a vacuum of 20
inches (508 mm) or more of mercury. If it does not,
check for air leaks in the seal, gasket, or discharge
valve.
Open the suction line, and read the vacuum gauge
with the pump primed and at operation speed.
Shut off the pump. The vacuum gauge reading will
immediately drop proportionate to static suction
lift, and should then stabilize. If the vacuum reading
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
Manual Stopping
In the manual mode, reduce the throttle speed
slowly, and allow the engine to idle briefly before
switching the HAND‐OFF‐AUTO switch to `OFF'.
If the application involves a high discharge
head, gradually close the discharge
throttling valve before stopping the pump.
After stopping the pump, close and lock the control
panel cover, or disconnect the positive battery
cable to ensure that the pump will remain inopera
tive.
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
Automatic Stopping
In the automatic mode, the pump will stop when
the liquid in the wet well or sump lowers and acti
OPERATIONPAGE C - 6
Page 23
SUPER T SERIES
OM-05514
vates the “Off” float switch(s) or “Off” setpoint
stored in the optional EPS. The pump will restart
automatically when the liquid rises and activates
the “On” float switch(s) or “On” setpoint stored in
the optional EPS.
Safety Shutdown System
The unit is equipped with a safety system to auto
matically shut down the engine under certain con
ditions. The engine will automatically shut down:
1. If the engine exceeds its safe operating tem
perature.
2. If the engine oil pressure drops below design
limits.
3. If the engine fails to start within a pre‐set peri
od of time.
4. If the engine speed exceeds the safe operat
ing range.
shutdown before putting the unit back
into service. Consult the factory for ad
ditional information.
OPERATION IN EXTREME HEAT
The safety shutdown system will automatically
stop the unit if engine operating temperature ex
ceeds design limits. If engine over‐temperature
shutdown occurs, allow the unit to cool before re
starting.
If engine overheating continues, check the engine
lubricant level and viscosity. Consult the engine
operation manual for the recommended lubricant
for operation in extreme heat.
If the unit is equipped with the optional auto‐start
control, the float(s) may need to be adjusted to al
low shorter run and longer cooling periods, if pos
sible.
5. If the engine V‐belt breaks.
Lights on the control panel will indicate which of the
safety features has caused the engine to shut
down.
Should any of the safety features cause the engine
to shut down, the cause must be determined andcorrected before putting the unit back into service.
The engine will notrestart until the keyswitch has
been returned to the `OFF' position for at least 10
seconds.
All safety shutdown features are pre‐set at the fac
tory for optimum performance and safety; do not
attempt to adjust these settings.
Never disconnect any of the safety shut
down features; this will void the warran
ty and could result in serious damage to
the unit and/or injury to personnel. Safe
ty shutdown features are pre‐set at the
factory; do not attempt to adjust any of
the settings. Determine the cause of
This pump is equipped with an automat
ic starting system, and is subject to au
tomatic restart. Keep hands and cloth
ing away from the unit to prevent injury
during automatic operation. Disconnect
the positive battery cable before per
forming any maintenance. Failure to do
so may result in serious personal injury.
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.
OPERATIONPAGE C - 7
Page 24
OM-05514SUPER T SERIES
BEARING TEMPERATURE CHECK
Bearings normally run at higher than ambient tem
peratures because of heat generated by friction.
Temperatures up to 160_F (71_C) are considered
normal for bearings, and they can operate safely to
at least 180_F (82_C).
Checking bearing temperatures by hand is inaccu
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 temperatures is a
warning that the bearings are at the point of failing
to operate properly. Make certain that the bearing
lubricant is of the proper viscosity and at the cor
rect level (see LUBRICATION in Section E). Bear
ing overheating can also be caused by shaft
misalignment and/or excessive vibration.
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.
OPERATIONPAGE C - 8
Page 25
TROUBLESHOOTING - SECTION D
Review all SAFETY information in Section A.
Before attempting to open or service the
pump:
1. Familiarize yourself with this man
ual.
2. Set the HAND‐OFF‐AUTO switch to
`OFF', and disconnect 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.
OM-05514SUPER T SERIES
5. Close the suction and discharge
valves.
6. Vent the pump slowly and cau
tiously.
7. Drain the pump.
This pump is equipped with an automat
ic starting system, and is subject to au
tomatic restart. Keep hands and cloth
ing away from the unit to prevent injury
during automatic operation. Disconnect
the positive battery cable before per
forming any maintenance. Failure to do
so may result in serious personal injury.
TROUBLEPOSSIBLE CAUSEPROBABLE REMEDY
PUMP FAILS TO PRIMENot enough liquid in casing.
Suction check valve contaminated or
damaged.
Air leak in suction line.
Lining of suction hose collapsed.
Leaking or worn seal or pump gas
ket.
Suction lift or discharge head too
high.
Strainer clogged.
PUMP STOPS OR FAILS
TO DELIVER RATED
FLOW OR PRESSURE
Air leak in suction line.
Lining of suction hose collapsed.
Leaking or worn seal or pump gas
ket.
Add liquid to casing. See PRIMING.
Clean or replace check valve.
Correct leak.
Replace suction hose.
Check pump vacuum. Replace leak
ing or worn seal or gasket.
