GORMAN-RUPP PUMPS 60 Series User manual

PUBLICATION NUMBER OM−04020
February 14, 1994
Rev. A 05/07/96
THE GORMAN-RUPP COMPANY DMANSFIELD, OHIO
GORMAN-RUPP OF CANADA LIMITED DST. THOMAS, ONTARIO, CANADA Printed in U.S.A.
e1994 The Gorman-Rupp Company
60 SERIES PUMPS

Register your new
Gorman-Rupp pump online at
www.grpumps.com
Valid serial number and e-mail address required.
RECORD YOUR PUMP MODEL AND SERIAL NUMBER
Please record your pump model and serial number in the
spaces provided below. Your Gorman-Rupp distributor
needs this information when you require parts or service.
Pump Model:
Serial Number:

OM−04020 60 SERIES PUMPS
PAGE I − 1INTRODUCTION
INTRODUCTION
Thank You for purchasing a Gorman-Rupp 60
Series Pump. Read this manual carefully to learn
how to safely install and operate your pump. Fail-
ure to do so could result in personal injury or dam-
age to the pump.
A set of three manuals accompanies your pump.
Each set consists of three parts; the Installation/
Operation Manual contains essential information
on installing and operating the pump. However,
since pump installations are seldom identical,
some of the information only summarizes general
recommendations and practices required to in-
spect, position, and arrange the pump and piping.
The Parts List Manual provides performance
curve(s), a pump model cross-section drawing,
and parts list for your pump.
The Maintenance and Repair Manual provides
troubleshooting and maintenance instructions re-
quired to properly diagnose operational problems,
and to service the pump components. Contact the
factory for the authorized repair facility closest to
you.
This pump is a 60 Series centrifugal pump, with
straight-in suction without a suction check valve.
The pump is designed to handle petroleum prod-
ucts and other liquids that do not contain solids.
For specific service, contact your Gorman-Rupp
distributor or the Gorman-Rupp Company.
The basic pump is not furnished with a mounting
base and power source; however, these items are
available from the factory as optional equipment.
The pump is designed to be driven by an explo-
sion-proof motor.
Because pump installations are seldom identical,
this manual cannot possibly provide detailed in-
structions and precautions for every aspect of
each specific application. Therefore, it is the re-
sponsibility of the owner/installer of the pump to
ensure that applications not addressed in this
manual are performed only after establishing that
neither operator safety nor pump integrity are com-
promised by the installation. Pumps and related
equipment must be installed and operated ac-
cording to all national, local and industry stan-
dards.
If there are any questions regarding the pump
which are not covered in this manual or in other lit-
erature accompanying the unit, please contact
your Gorman-Rupp distributor or the Gorman-
Rupp Company:
The Gorman-Rupp Company
P.O. Box 1217
Mansfield, Ohio 44901−1217
or:
Gorman-Rupp of Canada Limited
70 Burwell Road
St. Thomas, Ontario N5P 3R7
CONTENTS
SAFETY − SECTION A
INSTALLATION − SECTION B
GENERAL INFORMATION PAGE B − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PUMP DIMENSIONS PAGE B − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PREINSTALLATION INSPECTION PAGE B − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
POSITIONING PUMP PAGE B − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GROUNDING PAGE B − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SUCTION AND DISCHARGE PIPING PAGE B − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SUCTION LINES PAGE B − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DISCHARGE LINES PAGE B − 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ALIGNMENT PAGE B − 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OPERATION − SECTION C
GENERAL INFORMATION PAGE C − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PRIMING PAGE C − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
STARTING PAGE C − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

