GORMAN-RUPP PUMPS PA Seris Installation, Operation And Maintenance Manual Download Page 4

Page: 4 / 40

TABLE OF CONTENTS

(continued)

PARTS LISTS:

Pump Model

PAGE E - 3

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Pump Endl Assembly

PAGE E - 5

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Priming Chamber Assembly

PAGE E - 8

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Impeller Assembly Machining Tolerances

PAGE E - 9

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PUMP AND SEAL DISASSEMBLY AND REASSEMBLY

PAGE E - 10

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Priming Chamber Removal And Disassembly

PAGE E - 10

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Discharge Check Valve Removal and Disassembly

PAGE E - 11

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Suction Head And Wear Ring Removal

PAGE E - 11

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Pump Casing Removal

PAGE E - 11

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Impeller Removal

PAGE E - 12

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Seal Removal

PAGE E - 12

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Pedestal Assembly Removal

PAGE E - 12

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Shaft and Bearing Removal and Disassembly

PAGE E - 12

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Bearing Cleaning And Inspection

PAGE E - 13

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Shaft and Bearing Reassembly and Installation

PAGE E - 13

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Seal Reassembly and Installation

PAGE E - 14

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Impeller Installation

PAGE E - 17

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Pump Casing Installation

PAGE E - 18

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Suction Head And Wear Ring Installation

PAGE E - 18

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Discharge Check Valve Assembly and Installation

PAGE E - 18

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Priming Chamber Assembly And Installation

PAGE E - 18

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LUBRICATION

PAGE E - 19

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Seal Assembly

PAGE E - 19

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Bearings

PAGE E - 19

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Summary of Contents for PA Seris

Page 1: ...OM 06575 05 July 24 2012 GORMAN RUPP PUMPS www grpumps com 2012 Gorman Rupp Pumps Printed in U S A INSTALLATION OPERATION AND MAINTENANCE MANUAL WITH PARTS LIST PA SERIES PUMP MODEL PA12A60 B...

Page 2: ...rial 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 in...

Page 3: ...HARGE LINES PAGE B 4 Siphoning PAGE B 4 Valves PAGE B 4 ALIGNMENT PAGE B 4 Coupled Drives PAGE B 5 Drive Belts PAGE B 5 DRIVE BELT TENSIONING PAGE B 6 General Rules of Tensioning PAGE B 6 COLD WEATHER...

Page 4: ...emoval PAGE E 11 Impeller Removal PAGE E 12 Seal Removal PAGE E 12 Pedestal Assembly Removal PAGE E 12 Shaft and Bearing Removal and Disassembly PAGE E 12 Bearing Cleaning And Inspection PAGE E 13 Sha...

Page 5: ...this manual or in other lit erature accompanying the 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 41...

Page 6: ...pump This pump is designed to handle most non volatile non flammable liquids containing specified entrained solids Do not attempt to pump volatile corro sive or flammable materials which may damage th...

Page 7: ...s will deteriorate and the liquid could come to a boil build pressure and cause the pump casing to rupture or explode Do not attempt to disengage any part of an overheated pump unit Vapor pres sure wi...

Page 8: ...re at mating sur faces c Carefully read all tags decals and markings on the pump assembly and perform all duties indicated Note that the pump shaft rotates in the required direction Only operate this...

Page 9: ...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 co...

Page 10: ...to 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 a...

Page 11: ...hrottling valve be installed in the discharge line to protect the pump from excessive shock pres sure and reverse rotation when it is stopped If the application involves a high discharge head graduall...

Page 12: ...ds are the same distance apart at all points see Fig ure 2 Figure 2 Aligning Spider Type Couplings Figure 3 Aligning Non Spider Type Couplings Align non spider type couplings by using a feeler gauge o...

Page 13: ...as a facto ry installed option or as a retrofit kit for most mod els consult the factory This method pumps heat ed liquid from the engine cooling system through the priming chamber to heat the chamber...

Page 14: ...lectrician interchange any two of the three phase wires to change direction If rotation is incorrect on a single phase motor consult the liter ature supplied with the motor for specific instruc tions...

Page 15: ...y Strainer Check Check the strainer regularly and clean it as neces sary The strainer should also be checked if pump flow rate begins to drop Monitor and record the vacuum suction gauge readings regul...

Page 16: ...f the pump will be idle for more than a few hours or if it has been pumping liquids containing a large amount of solids drain the pump and flush it thoroughly with clean water To prevent large solids...

Page 17: ...rrect leak Lining of suction hose collapsed Replace suction hose Leaking or worn seal or pump gasket Check pump vacuum Replace leaking or worn seal or gasket Air compressor damaged or belts bro ken Ch...

