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GORMAN-RUPP PUMPS 81 1/4A52-B Installation, Operation, And Maintenance Manual With Parts List

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OM-01524-04
ABCDE
June 29, 2004
Rev. A 03-14-05
INSTALLATION, OPERATION,
AND MAINTENANCE MANUAL
WITH PARTS LIST
80 SERIES PUMP
MODEL
81 1/4A52−B
THE GORMAN-RUPP COMPANY D MANSFIELD, OHIO
D
GORMAN-RUPP OF CANADA LIMITED
ST. THOMAS, ONTARIO, CANADA
Printed in U.S.A.
www.gormanrupp.com
e
Copyright by the Gorman-Rupp Company

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  • Page 1 OM-01524-04 ABCDE June 29, 2004 Rev. A 03-14-05 INSTALLATION, OPERATION, AND MAINTENANCE MANUAL WITH PARTS LIST 80 SERIES PUMP MODEL 81 1/4A52−B THE GORMAN-RUPP COMPANY D MANSFIELD, OHIO GORMAN-RUPP OF CANADA LIMITED ST. THOMAS, ONTARIO, CANADA Printed in U.S.A. www.gormanrupp.com Copyright by the Gorman-Rupp Company...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS INTRODUCTION ..........PAGE I −...
  • Page 3 TABLE OF CONTENTS (continued) PUMP MAINTENANCE AND REPAIR - SECTION E ....PAGE E − 1 PERFORMANCE CURVE ........... PAGE E −...

  • Page 4: Introduction

    80 SERIES OM−01524 INTRODUCTION Thank You for purchasing a Gorman-Rupp pump. The following are used to alert maintenance per- Read this manual carefully to learn how to safely sonnel to procedures which require special atten- install and operate your pump. Failure to do so tion, to those which could damage equipment, and could result in personal injury or damage to the to those which could be dangerous to personnel:...

  • Page 5: Safety - Section A

    80 SERIES OM−01524 SAFETY - SECTION A This information applies to 80 Series ba- containing specified entrained solids. sic pumps. Gorman-Rupp has no con- Only the Gorman-Rupp Company or an trol over or particular knowledge of the authorized Gorman-Rupp distributor power source which will be used.
  • Page 6 OM−01524 80 SERIES 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 If this pump is used with volatile and/or pump casing to rupture or explode. flammable liquids, overheating may produce dangerous fumes.

  • Page 7: Installation − Section Bpage B

    80 SERIES OM−01524 INSTALLATION − SECTION B Review all SAFETY 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 section offers only general recommendations and maximum permissible operating pressure as practices required to inspect, position, and ar-...

  • Page 8: Preinstallation Inspection

    OM−01524 80 SERIES PREINSTALLATION INSPECTION POSITIONING PUMP The pump assembly was inspected and tested be- fore shipment from the factory. Before installation, inspect the pump for damage which may have oc- Use lifting and moving equipment in curred during shipment. Check as follows: good repair and with adequate capacity a.

  • Page 9: Materials

    80 SERIES OM−01524 Materials 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. Either pipe or hose maybe used for suction and discharge lines;...

  • Page 10: Suction Line Positioning

    OM−01524 80 SERIES If there is a liquid flow from an open pipe into the tance equal to at least 3 times the diameter of the sump, the flow should be kept away from the suc- suction pipe. tion inlet because the inflow will carry air down into the sump, and air entering the suction line will re- Suction Line Positioning duce pump efficiency.

  • Page 11: Bypass Lines

    80 SERIES OM−01524 friction losses. Never install a throttling valve in a must be checked and realigned before operation. suction line. Before checking alignment, tighten the foundation bolts. The pump casing feet and/or pedestal feet, and the driver mounting bolts should also be tightly With high discharge heads, it is recommended that secured.

  • Page 12: V-Belt Drives

    OM−01524 80 SERIES MISALIGNED: MISALIGNED: ALIGNED: SHAFTS SHAFTS SHAFTS PARALLEL AND NOT PARALLEL NOT IN LINE SHEAVES IN LINE Figure 3C. Alignment of V-Belt Driven Pumps Tighten the belts in accordance with the belt manu- Figure 3B. Aligning Non-Spider Type Cou- plings facturer’s instructions.

  • Page 13: Operation − Section C

    OM−01524 80 SERIES OPERATION − SECTION C Review all SAFETY information in Section A. PRIMING Follow the instructions on all tags, labels and Install the pump and piping as described in IN- decals attached to the pump. STALLATION. Make sure that the piping connec- tions are tight, and that the pump is securely mounted.

