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ACE
OM‐04728‐01
September 11, 1997
Rev. B 07‐10‐2013
INSTALLATION, OPERATION,
AND MAINTENANCE MANUAL
WITH PARTS LIST
0 SERIES PUMP
MODEL
03H1-GX390
THE GORMAN‐RUPP COMPANY D MANSFIELD, OHIO
www.grpumps.com
D
GORMAN‐RUPP OF CANADA LIMITED
ST. THOMAS, ONTARIO, CANADA
Printed in U.S.A.
e
1997 The Gorman‐Rupp Company

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  • Page 1 OM‐04728‐01 September 11, 1997 Rev. B 07‐10‐2013 INSTALLATION, OPERATION, AND MAINTENANCE MANUAL WITH PARTS LIST 0 SERIES PUMP MODEL 03H1-GX390 THE GORMAN‐RUPP COMPANY D MANSFIELD, OHIO www.grpumps.com GORMAN‐RUPP OF CANADA LIMITED ST. THOMAS, ONTARIO, CANADA Printed in U.S.A. 1997 The Gorman‐Rupp Company...
  • Page 2 Register your new Gorman‐Rupp pump online at www.grpumps.com Valid serial number and e‐mail address required. The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. RECORD YOUR PUMP MODEL AND SERIAL NUMBER Please record your pump model and serial number in the spaces provided below.
  • Page 3: Table Of Contents

    TABLE OF CONTENTS INTRODUCTION ..........PAGE I - 1 SAFETY ‐...
  • Page 4 TABLE OF CONTENTS (continued) Pump Model ............PAGE E - 5 Pump End Assembly .
  • Page 5: Introduction

    This pump is an 0 Series, self‐priming centrifugal model, with a closed impeller. The pump is de­ signed for handling most non‐volatile, non‐flam­...
  • Page 6: Safety - Section A

    0 SERIES OM-04728 SAFETY - SECTION A This information applies to 0 Series en­ containing specified entrained solids. gine driven pumps. Refer to the manual Do not attempt to pump volatile, corro­ accompanying the engine before at­ sive, or flammable liquids which may tempting to begin operation.
  • Page 7 OM-04728 0 SERIES When operating internal combustion engines in an enclosed area, make cer­ tain that exhaust fumes are piped to the outside. These fumes contain carbon Overheated pumps can cause severe monoxide, a deadly gas that is color­ burns and injuries. If overheating of the less, tasteless, and odorless.
  • Page 8: Installation - Section B

    0 SERIES OM-04728 INSTALLATION - SECTION B Review all SAFETY information in Section A. specific application. Since the pressure supplied to the pump is critical to performance and safety, Since pump installations are seldom identical, this be sure to limit the incoming pressure to 50% of the...
  • Page 9: Positioning Pump

    OM-04728 0 SERIES ing, check for loose hardware at mating sur­ tag on the unit packaging for the actual weight, and faces. use lifting equipment with appropriate capacity. Drain the pump and remove all customer‐installed c. Carefully read all tags, decals, and markings...
  • Page 10: Line Configuration

    0 SERIES OM-04728 compatible with the liquid being pumped. If hose is Fittings used in suction lines, it must be the rigid‐wall, rein­ Suction lines should be the same size as the pump forced type to prevent collapse under suction. Us­...
  • Page 11: Suction Line Positioning

    OM-04728 0 SERIES If it is necessary to position inflow close to the suc­ Suction Line Positioning tion inlet, install a baffle between the inflow and the The depth of submergence of the suction line is suction inlet at a distance 1‐1/2 times the diameter critical to efficient pump operation.
  • Page 12: Bypass Lines

    0 SERIES OM-04728 With high discharge heads, it is recommended that Bypass Lines 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 If a system check valve is used due to high dis­...
  • Page 13: Operation - Section C

    OM-04728 0 SERIES OPERATION - SECTION C Review all SAFETY information in Section A. not prime when dry. Extended operation of a dry pump will destroy the seal assembly. Follow the instructions on all tags, labels and Add liquid to the pump casing when: decals attached to the pump.
  • Page 14: Lines With A Bypass

