Gorman-Rupp Pumps PA6A60-4045D User Manual

ACDE

PUBLICATION NUMBER OM−04402

January 29, 1996

Rev. F 01-11-05

PRIME-AIRER

SERIES PUMPS

(Including 60-Series Pump End)

THE GORMAN-RUPP COMPANY D MANSFIELD, OHIO

GORMAN-RUPP OF CANADA LIMITED D ST. THOMAS, ONTARIO, CANADA Printed in U.S.A.

www.gormanrupp.com

ECopyright by the Gorman-Rupp Company

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

OM−04402 PA SERIES PUMPS

INTRODUCTION

Thank You for purchasing a Gorman-Rupp Prime-

AireT priming-assisted 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.

A set of 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 inspect, po­sition, and arrange the pump and piping.

The Parts List Manual provides a performance
curve, pump model cross-section drawing, and
parts list for your pump.

The Maintenance and Repair Manual provides
troubleshooting and maintenance instructions re­quired to properly diagnose operational problems,
and to service the pump components.

This pump is a PA Series, priming-assisted centrif­ugal model. The unit is designed for handling non­volatile, non-flammable liquids containing speci­fied entrained solids.

Because pump installations are seldom identical,
this manual cannot possibly provide detailed in­structions and precautions for every aspect of
each specific application. Therefore, it is the re­sponsibility of the owner/installer of the pump to
ensure that applications not addressed in this
manual are performed only after establishing that
neither operator safety nor pump integrity are com­promised by the installation. Pumps and related
equipment must be installed and operated ac­cording to all national, local and industry stan­dards.

If there are any questions regarding the pump
which are not covered in this manual or in other lit­erature accompanying the unit, please contact
your Gorman-Rupp distributor or the Gorman­Rupp Company:

The Gorman-Rupp Company

P.O. Box 1217

Mansfield, Ohio 44901−1217

Phone: (419) 755−1011

or:

Gorman-Rupp of Canada Limited

70 Burwell Road

St. Thomas, Ontario N5P 3R7

Phone: (519) 631−2870

CONTENTS

SAFETY − SECTION A
INSTALLATION − SECTION B

PREINSTALLATION INSPECTION PAGE B − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

POSITIONING PUMP PAGE B − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SUCTION AND DISCHARGE PIPING PAGE B − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SUCTION LINES PAGE B − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DISCHARGE LINES PAGE B − 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ALIGNMENT PAGE B − 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

OPERATION − SECTION C

OPERATION OF MOTOR DRIVEN UNITS PAGE C − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

OPERATION OF ENGINE DRIVEN UNITS PAGE C − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

OPERATIONAL CHECKS (All Models) PAGE C − 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

STOPPING (Motor Driven Units) PAGE C − 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

STOPPING (Non-Auto-Start Engine Driven Units) PAGE C − 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

STOPPING (Auto-Start Engine Driven Units) PAGE C − 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PERIODIC CHECKS (All Models) PAGE C − 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PERIODIC CHECKS (Engine Driven Units) PAGE C − 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

COLD WEATHER PRESERVATION (All Models) PAGE C − 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PAGE I − 1INTRODUCTION

OM−04402PA SERIES PUMPS

RECORDING MODEL AND

WARRANTY INFORMATION

SERIAL NUMBERS

Please record the model and serial number for
your Gorman-Rupp Prime-AireT priming-assisted
pump in the spaces provided below. Your Gorman­Rupp distributor needs this information when you
require parts or service.

Model:

Serial Number:

The following are used to alert personnel to procedures which require special attention, to those which
could damage equipment, and to those which could be dangerous to personnel:

Immediate hazards which WILL result in
severe personal injury or death. These
instructions describe the procedure re­quired and the injury which will result
from failure to follow the procedure.

The warranty provided with your Prime-AireT pri­ming-assisted pump is part of Gorman-Rupp’s
support program for customers who operate and
maintain their equipment as described in this and
the other accompanying literature. Please note
that should the equipment be abused or modified
to change its performance beyond the original fac­tory specifications, the warranty will become void
and any claim will be denied.

Hazards or unsafe practices which COULD
result in minor personal injury or product or
property damage. These instructions de­scribe the requirements and the possible
damage which could 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.

NOTE

Instructions to aid in installation, operation, and
maintenance or which clarify a procedure.

PAGE I − 2 INTRODUCTION

PA SERIES PUMPS

OM−04402

SAFETY - SECTION A

This information applies to Prime AireR
Series pumps. Refer to the manual ac­companying the engine or power
source before attempting to begin oper­ation.

Because pump installations are seldom
identical, this manual cannot possibly
provide detailed instructions and pre­cautions for each specific application.
Therefore, it is the owner/installer’s re­sponsibility to ensure that applications
not addressed in this manual are per­formed only after establishing that nei­ther operator safety nor pump integrity
are compromised by the installation.