OM−0402060 SERIES PUMPS
PAGE I − 2 INTRODUCTION
OPERATION PAGE C − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
STOPPING PAGE C − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BEARING TEMPERATURE CHECK PAGE C − 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RECORDING MODEL AND
SERIAL NUMBERS
Please record the pump model, serial number, volt-
age, and motor frame size in the spaces provided
below. Your Gorman-Rupp distributor needs this
information when you require parts or service.
Pump Model:
Serial Number:
WARRANTY INFORMATION
The warranty provided with your pump is part of
Gorman-Rupp’s support program for customers
who operate and maintain their equipment as de-
scribed in this and the other accompanying litera-
ture. Please note that should the equipment be
abused or modified to change its performance be-
yond the original factory specifications, the war-
ranty will become void and any claim will be de-
nied.
The following are used to alert personnel to procedures which require special attention, to those which
could damage equipment, and to those which could be dangerous to personnel:
Immediate hazards which WILL result in
severe personal injury or death. These
instructions describe the procedure re-
quired and the injury which will result
from failure to follow the procedure.
Hazards or unsafe practices which
COULD result in severe personal injury
or death. These instructions describe
the procedure required and the injury
which could result from failure to follow
the procedure.
Hazards or unsafe practices which COULD
result in minor personal injury or product or
property damage. These instructions de-
scribe the requirements and the possible
damage which could result from failure to
follow the procedure.
NOTE
Instructions to aid in installation, operation, and
maintenance or which clarify a procedure.

OM−04020 60 SERIES PUMPS
PAGE A − 1SAFETY
SAFETY − SECTION A
The following information applies
throughout this manual to Gorman-
Rupp 60 Series basic pumps.
Because pump installations are seldom
identical, this manual cannot possibly
provide detailed instructions and pre-
cautions for each specific application.
Therefore, it is the owner/installer’s re-
sponsibility to ensure that applications
not addressed in this manual are per-
formed only after establishing that nei-
ther operator safety nor pump integrity
are compromised by the installation.
Before attempting to install, operate, or
service this pump, familiarize yourself
with this manual, and with all other liter-
ature shipped with the pump. Unfamil-
iarity with all aspects of pump operation
covered in this manual could lead to de-
struction of equipment, injury, or death
to personnel.
Before attempting to open or service the
pump:
1. Familiarize yourself with this man-
ual.
2. Shut off the incoming power and
lock it out or take other action to
ensure that the pump will remain
inoperative.
3. Allow the pump to completely cool
if overheated.
4. Check the temperature before
opening any covers, plates, or
plugs.
5. Close the suction and discharge
valves.
6. Vent the pump slowly and cau-
tiously.
7. Drain the pump.
This pump is designed to handle petro-
leum products or other similar hydro-
carbon liquids. Do not attempt to pump
corrosive materials, or any liquids
which may damage the pump or endan-
ger personnel as a result of pump fail-
ure.
This pump is designed to be used with
volatile and/or flammable liquids; be
certain proper safety practices are fol-
lowed before operating or servicing the
pump. Provide adequate ventilation,
prohibit smoking, wear static-resistant
clothing and shoes. Clean up all fuel
spills immediately after occurrence.
Do not operate the pump against a
closed discharge valve for long periods
of time. If operated against a closed dis-
charge valve, pump components will
deteriorate, and the liquid could come
to a boil, build pressure, and cause the
pump casing to rupture or explode.
After the pump has been installed, make
certain that the pump and all piping con-
nections are tight, properly supported
and secure before operation.

60 SERIES PUMPS OM−04020
PAGE A−2 SAFETY
This pump is designed to be used with
volatile and/or flammable liquids; over-
heating may produce dangerous fumes.
Take precautions to ensure the area sur-
rounding the pump is adequately venti-
lated. Allow the pump to completely
cool and use extreme caution when
venting the pump, or when removing
covers, plates, plugs, or fittings.
Overheated pumps can cause severe
burns and injuries, and produce explo-
sive fumes. If overheating of the pump
occurs:
1. Stop the pump immediately.
2. Ventilate the area.
3. Allow the pump to completely cool.
4. Check the temperature before
opening any covers, plates,
gauges, or plugs.
5. Vent the pump slowly and cau-
tiously.
6. Refer to instructions in this manual
before restarting the pump.
Do not install and operate a non-explo-
sion proof motor in an explosive atmo-
sphere. Install, connect, and operate
the motor in accordance with The Na-
tional Electric Code and all local codes.
If there is a conflict between the instruc-
tions in the manual accompanying the
unit and The National Electric Code or
the applicable local code, The National
or local code shall take precedence. All
electrical equipment supplied with this
pump conformed to applicable federal
regulations and national codes in effect
on the date of manufacture.

