GORMAN-RUPP PUMPS 80 Series Guida all'applicazione

OM-02165-01

April 9, 1984

Rev. D 08‐30‐13

THE GORMAN‐RUPP COMPANY MANSFIELD, OHIO

www.grpumps.com

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

1984 The Gorman‐Rupp Company

INSTALLATION, OPERATION,

AND MAINTENANCE MANUAL

WITH PARTS LIST

80 SERIES PUMP

MODEL

81 1/2P47A-E2 3P

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 - 5........................................................

Siphoning PAGE B - 5.............................................................

Valves PAGE B - 5................................................................

Bypass Lines PAGE B - 5..........................................................

ELECTRICAL CONNECTIONS PAGE B - 5...............................................

OPERATION - SECTION C PAGE C - 1......................................

PRIMING PAGE C - 1.................................................................

STARTING 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........................................

PARTS LIST:

Pump Model PAGE E - 3..........................................................

TABLE OF CONTENTS

(continued)

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

Pump Casing and Vane Plate Removal 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.....................................................

Vane Plate and Pump Casing Installation PAGE E - 7..................................

Final Pump Assembly PAGE E - 7..................................................

LUBRICATION PAGE E - 7.............................................................

Seal Assembly PAGE E - 7.........................................................

80 SERIES OM-02165

PAGE I - 1INTRODUCTION

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, self‐

priming centrifugal model without a suction check

valve. It is close‐coupled to a 2 H.P., three phase,

totally enclosed, fan‐cooled electric motor. The ba

sic material of construction for wetted parts is fiber

glass reinforced polyester (Valoxgrade 420).

The pump is designed for handling water and most

water‐soluable herbicides and pesticides, as well

as certain chemicals and waste solutions within

specified temperatures and concentrations. Con

sult the factory for information about your specific

application or for a copy of our chemical compati

bility guide. This pump is not recommended for

handling volatile or flammable liquids.

For information or technical assistance on the mo

tor, contact the motor manufacturer's local dealer

or representative.

This manual will alert personnel to known proce

dures which require special attention, to those

which could damage equipment, and to those

which could be dangerous to personnel. However,

this manual cannot possibly anticipate and provide

detailed precautions for every situation that might

occur during maintenance of the unit. Therefore, it

is the responsibility of the owner/maintenance per

sonnel to ensure that only safe, established main

tenance procedures are used, and that any proce

dures not addressed in this manual are performed

only after establishing that neither personal safety

nor pump integrity are compromised by such prac

tices.

If there are any questions regarding the pump or

its application which are not covered in this man

ual or in other literature accompanying this unit,

please contact your Gorman‐Rupp distributor, or:

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

The following are used to alert maintenance per

sonnel to procedures which require special atten

tion, to those which could damage equipment, and

to those which could be dangerous to personnel:

Immediate hazards which WILL result in

severe personal injury or death. These

instructions describe the procedure re

quired and the injury which will result

from failure to follow the procedure.

Hazards or unsafe practices which

COULD result in severe personal injury

or death. These instructions describe

the procedure required and the injury

which could result from failure to follow

the procedure.

Hazards or unsafe practices which COULD

result in minor personal injury or product

or property damage. These instructions

describe the requirements and the possi

ble damage which could result from failure

to follow the procedure.

NOTE

Instructions to aid in installation, operation, and

maintenance or which clarify a procedure.

80 SERIES OM-02165

PAGE A - 1SAFETY

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.

Because pump installations are seldom

identical, this manual cannot possibly

provide detailed instructions and pre

cautions for each specific application.

Therefore, it is the owner/installer's re

sponsibility to ensure that applications

not addressed in this manual are per

formed only after establishing that nei

ther operator safety nor pump integrity

are compromised by the installation.

Before attempting to open or service the

pump:

1. Familiarize yourself with this man

ual.

2. Disconnect the incoming power to

the motor and lock it out to ensure

that the pump will remain inopera

tive.

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 water

and most water‐soluable herbicides

and pesticides, as well as certain chem

icals and waste solutions within speci

fied temperatures and concentrations.

Do not attempt to pump volatile or flam

mable materials which may damage the

pump or endanger personnel as a result

of pump failure.

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.

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.

This pump is designed to handle materi

als which could cause illness or injury

through direct exposure or emitted

fumes. Wear protective clothing, such

as rubber gloves, face mask and rubber

apron, as necessary, before discon

necting or servicing the pump or piping.

