Gorman-Rupp Pumps 13A2-B 710664 and up Installation, Operation, And Maintenance Manual With Parts List

OM‐00621‐10

March 26, 1980

Rev. F 05‐29‐2019

INSTALLATION, OPERATION,

AND MAINTENANCE MANUAL

WITH PARTS LIST

10 SERIES PUMP

MODEL

13A2‐B

GORMAN‐RUPP PUMPS

www.grpumps.com

e

1980 Gorman‐Rupp Pumps Printed in U.S.A.

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PREINSTALLATION INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

POSITIONING PUMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Lifting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Clearance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SUCTION AND DISCHARGE PIPING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Line Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Connections to Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Gauges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SUCTION LINES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Strainers

Sealing

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Suction Lines In Sumps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Suction Line Positioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DISCHARGE LINES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Siphoning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Bypass Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

AUTOMATIC AIR RELEASE VALVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Air Release Valve Installation

ALIGNMENT

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Coupled Drives

V‐Belt Drives

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

V‐BELT TENSIONING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

General Rules of Tensioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Tension Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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OPERATION - SECTION C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PAGE C - 1

PRIMING

STARTING

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Rotation

OPERATION

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Lines With a Bypass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Lines Without a Bypass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Leakage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Liquid Temperature And Overheating

Strainer Check

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Pump Vacuum Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

STOPPING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

BEARING TEMPERATURE CHECK

Cold Weather Preservation

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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TABLE OF CONTENTS

(continued)

TROUBLESHOOTING - SECTION D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PAGE D - 1

PREVENTIVE MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PAGE D - 3

PUMP MAINTENANCE AND REPAIR ‐ SECTION E . . . . . . . . . . . . . . . . .

PAGE E - 1

STANDARD PERFORMANCE CURVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PARTS LIST:

Pump Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PUMP AND SEAL DISASSEMBLY AND REASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . .

Suction Check Valve Removal and Disassembly

Back Cover Removal

. . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Pump Casing Removal

Impeller Removal

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Seal Removal and Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Shaft and Bearing Removal and Disassembly

Shaft and Bearing Reassembly and Installation

. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Seal Reassembly and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Impeller Installation And Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Pump Casing Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Back Cover Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Suction Check Valve Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Final Pump Assembly

LUBRICATION

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Seal Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Power Source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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PAGE E - 12 ii

10 SERIES OM-00621

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 a 10 Series, semi‐open impeller, self‐ priming centrifugal model with a suction check valve. The pump is designed for handling most non‐volatile, non‐flammable liquids containing specified entrained solids. The basic material of construction for wetted parts is gray iron.

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.

For information or technical assistance on the pow er source, contact the power source manufactur er's local dealer or representative.

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.

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

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.

INTRODUCTION PAGE I - 1

10 SERIES OM-00621

SAFETY ‐ SECTION A

This information applies to 10 Series ba sic pumps. Gorman‐Rupp has no con trol over or particular knowledge of the power source which will be used. Refer to the manual accompanying the power source before attempting to begin oper ation.

5. Close the suction and discharge valves.

6. Vent the pump slowly and cau tiously.

7. Drain the pump.

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 antici pate and provide detailed instructions and 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 estab lishing that neither personal safety nor pump integrity are compromised by such practices.

Before attempting to open or service the pump:

1. Familiarize yourself with this man ual.

2. Lock out or disconnect the power source 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.

This pump is designed to handle most non‐volatile, non‐flammable liquids containing specified entrained solids.

Do not attempt to pump liquids for which the pump has not been approved, or which may damage the pump or en danger personnel as a result of pump failure.

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 tight, properly supported and secure before operation.

SAFETY PAGE A - 1

OM-00621 10 SERIES

Do not operate the pump without the shields and/or guards in place over the drive shaft, belts, and/or couplings, or other rotating parts. Exposed rotating parts can catch clothing, fingers, or tools, causing severe injury to person nel.

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.

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.

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.

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.


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

PAGE A - 2 SAFETY

10 SERIES OM-00621

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. This pump is equipped with a

Gorman‐Rupp double grease lubricated seal, therefore the maximum incoming pressure must be limited to 10 p.s.i.

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

INSTALLATION

Figure 1. Pump Model 13A2-B

PAGE B - 1

OM-00621 10 SERIES

PREINSTALLATION INSPECTION

The pump assembly was inspected and tested be fore shipment from the factory. Before installation, inspect the pump for damage which may have oc curred during shipment. Check as follows: a. Inspect the pump for cracks, dents, damaged threads, and other obvious damage.

b. Check for and tighten loose attaching hard ware. Since gaskets tend to shrink after dry ing, check for loose hardware at mating sur faces.

c. Carefully read all tags, decals, and markings on the pump assembly, and perform all duties indicated.

Only operate this pump in the direction in dicated by the arrow on the pump body and on the accompanying decal. Other wise, the impeller could become loosened from the shaft and seriously damage the pump. Refer to

Section C.

Rotation in OPERATION 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 has been stored for more than 12 months, some of the components or lubri cants may have exceeded their maximum shelf life. These must be inspected or re placed to ensure maximum pump service.

If the maximum shelf life has been exceeded, or if anything appears to be abnormal, contact your

Gorman‐Rupp distributor or the factory to deter mine the repair or updating policy. Do not put the pump into service until appropriate action has been taken.

PAGE B - 2

,

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.

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.

Clearance

It is recommended that 18 inches (457 mm) of clearance be provided in front of the back cover to permit removal of the cover and easy access to the pump interior. A minimum clearance of 6 inches

(152,4 mm) must be maintained to permit removal of the cover.

INSTALLATION

10 SERIES OM-00621

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 compatible with the liquid being pumped. If hose is used in suction lines, it must be the rigid‐wall, rein forced type to prevent collapse under suction. Us ing piping couplings in suction lines is not recom mended.

Line Configuration

Keep suction and discharge lines as straight as possible to minimize friction losses. Make mini mum use of elbows and fittings, which substan tially increase friction loss. If elbows are necessary, use the long‐radius type to minimize friction loss.

Connections to Pump

Before tightening a connecting flange, align it ex actly with the pump port. Never pull a pipe line into place by tightening the flange bolts and/or cou plings.

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

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.

Fittings

Suction lines should be the same size as the pump inlet. If reducers are used in suction lines, they should be the eccentric type, and should be in stalled with the flat part of the reducers uppermost to avoid creating air pockets. Valves are not nor mally used in suction lines, but if a valve is used, install it with the stem horizontal to avoid air pock ets.

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 1-1/2 inch

(38,1 mm) diameter spherical solids.

Sealing

Since even a slight leak will affect priming, head, and capacity, especially when operating with a high suction lift, all connections in the suction line should be sealed with pipe dope to ensure an air tight seal. Follow the sealant manufacturer's rec ommendations when selecting and applying the pipe dope. 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

PAGE B - 3

OM-00621 10 SERIES sump at a distance equal to 1‐1/2 times the diame ter of the suction line.

If there is a liquid flow from an open pipe into the sump, the flow should be kept away from the suc tion inlet because the inflow will carry air down into the sump, and air entering the suction line will re duce pump efficiency.

If it is necessary to position inflow close to the suc tion inlet, install a baffle between the inflow and the suction inlet at a distance 1‐1/2 times the diameter of the suction pipe. The baffle will allow entrained air to escape from the liquid before it is drawn into the suction inlet.

If two suction lines are installed in a single sump, the flow paths may interact, reducing the efficiency of one or both pumps. To avoid this, position the suction inlets so that they are separated by a dis tance equal to at least 3 times the diameter of the suction pipe.

Suction Line Positioning

The depth of submergence of the suction line is critical to efficient pump operation.