Check piping installation and install
bypass line if needed. See INSTALLATION.
Check strainer and clean if neces
sary.
Correct leak.
Replace suction hose.
Check pump vacuum. Replace
leaking or worn seal or gasket.
Strainer clogged.
Suction intake not submerged at
proper level or sump too small.
TROUBLESHOOTINGPAGE D - 1
Check strainer and clean if neces
sary.
Check installation and correct sub
mergence as needed.
Page 26
OM-05514SUPER T SERIES
TROUBLEPOSSIBLE CAUSEPROBABLE REMEDY
PUMP STOPS OR FAILS
TO DELIVER RATED
FLOW OR PRESSURE
(cont.)
PUMP REQUIRES TOO
MUCH POWER
Impeller or other wearing parts
worn or damaged.
Impeller clogged.
Discharge head too high.
Suction lift too high.
Pump speed too slow.
EPS limit switches set improperly or
submersible transducer clogged.
Pump speed too high.
Discharge head too low.
Liquid solution too thick.
Bearing(s) frozen.
Replace worn or damaged parts.
Check that impeller is properly cen
tered and rotates freely.
Free impeller of debris.
Install bypass line.
Measure lift w/vacuum gauge. Re
duce lift and/or friction losses in
suction line.
Check EPS limit settings; check and
clean submersible transducer.
Check engine output.
Adjust discharge valve.
Dilute if possible.
Disassemble pump and check
bearing(s).
PUMP CLOGS
FREQUENTLY
EXCESSIVE NOISECavitation in pump.
BEARINGS RUN TOO
HOT
Discharge flow too slow.
Suction check valve or foot valve
clogged or binding.
Liquid solution too thick.
Pumping entrained air.
Pump or drive not securely
mounted.
Impeller clogged or damaged.
Bearing temperature is high, but
within limits.
Open discharge valve fully to in
crease flow rate, and run engine at
maximum governed speed.
Clean valve.
Dilute if possible.
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.
Check bearing temperature regular
ly to monitor any increase.
Low or incorrect lubricant.
Suction and discharge lines not
properly supported.
Drive misaligned.
Check for proper type and level of
lubricant.
Check piping installation for proper
support.
Align drive properly.
TROUBLESHOOTINGPAGE D - 2
Page 27
OM-05514SUPER T SERIES
PREVENTIVE MAINTENANCE
Since pump applications are seldom identical, and
pump wear is directly affected by such things as
the abrasive qualities, pressure and temperature
of the liquid being pumped, this section is intended
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. The appearance of wearing parts should also
be documented at each inspection for comparison
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
before failure occurs, reducing unscheduled down
time.
For new applications, a first inspection of wearing
parts at 250 hours will give insight into the wear rate
for your particular application. Subsequent inspec
tions should be performed at the intervals shown
on the chart below. Critical applications should be
inspected more frequently.
If So Equipped)IR
V‐Belts (If So Equipped)I
Air Release Valve Plunger Rod (If So Equipped)IC
Front Impeller Clearance (Wear Plate)I
Rear Impeller Clearance (Seal Plate)I
Check ValveI
Pressure Relief Valve (If So Equipped)C
Pump and Driver AlignmentI
Shaft DeflectionI
BearingsI
Bearing HousingI
PipingI
Driver Lubrication - See Mfgr's Literature
DailyWeeklyMonthlySemi‐
Annually
Annually
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.
TROUBLESHOOTINGPAGE D - 3
Page 28
SUPER T SERIESOM-05514
PUMP MAINTENANCE AND REPAIR ‐ SECTION E
MAINTENANCE AND REPAIR OF THE WEARING PARTS OF THE PUMP WILL MAINTAIN PEAK
OPERATING PERFORMANCE.
STANDARD PERFORMANCE FOR PUMP MODEL T6A60S-F4L
Based on 70_ F (21_ C) clear water at sea level
with minimum suction lift. Since pump installations
are seldom identical, your performance may be dif
ferent due to such factors as viscosity, specific
gravity, elevation, temperature, and impeller trim.
Contact the Gorman‐Rupp Company to verify per
formance or part numbers.
Pump speed and operating condition
If your pump serial number is followed by an “N”,
your pump is NOT a standard production model.
MAINTENANCE & REPAIRPAGE E - 1
points must be within the continuous per
formance range shown on the curve.
Page 29
PARTS PAGE
SUPER T SERIESOM-05514
SECTION DRAWING
Figure 1. Pump Model T6A60S-F4L
PARTS LIST
Pump Model T6A60S-F4L
(From S/N 1313299 Up)
If your pump serial number is followed by an “N”, your pump is NOT a standard production model. Contact
the Gorman‐Rupp Company to verify part numbers.
ITEM
NO.
1PUMP END ASSYT6A60S-(SAE 4/10) ---1
2POWER UNIT KIT46143-035---1
3G‐R DECALGR-06---5
4PUMP MOUNTING KIT48157-003---1
Follow the instructions on all tags, label and de
cals attached to the pump.
2. Switch off the engine ignition and
disconnect the positive battery
cable to ensure that the pump will
This pump requires little service due to its rugged,
minimum‐maintenance design. However, if it be
comes necessary to inspect or replace the wearing
parts, follow these instructions which are keyed to
the sectional views (see Figures 1, 2, 3, 4 and 5)
and the accompanying parts lists.