Do not remove plates, covers, gauges,

pipe plugs, or fittings from an over

heated pump. Vapor pressure within the

pump can cause parts being disen

gaged to be ejected with great force. Al

low the pump to cool before servicing.

80 SERIESOM-02165

PAGE A - 2 SAFETY

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.

The electrical power used to operate

this pump is high enough to cause inju

ry or death. Obtain the services of a qu

alified electrician to troubleshoot, test

and/or service the electrical compo

nents of this pump.

Never run this pump backwards. Be cer

tain that rotation is correct before fully

engaging the pump.

Pumps and related equipment must be in

stalled and operated according to all na

tional, local and industry standards.

80 SERIES OM-02165

PAGE B - 1INSTALLATION

INSTALLATION - SECTION B

Review all SAFETY information in Section A.

Since pump installations are seldom identical, this

section offers only general recommendations and

practices required to inspect, position, and ar

range the pump and piping.

Most of the information pertains to a standard

static lift application where the pump is 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 (see Sec

tion E, Page 1).

For further assistance, contact your Gorman‐Rupp

distributor or the Gorman‐Rupp Company.

Pump Dimensions

See Figure 1 for the approximate physical dimen

sions of this pump.

OUTLINE DRAWING

Figure 1. Pump Model 81 1/2P47A-E2 3P

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 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

OM-02165 80 SERIES

PAGE B - 2 INSTALLATION

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 that the pump shaft rotates in

the required direction.

The impeller of the pump is threaded onto

the pump shaft. Reverse rotation of the

shaft can cause the impeller to unscrew

and break the suction head or casing. Dis

connect the power before checking for

proper direction of rotation.

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 motor have been stored for

more than 12 months, some of the compo

nents or lubricants may have exceeded their

maximum shelf life. These must be inspected

or replaced to ensure maximum pump serv

ice.

The electrical power used to operate

this pump is high enough to cause inju

ry or death. Obtain the services of a qu

alified electrician to troubleshoot, test

and/or service the electrical compo

nents of this pump.

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

Pump unit weights will vary depending on the

mounting and drive provided. Check the shipping

tag on the unit packaging for the actual weight, and

use lifting equipment with appropriate capacity.

Drain the pump and remove all customer‐installed

equipment such as suction and discharge hoses

or piping before attempting to lift existing, installed

units.

The pump assembly can be seriously

damaged if the chains or cables used to lift

and move the unit are improperly wrapped

around the pump.

The pump casing, flanges and seal plate

are made of fiberglass‐reinforced polyes

ter, which can crack under impact or

shock. Take every precaution against

dropping the pump or striking pump com

ponents.

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.

SUCTION AND DISCHARGE PIPING

Pump performance is adversely effected by in

creased suction lift, discharge elevation, and fric

tion losses. See the performance curve on Page

E‐1 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

80 SERIES OM-02165

PAGE B - 3INSTALLATION

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.

Flexible connectors are required on suction and

discharge connections in order to prevent piping

loads.

The suction and discharge lines must be

supported and connected to the pump

with flexible connectors in order to prevent

piping loads. The pump warranty will be

voided if flexible connectors are not

used.

Connections to Pump

Before tightening a connecting flange, align it ex

actly with the pump port. Never pull a pipe line into

place by tightening the flange bolts and/or cou

plings.

Lines near the pump must be independently sup

ported to avoid strain on the pump which could

cause excessive vibration, decreased bearing life,

and increased shaft and seal wear. If hose‐type

lines are used, they should have adequate support

to secure them when filled with liquid and under

pressure.

Gauges

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.

The suction line should not exceed 20 feet (6 me

ters) in length.

Fittings

The use of plastic fittings to connect suction and

discharge lines to the pump is recommended. Use

a good grade of pipe sealant on the threads of the

fittings. Draw the fittings up hand tight, then give

them one full turn with a wrench.

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.

Strainers

If a strainer is furnished with the pump, be certain

to use it; any spherical solids which pass through a

strainer furnished with the pump will also pass

through the pump itself.

If a strainer is not furnished with the pump, but is

installed by the pump user, make certain that the

total area of the openings in the strainer is at least

three or four times the cross section of the suction

line, and that the openings will not permit passage

of solids larger than the solids handling capability

of the pump.

This pump is designed to handle up to 9/16 inch

(14,3 mm) diameter spherical solids.

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