Figure 2 shows recommended minimum submergence vs. veloc ity.

NOTE

The pipe submergence required may be reduced by installing a standard pipe increaser fitting at the end of the suction line. The larger opening size will reduce the inlet velocity. Calculate the required submergence using the following formula based on the increased opening size (area or diameter).

PAGE B - 4

Figure 2. Recommended Minimum Suction Line Submergence vs. Velocity

INSTALLATION

10 SERIES OM-00621

DISCHARGE LINES

Siphoning

Do not terminate the discharge line at a level lower than that of the liquid being pumped unless a si phon breaker is used in the line. Otherwise, a si phoning action causing damage to the pump could result.

Valves

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 and a system check valve be in stalled in the discharge line to protect the pump from excessive shock pressure and reverse rota tion when it is stopped.

In low discharge head applications (less than 30 feet (9,1 m)), it is recommended that the bypass line be run back to the wet well, and located 6 inches below the water level or cut‐off point of the low level pump. In some installations, this bypass outline may be terminated with a six‐to‐eight foot

(1,8 to 2,4 m) length of 1‐1/4 inch (31,8 mm) I.D.

smooth‐bore hose; air and liquid vented during the priming process will then agitate the hose and break up any solids, grease, or other substances likely to cause clogging.

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

Bypass Lines

Self‐priming pumps are not air compressors. Dur ing the priming cycle, air from the suction line must be vented to atmosphere on the discharge side. If the discharge line is open, this air will be vented through the discharge. However, if a check valve has been installed in the discharge line, the dis charge side of the pump must be opened to atmos pheric pressure through a bypass line installed be tween the pump discharge and the check valve. A self‐priming centrifugal pump will not prime if there is sufficient static liquid head to hold the dis charge check valve closed.

NOTE

The bypass line should be sized so that it does not affect pump discharge capacity; however, the by pass line should be at least 1 inch (25,4 mm) in di ameter to minimize the chance of plugging.

INSTALLATION

A bypass line that is returned to a wet well must be secured against being drawn into the pump suction inlet.

It is also recommended that pipe unions be in stalled at each 90

_

elbow in a bypass line to ease disassembly and maintenance.

In high discharge head applications (more than

30 feet (9,1 m), an excessive amount of liquid may be bypassed and forced back to the wet well under the full working pressure of the pump; this will re duce overall pumping efficiency. Therefore, it is recommended that a Gorman‐Rupp Automatic

Air Release Valve be installed in the bypass line.

Gorman‐Rupp Automatic Air Release Valves are reliable, and require minimum maintenance. See

Automatic Air Release Valves in this section for installation and theory of operation of the Auto matic Air Release Valve. Consult your Gorman‐

Rupp distributor, or contact the Gorman‐Rupp

Company for selection of an Automatic Air Release

Valve to fit your application.

Except in certain specific applications (to prevent flooding during service of an auto matic air release valve in a below‐ground lift station), if a manual shut‐off valve is in stalled anywhere in a bypass line, it must be a full‐opening, ball‐type valve to pre vent plugging by solids.

PAGE B - 5

OM-00621 10 SERIES

A manual shut‐off valve should not be installed in any bypass line. A manual shut‐off valve may inadvertently be left closed during operation. A pump which has lost prime may continue to operate without reaching prime, causing dan gerous overheating and possible explo sive rupture of the pump casing. Per sonnel could be severely injured.

Allow an over‐heated pump to com pletely cool before servicing. Do not re move plates, covers, gauges, or fittings from an over‐heated pump. Liquid with in the pump can reach boiling tempera tures, and vapor pressure within the pump can cause parts being disen gaged to be ejected with great force. Af ter the pump completely cools, drain the liquid from the pump by removing the casing drain plug. Use caution when re moving the plug to prevent injury to per sonnel from hot liquid.

AUTOMATIC AIR RELEASE VALVE

When properly installed, a Gorman‐Rupp Auto matic Air Release Valve will permit air to escape through the bypass line and then close automati cally when the pump is fully primed and pumping at full capacity.

Some leakage (1 to 5 gallons [3.8 to 19 liters] per minute) will occur when the valve is fully closed. Be sure the bypass line is directed back to the wet well or tank to prevent hazardous spills.

Consult the manual accompanying the Air Release

Valve for additional information on valve installation and performance.

Air Release Valve Installation

The Automatic Air Release Valve must be inde pendently mounted in a horizontal position be tween the pump discharge port and the inlet side of the discharge check valve (see Figure 3). The inlet opening in the Air Release Valve is equipped with standard 1‐inch NPT pipe threads.

PAGE B - 6 INSTALLATION

10 SERIES

90 _ LONG

RADIUS

ELBOW

CLEAN‐OUT

COVER

INSTALL AIR RELEASE VALVE

IN HORIZONTAL POSITION

SUPPORT

BRACKET

BLEED LINE 1”

(25,4 MM) DIA. MIN.

(CUSTOMER FUR

NISHED) DO NOT EX

TEND BELOW PUMP

OFF LIQUID LEVEL

SUCTION

LINE

OM-00621

DISCHARGE PIPE

DISCHARGE

CHECK VALVE

PUMP DISCHARGE

SELF‐PRIMING

CENTRIFUGAL

PUMP

WET WELL

OR SUMP

Figure 3. Typical Automatic Air Release Valve Installation

Connect the valve outlet to a bleed line which slopes back to the wet well or sump. The bleed line must be the same size as the outlet opening or larger, depending on which Air Release Valve is be ing used. If piping is used for the bleed line, avoid the use of elbows whenever possible.

shafts are aligned with and parallel to each other. It is imperative that alignment be checked after the pump and piping are installed, and before opera tion.

NOTE

Check Rotation , Section C, before final alignment of the pump.

NOTE

For multiple pump installations, it is recommended that each Air Release Valve be fitted with an inde pendent bleeder line directed back to the wet well.

If multiple Air Release Valves are installed in a sys tem, do not direct bleeder lines to a common mani fold pipe. Contact your Gorman‐Rupp distributor or the Gorman‐Rupp Company for information about installation of an Automatic Air Release Valve for your specific application.

When mounted at the Gorman‐Rupp factory, driver and pump are aligned before shipment. Misalign ment will occur in transit and handling. Pumps must be checked and realigned before operation.

Before checking alignment, tighten the foundation bolts. The pump casing feet and/or pedestal feet, and the driver mounting bolts should also be tightly secured.

ALIGNMENT

The alignment of the pump and its power source is critical for trouble‐free mechanical operation. In either a flexible coupling or V‐belt driven system, the driver and pump must be mounted so that their

INSTALLATION

When checking alignment, disconnect the power source to ensure that the pump will remain inoperative.

PAGE B - 7

OM-00621 10 SERIES

Adjusting the alignment in one direction may alter the alignment in another direc tion. check each procedure after altering alignment.

Coupled Drives

When using couplings, the axis of the power source must be aligned to the axis of the pump shaft in both the horizontal and vertical planes.

Most couplings require a specific gap or clearance between the driving and the driven shafts. Refer to the coupling manufacturer's service literature.

Align spider insert type couplings by using calipers to measure the dimensions on the circumference of the outer ends of the coupling hub every 90 de grees. The coupling is in alignment when the hub ends are the same distance apart at all points (see

Figure 4A).

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 misalign ment.

V‐Belt Drives

When using V‐belt drives, the power source and the pump must be parallel. Use a straightedge along the sides of the pulleys to ensure that the pul leys are properly aligned (see Figure 4C). In drive systems using two or more belts, make certain that the belts are a matched set; unmatched sets will cause accelerated belt wear.