OM−04020 60 SERIES PUMPS
PAGE B − 1INSTALLATION
INSTALLATION − SECTION B
GENERAL INFORMATION
Review all SAFETY information in Section A.
Since pump installations are seldom identical, this
section is intended only to summarize general rec-
ommendations and practices required to inspect,
position, and arrange the pump and piping. If there
are any questions concerning your specific instal-
lation, contact your Gorman-Rupp distributor or
the Gorman-Rupp Company.
Most of the information pertains to a standard stat-
ic lift application, where the pump is positioned
above the free level of the 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 mount-
ing, line configuration, and priming must be tai-
lored to the specific application. Since the pres-
sure supplied to the pump is critical to perform-
ance and safety, be sure to limit the incoming pres-
sure to 50% of the maximum permissible operating
pressure shown on the pump performance curve.
For further assistance, contact your Gorman-Rupp
distributor or the Gorman-Rupp Company.
PUMP DIMENSIONS
For the approximate physical dimensions of your
pump, refer to the pump specification data sheet or
contact your Gorman-Rupp distributor or the Gor-
man-Rupp Company.
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 for cracks, dents, damaged
threads, and other obvious damage.
b. Check for and tighten loose attaching hard-
ware. Since gaskets tend to shrink after dry-
ing, check for loose hardware at mating sur-
faces.
c. Carefully read all tags, decals, and markings
on the pump assembly, and perform all duties
indicated. Note the direction of rotation indi-
cated on the pump. Check that the pump
shaft rotates in the required direction.
Only operate this pump in the direction in-
dicated on the pump body and/or the ac-
companying decal. Reverse rotation of the
shaft will adversely effect pump perform-
ance, and the pump could be seriously
damaged.
d. Check levels and lubricate as necessary. Re-
fer to LUBRICATION in the MAINTENANCE
AND REPAIR section of this manual and per-
form duties as instructed.
e. If the pump and power source have been
stored for more than 12 months, some of the
components or lubricants may have ex-
ceeded their maximum shelf life. These must
be inspected or replaced to ensure maxi-
mum pump service.
If the maximum shelf life has been exceeded, or if
anything appears to be abnormal, contact your
Gorman-Rupp distributor or the factory to deter-
mine the repair or updating policy. Do not put the
pump into service until appropriate action has
been taken.
POSITIONING PUMP
Lifting
Use lifting equipment with a capacity of at least 5
times the weight of the pump, including the

60 SERIES PUMPS OM−04020
PAGE B − 2 INSTALLATION
weight of options and customer installed
accessories. Customer installed equipment such
as suction and discharge piping and fittings must
be removed before attempting to lift the pump.
The pump assembly can be seriously
damaged if the cables or chains used to lift
and move the unit are improperly wrapped
around the pump.
For the approximate weight of your pump, refer to
the pump specification data sheet or contact your
Gorman-Rupp distributor or the Gorman-Rupp
Company.
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.
GROUNDING
To eliminate electrostatic build-up by the liquid be-
ing pumped, it is recommended that the pump be
grounded by attaching the ground wire assembly
to a ground rod. Install the ground rod in accor-
dance with the National Electrical Code and all lo-
cal codes. Be sure the clamp or fastener has made
a tight electrical connection with the rod.
Inspect and test the ground wire assembly
for conductivity. Replace broken or frayed
wire before resuming operation.
SUCTION AND DISCHARGE PIPING
Damage to the pump resulting from debris
in the suction line will not be covered by the
pump warranty. Before connecting the
suction and discharge piping, carefully
check the storage tank and piping for con-
struction debris such as nuts, bolts, wire,
weld slag, and other foreign material. In-
stall a commercially available 80 mesh
screen and a filter in the suction line to pre-
vent debris from entering the pump.
Pump performance is adversely effected by in-
creased suction lift, discharge elevation, and fric-
tion losses. See the performance curve and oper-
ating range shown in the Parts List manual to be
sure your overall application allows the 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-
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.

OM−04020 60 SERIES PUMPS
PAGE B − 3INSTALLATION
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
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.
Refer to Figure 1 for the recommended configura-
tion of the suction line.
INCORRECT PITCH
VAPOR
POCKETS
INCORRECT LOOPS
RECOMMENDED
NO
POCKETS
PITCH UP TO
SUCTION
WITH NO
LOOPS
VAPOR
POCKETS
Figure 1. Suction Line Configuration
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-
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.
Refer to Figure 2 for the recommended entrance
conditions using fittings.