Before attempting to open or service the
pump:

1. Familiarize yourself with this man­ual.

2. Shut down the engine and discon­nect the positive battery cable, or
lock out incoming power to the mo­tor and take precautions to ensure
that the pump will remain inopera­tive.

3. Allow the pump to completely cool
if overheated.

4. Check the temperature and make
sure the pump is cool before open­ing any covers, plates, or plugs.

5. Close the suction and discharge
valves.

6. Vent the pump slowly and cau­tiously.

7. Drain the pump.

ing away from the unit to prevent injury
during automatic operation. Disconnect
the positive battery cable before per­forming any maintenance. Failure to do
so may result in serious personal injury.

This pump is designed to handle most
non-volatile, non-flammable liquids
containing specified entrained solids.
Do not attempt to pump volatile, corro­sive, or flammable liquids which may
damage the pump or endanger person­nel as a result of pump failure.

Use lifting and moving equipment in
good repair and with adequate capacity
to prevent injuries to personnel or dam­age to equipment. Attach lifting equip­ment to the lifting device fitted to the
pump. If chains or cable are wrapped
around the pump to lift it, make certain
that they are positioned so as not to
damage the pump, and so that the load
will be balanced. 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 pump has been installed, make
certain that the pump and all piping or
hose connections are tight, properly
supported and secure before operation.

If the pump is equipped with the auto­matic starting system, it is subject to au­tomatic restart. Keep hands and cloth-

Do not operate the pump against a
closed discharge valve. If operated

PAGE A − 1SAFETY

against a closed discharge valve, pump
components will deteriorate, and the
liquid could come to a boil, build pres­sure, and cause the pump casing to rup­ture or explode. Momentary closure of a
discharge valve is acceptable only
when required for startup or shutdown
procedures.

Do not remove plates, covers, gauges,
pipe plugs, or fittings from an over­heated pump. Vapor pressure within the
pump can cause parts being disen­gaged to be ejected with great force. Al­low the pump to cool completely before
servicing.

PA SERIES PUMPSOM−04402

Make sure the pump is level. Lower jack
stands and chock the wheels, if so
equipped. Use caution when positioning
the skid-mounted unit to prevent damage
to the fuel tank.

Do not operate an internal combustion
engine in an explosive atmosphere.
When operating an internal combustion
engine in an enclosed area, make sure
exhaust fumes are piped to the outside.
These fumes contain carbon monoxide,
a deadly gas that is colorless, tasteless
and odorless.

This pump is may be used to handle ma­terials which could cause illness
through direct exposure or emitted
fumes. Wear adequate protective cloth­ing when working on the pump or pip­ing.

Do not operate the pump without guards
in place over the rotating parts. Ex­posed rotating parts can catch clothing,
fingers or tools, causing severe injury to
personnel.

Fuel used by internal combustion en­gines 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 run­ning 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. Refer to the Performance
Curve in the Parts List Manual for the
maximum continuous operating speed
for this pump.

PAGE A − 2 SAFETY

PA SERIES PUMPS OM−04402

INSTALLATION − SECTION B

Review all SAFETY information in Section A.

Since pump installations are seldom identical, this
section offers only general recommendations and
practices required to inspect, position, and ar­range the pump and piping.

Most of the information pertains to a standard
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
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.

Only operate this pump in the direction in­dicated by the arrow on the pump body
and on the accompanying decal. Other­wise, the impeller could become loosened
from the shaft and seriously damage the
pump.

d. Check levels and lubricate as necessary. Re-

fer to LUBRICATION in the Maintenance and
Repair Manual and perform duties as in­structed.

e. If the pump has been stored for more than 12

months, some of the components or lubri­cants may have exceeded their maximum
shelf life. These must be inspected or re-
placed to ensure maximum pump service.

For further assistance, contact your Gorman-Rupp
distributor or the Gorman-Rupp Company.

PREINSTALLATION INSPECTION

The pump assembly was inspected and tested be­fore shipment from the factory. Before installation,
inspect the pump for damage which may have oc­curred during shipment. Check as follows:

a. Inspect the pump for cracks, dents, damaged

threads, and other obvious damage.

b. Check for and tighten loose attaching hard-

ware. Since gaskets tend to shrink after dry­ing, check for loose hardware at mating sur­faces.

c. Carefully read all tags, decals, and markings

on the pump assembly, and perform all duties
indicated. Note that the pump shaft rotates in
the required direction.

If the maximum shelf life has been exceeded, or if
anything appears to be abnormal, contact your
Gorman-Rupp distributor or the factory to deter­mine the repair or updating policy. Do not put the
pump into service until appropriate action has
been taken.

Battery Installation (Engine Driven Units)

Unless otherwise specified on the pump order, the
engine battery is not included with engine driven
units.

Refer to the information accompanying the battery
and/or electrolyte solution for activation and charg­ing instructions.