Figure 4A. Aligning Spider Type Couplings

MISALIGNED:

SHAFTS

NOT PARALLEL

MISALIGNED:

SHAFTS

NOT IN LINE

ALIGNED: SHAFTS

PARALLEL AND

SHEAVES IN LINE

Figure 4C. Alignment of V‐Belt Driven Pumps

Tighten the belts in accordance with the belt manu facturer's instructions. If the belts are too loose, they will slip; if the belts are too tight, there will be excessive power loss and possible bearing failure.

Select pulleys that will match the proper speed ra tio; overspeeding the pump may damage both pump and power source.

Figure 4B. Aligning Non‐Spider Type

Couplings

Align non‐spider type couplings by using a feeler gauge or taper gauge between the coupling halves every 90 degrees. The coupling is in alignment when the hubs are the same distance apart at all points (see Figure 4B).

PAGE B - 8

Do not operate the pump without the shields and/or guards in place over the drive shaft, belts, and/or couplings, or other rotating parts. Exposed rotating parts can catch clothing, fingers, or tools, causing severe injury to person nel.

INSTALLATION

10 SERIES OM-00621

V‐BELT TENSIONING

General Rules of Tensioning

For new v‐belts, check the tension after 5, 20 and

50 hours of operation and re‐tension as required

(see the following procedure for measuring belt tension). Thereafter, check and re‐tension if re quired monthly or at 500 hour intervals, whichever comes first.

Ideal v‐belt tension is the lowest tension at which the belt will not slip under peak load conditions. Do not over‐tension v‐belts. Over‐tensioning will short en both v‐belt and bearing life. Under‐tensioning will cause belt slippage. Always keep belts free from dirt, grease, oil and other foreign material which may cause slippage.

Tension Measurement

Correct v‐belt tension can be achieved using a v‐ belt tension tester and Table 1 or 2. Use the tables to find the v‐belt size (cross‐section), the smallest sheave diameter, the belt type for your application.

The corresponding deflection force required for new or used belts is shown opposite the RPM range of the pump.

Belt Span

Deflection

The ratio of deflection to belt span is 1:64 for both

ASA and metric units. Therefore, a belt with a span of 64 inches would require a deflection of 1 inch at the force shown on the Tables for your particular application.

For example, if the span as measured in Figure 5 is

32 inches (813 mm), the v‐belt cross‐section is C, the smallest sheave diameter is 8 inches, the pump speed is 1250 RPM, and the belts are uncogged

Yy‐T type, then 11.5 lbs. of force on the tensioner should show 1/2‐inch (12,7 mm) of deflection.

A tension tester is available as an option from Gor man‐Rupp (P/N 29513-001). Other tension test ers are available from your local belt/sheave dis tributor, and work on a similar principal.

To use the Gorman‐Rupp tensioner, measure the belt span as shown in Figure 5. Position the bottom of the large O‐ring on the span scale of the tension er at the measured belt span. Set the small O‐ring on the deflection force scale to zero.

Place the tension tester squarely on the belt at the center of the belt span. Apply force on the plunger, perpendicular to the belt span, until the bottom of the large O‐ring is even with the top of the next belt, or with the bottom of a straight edge laid across the sheaves.

Figure 5. Belt Tension Measurement

Read the force applied from the bottom of the small

O‐ring on the deflection force scale. Compare this force with the value shown in Table 1 or 2 and ad just the tension accordingly. Note that the tension for new belts is higher than that for used belts to allow for expected belt stretching. Do not over‐ten sion used belts to the higher deflection forces shown for new belts.

INSTALLATION PAGE B - 9

OM-00621

Table 1. Sheave Diameter (Inches)

Deflection Force (Lbs.)

Cross

Section

Smallest

Sheave

Diameter

Range

A,AX

R.P.M.

Range

3.0 ‐ 3.6

1000‐2500

2501‐4000

3.8 ‐ 4.8

1000‐2500

2501‐4000

5.0 ‐ 7.0

1000‐2500

2501‐4000

B,BX

C,CX

D

3V,

3VX

5V,

5VX

8V

3.4 ‐ 4.2

4.4 ‐ 5.6

5.8 ‐ 8.6

7.0 ‐ 9.0

9.5 ‐ 16.0

12.0 ‐ 16.0

18.0 ‐ 20.0

2.2 ‐ 2.4

2.65 ‐ 3.65

4.12 ‐ 6.90

4.4 ‐ 6.7

7.1 ‐ 10.9

11.8 ‐ 16.0

12.5 ‐ 17.0

18.0 ‐ 22.4

200‐850

851‐1500

1000‐2500

2501‐4000

1000‐2500

2501‐4000

1000‐2500

2501‐4000

500‐1749

1750‐3000

3001‐4000

500‐1740

1741‐3000

500‐1740

1741‐3000

200‐850

851‐1500

200‐850

851‐1500

860‐2500

2501‐4000

860‐2500

2501‐4000

860‐2500

2501‐4000

500‐1740

1741‐3000

500‐1740

1741‐3000

200‐850

851‐1500

Belt Deflection Force

Uncogged

Hy‐T Belts &

Uncogged

Hy‐T Torque

Team

Cogged

Torque‐Flex

& Machined

Edge torque

Team Belts

14.1

12.5

11.5

9.4

30.4

25.6

5.3

4.5

6.3

6.0

11.5

9.4

Used

Belt

3.7

2.8

4.5

3.8

5.4

4.7

15.5

14.6

33.0

26.8

39.6

35.3

3.6

3.0

4.9

4.4

12.7

11.2

18.9

16.7

23.4

21.8

49.3

39.9

59.2

52.7

7.9

6.7

9.4

8.9

17.0

13.8

21.0

18.5

17.0

13.8

45.2

38.0

New

Belt

5.5

4.2

6.8

5.7

8.0

7.0

Used

Belt

4.1

3.4

5.0

4.3

5.7

5.1

5.1

4.4

7.3

6.6

3.3

2.9

4.2

3.8

5.3

4.9

10.2

8.8

5.6

14.8

13.7

17.1

16.8

8.5

7.3

14.7

11.9

15.9

14.6

4.9

4.2

7.1

7.1

14.7

11.9

New

Belt

6.1

5.0

7.4

6.4

9.4

7.4

7.2

6.2

10.5

9.1

12.6

10.9

21.8

17.5

23.5

21.6

21.8

17.5

7.9

7.3

15.2

13.2

8.5

22.1

20.1

25.5

25.0

4.9

4.3

6.2

5.6

10 SERIES

Table 2. Sheave Diameter (Millimeters)

Deflection Force (KG.)

Cross

Section

Smallest

Sheave

Diameter

Range

A,AX

R.P.M.

