GORMAN-RUPP PUMPS GHC SERIES Installation, Operation And Maintenance Manual
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GORMAN-RUPP PUMPS GHC SERIES Installation, Operation And Maintenance Manual

Rotary gear pumps, iron and steel pumps
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TVXY
OM ---04352---01
September 2, 1996
INSTALLATION, OPERATION,
AND MAINTENANCE MANUAL
ROTARY GEAR PUMPS
MODELS
GHC SERIES
IRON AND STEEL
PUMPS
THE GORMAN-RUPP COMPANY MANSFIELD, OHIO
GORMAN-RUPP OF CANADA LIMITED ST. THOMAS, ONTARIO, CANADA
Printed in U.S.A.
Copyright by the Gorman-Rupp Company

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  • Page 1 OM ---04352---01 September 2, 1996 INSTALLATION, OPERATION, AND MAINTENANCE MANUAL ROTARY GEAR PUMPS MODELS GHC SERIES IRON AND STEEL PUMPS THE GORMAN-RUPP COMPANY MANSFIELD, OHIO GORMAN-RUPP OF CANADA LIMITED ST. THOMAS, ONTARIO, CANADA Printed in U.S.A. Copyright by the Gorman-Rupp Company...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS INTRODUCTION ........... PAGE I --- 1 SAFETY --- SECTION A .
  • Page 3 TABLE OF CONTENTS (continued) ASSEMBLED GHC PUMP MODEL ILLUSTRATIONS ....... PAGE E---4 PUMP DISASSEMBLY .

  • Page 4: Introduction

    GHC SERIES OM -- 04352 INTRODUCTION Thank You for purchasing a Gorman-Rupp Rotary If there are any questions regarding the pump or Gear Pump. This manual is designed to help you drive unit which are not covered in this manual or...
  • Page 5 OM -- 04352 GHC SERIES The following are used to alert personnel to procedures which require special attention, to those which could damage equipment, and to those which could be dangerous to personnel: Immediate hazards which will result in Hazards or unsafe practices which COULD severe personal injury or death.

  • Page 6: Safety

    GHC SERIES OM -- 04352 SAFETY --- SECTION A covered in this manual could lead to de- This information is specific to Gorman-Rupp GHC Series Rotary Gear Pumps. It applies throughout struction of equipment, injury, or death. this manual and any manual or literature ac- companying the pump.
  • Page 7 OM -- 04352 GHC SERIES 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 An overheated pump can cause severe directions of flow. Operation without a burns and injury.

  • Page 8: Installation

    OM -- 04352 GHC SERIES INSTALLATION --- SECTION B GENERAL INFORMATION Typical Pump Model GHS 1 1/2 Review all SAFETY information in Section A. Design Port Hydraulic Construction Style Size Size Code Pumps and related equipment must be in- Design Style: Gorman-Rupp rotary gear pumps...

  • Page 9: Preinstallation Inspection

    OM -- 04352 GHC SERIES Table B-1. Theoretical Displacement If the pump will not be immediately installed, follow these procedures or damage to the pump will oc- cur. Theoretical Displacement a. Do not flush the pump. Ensure that the port...

  • Page 10: Pump Installation

    OM -- 04352 GHC SERIES Piping To flush the pump, use an approved solvent com- patible with the liquid being pumped. Make cer- Before establishing suction and discharge lines, tain that the solvent will not attack pump com- determine pump port positions and rotation. Fig- ponents, particularly seals and gaskets.

  • Page 11: Gauges

    OM -- 04352 GHC SERIES The discharge and suction lines must be inde- To prevent leakage during shutdown, install a shut- pendently supported to avoid vibration and strain off valve in the discharge line, particularly on a on the pump. For maximum pumping capacity, flooded suction application.

  • Page 12: Alignment

    OM -- 04352 GHC SERIES ALIGNMENT Make certain that power to the drive unit is disconnected before attempting to connect the pump drive; otherwise, per- sonal injury may result. Figure B-3. Aligning Non-Spider Type Coupling NOTE See ROTATION in Section C before mounting the Check parallel adjustment by laying a straightedge pump on the base.

  • Page 13: V-Belt Tensioning

    OM -- 04352 GHC SERIES Select pulleys to match the proper speed ratio; Belt Span overspeeding the pump may damage both pump and power source. Deflection 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.