Before installing the battery, clean the positive and
negative cable connectors, and the battery termi­nals. Secure the battery by tightening the
holddown brackets. The terminals and clamps
may be coated with petroleum jelly to retard corro­sion. Connect and tighten the positive cable first,
then the negative cable.

PAGE B − 1INSTALLATION

OM−04402 PA SERIES PUMPS

POSITIONING PUMP

Use lifting and moving equipment in
good repair and with adequate capacity
to prevent injuries to personnel or dam­age to equipment. Attach lifting equip­ment to the lifting device fitted to the
pump. If chains or cable are wrapped
around the pump to lift it, make certain
that they are positioned so as not to
damage the pump, and so that the load
will be balanced. 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

Use lifting and moving equipment with a capacity
of at least 5 times the weight of the pump, not in­cluding the weight of any customer installed ac­cessories. Customer-installed equipment such as
suction and discharge piping must be removed
before attempting to lift. Contact the factory or the
Pump Specification Data Sheet for the approxi­mate weight of your pump.

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 attempt­ing to operate the pump.

If the pump has been mounted on a mov­able base, do not attempt to operate the
pump unless the unit is level. Be sure
the leveling stands are positioned on a
solid surface, and the wheels are
chocked.

SUCTION AND DISCHARGE PIPING

Pump performance is adversely effected by in­creased suction lift, discharge elevation, and fric­tion losses. See the Performance Curve in the Parts
List Manual to be sure your overall application al­lows 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, rein­forced type to prevent collapse under suction. Us­ing piping couplings in suction lines is not recom­mended.

Line Configuration

The pump assembly can be seriously
damaged if the chains or cables 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 mount­ing is essential for proper operation. The pump
may have to be supported or shimmed to provide
for level operation and eliminate vibration.

For engine driven units, the pump must be posi-
tioned as level as possible to ensure sufficient lubri­cation and fuel supply to the engine.

PAGE B − 2 INSTALLATION

Keep suction and discharge lines as straight as
possible to minimize friction losses. Make mini­mum use of elbows and fittings, which substan­tially 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 ex­actly with the pump port. Never pull a pipe line into
place by tightening the flange bolts and/or cou­plings.

Lines near the pump must be independently sup­ported to avoid strain on the pump which could

PA SERIES PUMPS OM−04402

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

The pump is drilled and tapped for installing dis­charge pressure and vacuum suction gauges. It is
recommended that gauges be installed to monitor
pump performance. Seal the gauge threads with
pipe dope to ensure an airtight seal. Follow the
sealant manufacturer’s recommendations when
selecting and applying the pipe dope. The pipe
dope should be compatible with the liquid being
pumped.

SUCTION LINES

To avoid air pockets which could affect pump prim­ing, 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.

larger than the solids handling capability of the
pump.

Consult the pump Specification Data Sheet or the
factory for the solids handling capabilities of your
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 air­tight seal. Follow the sealant manufacturer’s rec­ommendations when selecting and applying the
pipe dope. The pipe dope should be compatible
with the liquid being pumped.

Suction Lines In Sumps

If a single suction line is installed in a sump, it
should be positioned away from the wall of the
sump at a distance equal to 1 1/2 times the diame­ter 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 suc­tion inlet because the inflow will carry air down into
the sump, and air entering the suction line will re­duce pump efficiency.

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 in­stalled with the flat part of the reducers uppermost
to avoid creating air pockets. Valves are not nor­mally used in suction lines, but if a valve is used,
install it with the stem horizontal to avoid air pock­ets.

Strainers

Be certain to use the strainer furnished with the
pump; any spherical solids which pass through the
strainer will also pass through the pump itself.

If a strainer not furnished with the pump 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

If it is necessary to position inflow close to the suc­tion 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 dis­tance 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 B−1

shows recommended minimum submergence vs.
velocity.

Although not recommended, the vacuum assisted
priming feature allows the pump to be operated

PAGE B − 3INSTALLATION

OM−04402 PA SERIES PUMPS

temporarily in a slurping" application with varying
water levels.

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 B−1. 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 si­phon breaker is used in the line. Otherwise, a si­phoning action causing damage to the pump
could result.

Valves

This pump is designed with a check valve in the
discharge line.

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 be installed in the discharge line
to protect the pump from excessive shock pres­sure and reverse rotation when it is stopped.

If the application involves a high discharge
head, gradually close the discharge
throttling valve before stopping the pump.

ALIGNMENT

Engine Driven Units

The alignment of the pump, air compressor and
engine is critical for trouble-free mechanical opera-

PAGE B − 4 INSTALLATION

PA SERIES PUMPS OM−04402

tion. Refer to the Maintenance and Repair Manual
for detailed alignment information.

Basic and Motor Driven Units

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 opera­tion.

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. Misalign­ment 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.

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 de­grees. The coupling is in alignment when the hub
ends are the same distance apart at all points (see
Figure B−2).