Range

75 ‐ 90

1000‐2500

2501‐4000

91 ‐ 120

1000‐2500

2501‐4000

125 ‐ 175

1000‐2500

2501‐4000

B,BX

C,CX

D

3V,

3VX

5V,

5VX

8V

85 ‐ 105

106 ‐ 140

141 ‐ 220

175 ‐ 230

231 ‐ 400

305 ‐ 400

401 ‐ 510

55 ‐ 60

61 ‐ 90

91 ‐ 175

110 ‐ 170

171 ‐ 1275

276 ‐ 400

315 ‐ 430

431 ‐ 570

200‐850

851‐1500

1000‐2500

2501‐4000

1000‐2500

2501‐4000

1000‐2500

2501‐4000

500‐1749

1750‐3000

3001‐4000

500‐1740

1741‐3000

500‐1740

1741‐3000

200‐850

851‐1500

200‐850

851‐1500

860‐2500

2501‐4000

860‐2500

2501‐4000

860‐2500

2501‐4000

500‐1740

1741‐3000

500‐1740

1741‐3000

200‐850

851‐1500

Belt Deflection Force

Uncogged

Hy‐T Belts &

Uncogged

Hy‐T Torque

Team

Cogged

Torque‐Flex

& Machined

Edge torque

Team Belts

6.4

5.7

11.3

9.6

13.8

11.6

2.4

2.0

2.9

2.7

5.2

4.3

Used

Belt

1.7

1.3

2.0

1.7

2.4

2.1

5.8

5.1

7.0

6.6

15.0

12.2

18.0

16.0

1.6

1.4

2.2

2.0

8.6

7.6

10.6

9.9

22.4

18.1

26.8

23.9

New

Belt

2.5

1.9

3.1

2.6

3.6

3.2

Used

Belt

1.9

1.5

2.3

2.0

2.6

2.3

2.3

2.0

3.3

3.0

1.5

1.3

1.9

1.7

2.4

2.2

4.6

4.0

2.5

6.7

6.2

7.8

7.6

16.8

14.2

20.5

17.2

3.6

3.0

4.3

4.0

7.7

6.3

9.5

8.4

3.9

3.3

6.7

5.4

7.2

6.6

2.2

1.9

3.2

3.2

5.7

4.9

9.9

7.9

10.7

9.8

3.3

2.8

4.8

4.1

New

Belt

2.8

2.3

3.4

2.9

4.3

3.4

10.0

9.1

11.6

11.3

3.6

3.3

6.9

6.0

3.9

2.2

2.0

2.8

2.5

PAGE B - 10 INSTALLATION

10 SERIES OM-00621

OPERATION - SECTION C


Follow the instructions on all tags, labels and decals attached to the pump.

1. The pump is being put into service for the first time.

2. The pump has not been used for a consider able length of time.

3. The liquid in the pump casing has evapo rated.

Once the pump casing has been filled, the pump will prime and reprime as necessary.

This pump is designed to handle most non‐volatile, non‐flammable liquids containing specified entrained solids.

Do not attempt to pump liquids which may damage the pump or endanger per sonnel as a result of pump failure.

Pump speed and operating condition points must be within the continuous per formance range shown on the curve (see

Section E, Page 1).

PRIMING

Install the pump and piping as described in IN

STALLATION . Make sure that the piping connec tions are tight, and that the pump is securely mounted. Check that the pump is properly lubri cated (see LUBRICATION in MAINTENANCE

AND REPAIR ).

This pump is self‐priming, but the pump should never be operated unless there is liquid in the pump casing.

After filling the pump casing, reinstall and tighten the fill plug. Do not attempt to operate the pump unless all connect ing piping is securely installed. Other wise, liquid in the pump forced out un der pressure could cause injury to per sonnel.

To fill the pump, remove the pump casing fill cover or fill plug in the top of the casing, and add clean liquid until the casing is filled. Replace the fill cover or fill plug before operating the pump.

STARTING

Consult the operations manual furnished with the power source .

Rotation

The correct direction of pump rotation is counter clockwise when facing the impeller. If the pump is operated in the wrong direction, the impeller could become loosened from the shaft and seriously damage the pump.

Never operate this pump unless there is liquid in the pump casing. The pump will not prime when dry. Extended operation of a dry pump will destroy the seal assembly.

Add liquid to the pump casing when:

OPERATION

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

PAGE C - 1

OM-00621 10 SERIES

Consult the operating manual furnished with the power source before attempting to start the power source.

If an electric motor is used to drive the pump, re move V‐belts, couplings, or otherwise disconnect the pump from the motor before checking motor rotation. Operate the motor independently while observing the direction of the motor shaft, or cool ing fan.

If rotation is incorrect on a three‐phase motor, have a qualified electrician interchange any two of the three phase wires to change direction. If rotation is incorrect on a single‐phase motor, consult the lit erature supplied with the motor for specific instruc tions.

OPERATION filled, adjust the throttling valve to the required flow rate.

Leakage

No leakage should be visible at pump mating sur faces, or at pump connections or fittings. Keep all line connections and fittings tight to maintain maxi mum pump efficiency.

Liquid Temperature And Overheating

The maximum liquid temperature for this pump is

110

_

F (43

_

C). Do not apply it at a higher operating temperature.

Overheating can occur if operated with the valves in the suction or discharge lines closed. Operating against closed valves could bring the liquid to a boil, build pressure, and cause the pump to rup ture or explode. If overheating occurs, stop the pump and allow it to completely cool before servic ing it. Refill the pump casing with cool liquid.

Lines With a Bypass

Close the discharge throttling valve (if so equipped) so that the pump will not have to prime against the weight of the liquid in the discharge line. Air from the suction line will be discharged through the bypass line back to the wet well during the priming cycle. When the pump is fully primed and liquid is flowing steadily from the bypass line, open the discharge throttling valve. Liquid will then continue to circulate through the bypass line while the pump is in operation.

Lines Without a Bypass

Open all valves in the discharge line and start the engine. Priming is indicated by a positive reading on the discharge pressure gauge or by a quieter operation. The pump may not prime immediately because the suction line must first fill with liquid. If the pump fails to prime within five minutes, stop it and check the suction line for leaks.

After the pump has been primed, partially close the discharge line throttling valve in order to fill the line slowly and guard against excessive shock pres sure which could damage pipe ends, gaskets, sprinkler heads, and any other fixtures connected to the line. When the discharge line is completely

PAGE C - 2

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.

Strainer Check

If a suction strainer has been shipped with the pump or installed by the user, check the strainer regularly, and clean it as necessary. The strainer should also be checked if pump flow rate begins to drop. If a vacuum suction gauge has been in stalled, monitor and record the 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 neces sary, liquid pressure must be limited to 50% of the

OPERATION

10 SERIES OM-00621 maximum permissible operating pressure shown on the pump performance curve (see Section E,

Page 1).

Pump Vacuum Check

With the pump inoperative, install a vacuum gauge in the system, using pipe dope on the threads.

Block the suction line and start the pump. At oper ating speed the pump should pull a vacuum of 20 inches (508,0 mm) or more of mercury. If it does not, check for air leaks in the seal, gasket, or dis charge valve.

Open the suction line, and read the vacuum gauge with the pump primed and at operation speed.

Shut off the pump. The vacuum gauge reading will immediately drop proportionate to static suction lift, and should then stabilize. If the vacuum reading falls off rapidly after stabilization, an air leak exists.

Before checking for the source of the leak, check the point of installation of the vacuum gauge.

BEARING TEMPERATURE CHECK

Bearings normally run at higher than ambient tem peratures because of heat generated by friction.

Temperatures up to 160 _ F (71 _ C) are considered normal for bearings, and they can operate safely to at least 180

_

F (82

_

C).

Checking bearing temperatures by hand is inaccu rate. Bearing temperatures can be measured ac curately by placing a contact‐type thermometer against the housing. Record this temperature for future reference.

A sudden increase in bearing temperatures is a warning that the bearings are at the point of failing to operate properly. Make certain that the bearing lubricant is of the proper viscosity and at the cor rect level (see LUBRICATION in Section E). Bear ing 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. Con tinued operation should bring the temperatures down to normal levels.

STOPPING

Never halt the flow of liquid suddenly. If the liquid being pumped is stopped abruptly, damaging shock waves can be transmitted to the pump and piping system. Close all connecting valves slowly.

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

After stopping the pump, lock out or disconnect the power source to ensure that the pump will re main inoperative.

Cold Weather Preservation

In below freezing conditions, drain the pump to prevent damage from freezing. Also, clean out any solids by flushing with a hose. Operate the pump for approximately one minute; this will remove any remaining liquid that could freeze the pump rotat ing parts. If the pump will be idle for more than a few hours, or if it has been pumping liquids con taining a large amount of solids, drain the pump, and flush it thoroughly with clean water. To prevent large solids from clogging the drain port and pre venting the pump from completely draining, insert a rod or stiff wire in the drain port, and agitate the liquid during the draining process. Clean out any remaining solids by flushing with a hose.