    OM-04728 0 SERIES Lines With a Bypass pump and allow it to cool before servicing it. Refill the pump casing with cool liquid. 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.
  • Page 15: Stopping

    OM-04728 0 SERIES After stopping the pump, disconnect the spark STOPPING plug wire to ensure that the pump will remain inop­ erative. Never halt the flow of liquid suddenly. If the liquid being pumped is stopped abruptly, damaging Cold Weather Preservation shock waves can be transmitted to the pump and piping system.
  • Page 16: Troubleshooting - Section D

    0 SERIES OM-04728 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. Shut down the engine and discon­ nect the spark plug wire to ensure that the pump will remain inopera­...
  • Page 17 OM-04728 80 SERIES TROUBLE POSSIBLE CAUSE PROBABLE REMEDY PUMP STOPS OR Air leak in suction line. Correct leak. FAILS TO DELIVER Lining of suction hose collapsed. Replace suction hose. RATED FLOW OR PRESSURE Leaking or worn seal or pump gasket. Check pump vacuum.
  • Page 18 0 SERIES OM-04728 equipped) between regularly scheduled inspec­ PREVENTIVE MAINTENANCE tions can indicate problems that can be corrected Since pump applications are seldom identical, and before system damage or catastrophic failure oc­ pump wear is directly affected by such things as curs.
  • Page 19: Pump Maintenance And Repair - Section E

    OM-04728 0 SERIES 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 03H1-GX390 Based on 70_ F (21_ C) clear water at sea level Contact the Gorman‐Rupp Company to verify per­...
  • Page 20 OM-04728 0 SERIES SECTION DRAWING PARTS PAGE Figure 1. Pump Model 03H1-GX390 PAGE E - 2 MAINTENANCE & REPAIR...
  • Page 21: Parts List: Pump Model

    OM-04728 0 SERIES PARTS LIST Pump Model 03H1-GX390 (From S/N 1178614 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 PART...
  • Page 22 OM-04728 0 SERIES SECTION DRAWING Figure 2. Pump End Assembly 03H1-(GX390) PPO PAGE E - 4 MAINTENANCE & REPAIR...
  • Page 23 OM-04728 0 SERIES PARTS LIST Pump End Assembly 03H1-(GX390) PPO ITEM PART MAT'L PART NAME NUMBER CODE PUMP CASING See Note Below IMPELLER 8251B 13010 SEAL ASSEMBLY 25271-192 DISCHARGE STICKER 6588BJ PRIMING STICKER 6588AH FILL PLUG ASSY 48271-065 DISCHARGE FLANGE...
  • Page 24 OM-04728 0 SERIES PUMP AND SEAL DISASSEMBLY AND REASSEMBLY Before attempting to open or service the pump: Review all SAFETY information in Section A. 1. Familiarize yourself with this man­ ual. 2. Shut down the engine and discon­ Follow the instructions on all tags, label and de­...
  • Page 25 0 SERIES OM-04728 Remove the nuts (16) and separate the pump cas­ securing the intermediate to the engine and sliding ing and casing gasket set (14) from the intermedi­ the intermediate and stationary portion of the seal ate. Tie and tag the gaskets, or measure and re­...
  • Page 26 OM-04728 0 SERIES Wipe lightly in a concentric pattern to avoid If a replacement seal is being used, remove it from scratching the faces. the container and inspect the precision finished faces to ensure that they are free of any foreign matter.
  • Page 27 0 SERIES OM-04728 not to damage the stationary seat on the shaft shims (12) as previously removed, and screw the threads. impeller onto the shaft until tight. NOTE Pump Casing and Wear Ring Installation If the intermediate was not separated from the en­...
  • Page 28 OM-04728 0 SERIES Pump Installation Refer to OPERATION, Section C, before putting the pump back into service. (Figure 1) LUBRICATION Secure the pump (1) to the base (4) with the pre­ viously removed hardware. Be sure to install any leveling shims used under the casing mounting Seal Assembly feet.
  • Page 29 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...

This manual is also suitable for:

03h1-gx390

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