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.
This manual will alert personnel to known proce
dures which require special attention, to those
which could damage equipment, and to those
which could be dangerous to personnel. However,
this manual cannot possibly anticipate and provide
detailed precautions for every situation that might
occur during maintenance of the unit. Therefore, it
is the responsibility of the owner/maintenance per
sonnel to ensure that only safe, established main
tenance procedures are used, and that any proce
dures not addressed in this manual are performed
only after establishing that neither personal safety
nor pump integrity are compromised by such prac
tices.
6. Vent the pump slowly and cau
tiously.
7. Drain the pump.
Use lifting and moving equipment in
good repair and with adequate capacity
to prevent injuries to personnel or dam
age to equipment.
Back Cover And Wear Plate Removal
(Figure 3)
Many service functions may be performed by
draining the pump and removing the back cover
assembly. If major repair is required, the piping
and/or power source must be disconnected. The
following instructions assume complete disassem
bly is required.
Before attempting to service the pump, disconnect
or lock out the power source and take precautions
to ensure that it will remain inoperative. Close all
valves in the suction and discharge lines.
For engine disassembly and repair, consult the lit
erature supplied with the engine, or contact your
local engine representative.
The wear plate (14) is easily accessible and may be
serviced by removing the back cover assembly
(20). Before attempting to service the pump, re
move the pump casing drain plug (19) and drain
the pump. Clean and reinstall the drain plug.
Remove the back cover nuts (33) and pry the back
cover and assembled wear plate from the pump
casing (1).
NOTE
An alternate method of removing the back cover
from the pump casing is to remove the back cover
nuts (33) and two diagonally opposing locking col
lars (31). Install two 1/2-13 UNC x 2 inch long
screws in the tapped holes in the back cover and
use them to press the back cover out of the pump
MAINTENANCE & REPAIRPAGE E - 10
Page 38
SUPER T SERIES
OM-05514
casing.
Inspect the wear plate, and replace it if badly
scored or worn. To remove the wear plate, disen
gage the hardware (16 and 17).
Inspect the back cover and wear plate O‐rings (15
and 18) and replace it if damaged or worn.
Suction Check Valve Removal
(Figure 3)
If the check valve assembly (39) is to be serviced,
remove the check valve pin (41), reach through the
back cover opening and pull the complete assem
bly from the suction flange (40).
NOTE
Further disassembly of the check valve is not re
quired since it must be replaced as a complete unit.
Individual parts are not sold separately.
Remove the hardware securing the pump casing
to the base.
Disengage the hardware (6 and 7) securing the
drive flange to the engine bellhousing, and remove
the guards (24, Figure 4). Separate the pump end
and drive assembly from the engine by pulling the
pump end straight away from the engine.
As the assemblies separate, the flexible portion of
the coupling assembly (3) will remain on the shaft.
To remove the coupling from the shaft, unscrew the
two allen head setscrews from the bushing (2).
Screw one of the setscrews into the puller hole on
the circumference of the bushing. As the coupling
and bushing separate, remove the bushing, and
slide the coupling off the shaft. Remove the shaft
key (11, Figure 4).
It is not necessary to remove the outer ring of the
coupling from the engine flywheel unless the cou
pling must be replaced. To remove the ring, disen
gage the hardware (4 and 5) securing it to the fly
wheel.
Separating Intermediate And Drive Assembly
From Engine
(Figure 5)
Further disassembly requires separating the pump
end and drive assembly from the engine. Install a
standard 5/8‐11 UNC lifting eye in the tapped hole
in the top of the pump casing. Be sure to screw the
eye into the casing until fully engaged. Support the
pump using a suitable hoist and the lifting eye.
Do not attempt to lift the complete pump
unit using the lifting eye. It is designed
to facilitate removal or installation of in
dividual components only. Additional
weight may result in damage to the
pump or failure of the eye bolt.
Remove any leveling shims used under the casing
mounting feet. Tie and tag the shims for ease of
reassembly.
Move the pump end to a clean, well equipped shop
area for further disassembly.
Loosening Impeller
(Figure 4)
Before attempting to loosen the impeller, remove
the seal cavity drain plug (23) and drain the lubri
cant. This will prevent the oil from escaping as the
impeller is removed. Clean and reinstall the drain
plug.
With the pump end separated from the engine and
the back cover (20, Figure 3) removed, wedge a
block of wood between the vanes of the impeller
and the pump casing to prevent rotation.
If removed, install the shaft key (11) in the shaft
keyway. Install a lathe dog on the drive end of the
MAINTENANCE & REPAIRPAGE E - 11
Page 39
OM-05514SUPER T SERIES
shaft (12) with the “V” notch positioned over the
shaft key.
With the impeller rotation still blocked, see Figure 6
and use a long piece of heavy bar stock to pry
against the arm of the lathe dog in a counterclock
wise direction (when facing the drive end of the
shaft). Use caution not to damage the shaft or key
way. When the impeller breaks loose, remove the
lathe dog, key and wood block.
TEE
APPROX. 6 IN.
(152 MM) LONG
NOTE
Do not remove the impeller until the rotating assem
bly has been removed from the pump casing.