  • Page 14: Electrical Connections

    OM -- 04352 GHC SERIES Table B-2. Sheave Diameter (In.) Table B-3. Sheave Diameter (Mm.) Deflection Force (Lbs.) Deflection Force (Kg.) Belt Deflection Force Belt Deflection Force Uncogged Cogged Uncogged Cogged Hy-T Belts & Torque-Flex Hy-T Belts & Torque-Flex Uncogged &...
  • Page 15 OM -- 04352 GHC SERIES alified electrician to make all electrical sphere. Install, connect, and operate connections. the motor in accordance with The Na- tional Electrical Code and all local codes. If there is a conflict between the instructions in the manual accompany-...

  • Page 16: Operation

    GHC SERIES OM -- 04352 OPERATION --- SECTION C Review all SAFETY information in Section A. Open all valves in the suction and discharge lines, and close all drain valves. Follow the instructions on all tags, labels and If your pump is equipped with a packing seal, loos- decals attached to the pump.

  • Page 17: Operation

    OM -- 04352 GHC SERIES within one minute, stop the drive unit. Do not oper- sible to heat the liquid, use heat tape and/or insula- ate the pump more than one minute without liquid tion to heat the pump. in it; dry operation will damage or destroy the High temperature bushings as well as optional pump.

  • Page 18: Leakage

    GHC SERIES OM -- 04352 Leakage If the nominal cracking pressure set at the factory must be changed, see Table E-2 and instructions in No leakage should be visible at pump mating sur- Section E - MAINTENANCE AND REPAIR. faces or at pump connections or fittings. Keep all...
  • Page 19 GHC SERIES OM -- 04352 TROUBLESHOOTING --- SECTION D Review all SAFETY information in Section A. Before attempting to open or service the pump: 1. Familiarize yourself with this manual. 2. Allow the pump to completely cool if overheated. 3. Check the temperature before open- ing any covers, plates, or plugs.
  • Page 20 OM -- 04352 GHC SERIES TROUBLESHOOTING CHART TROUBLE POSSIBLE CAUSE PROBABLE REMEDY PUMP FAILS Internal clearance too great. Check and readjust clearance if re- quired; see SETTING END CLEAR- TO PRIME OR ANCE in Maintenance and Repair, Sec- LOSES PRIME tion E.

  • Page 21: Troubleshooting

    GHC SERIES OM -- 04352 TROUBLESHOOTING CHART (Cont.) TROUBLE POSSIBLE CAUSE PROBABLE REMEDY PUMP REQUIRES Pump and/or drive mounting not Tighten mounting hardware; realign TOO MUCH secure; drive misaligned. drive. POWER (Cont.) Power source undersized. Check power requirements for applica- tion;...

  • Page 22: Preventive Maintenance

    OM -- 04352 GHC SERIES PREVENTIVE MAINTENANCE Check the thrust washer (medium duty models), idler bushing, idler pin, idler assembly, shaft bush- ing and rotor/shaft assembly at each inspection. Since pump applications are seldom identical, and Wear patterns should be uniform, without evi- pump wear is directly affected by such things as dence of deep or irregular grooves.
  • Page 23 GHC SERIES OM -- 04352 MAINTENANCE AND REPAIR --- SECTION E MAINTENANCE AND REPAIR OF THE WEARING PARTS OF THE PUMP WILL MAINTAIN PEAK OPERATING PERFORMANCE. Pump Model Your pump model number and serial number are shown on the Parts List, furnished as a separate document with this manual.
  • Page 24 OM -- 04352 GHC SERIES Shown: Standard Model With 180 Ports and Housing-Mounted Relief Valve. Also Available With 90 Ports And/Or Head-Mounted Relief Valve. Coverplate Kit Replaces Either Relief Valve When Not Used. NOTE: Refer to Seal Appendix, Section F for details of the seal assembly and related components.
  • Page 25 GHC SERIES OM -- 04352 PARTS KEY FOR FIGURE E-1 Note: Item numbers cross reference to specific part numbers on the separate Parts List. ITEM PART NAME ITEM PART NAME HEAD KIT ROTOR ADJUSTING SLEEVE KIT ---HEAD ASSEMBLY ---ROTOR ADJUSTING SLEEVE ASSY...
  • Page 26 Each version shown with Mechanical Seal. All versions available with Lip Seal as standard. All versions available with or without Foot Bracket. All versions available with Motor Adaptor. GHC Series Standard Pump 180_ PORTS, HOUSING-MOUNTED RELIEF VALVE, FOOT BRACKET GHC Series Optional Pump...
  • Page 27 GHC SERIES OM -- 04352 PUMP DISASSEMBLY AND and/or maintenance personnel to en- sure that applications and/or mainte- REASSEMBLY nance procedures not addressed in this manual are performed only after estab- Review all SAFETY information in Section A. lishing that neither personal safety nor...
  • Page 28 OM -- 04352 GHC SERIES Rotor Adjusting Sleeve (07) Coverplate Kit (11) (Figures E-1 and E-3) Before attempting to remove the bearing locknut The coverplate kit may be mounted on either the (03C), loosen the socket head setscrews (GA) se- head assembly or the housing assembly.
  • Page 29 GHC SERIES OM -- 04352 separate the assemblies. Remove and discard the gasket (06B) or O-ring (O). NOTE Use caution when handling the idler (02A) The shaft bushing (06AE) may be damaged during removal. Do not remove the throttle bushing unless and the rotor shaft assembly (03A).
  • Page 30 OM -- 04352 GHC SERIES Failure to do so could damage the bearing hole adjacent to the discharge port will have a small pipe plug under the larger, outer pipe plug. or its mating surfaces. This plug must be removed to change rotation.
  • Page 31 GHC SERIES OM -- 04352 flammable. Use them only in a well ven- BALANCE HOUSING tilated area free from flame, sparks, and HOLE AT 12 THROTTLE O’CLOCK excessive heat. Read and follow all pre- BUSHING cautions printed on solvent containers.
  • Page 32 OM -- 04352 GHC SERIES Rotor Adjusting Sleeve (07) with the chamfer side toward the head and the milled flat side facing the crescent. (If the pin is Clean the rotor adjusting sleeve and all component stepped, position it with the large chamfered end parts as described in Cleaning and Inspection.
  • Page 33 GHC SERIES OM -- 04352 Tighten the rotor adjusting sleeve assembly (07A) scrapes against the head, back off the rotor adjust- in the backhead assembly (06A) until the rotor bot- ing sleeve until rotation is free. toms against the head, and install the bearing lock- washer (03B) and locknut (03C) as previously de- Max.