Figure B−2. Alignment of V-Belt Driven Pumps

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 B−3).

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 direc­tion. 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.

Figure B−3. Alignment of V-Belt Driven Pumps

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
straightedge to measure the amount of misalign­ment.

PAGE B − 5INSTALLATION

OM−04402 PA SERIES PUMPS

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 pul­leys are properly aligned (see Figure B−4). In drive
systems using two or more belts, make certain that
the belts are a matched set; unmatched sets will
cause accelerated belt wear.

MISALIGNED:

SHAFTS

NOT PARALLEL

MISALIGNED:

SHAFTS

NOT IN LINE

ALIGNED: SHAFTS

PARALLEL AND

SHEAVES IN LINE

Figure B−4. Alignment of V-Belt Driven Pumps

Tighten the belts in accordance with the belt manu­facturer’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 ra­tio; overspeeding the pump may damage both
pump and power source.

Do not operate the pump without a
guard in place over the rotating parts.
Exposed rotating parts can catch cloth­ing, fingers, or tools, causing severe in­jury to personnel.

Refer to the information which follows for installa­tion details for the liquid level sensing system pro­vided with your pump.

Float Switch Installation

The Float Switch autostart system employs either a
single or double float switch, where a bulb raises or
lowers (floats) with the liquid level, thus activating
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 ob­structed or drawn into the suction line. If a flex­ible 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 bot­tom. Direct the suction line toward the flow,
and the float(s) away from the flow. If a stand­pipe is available, attach the float switch cable
to the standpipe in the sump at the approxi­mate desired liquid level.

b. In a single float system, the cable can be teth-

ered to the suction line or standpipe approxi­mately 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 approxi­mately 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-

AUTO-START

The standard pump is equipped with an auto-start

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.

control system which allows the pump to start and
stop as the liquid level in the wet well or sump rises
and falls.

d. Refer to Figure B−5 for additional float switch

data.

PAGE B − 6 INSTALLATION

PA SERIES PUMPS OM−04402

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 B−5. Float Switch Data

Submersible Transducer Installation

The Electronic Pressure Switch (EPS) autostart
system employs a submersible transducer level
sensor with 75 feet (22,9 m) of signal cable con­nected to the EPS.

The transducer sensor converts pressure to an
electrical signal proportional to liquid level. This
electrical 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)

c. Allow slack in the signal cable so that the sen-

sor weight does not pull on the connection.

d. The wet well or sump must be vented to atmo-

sphere.

e. The EPS is scaled in feet of water column. If

the measured medium is other than 1.0 spe­cific gravity, the reading on the EPS should be
divided by the specific gravity of the mea­sured medium to obtain the actual level.

4.0

(1.2)

When installing the transducer sensor, note the fol­lowing:

a. Handle the signal cable and transducer sen-

sor with care during installation. Carefully
lower the sensor into the wet well or sump; do
not drop it to the bottom. To avoid clogging,
suspend the sensor off the bottom.

b. Be sure to provide sufficient room in the wet

well or sump so that the sensor 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
sensor can then be attached to the hose
above the point where it bends along the bot­tom. See Figure B−6 for a typical installation.

f. Thoroughly clean the sensor after each use

to prevent clogging.

Do not disassemble the transducer sensor
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
warranty. Connect the signal cable only to
the EPS terminals for this purpose and to
no other power source.

PAGE B − 7INSTALLATION

OM−04402 PA SERIES PUMPS

SUCTION

DISCHARGE

LINE

LINE

SIGNAL CABLE

(ATTACH TO

SUCTION LINE)

SUCTION

SUBMERSIBLE

TRANSDUCER

(DOWNSTREAM

FROM SUCTION)

STRAINER

Figure B−6. Submersible Transducer AutoStart Pump Installation

Transducer Connections

The submersible transducer sensor cable is facto­ry-equipped with a female connector which mates
with a male connector on the back of the EPS con­trol. If removal or replacement of the female con-

FLOW

nector is required, reconnect the cable to the con­nector as shown in Figure B−7.

Once the connections are made, simply plug the
female connector into the male connector on the
back of the EPS, and refer to Section C for opera­tional procedures.

PAGE B − 8 INSTALLATION

PA SERIES PUMPS OM−04402

+ BATT

− BATT

SHIELD

−

MOTOR

RUN

+

+ TEMP

RELAY

TRANSDUCER

SHD −V +VSIG

SHIELD

BLACK

A

MALE

TRANSDUCER

CONNECTOR

FEMALE

TRANSDUCER

CONNECTOR

RED

WHITE

TRANSDUCER

RELAY

B

HORN

RELAY

CAUTION−

THIS COVER PLATE MUST

SENSOR

CABLE

BE INSTALLED FOR PROPER

CONTROL OPERATION

Figure B−7. Back Side of Transducer Showing Sensor Cable Connections

PAGE B − 9INSTALLATION

PA SERIES PUMPS

OM−04402

OPERATION − SECTION C

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 most
non-volatile, non-flammable liquids
containing specified entrained solids
and corrosives. Do not attempt to pump
volatile, corrosive, or flammable liquids
which may damage the pump or endan­ger personnel as a result of pump fail­ure.