Turn
Counterclockwise
Lathe Dog Arm
“V” Notch
Heavy
Bar Stock
Figure 6. Loosening Impeller
Shaft Key
Impeller Shaft
Lathe Dog
Setscrew
APPROX. 14 IN.
(356 MM) LONG
Figure 7. Rotating Assembly Tool
To install the tool, remove the vented plug (6, Figure
4) from the bearing housing, and screw the longest
length of pipe into the vent hole until fully engaged.
Install the tee, and screw the handles into the tee.
Use caution when lifting the rotating assembly to
avoid injury to personnel or damage to the assem
bly.
Remove the bearing housing O‐ring (10).
Impeller Removal
(Figure 4)
With the rotating assembly removed from the
pump casing, unscrew the impeller from the shaft.
Use caution when unscrewing the impeller; ten
sion on the shaft seal spring will be released as the
impeller is removed. Inspect the impeller and re
place if cracked or badly worn.
Rotating Assembly Removal
(Figure 4)
Remove the hardware (11 and 12, Figure 3) secur
ing the rotating assembly to the pump casing. Sep
arate the rotating assembly by pulling straight
away from the pump casing. Tie and tag the rotat
ing assembly shims (32) for ease of reassembly.
NOTE
An optional disassembly tool is available from the
factory. If the tool is used, follow the instructions
packed with it. A similar tool may be assembled us
ing 1/2‐inch pipe (schedule 80 steel or malleable
iron) and a standard tee (see Figure 7). All threads
are 1/2‐inch NPT. Do not pre‐assemble the tool.
Remove the impeller adjusting shims (29); tie and
tag the shims, or measure and record their thick
ness for ease of reassembly.
Seal Removal
(Figure 4)
Slide the integral shaft sleeve and rotating portion
of the seal off the shaft as a unit.
Use a pair of stiff wires with hooked ends to remove
the stationary element and seat.
An alternate method of removing the stationary
seal components is to remove the hardware (20
and 21) and separate the seal plate (22) and gas
MAINTENANCE & REPAIRPAGE E - 12
Page 40
SUPER T SERIES
ket (3) from the bearing housing (5). Position the
seal plate on a flat surface with the impeller side
down. Use a wooden dowel or other suitable tool to
press on the back side of the stationary seat until
the seat, O‐rings, and stationary element can be
removed.
Remove the shaft sleeve O‐ring (30).
If no further disassembly is required, refer to Seal
Installation.
Shaft and Bearing Removal and Disassembly
(Figure 4)
When the pump is properly operated and main
tained, the bearing housing should not require dis
assembly. Disassemble the shaft and bearings
only when there is evidence of wear or damage.
OM-05514
To prevent damage during removal from
the shaft, it is recommended that bearings
be cleaned and inspected in place. It is
strongly recommended that the bearings
be replaced any time the shaft and bear
ings are removed.
Clean the bearing housing, shaft and all compo
nent parts (except the bearings) with a soft cloth
soaked in cleaning solvent. Inspect the parts for
wear or damage and replace as necessary.
Most cleaning solvents are toxic and
flammable. Use them only in a well ven
tilated area free from excessive heat,
sparks, and flame. Read and follow all
precautions printed on solvent contain
ers.
Shaft and bearing disassembly in the field
is not recommended. These operations
should be performed only in a properly‐
equipped shop by qualified personnel.
Remove the bearing housing drain plug (24) and
drain the lubricant. Clean and reinstall the drain
plug.
Disengage the hardware (15 and 16) and slide the
drive flange (10) and oil seal (13) off the shaft. Re
move the flange gasket (17), and press the oil seal
from the drive flange.
Place a block of wood against the impeller end of
the shaft and tap the shaft and assembled bear
ings (4 and 9) from the bearing housing.
Pry or press the oil seals (18 and 19) from the bear
ing housing.
After removing the shaft and bearings, clean and
inspect the bearings in place as follows.
Clean the bearings thoroughly in fresh cleaning
solvent. Dry the bearings with filtered compressed
air and coat with light oil.
Bearings must be kept free of all dirt and
foreign material. Failure to do so will great
ly shorten bearing life. Do not spin dry
bearings. This may scratch the balls or
races and cause premature bearing fail
ure.
Rotate the bearings by hand to check for rough
ness or binding and inspect the bearing balls. If ro
tation is rough or the bearing balls are discolored,
replace the bearings.
The bearing tolerances provide a tight press fit
onto the shaft and a snug slip fit into the bearing
housing. Replace the bearings, shaft, or bearing
housing if the proper bearing fit is not achieved.
MAINTENANCE & REPAIRPAGE E - 13
Page 41
OM-05514SUPER T SERIES
If bearing replacement is required, remove the out
board bearing snap ring (14), and use a bearing
puller to remove the bearings from the shaft.
Shaft and Bearing Reassembly and Installation
(Figure 4)
Clean the bearing housing, shaft and all compo
nent parts (except the bearings) with a soft cloth
soaked in cleaning solvent. Inspect the parts for
wear or damage as necessary.
Most cleaning solvents are toxic and
flammable. Use them only in a well ven
tilated area free from excessive heat,
sparks, and flame. Read and follow all
precautions printed on solvent contain
ers.
