GORMAN-RUPP GHS Series Manuel utilisateur

OM-04707-04

December 10, 2020

GORMAN‐RUPP PUMPS

www.grpumps.com

2020 Gorman‐Rupp Pumps Printed in U.S.A.

INSTALLATION, OPERATION,

AND MAINTENANCE MANUAL

ROTARY GEAR PUMPS

MODELS

GHS SERIES FLEXIBLE SEAL

T SIZE

PUMPS

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 MODEL DESIGNATION PAGE B-1..................................................

PREINSTALLATION INSPECTION PAGE B-2................................................

STORAGE PAGE B-2....................................................................

Flushing PAGE B-2..................................................................

PUMP INSTALLATION PAGE B-3..........................................................

Maximum Operating Parameters PAGE B-3.............................................

Lifting PAGE B-3.....................................................................

Positioning The Pump PAGE B-3......................................................

Mounting PAGE B-3.................................................................

Piping PAGE B-3....................................................................

Gauges PAGE B-4...................................................................

Strainers PAGE B-4..................................................................

Sealing PAGE B-4...................................................................

Valves PAGE B-4....................................................................

Barrier Liquids for 65E Cartridge Triple Lipseal PAGE B-5.................................

Barrier Liquids for Dual Seals PAGE B-5................................................

ALIGNMENT PAGE B-5..................................................................

Coupled Drives PAGE B-5............................................................

V‐Belt Drives PAGE B-6...............................................................

V‐BELT TENSIONING PAGE B-6..........................................................

General Rules of Tensioning PAGE B-6.................................................

Tension Measurement PAGE B-6......................................................

ELECTRICAL CONNECTIONS PAGE B-9...................................................

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

PUMP OPERATION PAGE C-1............................................................

PRE‐OPERATION PAGE C-1..............................................................

Before Starting the Pump PAGE C-1...................................................

Checking Pump Rotation PAGE C-1...................................................

STARTING PAGE C-2....................................................................

OPERATION PAGE C-2..................................................................

Liquid Temperature PAGE C-2.........................................................

Overheating PAGE C-2...............................................................

Checking Gauges PAGE C-2..........................................................

Strainer Check PAGE C-2.............................................................

Leakage PAGE C-3..................................................................

PRESSURE RELIEF VALVE ADJUSTMENT PAGE C-3........................................

Cracking Pressure PAGE C-3.........................................................

Complete By‐Pass Pressure PAGE C-3.................................................

STOPPING PAGE C-3....................................................................

TROUBLESHOOTING - SECTION D PAGE D - 1...............................

PREVENTIVE MAINTENANCE PAGE D-4...............................................

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

TYPICAL GHS T PUMP MODEL ILLUSTRATION PAGE E-2...................................

TABLE OF CONTENTS

(continued)

PARTS KEY:

Typical GHS T Pump Model PAGE E-3.................................................

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

PUMP DISASSEMBLY PAGE E-5..........................................................

Preparing for Disassembly PAGE E-5..................................................

Pressure Relief Valve (10) PAGE E-5...................................................

Optional Head Jacket (T Size Pumps) PAGE E-5........................................

Rotor Adjusting Sleeve (07) PAGE E-5.................................................

Coverplate Kit (11) PAGE E-6.........................................................

Head/Idler Kit (01 and 02) PAGE E-6...................................................

Seal Removal (05) PAGE E-7..........................................................

Rotor/Shaft Removal (03) PAGE E-7...................................................

Backhead Kit Removal (06) PAGE E-7..................................................

PUMP REASSEMBLY PAGE E-7..........................................................

Cleaning and Inspection PAGE E-7....................................................

Bushing Preparation PAGE E-8........................................................

Backhead Kit (06) PAGE E-8..........................................................

Rotor/Shaft Assembly (03) PAGE E-8..................................................

Seal Installation (05) PAGE E-8........................................................

Head/Idler Kit (01 and 02) PAGE E-8...................................................

Coverplate Kit (11) PAGE E-9.........................................................

Rotor Adjusting Sleeve (07) PAGE E-9.................................................

SETTING END CLEARANCE PAGE E-9....................................................