60 SERIES PUMPS OM−04020
PAGE B − 4 INSTALLATION
POOR ENTRANCE CONDITIONS
RECOMMENDED ENTRANCE CONDITIONS
CHECK
VALVE
REDUCER HORIZONTAL
ELBOW
GATE
VALVE
3 TO 4 DIA’S OF
STRAIGHT PIPE
ECCENTRIC
REDUCER
3 TO 4 DIA’S OF
STRAIGHT PIPE GATE
VALVE
HORIZONTAL
ELBOW
Figure 2. Entrance Conditions Using Fittings
Strainers
A suction strainer was not furnished with this pump
since it is not designed to handle liquids containing
solids. However, to protect the pump from acciden-
tal damage a commercially available 80 mesh
screen should be installed in the suction line. Make
certain that the total open area of the screen is at
least three or four times the cross section of the
suction line to ensure an adequate supply of liquid
to the pump.
Damage to the pump resulting from debris
in the suction line will not be covered by the
pump warranty. Before connecting the
suction and discharge piping, carefully
check the storage tank and piping for con-
struction debris such as nuts, bolts, wire,
weld slag, and other foreign material. In-
stall a commercially available 80 mesh
screen and a filter in the suction line to pre-
vent debris from entering the pump.
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. Do not use excessive amounts of com-
pound at the suction and discharge flanges since it
can enter the pump during initial startup and cause
difficulty in priming. Use the compound sparingly.
The pipe dope should be compatible with the liquid
being pumped.
Suction Lines In Sumps
If a single suction line is installed in a sump, it
should be positioned away from the wall of the
sump at a distance equal 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.

OM−04020 60 SERIES PUMPS
PAGE B − 5INSTALLATION
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.
Suction Line Positioning
The depth of submergence of the suction line is
critical to efficient pump operation. Figure 3 shows
recommended minimum submergence vs. veloc-
ity.
NOTE
The pipe submergence required may be reduced
by installing a standard pipe increaser fitting at the
end of 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).
Figure 3. Recommended Minimum Suction Line Submergence vs. Velocity
DISCHARGE LINES
Siphoning
Do not terminate the discharge line at a level lower
than that of the liquid being pumped unless a si-
phon breaker is used in the line. Otherwise, a si-
phoning action causing damage to the pump
could result.
Valves
A check valve in the discharge line is normally rec-
ommended, but it is not necessary in low dis-
charge head applications.

60 SERIES PUMPS OM−04020
PAGE B − 6 INSTALLATION
It 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.
If application involves a high discharge
head, gradually close the discharge
throttling valve before stopping the pump.
ALIGNMENT
The alignment of the pump and its power source is
critical for trouble-free mechanical operation. In
either a flexible coupling or V-belt driven system,
the driver and pump must be mounted so that their
shafts are aligned with and parallel to each other. It
is imperative that alignment be checked after the
pump and piping are installed, and before opera-
tion.
NOTE
Check Rotation, Section C, before final alignment
of the pump.
When mounted at the Gorman-Rupp factory, driver
and pump are aligned before shipment. Misalign-
ment will occur in transit and handling. Pumps
must be checked and realigned before operation.
Before checking alignment, tighten the foundation
bolts. The pump casing feet and/or pedestal feet,
and the driver mounting bolts should also be tightly
secured.
When checking alignment, disconnect
the power source to ensure that the
pump will remain inoperative.
Adjusting the alignment in one direction
may alter the alignment in another direc-
tion. Check each procedure after altering
alignment.
Coupled Drives
When using couplings, the axis of the power
source must be aligned to the axis of the pump
shaft in both the horizontal and vertical planes.
Most couplings require a specific gap or clearance
between the driving and the driven shafts. Refer to
the coupling manufacturer’s service literature.
Align spider insert type couplings by using calipers
to measure the dimensions on the circumference
of the outer ends of the coupling hub every 90 de-
grees. The coupling is in alignment when the hub
ends are the same distance apart at all points (see
Figure 4).
Figure 4. Aligning Spider-Type Couplings
Align non-spider type couplings by using a feeler
gauge or taper gauge between the coupling halves
every 90 degrees. The coupling is in alignment
when the hubs are the same distance apart at all
points (see Figure 5).
Check parallel adjustment by laying a straightedge
across both coupling rims at the top, bottom, and
side. When the straightedge rests evenly on both
halves of the coupling, the coupling is in horizontal
parallel alignment. If the coupling is misaligned,
use a feeler gauge between the coupling and the

