Gorman-Rupp Pumps 81-1-2E3-X1.5 User Manual

ABCDE

OM−00770−01

December 14, 1979

Rev. D 03-17-10

INSTALLATION, OPERATION,

AND MAINTENANCE MANUAL

WITH PARTS LIST

80 SERIES PUMP

MODEL

81 1/2E3−X1.5 3P

THE GORMAN-RUPP COMPANY  MANSFIELD, OHIO

www.grpumps.com

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

1979 The Gorman-Rupp Company

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:

TABLE OF CONTENTS

INTRODUCTION PAGE I − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SAFETY - SECTION A PAGE A − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

INSTALLATION − SECTION B PAGE B − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Pump Dimensions PAGE B − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

POSITIONING PUMP PAGE B − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Lifting PAGE B − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Mounting PAGE B − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

Materials PAGE B − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Line Configuration PAGE B − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Connections to Pump PAGE B − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Gauges PAGE B − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

Fittings PAGE B − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Strainers PAGE B − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Sealing PAGE B − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Suction Lines In Sumps PAGE B − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Suction Line Positioning PAGE B − 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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

Siphoning PAGE B − 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Valves PAGE B − 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Bypass Lines PAGE B − 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ELECTRICAL CONNECTIONS PAGE B − 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

OPERATION − SECTION C PAGE C − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PRIMING PAGE C − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

STARTING PAGE C − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Rotation PAGE C − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

OPERATION PAGE C − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Lines With a Bypass PAGE C − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Lines Without a Bypass PAGE C − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Leakage PAGE C − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Liquid Temperature And Overheating PAGE C − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Strainer Check PAGE C − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Pump Vacuum Check PAGE C − 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

STOPPING PAGE C − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Cold Weather Preservation PAGE C − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TROUBLESHOOTING − SECTION D PAGE D − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PREVENTIVE MAINTENANCE PAGE D − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PUMP MAINTENANCE AND REPAIR - SECTION E PAGE E − 1. . . . . . . . . . . . . . . . .

STANDARD PERFORMANCE CURVE PAGE E − 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

i

TABLE OF CONTENTS

(continued)

PARTS LIST:

Pump Model PAGE E − 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PUMP AND SEAL DISASSEMBLY AND REASSEMBLY PAGE E − 4. . . . . . . . . . . . . . . . . . . . . . . . .

Suction Flap Valve Removal and Disassembly PAGE E − 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Impeller Removal PAGE E − 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Seal Removal PAGE E − 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Seal Reassembly and Installation PAGE E − 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Impeller Installation PAGE E − 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Suction Flap Valve Reassembly and Installation PAGE E − 7. . . . . . . . . . . . . . . . . . . . . . . . . . .

Final Pump Assembly PAGE E − 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

LUBRICATION PAGE E − 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Seal Assembly PAGE E − 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ii

80 SERIES

OM−00770

INTRODUCTION

Thank You for purchasing a Gorman-Rupp pump.
Read this manual carefully to learn how to safely

install and operate your pump. Failure to do so
could result in personal injury or damage to the
pump.

This pump is an 80 Series, semi-open impeller, self­priming centrifugal model. It is close-coupled to a

1.5 H.P., three phase, explosion-proof electric mo­tor. The basic material of construction for wetted
parts is gray iron, with a bronze impeller and stain­less steel motor shaft. The pump is designed to
handle petroleum products or other industrial liq­uids that do not contain large entrained solids.

This manual will alert personnel to known proce­dures which require special attention, to those
which could damage equipment, and to those
which could be dangerous to personnel. However,
this manual cannot possibly anticipate and provide
detailed precautions for every situation that might
occur during maintenance of the unit. Therefore, it
is the responsibility of the owner/maintenance per­sonnel to ensure that only safe, established main-
tenance procedures are used, and that any proce­dures not addressed in this manual are performed
only after establishing that neither personal safety
nor pump integrity are compromised by such prac­tices.

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

Immediate hazards 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.