Pump speed and operating condition
points must be within the continuous per­formance range shown on the Perfor­mance Curve in the separate Parts List
Manual.

OPERATION OF ELECTRIC MOTOR
DRIVEN UNITS

Component Function

The control box contains the following hand-oper­ated switches and controls:

D The control handle operates the control

box circuit breakers. In the OFF position, the
control handle opens the circuit breakers to
interrupt incoming power through the con­trol box and prevent pump operation. In the
ON position, it closes the circuit breakers to
permit pump operation. The circuit breakers
will open or trip" automatically in the event
of a short circuit overload current. When
tripped, move the control handle to OFF and
back to ON to reset the circuit breakers.

D The selector switch controls the mode of

operation. In the OFF position, it prevents all
operation of the pump. In the HAND posi­tion, it allows the pump to run continuously.
In the AUTO position, it allows the pump to
be controlled automatically by the float
switch liquid level control system.

D The reset pushbutton resets the motor over-

load after it has been TRIPPED by an over­load. The overload relay will trip automatical­ly if the current drawn by the motor exceeds
design specifications. Allow 10 seconds for
the relay to cool after tripping before press­ing the reset.

If replacing the heater pack, press the reset
button to set the relay.

Control Box Function

If the circuit breaker trips, do not reset it immedi-

The control box is provided to facilitate operation of
the pump. It contains controls for starting and stop­ping the pump, and the low voltage circuitry used
for operating the automatic liquid level system.

The control box provides overload pro­tection and power control. Do not con­nect the pump motor directly to the in­coming power lines.

OPERATION PAGE C − 1

ately. Wait at least ten minutes before resetting the
control handle back to the ON position. If the over­load unit continues to trip, operational problems ex­ist.

The pump motor will restart as soon as
the RESET pushbutton is pressed, un­less the selector switch is in the OFF po­sition. Turn the selector switch to OFF

NOTE

OM−04402 PA SERIES PUMPS

and move the control handle to OFF be­fore approaching the pump.

D The liquid level system operates in conjunc-

tion with the 3-position switch (HAND-OFF­AUTO) supplied as part of the system. After
the float(s) have been installed as de­scribed in INSTALLATION, Section B,
pump operation may be automatically con­trolled for filling or dewatering functions.

D The green run light indicates the pump is

running. The light will be energized when
the 3-position switch is in the HAND position
or when the pump is running with the switch
in the AUTO position.

Always terminate incoming power to the control
box before investigating control box circuitry prob­lems.

Always terminate power to the control
box before performing service func­tions.

To check electric motor rotation, remove 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 cooling 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.

Priming

The pump will begin to prime upon startup. The air
in the suction line will be discharged from the educ­tor discharge line. Complete priming is indicated
by a positive discharge pressure reading.

If full priming is not achieved, the discharge check
valve may be malfunctioning. If this occurs, shut
down the pump and consult the separate Mainte-

nance and Repair manual for further details.

OPERATION OF ENGINE DRIVEN
UNITS

Before Starting

Power through the control box may be terminated
by moving the control handle to the OFF position,
thereby opening the circuit breakers. This stops
the pump, but does not terminate incoming power
through the field wiring connected to the control
box.

Rotation

The correct direction of pump rotation is indicated
by an arrow on the pump body or accompanying
decals. If the pump is operated in the wrong direc­tion, the impeller could become loosened from the
shaft and seriously damage the pump.

The pump must operate in the direction in­dicated by the arrow on the pump, or ac­companying decals. Reverse rotation
could damage the pump and adversely af­fect performance.

Check the fuel level and oil levels in the engine, air
compressor, pump bearings and seal housing.

Make sure the pump is level. Lower the jack stands
and chock the wheels, if so equipped.

Make sure the pump is level. Lower jack
stands and chock the wheels, if so
equipped. Use caution when positioning
the skid-mounted unit to prevent damage
to the fuel tank.

Check to ensure that all guards are in place.

Do not operate the pump without guards
in place over the rotating parts. Ex­posed rotating parts can catch clothing,
fingers or tools, causing severe injury to
personnel.

OPERATIONPAGE C − 2

PA SERIES PUMPS

OM−04402

Close the pump drain.

Manual Starting

Consult the engine operation manual before at­tempting to start the unit.

Manual Starting (Deutz Powered Units)

On initial start-up, set the engine speed at the half­throttle 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.

Automatic Starting

If the pump is equipped with the auto­matic starting system, it is subject to au­tomatic restart. Keep hands and cloth­ing away from the unit to prevent injury
during automatic operation. Disconnect
the positive battery cable before per­forming any maintenance. Failure to do
so may result in serious personal injury.