Inspect the shaft for distortion, nicks or scratches,
or for thread damage on the impeller end. Dress
small nicks and burrs with a fine file or emery cloth.
Replace the shaft if defective.
Position the inboard oil seal (18) in the bearing
housing bore with the lip positioned as shown in
Figure 4. Press the oil seal into the housing until the
face is just flush with the machined surface on the
inside of the housing.
The bearings may be heated to ease installation.
An induction heater, hot oil bath, electric oven, or
hot plate may be used to heat the bearings. Bear
ings should never be heated with a direct flame or
directly on a hot plate.
NOTE
If a hot oil bath is used to heat the bearings, both the
oil and the container must be absolutely clean. If
the oil has been previously used, it must be thoroughly filtered.
Heat the bearings to a uniform temperature no
higher than 250_F (120_C), and slide the bearings
onto the shaft, one at a time, until they are fully
seated. This should be done quickly, in one con
tinuous motion, to prevent the bearings from cool
ing and sticking on the shaft.
After the bearings have been installed and allowed
to cool, check to ensure that they have not moved
away from the shaft shoulders in shrinking. If
movement has occurred, use a suitably sized
sleeve and a press to reposition the bearings
against the shaft shoulders.
If heating the bearings is not practical, use a suit
ably sized sleeve, and an arbor (or hydraulic) press
to install the bearings on the shaft.
When installing the bearings onto the
shaft, never press or hit against the outer
race, balls, or ball cage. Press only on the
inner race.
To prevent damage during removal from
the shaft, it is recommended that bearings
be cleaned and inspected in place. It is
strongly recommended that the bearings
be replaced any time the shaft and bear
ings are removed.
NOTE
Position the inboard bearing (4) on the shaft with
the shielded side toward the impeller end of the
shaft. Position the outboard bearing (9) on the shaft
with the integral retaining ring on the bearing O.D.
toward the drive end of the shaft.
Secure the outboard bearing on the shaft with the
bearing snap ring (14).
It is recommended that a sleeve be positioned
against the inboard oil seal (18) to prevent the lip of
the oil seal from rolling as the shaft and bearings
are installed in the bearing housing. The O.D. of the
sleeve should be just smaller than the bearing
housing bore, while the I.D. of the sleeve should be
just larger than the O.D. of the lip seal area of the
shaft.
With the lip seal sleeve in place, lubricate the lip
seal area of the shaft, and slide the shaft and as
sembled bearings into the bearing housing until
MAINTENANCE & REPAIRPAGE E - 14
Page 42
SUPER T SERIES
OM-05514
the retaining ring on the outboard bearing seats
against the bearing housing. Remove the lip seal
sleeve.
When installing the shaft and bearings into
the bearing bore, push against the outer
race. Never hit the balls or ball cage.
Position the outboard oil seal (19) on the lubricated
shaft with the lip positioned as shown in Figure 4.
Press the oil seal into the bearing housing until the
face of the seal is just flush with the machined sur
face on the bearing housing.
Seal Installation
(Figures 4, 8, 9 and 10)
Most cleaning solvents are toxic and
flammable. Use them only in a well ven
tilated area free from excessive heat,
sparks, and flame. Read and follow all
precautions printed on solvent contain
ers.
Clean the seal cavity and shaft with a cloth soaked
in fresh cleaning solvent. Inspect the stationary
seat bore in the seal plate for dirt, nicks and burrs,
and remove any that exist. The stationary seat bore
must be completely clean before installing the
seal.
Press the oil seal (13) into the drive flange (10) with
the lip positioned as shown in Figure 4. Replace
the flange gasket (17), and secure the flange to the
bearing housing with the hardware (15 and 16). Becareful not to damage the oil seal lip on the shaft
keyway.
Lubricate the bearing housing as indicated in LU
BRICATION.
A new seal assembly should be installed
any time the old seal is removed from the
pump. Wear patterns on the finished faces
cannot be realigned during reassembly.
Reusing an old seal could result in prema
ture failure.
To ease installation of the seal, lubricate the shaft
sleeve O‐ring (30) and the external stationary seat
O‐ring with a very small amount of light lubricating
oil. See Figure 8 for seal part identification.
MAINTENANCE & REPAIRPAGE E - 15
Page 43
OM-05514SUPER T SERIES
RETAINER
SPRING
SEAL PLATE
O‐RINGS
IMPELLER
SLEEVE
O‐RING
BELLOWS
IMPELLER
SHAFT
ROTATING
ELEMENT
IMPELLER
SHIMS
DRIVE BAND
Figure 8. 46513-154 Cartridge Seal Assembly
This seal is not designed for operation at
temperatures above 160_F (71_C). Do not
use at higher operating temperatures.
If the seal plate (22) was removed, install the seal
plate gasket (3). Position the seal plate over the
shaft and secure it to the bearing housing with the
hardware (20 and 21). Install the bearing housing
O‐ring (33) and lubricate it with light grease.
To prevent damaging the shaft sleeve O‐ring (30)
on the shaft threads, stretch the O‐ring over a piece
of tubing 1‐1/2 I.D. x 1‐3/4 O.D. x 2‐inches long (38
mm x 43 mm x 51 mm). Slide the tube over the shaft
threads, then slide the O‐ring off the tube and onto
the shaft. Remove the tube, and continue to slide
the O‐ring down the shaft until it seats against the
shaft shoulder.