OPERATION PAGE C - 3

10 SERIES

TROUBLESHOOTING - SECTION D


OM-00621


1. Familiarize yourself with this manual.

2. Disconnect or lock out the power source to ensure that the pump will remain inoperative.


4. Check the temperature before open ing any covers, plates, or plugs.


6. Vent the pump slowly and cautiously.


TROUBLE

PUMP FAILS TO

PRIME

PUMP STOPS OR

FAILS TO DELIVER

RATED FLOW OR

PRESSURE

POSSIBLE CAUSE PROBABLE REMEDY

Not enough liquid in casing.

Suction check valve contaminated or damaged.

Air leak in suction line.

Lining of suction hose collapsed.

Add liquid to casing. See

Correct leak.

Replace suction hose.

PRIMING

Clean or replace check valve.

Leaking or worn seal or pump gasket.

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

Suction lift or discharge head too high.

Check piping installation and in stall bypass line if needed. See

INSTALLATION .

Strainer clogged.

Check strainer and clean if neces sary.

Air leak in suction line.

Lining of suction hose collapsed.

Correct leak.

Replace suction hose.

Leaking or worn seal or pump gasket.

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

Strainer clogged.

Check strainer and clean if neces sary.

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

Check installation and correct sub mergence as needed.

.

TROUBLESHOOTING PAGE D - 1

OM-00621 10 SERIES

TROUBLE

PUMP STOPS OR

FAILS TO DELIVER

RATED FLOW OR

PRESSURE (cont.)

POSSIBLE CAUSE

Impeller or other wearing parts worn or damaged.

Impeller clogged.

Pump speed too slow.

Discharge head too high.

Suction lift too high.

PUMP REQUIRES

TOO MUCH

POWER

PUMP

CLOGS FRE

QUENTLY

EXCESSIVE NOISE

BEARINGS

RUN TOO HOT

Pump speed too high.

Discharge head too low.

Liquid solution too thick.

Bearing(s) frozen.

Liquid solution too thick.

Discharge flow too slow.

Suction check valve or foot valve clogged or binding.

Cavitation in pump.

Pumping entrained air.

Pump or drive not securely mounted.

Impeller clogged or damaged.

Bearing temperature is high, but within limits.

Low or incorrect lubricant.

Suction and discharge lines not properly supported.

Drive misaligned.

PROBABLE REMEDY

Replace worn or damaged parts.

Check that impeller is properly centered and rotates freely.

Free impeller of debris.

Check driver output; check belts or couplings for slippage.

Install bypass line.

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

Check driver output; check that sheaves or couplings are cor rectly sized.

Adjust discharge valve.

Dilute if possible.

Disassemble pump and check bearing(s).

Dilute if possible.

Open discharge valve fully to in crease flow rate, and run power source at maximum governed speed.

Clean valve.

Reduce suction lift and/or friction losses in suction line. Record vac uum and pressure gauge readings and consult local representative or factory.

Locate and eliminate source of air bubble.

Secure mounting hardware.

Clean out debris; replace dam aged parts.

Check bearing temperature regu larly to monitor any increase.

Check for proper type and level of lubricant.

Check piping installation for proper support.

Align drive properly.

PAGE D - 2 TROUBLESHOOTING

10 SERIES OM-00621

PREVENTIVE MAINTENANCE

Since pump applications are seldom identical, and pump wear is directly affected by such things as the abrasive qualities, pressure and temperature of the liquid being pumped, this section is intended only to provide general recommendations and practices for preventive maintenance. Regardless of the application however, following a routine pre ventive maintenance schedule will help assure trouble‐free performance and long life from your

Gorman‐Rupp pump. For specific questions con cerning your application, contact your Gorman‐

Rupp distributor or the Gorman‐Rupp Company.

Record keeping is an essential component of a good preventive maintenance program. Changes in suction and discharge gauge readings (if so equipped) between regularly scheduled inspec tions can indicate problems that can be corrected before system damage or catastrophic failure oc curs. The appearance of wearing parts should also be documented at each inspection for comparison as well. Also, if records indicate that a certain part

(such as the seal) fails at approximately the same duty cycle, the part can be checked and replaced before failure occurs, reducing unscheduled down time.

For new applications, a first inspection of wearing parts at 250 hours will give insight into the wear rate for your particular application. Subsequent inspec tions should be performed at the intervals shown on the chart below. Critical applications should be inspected more frequently.

Item

Preventive Maintenance Schedule

Daily

Service Interval*

Weekly Monthly Semi‐

Annually

Annually

General Condition (Temperature, Unusual

Noises or Vibrations, Cracks, Leaks,

Loose Hardware, Etc.)

Pump Performance (Gauges, Speed, Flow)

Bearing Lubrication

Seal Lubrication (And Packing Adjustment,

If So Equipped)

V‐Belts (If So Equipped)

Air Release Valve Plunger Rod (If So Equipped)

Front Impeller Clearance (Wear Plate)

Rear Impeller Clearance (Seal Plate)

Check Valve

Pressure Relief Valve (If So Equipped)

Pump and Driver Alignment

Shaft Deflection

Bearings

Bearing Housing

Piping

Driver Lubrication - See Mfgr's Literature

I

I

I

I

I

I

C

I

I

R

R

I

I

I

I

I

I

C

Legend:

I = Inspect, Clean, Adjust, Repair or Replace as Necessary

C = Clean

R = Replace

* Service interval based on an intermittent duty cycle equal to approximately 4000 hours annually.

Adjust schedule as required for lower or higher duty cycles or extreme operating conditions.

TROUBLESHOOTING PAGE D - 3

10 SERIES OM-00621

PUMP MAINTENANCE AND REPAIR ‐ SECTION E

MAINTENANCE AND REPAIR OF THE WEARING PARTS OF THE PUMP WILL MAINTAIN PEAK

OPERATING PERFORMANCE.

STANDARD PERFORMANCE FOR PUMP MODEL 13A2-B

Based on 70

_

F (21

_

C) clear water at sea level with minimum suction lift. Since pump installations are seldom identical, your performance may be dif ferent due to such factors as viscosity, specific gravity, elevation, temperature, and impeller trim.

Contact the Gorman‐Rupp Company to verify per formance or part numbers.

If your pump serial number is followed by an “N”, your pump is NOT a standard production model.

Pump speed and operating condition points must be within the continuous per formance range shown on the curve.

MAINTENANCE & REPAIR PAGE E - 1

OM-00621

PARTS PAGE

SECTION DRAWING

10 SERIES

PAGE E - 2

Figure E-1. Pump Model 13A2-B

MAINTENANCE & REPAIR

10 SERIES OM-00621

PARTS LIST

Pump Model 13A2-B

(From S/N 710664 Up)

If your pump serial number is followed by an “N”, your pump is NOT a standard production model. Contact the Gorman‐Rupp Company to verify part numbers.

ITEM

NO.

PART NAME PART

NUMBER

QTY

.

1 PUMP CASING

2 IMPELLER

3 GREASE SEAL ASSY

.

4 PIPE PLUG

.