RELIEF VALVE DISASSEMBLY (T Hydraulic Size Only) PAGE E-10............................

RELIEF VALVE REASSEMBLY (T Hydraulic Size Only) PAGE E-11.............................

RELIEF VALVE (10) INSTALLATION PAGE E-11.............................................

SEAL APPENDIX - SECTION F PAGE F-1.....................................

Standard Friction Drive (And Optional 60A, 60B And 61J) Mechanical Seals PAGE F-1...........

Optional 60D Positive Drive Mechanical Seal PAGE F-4.......................................

Standard Packing Seal PAGE F-7..........................................................

O‐RING APPENDIX - SECTION G PAGE G-1..................................

O‐Ring Information Chart PAGE G-1.......................................................

GHS SERIES OM-04707

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.

Because pump installations are seldom identical,

this manual cannot possibly provide detailed in

structions and precautions for every aspect of

each specific application. Therefore, it is the re

sponsibility of the owner/installer of the pump to

ensure that applications not addressed in this

manual are performed only after establishing that

neither operator safety nor pump integrity are com

promised by the installation. Pumps and related

equipment must be installed and operated ac

cording to all national, local and industry stan

dards.

If there are any questions regarding the pump 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:

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

For information or technical assistance on the

power source, contact the power source manufac

turer's local dealer or representative.

HAZARD AND INSTRUCTION

DEFINITIONS

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.

OM-04707GHS SERIES

SAFETY PAGE A-1

SAFETY - SECTION A

This information is specific to Gorman‐Rupp GHS

Series Rotary Gear Pumps. It applies throughout

this manual and any manual or literature ac

companying the pump.

For information on the power unit used to drive this

pump, consult the separate literature accompany

ing the power unit.

Pumps and related equipment must be in

stalled and operated according to all na

tional, local and industry standards.

This manual will alert personnel to

known procedures which require spe

cial attention, to those which could

damage equipment, and to those which

could be dangerous to personnel. How

ever, this manual cannot possibly pro

vide detailed instructions and precau

tions 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 en

sure that applications and/or mainte

nance procedures not addressed in this

manual are performed only after estab

lishing that neither personal safety nor

pump integrity are compromised by

such applications or procedures.

Before attempting to install, operate, or

service this pump, familiarize yourself

with this manual, and with all other liter

ature shipped with the pump. Unfamil

iarity with all aspects of pump operation

covered in this manual could lead to de

struction of equipment, injury, or death.

Depending on design and components,

this pump will handle a wide range of

light, medium, and heavy viscosity liq

uids at a variety of temperatures. Do not

apply at higher temperatures than the

seal will handle. Do not attempt to pump

liquids which may damage the pump or

endanger personnel as a result of pump

failure; consult the factory for chemical

compatibility.

Death or serious personal injury and

damage to the pump or components

can occur if proper lifting procedures

are not observed. Make certain that

hoists, chains, slings or cables are in

good working condition and of suffi

cient capacity and that they are posi

tioned so that loads will be balanced

and the pump or components will not be

damaged when lifting. Suction and dis

charge hoses and piping must be re

moved from the pump before lifting. Lift

the pump or component only as high as

necessary and keep personnel away

from suspended objects.

After the pump has been installed, make

certain that the pump and all piping or

hose connections are secure before op

eration. Loose connections can result in

damage to the equipment and serious

injury to personnel.

GHS SERIESOM-04707

PAGE A-2 SAFETY

Never operate the pump without a pres

sure relief valve installed on the pump

or in the discharge piping. Make certain

that pump‐mounted pressure relief

valves are installed with their adjusting

ends toward the suction port. If bi‐rota

tional operation is required, a pressure

relief device must be provided for both

directions of flow. Operation without a

pressure relief valve or with an improp

erly installed relief valve could cause

the pump to explode, resulting in seri

ous injury or death to personnel.

Do not operate this pump without

guards in place over the rotating parts.

Exposed rotating parts can catch cloth

ing, fingers or tools, causing severe in

jury to personnel.

Before attempting to open or service the

pump:

1. Familiarize yourself with this man

ual.