SHAFT
SLEEVE
STATIONARY
ELEMENT
STATIONARY
SEAT
the mylar storage tabs, if so equipped, from be
tween the seal faces.
New cartridge seal assemblies may be
equipped with mylar storage tabs between
the seal faces. If so equipped, these stor
age tabs must be removed before install
ing the seal.
Lubricate the external stationary seat O‐ring with
light oil. Slide the seal assembly onto the shaft until
the external stationary seat O‐ring engages the
bore in the seal plate.
Clean and inspect the impeller as described in Impeller Installation and Adjustment. Install the full
set of impeller shims (29) provided with the seal,
and screw the impeller onto the shaft until it is
seated against the seal (see Figure 9).
When installing a new cartridge seal assembly,
remove the seal from the container, and remove
Continue to screw the impeller onto the shaft. This
will press the stationary seat into the seal plate
bore.
MAINTENANCE & REPAIRPAGE E - 16
Page 44
SUPER T SERIES
OM-05514
O‐RING ENGAGED
WITH SEAL PLATE
BORE
SHEAR RING
(UNSHEARED)
Figure 9. Seal Partially Installed
NOTE
A firm resistance will be felt as the impeller presses
the stationary seat into the seal plate bore.
As the stationary seat becomes fully seated, the
seal spring compresses, and the shaft sleeve will
break the nylon shear ring. This allows the sleeve
to slide down the shaft until seated against the
shaft shoulder. Continue to screw the impeller onto
the shaft until the impeller, shims, and sleeve are
fully seated against the shaft shoulder (see Figure
10).
If necessary to reuse anold seal in an emer
gency, carefully separate the rotating and station
ary seal faces from the bellows retainer and sta
tionary seat.
A new seal assembly should be installed
any time the old seal is removed from the
pump. Wear patterns on the finished faces
cannot be realigned during reassembly.
Reusing an old seal could result in prema
ture failure.
Handle the seal parts with extreme care to prevent
damage. Be careful not to contaminate precision
finished faces; even fingerprints on the faces can
shorten seal life. If necessary, clean the faces with a
non‐oil based solvent and a clean, lint‐free tissue.
Wipe lightly in a concentric pattern to avoid
scratching the faces.
Carefully wash all metallic parts in fresh cleaning
solvent and allow to dry thoroughly.
STATIONARY SEAT
FULLY SEATED IN
SEAL PLATE BORE
Do not attempt to separate the rotating
portion of the seal from the shaft sleeve
when reusing an old seal. The rubber bel
lows will adhere to the sleeve during use,
and attempting to separate them could
damage the bellows.
Inspect the seal components for wear, scoring,
grooves, and other damage that might cause leak
age. Inspect the integral shaft sleeve for nicks or
cuts on either end. If any components are worn, or
SHEAR RING
(SHEARED)
Figure 10. Seal Fully Installed
Measure the impeller‐to‐seal plate clearance, and
remove impeller adjusting shims to obtain the
proper clearance as described in Impeller Instal
lation and Adjustment.
MAINTENANCE & REPAIRPAGE E - 17
the sleeve is damaged, replace the complete seal;
never mix old and new seal parts.
Install the stationary seal element in the stationary
seat. Press this stationary subassembly into the
seal plate bore until it seats squarely against the
bore shoulder. A push tube made from a piece of
plastic pipe would aid this installation. The I.D. of
the pipe should be slightly larger than the O.D. of
the shaft sleeve.
Page 45
OM-05514SUPER T SERIES
Slide the rotating portion of the seal (consisting of
the integral shaft sleeve, spring centering washer,
spring, bellows and retainer, and rotating element)
onto the shaft until the seal faces contact.
Proceed with Impeller Installation and Adjust
ment.
Impeller Installation
(Figure 4)
Inspect the impeller, and replace it if cracked or
badly worn. Inspect the impeller and shaft threads
for dirt or damage, and clean or dress the threads
as required.
The shaft and impeller threads must be
completely clean before reinstalling the im
peller. Even the slightest amount of dirt on
the threads can cause the impeller to seize
to the shaft, making future removal difficult
or impossible without damage to the im
peller or shaft.
Install the same thickness of impeller adjusting
shims (29) as previously removed. Apply `Never‐
Seez' or equivalent to the shaft threads and screw
the impeller onto the shaft until tight. Be sure the
seal spring seats squarely on the back side of the
impeller.
Rotating Assembly Installation
(Figure 3)
NOTE
If the pump has been completely disassembled, it
is recommended that the suction check valve and
back cover assembly be reinstalled at this point.
The back cover assembly must be in place to adjust
the impeller face clearance.
Install the bearing housing O‐ring (33) and lubri
cate it with light grease. Ease the rotating assem
bly into the pump casing using the installation tool.
Be careful not to damage the O‐ring.
Install the rotating assembly adjusting shims (13)
using the same thickness as previously removed.
Secure the rotating assembly to the pump casing
with the hardware (11 and 12).
To set the impeller and wear plate clearance refer
to the Back Cover Installation And Adjustment.
Suction Check Valve Installation
(Figure 3)
Inspect the check valve assembly (39) and replace
it if badly worn.