5 FILL PLUG ASSY

6 PIPE NIPPLE

7 PIPE COUPLING

8 GREASE CUP

9 SEAL PLATE ASSY

10 SEAL LINER

11 SLINGER RING

12 OIL SEAL

13 BALL BEARING

14 AIR VENT

15 PEDESTAL

16 ROTATION DECAL

SEE NOTE BELOW

2996C 11010

GS1000

P04 15079

48271-069

T0412 15079

AE04 15079

S1509

392B 10010

83 14080

3272 19120

25227-311

23275-008

S1703

3114B 10010

2613M

1

17 O‐RING

18 BEARING RETAINER

19 RETAINING RING

20 OIL SEAL

21 SHAFT KEY

25152-235

38322-521 26000

S247

25227-303

N0407 15990

22 IMPELLER SHAFT 38514-549 15010 1

23 ALLEN HD SETSCREW GA#10-01S 15990 2

24 BEARING ADJ SHIM SET 48261-009 1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

REF

1

25 BALL BEARING

26 SIGHT GAUGE

23275-008

26714-011

27 PIPE PLUG P06 15079

28 PEDESTAL DRAIN PLUG P06 15079

29 STUD

30 HEX NUT

C0607 15991

J06 15991

31 CASING GASKET SET

32 IMP ADJ SHIM SET

33 WEAR PLATE ASSY

3G 18000

2X 17090

2634A 15990

34 IMPELLER WASHER 10474 15030

35 SOCKET HD CAPSCREW DM0603 15991

36 HEX NUT D06 15991

37 LOCK WASHER

.

38 CASING DRAIN PLUG

39 BACK COVER GASKET

J06 15991

P08 15079

2985G 19090

40 BACK CVR PLATE ASSY 42111-921

41 -WARNING PLATE 2613EV 13990

1

1

1

1

8

8

1

REF

1

1

2

1

1

2

1

1

1

INDICATES PARTS RECOMMENDED FOR STOCK

.

INCLUDED WITH REPAIR

PUMP CASING ASSY

46471-508 1

ITEM

NO.

PART NAME PART

NUMBER

42 -DRIVE SCREW

43 -BACK COVER

44 -PIPE PLUG

45 CLAMP

46 BACK COVER SCREW

47 NAME PLATE

48 DRIVE SCREW

49 HEX HD CAPSCREW

50 LOCK WASHER

51 FLAP VALVE ASSY

BM#04-03 17000

NOT AVAILABLE

P04 15079

2987 11010

2536 24000

38819-002 13000

BM#04-03 17000

B0805 15991

J08 15991

1348

52 -FLAP VALVE GASKET

53 -SMALL VALVE WT

1348G 19070

18B 10010

54 -RD HD MACH SCREW X0504 17090

55 -LOCKWASHER J05 17090

56

57

58

-LARGE VALVE WT

PIPE PLUG

SUCTION FLANGE

NOT SHOWN:

2944 10010

P04 15079

2943 10010

G‐R DECAL

INSTRUCTION LABEL

LUBE DECAL

INSTRUCTION TAG

INSTRUCTION TAG

SUCTION STICKER

PRIMING STICKER

GREASE CUP INSTR

DISCHARGE STICKER

GR-03

2613DK

38816-079

38817-011

38817-012

6588AG

6588AH

6588BD

6588BJ

WARNING DECAL

OPTIONAL:

STRAINER

2613FE

4917 24001

SPOOL FLANGE SUCTION:

-FLANGE 1753A 10010

-CLOSE NIPPLE T48 15079

SPOOL FLANGE DISCHARGE:

-FLANGE

-CLOSE NIPPLE

1753A 10010

T48 15079

HI TEMP SHUT DOWN KITS:

-120°F 48313-257

-130°F 48313-256

-145°F 48313-186

HIGH TEMP SHUTDOWN THERMOSTAT KIT:

-145°F 48313-172

QTY

1

1

1

1

1

1

1

1

1

1

1

4

4

4

1

1

1

1

1

4

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1


OM-00621 10 SERIES

PUMP AND SEAL DISASSEMBLY

AND REASSEMBLY

Review all SAFETY information Section A.

Follow the instructions on all tags, label and de cals attached to the pump.

This pump requires little service due to its rugged, minimum‐maintenance design. However, if it be comes necessary to inspect or replace the wearing parts, follow these instructions which are keyed to the sectional view (see Figure 1) and the accompa nying parts list.

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 antici pate and provide detailed instructions and 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 estab lishing that neither personal safety nor pump integrity are compromised by such practices.

Before attempting to service the pump, lock out or disconnect the power source to ensure that it will remain inoperative. Close all valves in the suction and discharge lines.

For power source disassembly and repair, consult the literature supplied with the power source, or contact your local power source representative.


1. Familiarize yourself with this man ual.

2. Lock out or disconnect the power source to ensure that the pump will remain inoperative.


4. Check the temperature before opening any covers, plates, or plugs.





PAGE E - 4 MAINTENANCE & REPAIR

10 SERIES OM-00621

Use Only Genuine Gorman-Rupp re placement parts. Failure to do so may cre ate a hazard and damage the pump or di minish optimal pump performance. Any such hazard, damage or diminished per formance is not covered by the warranty.

NOTE

When appropriate recycling facilities are available, the user should recycle components and fluids when doing any routine maintenance / repairs and also at the end of the pump’s useful life. All other components and fluids shall be disposed of ac cording to all applicable codes and regulations.

Suction Check Valve Removal and Disassembly

Before attempting to service the pump, remove the pump casing drain plug (38) and drain the pump.

Clean and reinstall the drain plug.

To service the suction check valve, remove the suc tion piping. Remove the hardware (49 and 50) se curing the suction flange (58) and the check valve assembly (51) to the pump casing (1). Pull the check valve assembly from the suction port.

Inspect the check valve parts for wear or damage.

If replacement is required, remove the hardware

(54 and 55) and separate the valve gasket (52) and weights (53 and 56).

If no further disassembly is required, see Suction

Check Valve Installation .

Back Cover Removal

The wear plate assembly (32) is easily accessible and may be serviced by removing the back cover assembly (40). Loosen the clamp bar screw (46) and remove the clamp bar (45). Pull the back cover and wear plate from the pump casing. Remove the

MAINTENANCE & REPAIR back cover gasket (39). Clean the mating surfaces of the back cover plate and pump casing.

Inspect the wear plate and replace it if badly scored or worn. To remove the wear plate, disengage the hardware (36 and 37) securing it to the back cover.

If no further disassembly is required, see Back

Cover Installation .

Pump Casing Removal

To service the impeller (2) or seal assembly (3), dis connect the discharge piping. Remove the hard ware securing the pump casing (1) to the base. Tie and tag any leveling shims used under the casing mounting feet to ease reassembly.

Remove the nuts (30) securing the pump casing and gasket set (31) to the pedestal (15) and seal plate (9). Separate the casing from the seal plate and pedestal.

Remove the gasket set (31) from the pedestal and seal plate. Tie and tag the gaskets, or measure and record their thickness for ease of reassembly.

Impeller Removal

Before removing the impeller, turn the cross arm on the automatic grease cup (8) clockwise until it rest against the cover (see Figure 4). This will prevent the grease from escaping when the impeller is re moved.

Disconnect the power source.

Immobilize the impeller by wedging a block wood between the vanes. If removed, install the shaft key (21). Install a lathe dog on the drive end of the shaft (22) with the “V” notch positioned over the shaft keyway.

With the impeller rotation still blocked, strike the lathe dog sharply in a counterclockwise direction

(when facing the drive end of the shaft). The impel ler may also be loosened by using a long piece of heavy bar stock to pry against the arm of the lathe dog in a counterclockwise direction (when facing the drive end of the shaft) as shown in Figure 2.

Use caution not to damage the shaft or keyway.

When the impeller breaks loose, remove the lathe dog and wood block and unscrew the impeller from the shaft.

PAGE E - 5

OM-00621

Turn

Counterclockwise

10 SERIES

Shaft and Bearing Removal and Disassembly

When the pump is properly operated and main tained, the pedestal should not require disassem bly. Disassemble the shaft and bearings only when there is evidence of wear or damage.