2. Lock out incoming power to the

drive unit to ensure that the pump

will remain inoperative.

3. Allow the pump to completely cool

if overheated.

4. Close the discharge and suction

valve (if used).

An overheated pump can cause severe

burns and injury. If overheating occurs:

1. Stop the pump immediately.

2. Allow the pump to completely cool.

3. Refer to the instructions in this

manual before restarting the

pump.

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 completely cool before

servicing.

This pump may be used to handle liq

uids which may cause serious illness or

injury through direct exposure or

emitted fumes. Wear protective cloth

ing, such as rubber gloves, face mask

and rubber apron, as necessary, before

disconnecting or servicing the pump or

piping.

GHS SERIES OM-04707

PAGE B-1

INSTALLATION

INSTALLATION - SECTION B

Review all SAFETY information in Section A.

Pumps and related equipment must be in

stalled and operated according to all na

tional, local and industry standards.

Since pump installations are seldom identical, this

section is intended only to summarize general rec

ommendations and practices required to inspect,

position, and arrange the pump and piping. If there

are any questions concerning your specific instal

lation, contact your Gorman‐Rupp distributor or

the Gorman‐Rupp Company.

Most of the information applies to a flooded suction

installation where liquid is supplied under pres

sure.

If the pump is positioned above the liquid in a static

lift installation, information such as mounting, pip

ing configuration and priming must be tailored to

specific conditions.

These pumps are not recommended for

use with water. Some models may be used

with water when fitted with specific options;

consult the factory.

PUMP MODEL DESIGNATION

Following is a description of the model numbering

system for Gorman‐Rupp rotary gear pumps.

Rotary gear pump model numbers include design

style, port size, hydraulic size and construction

code.

Typical Pump Model

GHS 1 1/2 GF 32

Design

Style

Port

Size

Hydraulic

Size

Construction

Code

Design Style: Gorman‐Rupp rotary gear pumps

are available in five basic designs:

GMC - Medium Duty - Compact

GMS - Medium Duty

GHC - Heavy Duty - Compact

GHS - Heavy Duty

GHA - Abrasive Duty

Port Size: Gorman‐Rupp rotary gear pumps are

available in port sizes from 1 to 6 inches, depend

ing on the design style. Consult your Gorman‐

Rupp distributor or the factory for additional sizes.

Hydraulic Size: The first letter in the hydraulic size

is a rotor diameter code. The second letter indi

cates tooth length.

Construction Code: Construction Codes for Gor

man‐Rupp rotary gear pumps are as follows:

Code Description

3 Iron w/Mechanical Seal(s)

4 Iron w/Packing or Lip Seal(s)

9 316 SST w/Mechanical Seal(s)

10 316 SST w/Packing or Lip Seal(s)

31 Ductile Iron w/Mechanical Seal(s)

32 Steel w/Mechanical Seal(s)

37 Ductile Iron w/Packing or Lip Seal(s)

38 Steel w/Packing or Lip Seal(s)

Theoretical Displacement: Table B‐1 indicates

theoretical displacement values for each hydraulic

size.

NOTE

Actual capacities and recommended shaft speeds

vary according to application. Consult your Gor

man‐Rupp distributor or the factory for additional

information.

GHS SERIES

OM-04707

PAGE B-2 INSTALLATION

Table B‐1. Theoretical Displacement

Hydraulic

Size

Theoretical Displacement

Per Revolution

Gallons Centimeters3

DC 0.00568 21.486

DE 0.00704 26.646

GC 0.00967 36.619

GF 0.01405 53.186

GH 0.01915 72.479

GJ 0.02317 87.700

JG 0.03579 135.49

JJ 0.05159 195.28

JL 0.07078 267.94

JP 0.10078 381.48

NK 0.10665 403.71

NM 0.14173 536.51

NP 0.17681 669.31

RM 0.24030 909.65

RP 0.29979 1134.8

RR 0.35927 1360.0

RS 0.41876 1585.1

SR 0.65752 2489.0

SU 1.10240 4173.2

TU 1.91280 7240.7

PREINSTALLATION INSPECTION

The pump assembly was inspected and tested be

fore shipment from the factory. Before installation,

check for damage which may have occurred dur

ing shipment. Check as follows:

a. Inspect the pump assembly for cracks, dents,

damaged threads, and other obvious dam

age.

b. Check for loose attaching hardware. Since

gaskets tend to shrink after drying, check for

loose hardware at the mating surfaces.

c. Carefully read all tags, decals, and markings

on the pump assembly, and perform all duties

indicated.