OM−04020 60 SERIES PUMPS
PAGE B − 7INSTALLATION
straightedge to measure the amount of misalign-
ment.
Figure 5. Aligning Non-Spider Type Couplings
V-Belt Drives
When using V-belt drives, the power source and
the pump must be parallel. Use a straightedge
along the sides of the pulleys to ensure that the pul-
leys are properly aligned (see Figure 6). In drive
systems using two or more belts, make certain that
the belts are a matched set; unmatched sets will
cause accelerated belt wear.
SHAFTS
NOT
PARALLEL
SHAFTS
NOT
IN LINE
MISALIGNED
SHAFTS PARALLEL
AND
SHEAVES IN LINE
ALIGNED
Figure 6. Alignment of V-Belt Driven Pumps
Tighten the belts in accordance with the belt manu-
facturer’s instructions. If the belts are too loose,
they will slip; if the belts are too tight, there will be
excessive power loss and possible bearing failure.
Select pulleys that will match the proper speed ra-
tio; over speeding the pump may damage both
pump and power source.
Do not operate the pump without the
guard in place over the rotating parts.
Exposed rotating parts can catch cloth-
ing, fingers, or tools, causing severe in-
jury to personnel.

OM−04020 60 SERIES PUMPS
PAGE C − 1OPERATION
OPERATION − SECTION C
GENERAL INFORMATION
Review all SAFETY information in Section A.
Follow the instructions on all tags, labels and
decals attached to the pump.
This pump is designed to handle petro-
leum products or other similar hydro-
carbon liquids. Do not attempt to pump
water, corrosive materials, or any liq-
uids which may damage the pump or en-
danger personnel as a result of pump
failure.
Pump speed and operating condition
points must be within the continuous per-
formance range shown on the curve (see
the Parts List Manual, Page 1).
PRIMING
Install the pump and piping as described in IN-
STALLATION. Make sure that the piping connec-
tions are tight, and that the pump is securely
mounted. Check that the pump is properly lubri-
cated (see LUBRICATION in MAINTENANCE
AND REPAIR).
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.
Since this pump is not a self-priming pump, it will
require an external priming device when installed
in a static lift application. Many standard centrifu-
gal models are equipped with a hand operated
vacuum pump, exhaust primer, or ejector for this
purpose. If a priming device was not furnished with
the pump, it may be ordered from the factory as an
option.
Before attempting to operate the priming device,
close the discharge throttling valve. (Installation of
a spring-loaded check valve is also recommended
to facilitate priming.) Once the pump is fully
primed, close the valve between the priming de-
vice and pump to preserve the prime. Start the
pump, if not already in operation, and open the dis-
charge valve slowly and fill the discharge line.
When installed in a flooded suction application,
simply open the system valves and permit the in-
coming liquid to evacuate the air. After the pump
and piping system have completely filled, evacu-
ate any remaining air pockets in the pump or suc-
tion line by loosening pipe plugs or opening bleed-
er valves.
If the pump is installed within a closed
building such as a pump house, venting
lines to the outside of the building should
be installed in accordance with National
and local codes.
Hand Primers
Hand-operated primers are usually mounted on
the pump and, when operated, draw air out of the
suction line and casing.
To prime a pump with a hand vacuum pump open
the cock on the pump priming line. Operate the
hand pump until liquid flows out of the check valve
on the bottom of the primer pump. Once the pump
is primed, close the valve located between the