Lathe Dog Arm

Heavy

Bar Stock

“V” Notch

Shaft Key

Impeller Shaft

Lathe Dog

Setscrew

Figure 2. Loosening Impeller

Unscrew the impeller from the shaft. Use caution when removing the impeller; tension on the seal spring will be released as the impeller is un screwed.

Inspect the impeller and replace it if cracked or badly worn. Slide the impeller adjusting shims (32) off the impeller shaft. Tie and tag the shims, or measure and record their thickness for ease of reassembly.

Seal Removal and Disassembly

(Figures 1 and 3)

Remove the grease cup and piping (6, 7 and 8) from the seal plate. Slide the seal plate and seal as sembly off the shaft as a unit. Carefully remove the rotating and stationary seal elements, packing rings, stationary washers, seal spring and shaft sleeve from the seal plate.

Inspect the seal liner (10) for wear or grooves which could cause leakage or damage to the seal packing rings. The seal liner is a press fit in the seal plate and does not normally require replacement.

If seal liner replacement is required, refer to Seal

Reassembly and Installation .

If no further disassembly is required, see Seal

Reassembly and Installation .

PAGE E - 6

Shaft and bearing disassembly in the field is not recommended. these operations should be performed only in a properly‐ equipped shop by qualified personnel.

Remove the pedestal drain plug (28) and drain the pedestal. Clean and reinstall the plug.

Remove the slinger ring (11) from the shaft. Re move the pedestal mounting hardware from the base. Tie and tag any shims used under the mounting feet for leveling.

Use snap ring pliers to remove the bearing retain ing ring (19) from the pedestal bore. Remove the bearing shim set (24); tie and tag the shims, or measure and record their thickness for ease of reassembly.

Remove the setscrews (23) from the bearing re tainer (18) and install two machine screws

(#10-32 X 1-inch long, not supplied). Pry the re tainer from the pedestal bore using a pair of screw drivers against the heads of the machine screws.

Do not use the machine screws to jack against the ball bearing. Remove the machine screws and re install the setscrews.

Press the oil seal (20) from the bearing retainer, and remove the O‐ring (17) from the pedestal bore.

Place a block of wood against the impeller end of the shaft and tap the shaft and assembled bear ings (13 and 25) out of the pedestal.

Press the oil seal (12) from the pedestal bore.

After removing the shaft and bearings, clean and inspect the bearings in place as follows.

To prevent damage during removal from


10 SERIES OM-00621 the shaft, it is recommended that bearings be cleaned and inspected in place . It is strongly recommended that the bearings be replaced any time the shaft and bear ings are removed.

Clean the pedestal, shaft and all component parts

(except the bearings) with a soft cloth soaked in cleaning solvent. Inspect the parts for wear or dam age and replace as necessary.

If bearing replacement is required, use a bearing puller to remove the inboard and outboard bear ings from the impeller shaft.

Shaft and Bearing Reassembly and Installation

Clean and inspect the bearings as indicated in

Shaft and Bearing Removal and Disassembly .

Most cleaning solvents are toxic and flammable. Use them only in a well‐ven tilated area free from excessive heat, sparks, and flame. Read and follow all precautions printed on solvent contain ers.

Inspect the shaft for distortion, nicks or scratches, or thread damage on the impeller end. Dress small nicks and burrs with a fine file or emery cloth. Re place the shaft if defective.

Clean the bearings thoroughly in fresh cleaning solvent. Dry the bearings with filtered compressed air and coat with light oil.

To prevent damage during removal from the shaft, it is recommended that bearings be cleaned and inspected in place . It is strongly recommended that the bearings be replaced any time the shaft and and bearings are removed.

The bearings may be heated to ease installation.

An induction heater, hot oil bath, electric oven, or hot plate may be used to heat the bearings. Bear ings should never be heated with a direct flame or directly on a hot plate.

NOTE

If a hot oil bath is used to heat the bearings, both the oil and the container must be absolutely clean. If the oil has been previously used, it must be thor oughly filtered.

Heat the bearings to a uniform temperature no higher than 250 _ F (120 _ C) and slide the bearings onto the shaft, one at a time, until they are fully seated. This should be done quickly, in one con tinuous motion, to prevent the bearings from cool ing and sticking on the shaft.

Bearings must be kept free of all dirt and foreign material. Failure to do so will great ly shorten bearing life. Do not spin dry bearings. This may scratch the balls or races and cause premature bearing fail ure.

Rotate the bearings by hand to check for rough ness or binding and inspect the bearing balls. If ro tation is rough or the bearing balls are discolored, replace the bearings.

The bearing tolerances provide a tight press fit onto the shaft and a snug slip fit into the pedestal.

Replace the bearings, shaft, or pedestal if the proper bearing fit is not achieved.


Use caution when handling hot bear ings to prevent burns.

After the bearings have been installed and allowed to cool, check to ensure that they have not moved out of position in shrinking. If movement has oc curred, use a suitably sized sleeve and a press to reposition the bearings.

If heating the bearings is not practical, use a suit ably sized sleeve and an arbor (or hydraulic) press to install the bearings on the shaft.

PAGE E - 7

OM-00621 10 SERIES

Seal Reassembly and Installation


When installing the bearings onto the shaft, never press or hit against the outer race, balls, or ball cage. Press only on the inner race.

Slide the shaft and assembled bearings into the pedestal until the inboard bearing is fully seated against the bore shoulder.

Clean the seal cavity and shaft with a cloth soaked in fresh cleaning solvent.

When installing the shaft and bearings into the bearing bore, push against the outer race. Never hit the balls or ball cage.

Position the inboard oil seal (12) in the pedestal

(15) with the lip positioned as shown in Figure 1.

Press the oil seal into the pedestal until the face is just flush with the machined surface in the hous ing.

Position the oil seal (20) in the bearing retainer (19) with the lip positioned as shown in Figure 1. Press the oil seal into the retainer until fully seated.

Replace the bearing retainer O‐ring (17) in the ped estal and lubricate it with grease. Press the bearing retainer into the pedestal until it seats against the bearing. Be careful not to cut the oil seal lip on the shaft keyway. Be sure the setscrews (23) in the bearing retainer are positioned horizontally inline.

Install the same thickness of bearing adjusting shims (24) as previously removed. Reinstall the re taining ring (19) and check shaft endplay.

NOTE

Shaft endplay should be .002 to .010 inch (0,05 to

0,25 mm). Add or remove bearing adjusting shims to obtain this endplay.

Install the slinger ring (11) and shaft key (21). Install any leveling shims used under the pedestal feet.

PAGE E - 8

Most cleaning solvents are toxic and flammable. Use them only in a well‐ven tilated area free from excessive heat, sparks, and flame. Read and follow all precautions printed on solvent contain ers.

The seal is not normally reused because wear pat terns on the finished faces cannot be realigned during reassembly. This could result in premature failure. If necessary to reuse an old seal in an emer gency, carefully wash all metallic parts in fresh cleaning solvent and allow to dry thoroughly.

Handle the seal parts with extreme care to prevent damage. Be careful not to contaminate precision finished faces; even fingerprints on the faces can shorten seal life. If necessary, clean the faces with a non‐oil based solvent and a clean, lint‐free tissue.

Wipe lightly in a concentric pattern to avoid scratching the faces.

Inspect the seal components for wear, scoring, grooves, and other damage that might cause leak age. Clean and polish the shaft sleeve, or replace it if there are nicks or cuts on either end. If any com ponents are worn, replace the complete seal; never mix old and new seal parts .

If a replacement seal is being used, remove it from the container and inspect the precision finished faces to ensure that they are free of any foreign matter.