  • Page 34: Parts Key

    OM -- 04352 GHC SERIES PARTS KEY 10AA VALVE BODY 10AB WARNING PLATE 10AD POPPET 10AE SPRING 10AF SPRING (OPTIONAL) 10AH SPRING GUIDE 10AJ GASKET (OPTIONAL) 10AK BONNET 10AM CAPSCREW 10AN CAP 10AP CAP GSKT (OPTIONAL) 10AR TAG (OPTIONAL) JAM NUT...
  • Page 35 GHC SERIES OM -- 04352 SINGLE CRACKING DIMENSION DOUBLE CRACKING DIMENSION PUMP SPRING PRESSURE “A” (INCHES) SPRING PRESSURE “A” (INCHES) HYDRAULIC OPTION CODE (PSI) Fig. E-7) OPTION CODE (PSI) Fig. E-7) SIZE** 100 MIN. .60 FULLY OUT 50 MIN. .60 FULLY OUT 130 MAX.
  • Page 36 OM -- 04352 GHC SERIES SEAL APPENDIX --- SECTION F PARTS KEY ROTOR/SHAFT ASSY 03B BRG LOCKWASHER 03C BRG LOCK NUT SHAFT KEY SEAL ASSEMBLY 06A BACKHEAD ASSY PIPE PLUG 07AA ROTOR ADJ SLEEVE 07AB SEAT SLEEVE 07AC BALL BEARING...
  • Page 37 GHC SERIES OM -- 04352 Seal Removal (Figures E-1 and F-1) See PUMP DISASSEMBLY and disassemble the Seal components must be kept clean. pump up to and including the Rotor Adjusting Handle seal parts with extreme caution to Sleeve (07). As the rotor adjusting sleeve (07AA) is prevent damage.
  • Page 38 OM -- 04352 GHC SERIES SEAL APPENDIX --- SECTION F PARTS KEY 03A ROTOR/SHAFT ASSY 03B BRG LOCKWASHER 03C BRG LOCKNUT SHAFT KEY LIP SEAL 06A BACKHEAD ASSY PIPE PLUG 07AA ROTOR ADJ SLEEVE 07AB SEAT SLEEVE 07AC BALL BEARING...
  • Page 39 GHC SERIES OM -- 04352 Seal Removal (Figures E-1 and F-2) Most cleaning solvents are toxic and See PUMP DISASSEMBLY and disassemble the pump up to and including the Rotor Adjusting flammable. Use them only in a well ven- Sleeve (07). jAs the rotor adjusting sleeve (07AA)
  • Page 40 OM -- 04352 GHC SERIES SEAL APPENDIX --- SECTION F PARTS KEY 03A ROTOR/SHAFT ASSY 03B BRG LOCKWASHER 03C BRG LOCKNUT SHAFT KEY SEAL ASSY 06A BACKHEAD ASSY PIPE PLUG 07AA ROTOR ADJ SLEEVE 07AB SEAT SLEEVE 07AC BALL BEARING...
  • Page 41 GHC SERIES OM -- 04352 excessive heat. Read and follow all pre- Seal Removal cautions printed on solvent containers. (Figures E-1 and F-3) The seal is not normally reused because wear pat- See PUMP DISASSEMBLY and disassemble the terns on the finished faces cannot be realigned pump up to and including the Rotor Adjusting during reassembly.
  • Page 42 OM -- 04352 GHC SERIES Place a clean tissue over the sealing face of the ro- Oil the O-ring (O) and install it in the groove in the tating portion of the seal, and slide this rotating seat sleeve (07AB). Position the sleeve over the subassembly onto the shaft.
  • Page 43 GHC SERIES OM -- 04352 SEAL APPENDIX --- SECTION F PARTS KEY 03A ROTOR/SHAFT ASSY 03B BRG LOCKWASHER 03C BRG LOCKNUT SHAFT KEY SEAL ASSY 06A BACKHEAD ASSY 06AK INB ELMNT SEAT SLV PIPE PLUG 07AA ROTOR ADJ SLEEVE 07AB SEAT SLEEVE...
  • Page 44 OM -- 04352 GHC SERIES Seal Removal sleeve until fully seated. (Figures E-1 and F-4) Clean the seal cavity and shaft with a cloth soaked See PUMP DISASSEMBLY and disassemble the in fresh cleaning solvent. pump up to and including the Rotor Adjusting Sleeve (07).
  • Page 45 GHC SERIES OM -- 04352 assembly (03A). Position the inboard rotating por- itself. If so, screw the connector (13E) into the dis- tion of the seal on the shaft with the sealing face to- charge gauge port on the pump housing. The res- ward the pump end of the shaft.
  • Page 46 OM -- 04352 GHC SERIES SEAL APPENDIX --- SECTION F PARTS KEY 03A ROTOR/SHAFT ASSY 03B BRG LOCKWASHER 03C BRG LOCKNUT SHAFT KEY CART SEAL ASSY 05A SHAFT SLEEVE O-RING 05H STATIONARY SEAT 05N SEAT SLEEVE 06A BACKHEAD ASSY PIPE PLUG...
  • Page 47 GHC SERIES OM -- 04352 flammable. Use them only in a well ven- Seal Removal tilated area free from flame, sparks, and (Figures E-1 and F-5) excessive heat. Read and follow all pre- cautions printed on solvent containers. See PUMP DISASSEMBLY and disassemble the...
  • Page 48 OM -- 04352 GHC SERIES SEAL APPENDIX --- SECTION F PARTS KEY ROTOR/SHAFT ASSY 03B BRG LOCKWASHER 03C BRG LOCK NUT SHAFT KEY BALANCED SEAL ASSEMBLY 05A SHAFT SLEEVE 06A BACKHEAD ASSY PIPE PLUG 07AA ROTOR ADJ SLEEVE 07AB SEAT SLEEVE...
  • Page 49 GHC SERIES OM -- 04352 Seal Removal (Figures E-1 and F-6) See PUMP DISASSEMBLY and disassemble the Seal components must be kept clean. pump up to and including the Rotor Adjusting Handle seal parts with extreme caution to Sleeve (07). As the rotor adjusting sleeve (07AA) is prevent damage.
  • Page 50 OM -- 04352 GHC SERIES SEAL APPENDIX --- SECTION F PARTS KEY ROTOR/SHAFT ASSY 03B BRG LOCKWASHER 03C BRG LOCK NUT SHAFT KEY SEAL ASSEMBLY 06A BACKHEAD ASSY PIPE PLUG 07AA ROTOR ADJ SLEEVE 07AB SEAT SLEEVE 07AC BALL BEARING...
  • Page 51 GHC SERIES OM -- 04352 Seal Removal The seal is not normally reused because wear pat- terns on the finished faces cannot be realigned (Figures E-1 and F-7) during reassembly. This could result in premature failure. If necessary to reuse an old seal in an emer-...
  • Page 52 OM -- 04352 GHC SERIES Oil the O-ring (O) and install it in the groove in the extension onto the sleeve until fully seated. seat sleeve (07AB). Press the seat sleeve onto the Lubricate the stationary element O-ring and posi-...
  • Page 53 For U.S. and International Warranty Information, Please Visit www.grpumps.com/warranty or call: U.S.: 419−755−1280 International: +1−419−755−1352 For Canadian Warranty Information, Please Visit www.grcanada.com/warranty or call: 519−631−2870 THE GORMAN-RUPP COMPANY D MANSFIELD, OHIO GORMAN-RUPP OF CANADA LIMITED ST. THOMAS, ONTARIO, CANADA...

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