Page 18: ...ble check and replace bearing s as required Liquid solution too thick Open discharge valve fully to in crease flow rate and run engine at maximum governed speed Discharge flow too slow Dilute if possi...

Page 19: ...e 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 Rup...

Page 20: ...mpeller Clearance Seal Plate I Check Valve I Pressure Relief Valve If So Equipped C Pump and Driver Alignment I Shaft Deflection I Bearings I Bearing Housing I Piping I Driver Lubrication See Mfgr s L...

Page 21: ...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 If...

Page 22: ...OM 06575 PA SERIES MAINTENANCE REPAIR PAGE E 2 PARTSPAGE ILLUSTRATION 6 7 12 13 15 14 17 16 18 11 10 20 19 2 1 3 4 3 5 6 7 9 8 Figure 1 PA12A60 B Pump Model Assembly...

Page 23: ...WASHER J14 15991 24 7 HEX NUT D14 15991 24 8 CHECK VALVE 12 26642 128 1 FLAPPER 26688 003 1 GASKET 26688 004 1 O RING 25152 469 1 9 DRAIN VALVE ASSY 46346 262 1 10 PIPE PLUG P04 15079 1 11 12 SPOOL 38...

Page 24: ...OM 06575 PA SERIES MAINTENANCE REPAIR PAGE E 4 ILLUSTRATION SEE FIG 3 Figure 2 Pump End Assembly...

Page 25: ...29 BEARING CAP GASKET 4184G 18000 1 30 BALL BEARING 23413 015 2 31 KEY N1016 15990 1 32 IMPELLER SHAFT 38512 522 17040 1 33 KEY N0809 15990 1 34 ROLLER BEARING 23528 005 1 35 BEARING CAP 38322 425 100...

Page 26: ...OM 06575 PA SERIES MAINTENANCE REPAIR PAGE E 6 ILLUSTRATION SEE FIG 2 Figure 3 Pump End Assembly Cont d...

Page 27: ...5 1 29 BEARING CAP GASKET 4184G 18000 1 30 BALL BEARING 23413 015 2 31 KEY N1016 15990 1 32 IMPELLER SHAFT 38512 522 17040 1 33 KEY N0809 15990 1 34 ROLLER BEARING 23528 005 1 35 BEARING CAP 38322 425...

Page 28: ...LIST ITEM NO PART NAME PART NUMBER QTY 1 PRIMING VALVE 26664 007 1 ORIFICE BUTTON 26688 021 1 2 HEX HD CAPSCREW B0806 15991 8 3 LOCKWASHER J08 15991 8 4 PRIMING VALVE GASKET 38683 657 19060 1 5 PRIMIN...

Page 29: ...OM 06575 PA SERIES MAINTENANCE REPAIR PAGE E 9 ILLUSTRATION WEAR RING IMPELLER NOTE UNLESS OTHERWISE SPECIFIED MACHINED SURFACES TO BE 125 RMS Figure 5 Impeller Assembly Machining Tolerances...

Page 30: ...n 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 Before attempting to o...

Page 31: ...alve cap and remove the flap per and gasket Suction Head And Wear Ring Removal Figure 2 Unless replacement of the spool gasket 3 Figure 1 is required the suction head 49 may be re moved without separa...

Page 32: ...ring to the impeller Use caution not to damage the impeller Pry or carefully grind the wear ring off the impeller Seal Removal Figures 2 and 6 This pump is designed with two seals a primary mechanica...

Page 33: ...ection Figure 3 Clean the bearing housing shaft and all compo nent parts except the bearings with a soft cloth soaked in cleaning solvent Inspect the parts for wear or damage and replace as necessary...

Page 34: ...een installed and allowed to cool check to ensure that they have not moved away from the shaft shoulders in shrinking If movement has occurred use a suitably sized sleeve and a press to reposition the...

Page 35: ...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 finishe...

Page 36: ...INTENANCE REPAIR PAGE E 16 IMPELLER SHAFT SPRING SEAL PLATE RETAINER O RINGS BELLOWS ROTATING ELEMENT STATIONARY SEAT SLEEVE O RING IMPELLER STATIONARY ELEMENT SHAFT SLEEVE SHAFT KEY IMPELLER SHIMS Fi...

Page 37: ...es machining and dynamic balancing the im peller assembly after the wear ring is welded to the impeller Failure to properly install the wear ring and machine and bal ance the impeller assembly can res...

Page 38: ...to service Discharge Check Valve Assembly and Installation Figure 1 The flapper and gasket are the only serviceable parts of the check valve If the flapper requires re placement remove the hardware se...

Page 39: ...t of the gauges When lubrication is re quired remove the vented plug 19 and add SAE No 30 non detergent oil through the opening Clean and reinstall the vented plug Do not over lu bricate Over lubricat...

Page 40: ...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...

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