Consult the engine operation manual before at­tempting to start the unit.

Automatic Starting (Deutz Powered Units)

If the unit is equipped with the autostart control sys­tem, install the float(s) as described in INSTALLA-
TION, Section B.

Pump speed and operating condition
points must be within the continuous per­formance range shown on the curve in the
separate Parts List Manual accompanying
the pump.

Manual Starting (John Deere Powered Units)

On initial start-up, set the engine speed at the half­throttle position. Turn the key switch on the control
box to the MANUAL" position, then press and hold
the ENTER" button until the engine starts.

After the engine starts and the unit is fully primed,
adjust the engine RPM until the desired flow rate is
achieved.

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.

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 illu­minate in conjunction with an audible alarm before
the unit starts. The unit can then be stopped manu­ally by pressing the OFF/SET" button.

Pump speed and operating condition
points must be within the continuous per­formance range shown on the curve in the
separate Parts List Manual accompanying
the pump.

OPERATION PAGE C − 3

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 sec­onds before the unit starts.

OM−04402 PA SERIES PUMPS

When the liquid level in the sump or wet well is suffi­ciently 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.

The control panel is equipped with high oil temper­ature, low oil pressure, V-belt and start failure (3 at­tempts) safety shutdowns. If any of these problems
occur, the red Double Lightning Bolt" light will illu­minate to indicate a system fault. When the prob­lem is corrected, press the OFF/SET" button to re­set 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 key­switch in the AUTO START" position by pressing
the white MAN" button. The Single Lightning
Bolt" light will illuminate in conjunction with an au­dible alarm before the unit starts.

before the unit starts. When the liquid is sufficiently
pumped down, the unit will automatically shut
down.

The unit can be stopped while in the AUTO" mode
by moving the key switch to the OFF" position.

NOTE

If the key switch is moved to the OFF" position
while in the AUTO" mode, the engine will stop.
However, the auto-start process will continue as
soon as the key switch is moved back to the AUTO"
position.

The control panel is equipped with high oil temper­ature, low oil pressure, engine overspeed and en­gine overcrank safety shutdowns. If any of these
problems occur, the engine will not start. When the
problem is corrected, turn the key switch to the
OFF" position to reset the control.

Priming

The pump will begin to prime upon startup. The air
in the suction line will be discharged from the educ­tor discharge line. Complete priming is indicated
by a positive discharge pressure reading.

If full priming is not achieved, the discharge check
valve may be malfunctioning. If this occurs, shut
down the pump and consult the separate Mainte-
nance and Repair manual for further details.

Stop the unit manually by pressing the OFF/SET"
button.

Automatic Starting (John Deere Powered Units
With Float System)

If the unit is equipped with the autostart control sys­tem, install the float(s) as described in INSTALLA-
TION, Section B.

Follow the procedures outlined for manual starting
and adjust the throttle to the desired flow rate. Turn
the key switch to OFF", then move it to the AUTO"
position.

The pump will start automatically when the liquid
level in the sump or wet well increases and the
float(s) rise to the on" position. An alarm will sound
and the control box will begin a countdown display

Routine Operation (All Engine Driven
Models)

Do not operate an internal combustion
engine in an explosive atmosphere.
When operating an internal combustion
engine in an enclosed area, make sure
exhaust fumes are piped to the outside.
These fumes contain carbon monoxide,
a deadly gas that is colorless, tasteless
and odorless.

Adjust the engine speed to achieve the desired
output. Do not exceed the factory set engine speed
and system operating pressure. Do not operate

OPERATIONPAGE C − 4

PA SERIES PUMPS

OM−04402

below the recommended operating speed (if appli­cable).

Never tamper with the governor to gain
more power. The governor establishes
safe operating limits that should not be
exceeded. Refer to the Performance
Curve in the separate Parts List Manual
for the maximum continuous operating
speed for this pump.

Operation In Extreme Heat
(Engine Driven Auto-Start Units)

OPERATIONAL CHECKS
(All Models)

Leakage

Once the pump is fully primed, no leakage should
be visible at pump mating surfaces, or at pump
connections or fittings. Keep all line connections
and fittings tight to maintain maximum pump effi­ciency.

Pump Vacuum Check

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.

The safety shutdown system will automatically
stop the unit if engine operating temperature ex­ceeds design limits. If engine over-temperature
shutdown occurs, allow the unit to cool before re­starting.

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 being operated in the automatic mode,
adjust the float(s) to allow shorter run and longer
cooling periods, if possible.

This pump is equipped with automatic
liquid level controls, and is subject to
automatic restart. Keep hands and
clothing away from the unit to prevent
injury during automatic operation. Dis­connect the battery before performing
any maintenance. Failure to do so may
result in serious personal injury.