  • Page 14: Starting

    OM−01524 80 SERIES STARTING OPERATION Consult the operations manual furnished with the Lines With a Bypass power source. Close the discharge throttling valve (if so equipped) so that the pump will not have to prime If the pump has been approved for use with petro- against the weight of the liquid in the discharge leum products, be sure the pump unit is properly line.

  • Page 15: Strainer Check

    OM−01524 80 SERIES against closed valves could bring the liquid to a lift, and should then stabilize. If the vacuum reading boil, build pressure, and cause the pump to rup- falls off rapidly after stabilization, an air leak exists. ture or explode. If overheating occurs, stop the Before checking for the source of the leak, check pump and allow it to cool before servicing it.
  • Page 16 OM−01524 80 SERIES curately by placing a contact-type thermometer rect level (see LUBRICATION in Section E). Bear- against the housing. Record this temperature for ing overheating can also be caused by shaft future reference. misalignment and/or excessive vibration. A sudden increase in bearing temperatures is a When pumps are first started, the bearings may warning that the bearings are at the point of failing seem to run at temperatures above normal.

  • Page 17: Troubleshooting − Section D

    80 SERIES OM−01524 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. Lock out or disconnect the power source to ensure that the pump will remain inoperative.
  • Page 18 OM−01524 80 SERIES TROUBLE POSSIBLE CAUSE PROBABLE REMEDY Suction intake not submerged at Check installation and correct PUMP STOPS OR FAILS TO DELIVER proper level or sump too small. submergence as needed. RATED FLOW OR Replace worn or damaged parts. Impeller or other wearing parts worn PRESSURE (cont.) Check that impeller is properly...

  • Page 19: Preventive Maintenance

    80 SERIES OM−01524 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 20 OM−01524 80 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 81 1/4A52−B Based on 70_ F (21 _ C) clear water at sea level Contact the Gorman-Rupp Company to verify per- formance or part numbers.
  • Page 21 OM−01524 80 SERIES SECTION DRAWING PARTS PAGE Figure 1. Pump Model 81 1/4A52−B PAGE E − 2 MAINTENANCE & REPAIR...
  • Page 22 OM−01524 80 SERIES PARTS LIST Pump Model 81 1/4A52−B (From S/N 1287356 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 MAT’L PART NAME...
  • Page 23 OM−01524 80 SERIES PUMP AND SEAL DISASSEMBLY 4. Check the temperature before opening any covers, plates, or AND REASSEMBLY plugs. 5. Close the suction and discharge Review all SAFETY information in Section A. valves. Follow the instructions on all tags, label and de- 6.
  • Page 24 80 SERIES OM−01524 Impeller Removal diate and seal assembly off the shaft, using caution not to drop the rotating portion of the seal as it sep- Immobilize the impeller by wedging a block of arates from the shaft. wood or a brass rod between the vanes. Position the intermediate on a flat surface with the Install the shaft key (17).
  • Page 25 OM−01524 80 SERIES be replaced any time the shaft and bear- ings are removed. Clean the bearing housing, shaft and all compo- nent parts (except the bearings) with a soft cloth To prevent damage during removal from soaked in cleaning solvent. Inspect the parts for the shaft, it is recommended that bearings wear or damage and replace as necessary.
  • Page 26 80 SERIES OM−01524 precautions printed on solvent contain- ers. The seal is not normally reused because wear pat- When installing the shaft and bearings into terns on the finished faces cannot be realigned the bearing bore, push against the outer during reassembly.
  • Page 27 OM−01524 80 SERIES RETAINER SEAL PLATE BELLOWS SPRING STATIONARY CENTERING ELEMENT WASHER IMPELLER IMPELLER SHAFT IMPELLER SHIMS STATIONARY ROTATING SPRING SEAT ELEMENT Figure 2. 25285−852 Seal Assembly Impeller Installation Inspect the impeller, and replace it if cracked or badly worn. Install the same thickness of impeller shims (29) as previously removed.
  • Page 28 80 SERIES OM−01524 over the vane plate, and secure it to the intermedi- LUBRICATION ate with the nuts (10). Install the shaft key (15). Seal Assembly The seal assembly is lubricated by the medium be- Final Pump Assembly ing pumped. No additional lubrication is required. Be sure the pump and power source are securely mounted to the base.
  • 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...

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80 series

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