60 SERIES PUMPS OM−04020
PAGE C − 2 OPERATION
primer and the pump so that the prime will not be
lost.
DRAIN
COCK
HANDLE
Figure 1. Hand Primer Assembly
Exhaust Primers
Engine driven pumps normally take advantage of
the engine exhaust gases by using them to operate
an exhaust primer. The exhaust primer is directed
through a venturi which creates a vacuum in the
pump casing in order to fill the suction line and cas-
ing with liquid.
To prime a pump using an exhaust primer, open the
gas cock in the priming line and engage the ex-
haust primer until liquid is thrown out of the ejector
nozzle.
GAS
COCK
HANDLE
Figure 2. Exhaust Primer Assembly
Auxiliary Ejectors
Ejectors function much like exhaust primers. They
may be operated by steam, compressed air, water
or exhaust gases. To prime a pump using an ejec-
tor, open the gas cock in the priming line and oper-
ate the ejector until liquid is thrown out the ejector
nozzle.
Vacuum Pumps
Air can be exhausted to prime a pump by using a
vacuum pump. Either a wet type or a dry type vacu-
um pump may be used; however, a wet type is pre-
ferred since it will not be damaged if liquid enters it.
If a dry vacuum pump is used, provisions must be
made to keep liquid from entering it.
STARTING
Consult the operations manual furnished with the
power source.
Before connecting a motor to the incoming power,
check that the electrical service available matches
the pump motor requirements stamped on the mo-
tor nameplate. Check that the motor speed meets
pump specifications. Check the performance
curve (Parts List Manual on page 1) to see at what
speed the pump is designed to be driven.
Rotation
The correct direction of pump rotation is indicated
by an arrow on the pump body or accompanying
decals. The pump could be damaged and per-
formance adversely affected by incorrect rotation.
If pump performance is not within the specified lim-
its (see the curve in the Parts List Manual on page
1), check the direction of rotation before further
troubleshooting.
Consult the operating manual furnished with the
power source before attempting to start the power
source.
If an electric motor is used to drive the pump, re-
move V-belts, couplings, or otherwise disconnect
the pump from the motor before checking motor
rotation. Operate the motor independently while
observing the direction of the motor shaft, or cool-
ing fan.
If rotation is incorrect on a three-phase motor, have
a qualified electrician interchange any two of the
three phase wires to change direction. If rotation is
incorrect on a single-phase motor, consult the lit-
erature supplied with the motor for specific instruc-
tions.

OM−04020 60 SERIES PUMPS
PAGE C − 3OPERATION
OPERATION
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.
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 cool before servicing 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 cools, drain the liquid from
the pump by removing the casing drain
plug. Use caution when removing the
plug to prevent injury to personnel from
hot liquid.
Strainer Check
A suction strainer was not furnished with this pump
but an 80 mesh screen may have been installed by
the user. Check the screen regularly, and clean it
as necessary. The screen should also be checked
if pump flow rate begins to drop. If a vacuum suc-
tion gauge has been installed, monitor and record
the readings regularly to detect screen blockage.
Pump Vacuum Check
NOTE
Petroleum products are very sensitive to changes
in temperature. Warmer temperatures elevate the
product vapor pressure resulting in low vacuum
readings. Do not mistake temperature problems for
faulty pump installation or performance.
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 15
to 17 inches (381 to 432 mm) or more of mercury
for petroleum or 20 inches (508 mm) of mercury in
other service. 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
Never halt the flow of liquid suddenly. If the liquid
being pumped is stopped abruptly, damaging
shock waves can be transmitted to the pump and
piping system. Close all connecting valves slowly.
If the application involves a high discharge
head, gradually close the discharge
throttling valve before stopping the pump.
After stopping the pump, shut off the incoming
power and lock it out, or take other action to ensure
that the pump will remain inoperative.

60 SERIES PUMPS OM−04020
PAGE C − 4 OPERATION
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.
If the application of this pump is limited to petro-
leum products, normal freezing conditions will not
damage the pump. However, during extremely se-
vere conditions care should be exercised during
start-up, especially if the pump has been idle for
more than a few hours.
BEARING TEMPERATURE CHECK
The standard bearings used in this pump are per-
manently sealed and lubricated by the manufac-
turer. However due to temperature changes and
the danger of moisture contamination, the bearing
cavity is also partially filled with grease.
Optional oil lubricated bearings are not fully
sealed, and oil is required within the bearing hous-
ing to lubricate them and protect them from mois-
ture condensation.
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.
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 the MAINTE-
NANCE AND REPAIR Manual). Bearing overheat-
ing 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.

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 DMANSFIELD, OHIO
GORMAN-RUPP OF CANADA LIMITED DST. THOMAS, ONTARIO, CANADA