Eductor Discharge Line

Check the eductor discharge line for liquid bypass.
If bypass occurrs, shut down the pump. Refer to
the Maintenance and Repair Manual, disassemble
and clean the float and valve assembly inside the
priming chamber.

Liquid Temperature And Overheating

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 rup­ture or explode. If overheating occurs, stop the
pump immediately and allow it to completely cool
before servicing it. Approach any over-heated

pump cautiously.

Do not remove plates, covers, gauges,
pipe plugs, or fittings from an over­heated pump. Vapor pressure within the
pump can cause parts being disen­gaged to be ejected with great force. Al­low the pump to completely cool before
servicing.

OPERATION PAGE C − 5

OM−04402 PA SERIES PUMPS

Strainer Check

Check the strainer regularly, and clean it as neces­sary. The strainer should also be checked if pump
flow rate begins to drop. Monitor and record the
vacuum suction gauge 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 neces­sary, liquid pressure must be limited to 50% of the
maximum permissible operating pressure shown
on the pump performance curve.

STOPPING (Electric Motor Driven
Units)

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.

After stopping the pump, lock out incomming pow­er to ensure that the pump will remain inoperative.

STOPPING (Auto-Start Engine Driven
Units)

Manual Stopping (Deutz Powered Units)

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 inopera­tive.

Manual Stopping (John Deere Powered Units)

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.

STOPPING (Non-Auto-Start Engine
Driven Units)

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.

Reduce the throttle speed slowly and allow the en­gine to idle briefly before stopping.

If the application involves a high discharge
head, gradually close the discharge
throttling valve before stopping the pump.

After stopping the pump, switch off the engine igni­tion and remove the key to ensure that the pump
will remain inoperative.

In the manual mode, reduce the throttle speed
slowly, and allow the engine to idle briefly before
switching the engine key 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 inopera­tive.

Automatic Stopping

In the automatic mode, the pump will stop when
the liquid in the wet well or sump lowers and acti­vates the Off" float switch(s). The pump will restart
automatically when the liquid rises and activates
the On" float switch(s).

OPERATIONPAGE C − 6

PA SERIES PUMPS

OM−04402

Safety Shutdown System

The unit is equipped with a safety system to auto­matically shut down the engine under certain con­ditions. The engine will automatically shut down:

1. If the engine exceeds its safe operating tem­perature.

2. If the engine oil pressure drops below design
limits.

3. If the engine fails to start within a pre-set peri­od of time.

4. If the engine speed exceeds the safe operat­ing range.

5. If the engine fan belt breaks (Deutz powered
units).

Lights on the control panel will indicate which of the
safety features has caused the engine to shut
down.

PERIODIC CHECKS (All Models)

Seal Cavity And Bearing Lubrication

Both the seal and bearing cavities were fully lubri­cated at the factory. Check the lubrication levels
before startup, and regularly thereafter as indi­cated in the Maintenance and Repair Manual.
When lubrication is required, use only SAE No. 30
non-detergent oil.

Bearing Temperature Check

Bearings normally run at higher than ambient tem­peratures 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 inaccu­rate. Bearing temperatures can be measured ac­curately by placing a contact-type thermometer
against the housing. Record this temperature for
future reference.

Should any of the safety features cause the engine
to shut down, the cause must be determined and
corrected before putting the unit back into service.
The engine will not restart until the key switch has
been returned to the ‘OFF’ position for at least 10
seconds.

All safety shutdown features are pre-set at the fac­tory for optimum performance and safety; do not
attempt to adjust these settings.

Never disconnect any of the safety shut­down features; this will void the warran­ty and could result in serious damage to
the unit and/or injury to personnel. Safe­ty shutdown features are pre-set at the
factory; do not attempt to adjust any of
the settings. Determine the cause of
shutdown before putting the unit back
into service. Consult the factory for ad­ditional information.

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 cor­rect level (see LUBRICATION in the Maintenance
and Repair Manual). Bearing 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. Con­tinued operation should bring the temperatures
down to normal levels.

PERIODIC CHECKS (Engine Driven
Units)

Engine Fuel Filter

Consult the manual accompanying the engine,
and change the fuel filter periodically as indicated.
If operated under extremely dusty and/or humid
conditions, change the filter more frequently. Irreg­ular performance and loss of power usually indi­cate a dirty fuel filter.

OPERATION PAGE C − 7

OM−04402 PA SERIES PUMPS

Engine Oil

The engine was lubricated for test at the factory.
However, always check the lubrication level before
startup.

Consult the manual accompanying the engine,
and change the oil filter periodically as indicated. If
operated under extremely dusty conditions,
change the filter more frequently.

Air Compressor

The air compressor was lubricated for test at the
factory. However, always check the lubrication lev­el before startup.

Check the compressor V-belts regularly for exces­sive wear and proper tension. Refer to the manual
accompanying the air compressor for v-belt ad­justment procedures.