NOTE
The check valve assembly must be replaced as a
complete unit. Individual parts are not sold sepa
rately.
NOTE
At the slightest sign of binding, immediately back
the impeller off, and check the threads for dirt. Do
nottry to force the impeller onto the shaft.
A clearance of .025 to .040 inch (0,64 to 1,02 mm)
between the impeller and the seal plate is recom
mended for maximum pump efficiency. Measure
this clearance, and add or remove impeller adjust
ing shims as required.
NOTE
If the rotating assembly has been installed in the
pump casing, this clearance may be measured by
reaching through the priming port with a feeler
gauge.
Reach through the back cover opening with the
check valve and position the check valve adaptor
in the mounting slot in the suction flange (40). Align
the adaptor with the flange hole, and secure the as
sembly with the check valve pin (41).
NOTE
If the suction or discharge flanges were removed,
replace the respective gaskets, apply `Permatex
Aviation No. 3 Form‐A‐Gasket' or equivalent com
pound to the mating surfaces, and secure them to
the pump casing with the attaching hardware.
Back Cover Installation And Adjustment
(Figures 3 and 11)
If the wear plate (14) was removed for replace
ment, carefully center it on the back cover and se
MAINTENANCE & REPAIRPAGE E - 18
Page 46
SUPER T SERIES
OM-05514
cure it with the hardware (16 and 17). The wear
plate must be concentric to prevent binding when
the back cover is installed.
The clearance between the impeller and wear plate
is adjusted using four adjusting screws (32) and
locking collars (31). There are 18 detents on the
I.D. of each locking collar. Indexing the collars one
detent on the adjusting screws represents approxi
mately .005 inch (0,13 mm) of wear plate clear
ance. The recommended clearance between the
wear plate and the impeller is .010 to .020 inch
(0,25 to 0,50 mm).
Replace the back cover and wear plate O‐rings (15
and 18) and lubricate them with a generous
amount of No. 2 grease. Clean any scale or debris
from the contacting surfaces in the pump casing
that might interfere or prevent a good seal with the
back cover.
USE TWO REMAINING
ADJUSTING SCREWS AND
LOCKING COLLARS TO
SET FACE CLEARANCE
USE TWO
OPPOSING
BACK COVER NUTS
TO PRESS
BACK COVER
INTO PUMP
CASING
INDEX COLLARS 3
DETENTS COUNTER‐
CLOCKWISE, THEN
TURN CLOCKWISE
UNTIL SCREW
HOLES ALIGN
With the wear plate just touching the impeller, turn
the two free adjusting screws until they engage the
pump casing. Position the locking collars over the
adjusting screws so the holes in the collars for the
locking screws align approximately with the holes
in the cover plate.
Loosen the back cover nuts used to press the back
cover into the pump casing one full turn.
Pull the collars off the adjusting screws, index them
three detents counterclockwise, and reinstall the
collars on the adjusting screws. Use the collars to
turn the adjusting screws clockwise until the holes
in the locking collars realign with the tapped screw
holes in the back cover plate. Secure the locking
collars to the back cover plate with the hardware
(29 and 30). Install the two remaining back cover
nuts snugly against the adjusting screws.
Remove the first two back cover nuts from their
studs. Turn the adjusting screws clockwise until
they engage the pump casing. Install the locking
collars and hardware (29 and 30). Reinstall the
back cover nuts.
Be sure the wear plate does not scrape against the
impeller.
Over time it may be necessary to repeat the adjust
ment process to compensate for normal wear be
tween the impeller and wear plate. When all of the
adjustment has been used on the back cover side
of the pump, an additional 0.125 inch (3,2 mm) of
adjustment may be obtained by removing the ro
tating assembly adjusting shims (13).
Allow an installed pump to completely cool before
draining liquid from the pump casing. Remove the
back cover. Remove the rotating assembly adjust
Figure 11. Installing and Adjusting Back Cover
ing shims, then reinstall the hardware securing the
rotating assembly to the pump casing. Perform the
Screw the four adjusting screws (32) into the
tapped holes in the back cover plate until they are
back cover adjustment procedure described
above to obtain the proper face clearance.
just flush with the machined surface on the back
side of the cover plate.
Align the back cover plate over the studs (34) and
slide it into the pump casing. Use two back cover
nuts (33) on diagonally opposing studs to press
the back cover into the pump casing until the wear
Securing Pump End To Engine
(Figure 5)
Install the shaft key (11, Figure 4) in the shaft key
way. Position the flexible portion of the coupling as
sembly (3) on the shaft as shown in Figure 5.
plate just touches the impeller when the shaft is
turned by hand. Tighten the back cover nuts
evenly to avoid binding.
Align the keyway in the bushing (2) with the shaft
key, and slide it onto the shaft to the dimension
MAINTENANCE & REPAIRPAGE E - 19
Page 47
OM-05514SUPER T SERIES
shown in Figure 5. Rotate the flexible portion of the
coupling until the tapped holes for the two set
screws align with those in the bushing, and install
the setscrews.
Make certain that the flexible portion of the
coupling is mounted as shown in Figure 5.
This is critical. If the coupling is not prop
erly positioned on the shaft, the coupling
parts may not fully engage, or a pre‐load
condition can cause premature bearing
failure.