STORAGE

Due to the extreme close machining toler

ances within rotary gear pumps, proper

storage before installation is essential to

prevent damage to the pump.

If the pump will not be immediately installed, follow

these procedures or damage to the pump will oc

cur.

a. Do not flush the pump. Ensure that the port

plugs shipped with the pump remain in place

until piping is installed to help prevent dust or

other foreign objects from entering the pump.

b. Pumps that will not be installed for an ex

tended period should be stored indoors if

possible. The factory‐installed port plugs will

not ensure protection from excessive humid

ity, splash water or rain. In very humid or wet

conditions, install air‐tight plugs in the ports

and fill the pump completely with a lubricating

preservative liquid that is compatible with the

liquid to be pumped.

c. Pumps stored outdoors must be fully pre

served as described above, completely cov

ered with plastic or other water‐tight material,

and the covering anchored to ensure that it

will not be blown off.

Flushing

Clean piping is essential because of close‐

tolerance moving parts in this pump. Flush

all dirt, grit, weld beads or scale from the

suction piping before installing the pump.

Damage to the pump because of debris in

the suction line is not covered by the pump

warranty.

Before shipment, the pump may have been tested

using a petroleum‐based preservative. If flushing is

required, do not do so until just before installation;

the test oil protects close‐tolerance pump parts

from corrosion.

NOTE

Simple flushing of the wetted end of the pump to re

move test liquid may not be sufficient to thoroughly

clean the seal cavity. Pump design and the particu

lar seal assembly being used may require draining

the seal area by removing the backhead plug and

then flushing through a separate line.

GHS SERIES OM-04707

PAGE B-3

INSTALLATION

Most cleaning solvents are toxic and

flammable. Use them only in a well ven

tilated area free from flame, sparks, and

excessive heat. Read and follow all pre

cautions printed on solvent containers.

To flush the pump, use an approved solvent com

patible with the liquid being pumped. Make cer

tain that the solvent will not attack pump com

ponents, particularly seals and gaskets.

PUMP INSTALLATION

Pump dimensions are shown in the separate

Pump Specification Bulletin.

Never operate the pump without a pres

sure relief valve installed on the pump

or in the discharge piping. Make certain

that pump‐mounted pressure relief

valves are installed with their adjusting

ends toward the suction port. If bi‐rota

tional operation is required, a pressure

relief device must be provided for both

directions of flow. Operation without a

pressure relief valve or with an improp

erly installed relief valve could cause

the pump to explode, resulting in seri

ous injury or death to personnel.

Maximum Operating Parameters

Rotary gear pumps are capable of different operat

ing parameters depending on such things a specif

ic materials of construction, pump options, liquid

being pumped, etc. In no case should the applica

tion exceed the parameters shown below. Consult

the factory for specific ratings.

*Maximum Operating Parameters

Pressure 200 psi (14 Bar)

Speed 520 rpm

Temperature 500F (260C)

* Consult Factory for Specific Ratings

Lifting

Death or serious personal injury and

damage to the pump or components

can occur if proper lifting procedures

are not observed. Make certain that

hoists, chains, slings or cables are in

good working condition and of suffi

cient capacity and that they are posi

tioned so that loads will be balanced

and the pump or components will not be

damaged when lifting. Suction and dis

charge hoses and piping must be re

moved from the pump before lifting. Lift

the pump or component only as high as

necessary and keep personnel away

from suspended objects.

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.

Positioning The Pump

Locate the pump as close as possible to the liquid

being pumped. Locating the pump below the liq

uid source will help self‐priming and reduce the

possibility of cavitation.

Mounting

The pump may be shipped alone, mounted on a

base, or with pump and motor mounted on a base.

Install the pump and motor on a base before

mounting the base on a foundation.

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