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.

For information or technical assistance on the mo­tor, contact the motor manufacturer’s local dealer
or representative.

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

The Gorman-Rupp Company

P.O. Box 1217

Mansfield, Ohio 44901−1217

Phone: (419) 755−1011

or:

Gorman-Rupp of Canada Limited

70 Burwell Road

St. Thomas, Ontario N5P 3R7

Phone: (519) 631−2870

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

PAGE I − 1INTRODUCTION

80 SERIES OM−00770

SAFETY − SECTION A

This information applies to 80 Series
electric motor driven pumps. Refer to
the manual accompanying the motor
before attempting to begin operation.

This manual will alert personnel to
known procedures which require spe­cial attention, to those which could
damage equipment, and to those which
could be dangerous to personnel. How­ever, this manual cannot possibly pro­vide detailed instructions and precau­tions for each specific application or for
every situation that might occur during
maintenance of the unit. Therefore, it is
the responsibility of the owner, installer
and/or maintenance personnel to en­sure that applications and/or mainte­nance procedures not addressed in this
manual are performed only after estab­lishing that neither personal safety nor
pump integrity are compromised by
such applications or procedures.

This pump is designed to handle petro­leum products or other industrial liq­uids that do not contain large entrained
solids. Do not attempt to pump liquids
which may damage the pump or endan­ger personnel as a result of pump fai­lure.

This pump is designed to handle petro­leum products or other industrial liq­uids that do not contain large entrained
solids. All controls must meet industry
standards and codes for use in an ex­plosive atmosphere. Do not attempt to
pump liquids for which the pump and/or
controls have not been approved, or
which may damage the pump or endan­ger personnel as a result of pump fail­ure.

Before attempting to open or service the
pump:

1. Familiarize yourself with this man­ual.

2. Disconnect the incoming power to
the motor and lock it out 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 cau­tiously.

7. Drain the pump.

Be certain proper safety practices are
followed 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 install and operate a non-explo­sion proof motor in an explosive atmo­sphere. Install, connect, and operate
the motor in accordance with the Na­tional Electric Code and all local codes.
If there is a conflict between the instruc­tions in the manual accompanying the

PAGE A − 1SAFETY

unit and the National Electric Code or
the applicable local code, the National
or local code shall take precedence.

Because this pump is designed to han­dle volatile and/or flammable liquids,
overheating may produce dangerous
fumes. Take precautions to ensure the
area surrounding the pump is ade­quately ventilated. Allow the pump to
cool and use extreme caution when
venting the pump, or when removing
covers, plates, plugs, or fittings.

80 SERIESOM−00770

Overheated pumps can cause severe
burns and injuries. 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 cau­tiously.

6. Refer to instructions in this manual
before restarting the pump.

After the pump has been positioned,
make certain that the pump and all pip­ing connections are tight, properly sup­ported and secure before operation.

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 before servicing.

Do not operate the pump against a
closed discharge valve for long periods
of time. If operated 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.

The electrical power used to operate
this pump is high enough to cause inju­ry or death. Obtain the services of a qu­alified electrician to troubleshoot, test
and/or service the electrical compo­nents of this pump.

Use lifting and moving equipment in
good repair and with adequate capacity
to prevent injuries to personnel or dam­age to equipment. Suction and dis­charge hoses and piping must be re­moved from the pump before lifting.

Pumps and related equipment must be in­stalled and operated according to all na­tional, local and industry standards.

PAGE A − 2 SAFETY

INSTALLATION − SECTION B

OM−0077080 SERIES

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

OUTLINE DRAWING

specific application. Since the pressure supplied
to the pump is critical to performance and safety,
be sure to limit the incoming pressure to 50% of
the maximum permissible operating pressure as
shown on the pump performance curve.

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

Pump Dimensions

See Figure 1 for the approximate physical dimen­sions of this pump.

Figure 1. Pump Models 81 1/2E3−X1.5 3P

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 and motor 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-

PAGE B − 1INSTALLATION