The end of the shaft must protrude 1.25
inch (32 mm) from the face of the bushing.
This will allow the two portions of the cou
pling to fully engage when the drive flange
is secured to the engine bellhousing, with
out pre‐loading the bearings.
With the flexible portion of the coupling and the
bushing properly positioned on the shaft, tighten
the two setscrews in an alternating sequence until
the bushing and coupling are fully secured. Torque
the setscrews to 14.6 ft. lbs. (175 in. lbs. or 2 m.
kg.).
Install the intermediate guards (28, Figure 4), and
secure the drive flange to the engine bellhousing
with the hardware (6 and 7).
(Figure 1)
Install any leveling shims used under the casing
mounting feet, and secure the casing to the base
with the previously removed hardware.
If a lifting eye was used to move the pump casing,
be sure to remove the lifting eye from the pump
casing.
Do not attempt to lift the complete pump
unit using the lifting eye. It is designed
to facilitate removal or installation of in
dividual components only. Additional
weight may result in damage to the
pump or failure of the eye bolt.
PRESSURE RELIEF VALVE
MAINTENANCE
If the complete coupling assembly is being re
placed, apply `Loctite Retaining Compound No.
242' or equivalent to the threads of the hardware (4
and 5), and secure the outer ring of the coupling to
the engine flywheel by torquing the hardware to 45
ft. lbs. (540 in. lbs. or 6,2 m. kg.).
Using a suitable lifting device, position the pump
end so the flexible portion of the coupling seats in
side the outer ring attached to the engine flywheel.
NOTE
To ease installation, lightly lubricate the rubber por
tion of the coupling with a non‐petroleum basedlubricant such as vegetable oil or glycerin, or a sili
con‐based lubricant such as “WD40” or equivalent.
Do not use petroleum‐based lubricants, or any oth
er substance which may soften or otherwise dam
age the rubber.
(Figure 3)
The back cover is equipped with a pressure relief
valve (23) to provide additional safety for the pump
and operator (refer to Liquid Temperature AndOverheating in OPERATION).
It is recommended that the pressure relief valve as
sembly be replaced at each overhaul, or any time
the pump overheats and activates the valve. Never
replace this valve with a substitute which has not
been specified or provided by the Gorman‐Rupp
Company.
Periodically, the valve should be removed for in
spection and cleaning. When reinstalling the relief
valve, apply `Loctite Pipe Sealant With Teflon No.
592', or equivalent compound, on the relief valve
threads. Position the valve as shown in Figure 3
with the discharge port pointing down.
MAINTENANCE & REPAIRPAGE E - 20
Page 48
SUPER T SERIES
OM-05514
Final Pump Assembly
(Figure 1)
Be sure the pump is secured to the base and en
gine. Be sure to install any guards used over the ro
tating members.
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.
Install the suction and discharge lines and open all
valves. Make certain that all piping connections are
tight, properly supported and secure.
Be sure the pump and engine have been properly
lubricated, see LUBRICATION.
Remove the fill cover assembly (46, Figure 3) and
fill the pump casing with clean liquid. Reinstall the
fill cover and tighten it. Refer to OPERATION, Sec
tion C, before putting the pump back into service.
tioned horizontally to provide proper drainage.
Bearings
(Figure 4)
The bearing housing was fully lubricated when
shipped from the factory. Check the oil level regu
larly through the sight gauge (26)
the middle of the gauge. When lubrication is re
quired, add SAE No. 30 non‐detergentoil through
the hole for the air vent (7). Do not over‐lubricate.
Over‐lubrication can cause the bearings to over‐
heat, resulting in premature bearing failure.
and maintain it at
NOTE
The white reflector in the sight gauge must be posi
tioned horizontally to provide proper drainage.
Under normal conditions, drain the bearing hous
ing once each year and refill with approximately 24
ounces (0,7 liter) clean oil. Change the oil more fre
quently if the pump is operated continuously or in
stalled in an environment with rapid temperature
change.
LUBRICATION
Seal Assembly
(Figure 4)
Before starting the pump, remove the vented plug
(6) and fill the seal cavity with approximately 88
ounces (2,6 liter) of SAE No. 30 non‐detergent oil to
the middle of the sight gauge (25)and maintain it at
the middle of the gauge. Clean and reinstall the
vented plug. Maintain the oil at this level.
NOTE
The white reflector in the sight gauge must be posi
Monitor the condition of the bearing lubri
cant regularly for evidence of rust or mois
ture condensation. This is especially im
portant in areas where variable hot and
cold temperatures are common.
For cold weather operation, consult the factory or a
lubricant supplier for the recommended grade of
oil.
Engine
Consult the literature supplied with the engine, or
contact your local engine representative.
MAINTENANCE & REPAIRPAGE E - 21
Page 49
For U.S. and International Warranty Information,
Please Visit www.grpumps.com/warranty
or call:
U.S.: 419-755-1280
International: +1-419-755-1352
For Canadian Warranty Information,
Please Visit www.grcanada.com/warranty
or call:
519-631-2870
THE GORMAN‐RUPP COMPANY D MANSFIELD, OHIO
GORMAN‐RUPP OF CANADA LIMITED D ST. THOMAS, ONTARIO, CANADA
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