Consult the manual accompanying the air com­pressor and preform all duties and checks as indi­cated.

Drive Belt

Check the drive belt regularly for excessive wear
and proper tension. Refer to the separate Mainte-
nance and Repair manual for belt replacement
and adjustment procedures.

COLD WEATHER PRESERVATION
(All Models)

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 rotat­ing parts. If the pump will be idle for more than a
few hours, or if it has been pumping liquids con­taining 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 pre­venting 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 − 8

PA SERIES PUMPS

TROUBLESHOOTING − SECTION D

Review all SAFETY information in Section A.

Before attempting to open or service the
pump:

1. Familiarize yourself with this manual.

2. Shut down the engine and discon­nect the positive battery cable, or
lock out incoming power to the motor
and take precautions to ensure that
the pump will remain inoperative.

3. Allow the pump to completely cool if
overheated.

4. Check the temperature and make
sure pump is cool before opening
any covers, plates, or plugs.

5. Close the suction and discharge
valves.

6. Vent the pump slowly and cautiously.

7. Drain the pump.

OM−04402

TROUBLE POSSIBLE CAUSE PROBABLE REMEDY

PUMP FAILS TO
PRIME

PUMP STOPS OR
FAILS TO DELIVER
RATED FLOW OR
PRESSURE

Discharge check valve contami­nated, damaged, or unable to seat.

Air compressor head 180_ out. Consult factory.

Air leak in suction line. Correct leak.

Lining of suction hose collapsed. Replace suction hose.

Leaking or worn seal or pump gasket. Check pump vacuum. Replace

Suction lift or discharge head too high. Check piping installation and install

Air compressor damaged or belts bro­ken.

Strainer clogged. Check strainer and clean if neces-

Ecuctor clogged. Check and clean eductor.

Air leak in suction line. Correct leak.

Lining of suction hose collapsed. Replace suction hose.

Leaking or worn seal or pump gasket. Check pump vacuum. Replace

Clean or replace check valve.

leaking or worn seal or gasket.

bypass line if needed. See INSTAL-
LATION.

Check and repair/replace.

sary.

leaking or worn seal or gasket.

TROUBLESHOOTING PAGE D − 1

OM−04402

TROUBLE POSSIBLE CAUSE PROBABLE REMEDY

PA SERIES PUMPS

PUMP STOPS OR
FAILS TO DELIVER
RATED FLOW OR
PRESSURE (cont.)

PUMP REQUIRES
TOO MUCH
POWER

Strainer clogged.

Discharge check valve clogged.

Suction intake not submerged at
proper level or sump too small.

Impeller or other wearing parts worn
or damaged.

Discharge head too high.

Suction lift too high.

Pump speed too slow. Check engine output; consult en-

Belt or flexible coupling broken. Check and replace as necessary.

Pump speed too high. Check engine output.

Extreme ambient temperature. Reduce pump output.

Discharge head too low.
Fuel filter clogged. Check & replace often in extreme

Check strainer and clean if neces­sary.

Check and clean check vavle.

Check installation and correct
submergence as needed.

Replace worn or damaged parts.
Check that impeller is properly
centered and rotates freely.

Free impeller of debris.Impeller clogged.

Install bypass line.

Measure lift w/vacuum gauge. Re­duce lift and/or friction losses in
suction line.

gine operation manual.

Adjust discharge valve.

operating conditions.

PUMP CLOGS
FREQUENTLY

EXCESSIVE NOISE

Dilute if possible.Liquid solution too thick.

Check and replace as required.Fuel contaminated.

Pump or jack shaft bearing(s) frozen. Disassemble, check and replace

bearing(s) as required..

Discharge flow too slow.

Suction check valve or foot valve
clogged or binding.

Liquid solution too thick.

Cavitation in pump. Reduce suction lift and/or friction

Pumping entrained air.

Impeller clogged or damaged.

Open discharge valve fully to in­crease flow rate, and run engine at
maximum governed speed.

Clean valve.

Dilute if possible.

losses in suction line. Record vac­uum and pressure gauge readings
and consult local representative or
factory.

Locate and eliminate source of air
bubble.

Secure mounting hardware.Pump or drive not securely mounted.

Clean out debris; replace damaged
parts.

TROUBLESHOOTINGPAGE D − 2

PA SERIES PUMPS

TROUBLE POSSIBLE CAUSE PROBABLE REMEDY

OM−04402

BEARINGS
RUN TOO HOT

Bearing temperature is high, but
within limits.

Low or incorrect lubricant.

Suction and discharge lines not prop­erly supported.

Excessive tension on drive belt.

Check bearing temperature regu­larly to monitor any increase.

Check for proper type and level of
lubricant.

Check piping installation for proper
support.

Align drive properly.Drive misaligned.

Check belt tension. Adjust as
required.

TROUBLESHOOTING PAGE D − 3

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