To ease installation of the seal, lubricate the seal liner (10) with water or a very small amount of oil, and apply a drop of light lubricating oil on the fin ished faces. Assemble the seal as follows, (see Fig ure 3).


10 SERIES

SEAL PLATE

SPRING

STATIONARY

ELEMENT

IMPELLER

OM-00621

SEAL

LINER

ROTATING

ELEMENT

STATIONARY

WASHER

IMPELLER

SHAFT

SPACER

SLEEVE

IMPELLER

SHIMS

ROTATING

ELEMENT

STATIONARY

ELEMENT

PACKING RINGS

This seal is not designed for operation at temperatures above 110

_

F (43

_

C). Do not use at higher operating temperatures.

Before installing the seal, inspect the bore of the seal liner (10) for wear or grooves which might cause leakage or damage to the seal packing rings. If the seal liner requires replacement, re move the seal plate assembly as described in Seal

Removal And Disassembly , and position it on the bed of an arbor (or hydraulic) press. Use a new sleeve to force the old one out. After the new liner is properly installed, a 1/4‐inch (6,4 mm) diameter hole must be drilled through it to permit the flow of lubricant to the seal assembly. Be careful to center the drill in the threaded grease piping hole and not damage the threads. Deburr the hole from the in side of the seal liner after drilling.

Slide the seal plate assembly over the impeller shaft (22) and temporarily secure the seal plate to


Figure 3. Seal Assembly the pedestal (15) using two capscrews and nuts

(3/8-16 UNC x 1-1/2 inch long, not supplied).

Slide the inboard rotating element into the lubri cated seal liner with the chamfered side toward the shaft shoulder.

Sub-assemble the inboard stationary element, packing ring and stationary washer. Press this unit into the lubricated seal liner until the seal faces contact. A push tube cut from a length of plastic pipe would aid this installation. The I.D. of the tube should be approximately the same size as the I.D.

of the seal spring.

Slide the spacer sleeve onto the shaft until it seats against the inboard rotating element and install the seal spring.

Subassemble the outboard stationary element, packing ring and stationary washer. Press this unit into the lubricated seal liner. Install the outboard ro tating element with the chamfered side toward the impeller .

PAGE E - 9

OM-00621 10 SERIES

Lubricate the seal assembly as indicated in LU

BRICATION after the impeller has been installed.

Impeller Installation and Adjustment

Inspect the impeller and replace it if cracked or badly worn. Install the same thickness of impeller shims (32) as previously removed, and screw the impeller onto the shaft until tight.

A clearance of .020 to .040 inch (0,51 to 1,02 mm) between the impeller and the seal plate is neces sary for maximum pump efficiency. Measure this clearance and add or remove impeller shims until this clearance is reached.

NOTE

Be sure the seal plate is tight against the pedestal while measuring this clearance.

Install the automatic grease cup and piping (6, 7 and 8) in the seal plate. After the pump casing is installed, lubricate the seal assembly as indicated in LUBRICATION .

After the face clearance has been set, tighten the nuts (30) securing the pump casing to the pedes tal.

Secure the pump casing to the base with the pre viously removed hardware. Be sure to reinstall any leveling shims used under the mounting feet of the pump casing.

Back Cover Installation

If the wear plate (33) was removed for replace ment, secure it to the cover plate (43) using the at taching hardware (36 and 37) at this time. The wear plate must be concentric to prevent binding when the back cover is installed.

Clean any scale or debris from the contacting sur faces on the pump casing that might prevent a good seal with the back cover. Replace the back cover gasket (39) and slide the back cover assem bly into the pump casing. Be sure the wear plate does not bind against the impeller.

NOTE

To ease future disassembly, apply a film of grease or `Never‐Seez' on the back cover shoulder, or any surface that contacts the pump casing. This action will reduce rust and scale build‐up.

Pump Casing Installation

Remove the hardware temporarily securing the seal plate to the pedestal. Install the same thick ness of pump casing gaskets (31) as previously re moved. Secure the pump casing (1) to the seal plate and pedestal with the nuts (30). Do not fully tighten the nuts at this time.

NOTE

The back cover assembly (40) must be in place to adjust the impeller face clearance.

A clearance of .010 to .020 inch (0,25 to 0,51 mm) between the impeller and the wear plate (33) is also recommended for maximum pump efficiency. Set this clearance by adding or removing gaskets in the pump casing gasket set (31) until the impeller scrapes against the wear plate when the shaft is turned by hand. After the impeller scrapes, add ap proximately .010 inch (0,25 mm) of gaskets.

PAGE E - 10

Secure the back cover assembly by installing the clamp bar (45) and tightening the clamp bar screw

(46). Do not over‐tighten the clamp bar screw; it should be just tight enough to seal the back cover shoulder.

Suction Check Valve Installation

Inspect components of the check valve assembly

(51) and replace as required. If separated at disas sembly, assemble the check valve weights (53 and

56) to the check valve gasket (52) with the hard ware (54 and 55).

Position the check valve assembly in the suction port with the large weight toward the inside of the pump casing. Install the suction flange (58) and se cure with the hardware (49 and 50). Check the op eration of the check valve to ensure proper seating and free movement.


10 SERIES OM-00621

Final Pump Assembly

Be sure the pump and power source are securely mounted to the base. Reconnect the power source to the pump.

Install the suction and discharge lines and open all valves. Make certain that all piping connections are tight, properly supported and secure.

If a lifting eye was used to move the pump casing, be sure to remove the lifting eye from the pump casing.

Be sure the pump and power source have been properly lubricated, see LUBRICATION .

POSITION

WHEN

EMPTY

Fill the pump casing with clean liquid. Reinstall the fill plug (5) and tighten it.

Refer to OPERATION , Section C, before putting the pump back into service.

LUBRICATION

Seal Assembly


Fill the grease cup (8) through the grease fitting with No. 2 lithium base grease until grease es capes from the relief hole. Turn the grease cup arm counterclockwise until it is at the top of the stem; this will release the spring to apply grease to the seal (see Figure 4).

POSITION

FOR

FILLING

POSITION

WHEN

IN USE

GREASE

FITTING

CROSS

ARM

RELIEF

HOLE

Bearings

Figure 4. Automatic Lubricating Grease Cup the sight gauge. Change the oil more frequently if the pump is operated continuously or installed in an environment with rapid temperature change.

The pedestal was fully lubricated when shipped from the factory. Check the oil level regularly through the sight gauge (26) and maintain it at the middle of the gauge. When lubrication is required, add SAE No. 30 non‐detergent oil through the hole for the air vent (14). Do not over‐lubricate. Over‐lu brication can cause the bearings to over‐heat, re sulting in premature bearing failure.

Under normal conditions, drain the pedestal once each year and refill with clean oil to the middle of

Monitor the condition of the bearing lubri cant regularly for evidence of rust or mois ture condensation. This is especially im portant in areas where variable hot and cold temperatures are common.


OM-00621

For cold weather operation, consult the factory or a lubricant supplier for the recommended grade of oil.

Power Source

Consult the literature supplied with the power source, or contact your local power source repre sentative.

10 SERIES

PAGE E - 12 MAINTENANCE & REPAIR

For Warranty Information, Please Visit www.grpumps.com/warranty or call:

U.S.: 419-755-1280

Canada: 519-631-2870

International: +1-419-755-1352

GORMAN‐RUPP PUMPS

Gorman-Rupp Pumps 13A2-B 710664 and up Installation, Operation, And Maintenance Manual With Parts List 36 Pages

Gorman-Rupp Pumps 13A2-B 710664 and up Installation, Operation, And Maintenance Manual With Parts List

INSTALLATION, OPERATION,

AND MAINTENANCE MANUAL

WITH PARTS LIST

10 SERIES PUMP

MODEL

13A2‐B