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Summary of Contents for GORMAN-RUPP 12D1-1B20 FT4
- Page 1 OM-06789-01 August 24, 2015 INSTALLATION, OPERATION, AND MAINTENANCE MANUAL WITH PARTS LIST 10 SERIES PUMP MODEL 12D1-1B20 FT4 GORMAN‐RUPP PUMPS www.grpumps.com 2015 Gorman‐Rupp Pumps Printed in U.S.A.
- 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.
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Page 3: Table Of Contents
TABLE OF CONTENTS INTRODUCTION ..........PAGE I - 1 SAFETY ‐... - Page 4 TABLE OF CONTENTS (continued) Pump End Assy ............PAGE E - 5 PUMP AND SEAL DISASSEMBLY AND REASSEMBLY .
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Page 5: Introduction
10 SERIES OM-06789 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 6: Safety - Section A
10 SERIES OM-06789 SAFETY ‐ SECTION A This information applies to 10 Series en damage the pump or endanger person gine driven pumps. Refer to the manual nel as a result of pump failure. accompanying the engine before at tempting to begin operation. Because pump installations are seldom After the pump has been installed, make identical, this manual cannot possibly... - Page 7 OM-06789 10 SERIES 5. Vent the pump slowly and cau and fire hazard. