Related Manuals for GORMAN-RUPP PUMPS GMC Series
Summary of Contents for GORMAN-RUPP PUMPS GMC Series
- Page 1 OM-04384-05 March 18, 2021 INSTALLATION, OPERATION, AND MAINTENANCE MANUAL ROTARY GEAR PUMPS MODELS GMC SERIES IRON PUMPS Construction Code GORMAN‐RUPP PUMPS www.grpumps.com 2021 Gorman‐Rupp Pumps Printed in U.S.A.
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Page 2: Table Of Contents
TABLE OF CONTENTS INTRODUCTION ........... PAGE I - 1 SAFETY - SECTION A . - Page 3 TABLE OF CONTENTS (continued) Coverplate Kit (11) ............PAGE E-5 Head/Idler Kit (01 and 02) .
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Page 4: Introduction
GMC SERIES OM-04384 INTRODUCTION Thank You for purchasing a Gorman‐Rupp pump. HAZARD AND INSTRUCTION Read this manual carefully to learn how to safely DEFINITIONS install and operate your pump. Failure to do so could result in personal injury or damage to the The following are used to alert maintenance per... -
Page 5: Safety - Section A
GMC SERIES OM-04384 SAFETY - SECTION A This information is specific to Gorman‐Rupp GMC covered in this manual could lead to de Series Rotary Gear Pumps. It applies throughout struction of equipment, injury, or death. this manual and any manual or literature ac... - Page 6 OM-04384 GMC SERIES damage to the equipment and serious injury to personnel. An overheated pump can cause severe burns and injury. If overheating occurs: Never operate the pump without a pres 1. Stop the pump immediately. sure relief valve installed on the pump 2.
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Page 7: Installation - Section B
GMC SERIES OM-04384 INSTALLATION - SECTION B Review all SAFETY information in Section A. Typical Pump Model GHS 1 1/2 Design Port Hydraulic Construction Style Size Size Code Pumps and related equipment must be in stalled and operated according to all na... -
Page 8: Preinstallation Inspection
OM-04384 GMC SERIES Table B‐1. Theoretical Displacement storage before installation is essential to prevent damage to the pump. Theoretical Displacement If the pump will not be immediately installed, follow Hydraulic Per Revolution these procedures or damage to the pump will oc... -
Page 9: Pump Installation
GMC SERIES OM-04384 flammable. Use them only in a well ven charge hoses and piping must be re tilated area free from flame, sparks, and moved from the pump before lifting. Lift excessive heat. Read and follow all pre the pump or component only as high as cautions printed on solvent containers. -
Page 10: Strainers
OM-04384 GMC SERIES Gauges Housing Position Std. 180_ Pump (3-9 O'clock) Housing Mounted Relief Valve To monitor operation and assist in troubleshooting, a vacuum gauge and a pressure gauge should be OPT. Drive End Front End installed on the pump. -
Page 11: Electrical Connections
GMC SERIES OM-04384 ELECTRICAL CONNECTIONS Before connecting the motor to the incoming power, check that the electrical service available matches the pump motor requirements stamped Do not install and operate a non‐explo on the motor nameplate. sion proof motor in an explosive atmo... -
Page 12: Operation - Section C
GMC SERIES OM-04384 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 Consult the drive manufacturer's operating manu... -
Page 13: Operation
OM-04384 GMC SERIES charge gauges. If the pump does not deliver liquid sible to heat the liquid, use heat tape and/or insula within one minute, stop the drive unit. Do not oper tion to heat the pump. ate the pump more than one minute without liquid High temperature bushings as well as optional in it;... -
Page 14: Leakage
GMC SERIES OM-04384 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 line connections and fittings tight to maintain maxi... -
Page 15: Troubleshooting - Section D
GMC SERIES OM-04384 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... - Page 16 OM-04384 GMC SERIES TROUBLESHOOTING CHART TROUBLE POSSIBLE CAUSE PROBABLE REMEDY PUMP FAILS Air leak in suction line; end of suction Check and correct as required. line not submerged; foot valve blocked TO PRIME OR or jammed; insufficient liquid in sump or LOSES PRIME tank.
- Page 17 GMC SERIES OM-04384 TROUBLESHOOTING CHART (Cont.) TROUBLE POSSIBLE CAUSE PROBABLE REMEDY PUMP RE Pump and/or drive mounting not Tighten mounting hardware; realign QUIRES secure; drive misaligned. drive. TOO MUCH POWER Power source undersized. Check power requirements for applica (Cont.) tion; resize as required.
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Page 18: Preventive Maintenance
OM-04384 GMC SERIES Check the thrust washer (medium duty models), PREVENTIVE MAINTENANCE 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... - Page 19 GMC SERIES OM-04384 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 20 OM-04384 GMC SERIES 46166-067 Shown: Standard Model With 180 Ports and Housing‐Mounted Relief Valve. Also Available With 90 Ports, BackHead Adaptor, and Head‐Mounted Relief Valve. A 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.
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Page 21: Parts Key
GMC SERIES OM-04384 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 FOOT BRACKET KIT -HEAD ASSEMBLY -FOOT BRACKET 01AA -HEAD -CAPSCREW... -
Page 22: Pump Disassembly
OM-04384 GMC SERIES 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 23: Pressure Relief Valve
GMC SERIES OM-04384 suction and discharge lines to isolate the pump. 01AA Position drain pans and/or absorbant material un 11AA der and around the pump suction and discharge ports. Disconnect the suction and discharge hose/ piping. 01AB Remove the hardware securing the pump to the power source and separate the power source and pump assembly. -
Page 24: Backhead Kit Removal (06)
OM-04384 GMC SERIES removal. Do not remove the idler bushing unless re Rotor/Shaft Removal (03A) placement is required. Slide the rotor/shaft assembly (03A) out of the housing (04A). If your pump is equipped with a me Remove the assembled idler (02) and bushing chanical seal, the rotating portion of the seal as... -
Page 25: Cleaning And Inspection
GMC SERIES OM-04384 Housing Assembly (04) Cleaning and Inspection Clean and inspect the housing (04A) with a cloth soaked in fresh cleaning solvent. Replace it if badly worn or damaged. Most cleaning solvents are toxic and flammable. Use them only in a well ven... -
Page 26: Coverplate Kit (11)
OM-04384 GMC SERIES Head/Idler Kit (01 and 02) Seal Installation (05) The seal assembly (05) is available in a variety of (Figures E‐1 and E‐2) configurations. Check the Parts List furnished with your pump to identify the seal, then refer to Seal If the idler pin (01AB) was removed, apply “Loctite... -
Page 27: Relief Valve Disassembly
GMC SERIES OM-04384 ance is required, order two kits. NOTE The end clearance is established without the head gasket set (01B) in place. Std & 35B 35C & 35E Feeler Gauge Rotor Rotor Rotor Reading Trims Trims Trim Slide the head assembly into the housing assem... -
Page 28: Relief Valve Reassembly
OM-04384 GMC SERIES PARTS KEY 10AA VALVE BODY 10AB WARNING PLATE 10AD POPPET 10AE SPRING 10AF SPRING (OPTIONAL) 10AH SPRING GUIDE 10AJ BONNET O‐RING OR GASKET (OPTIONAL) 10AK BONNET 10AM CAPSCREW 10AN CAP 10AP CAP GSKT (OPTIONAL) 10AR TAG (OPTIONAL) JAM NUT 10AG SPRING GUIDE O‐RING... -
Page 29: Relief Valve Installation (10)
GMC SERIES OM-04384 DOUBLE SINGLE APPROX. APPROX. PUMP “A” “A” SPRING SPRING CRACKING CRACKING DIMENSION DIMENSION HYDRAULIC OPTION OPTION PRESSURE PRESSURE (FIGURE E-5) (FIGURE E-5) SIZE CODE CODE (PSI) (PSI) FULLY OUT DC, DE MIN. FULLY OUT GC, GF GH, GJ SCREW MAX. -
Page 30: Seal Appendix - Section Fpage
GMC SERIES OM-04384 SEAL APPENDIX - SECTION F PARTS KEY 03A ROTOR/SHAFT ASSY SEAL ASSEMBLY 06A BACKHEAD ASSY 06B GASKET SOCK HD CAPSCREW 06E THRUST WASHER BACKHEAD PIN ASSEMBLED VIEW 16707 Figure F‐1. Standard Type 21 And Optional 60A And 61J Mechanical Seals... - Page 31 OM-04384 GMC SERIES Seal Removal (Figures E‐1 and F‐1) Seal components must be kept clean. See PUMP DISASSEMBLY and disassemble the Handle seal parts with extreme caution to pump up to and including the Backhead Kit (06). prevent damage. Use care not to contami...
- Page 32 GMC SERIES OM-04384 SEAL APPENDIX - SECTION F PARTS KEY 03A ROTOR/SHAFT ASSY LIP SEAL 06A BACKHEAD ASSY 06B GASKET SOCK HD CAPSCREW 06E THRUST WASHER BACKHEAD PIN ASSEMBLED VIEW 16707 Figure F‐2. Optional (65A And 65C) Lip Seal SEAL APPENDIX...
- Page 33 OM-04384 GMC SERIES Seal Removal Clean the seal cavity and shaft with a cloth soaked in fresh cleaning solvent. (Figures E‐1 and F‐2) See PUMP DISASSEMBLY and disassemble the pump up to and including the Backhead Kit (06). Remove the backhead from the housing (04). The Most cleaning solvents are toxic and lip seal will remain inside the backhead.
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Page 34: Backhead Adaptor Appendix - Section G
GMC SERIES OM-04384 BACKHEAD ADAPTOR APPENDIX - SECTION G PARTS KEY SEAL ASSY 06A BACKHEAD 06G O‐RING BACKHEAD ADAPTOR SOC HD CAPSCREW STUD HEX NUT NOTE: Refer to O‐Ring Appendix, Section H for O‐ring identification. ASSEMBLED VIEW 16712 Figure G‐1. Backhead Adaptor... - Page 35 OM-04384 GMC SERIES Backhead Adaptor Removal Backhead Adaptor Installation (Figure G‐1) (Figure G‐1) See PUMP REASSEMBLY and reassemble the Before attempting to service the pump, shut down pump up to and including the rotating portion of the motor and take precautions to ensure that it will the seal.
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Page 36: O-Ring Appendix - Section H
GMC SERIES OM-04384 O‐RING APPENDIX - SECTION H O‐RING FAMILY NUMBERS Ref. Description Hyd. Dash No. Size Head to Housing 5‐DIGIT FAMILY O‐RING MATERIAL Backhead to Adaptor 25151-*** NEOPRENEr 06AR Seat Sleeve 25152-*** BUNA‐N to Bushing Sleeve 25154-*** VITONr 25156-***... - Page 37 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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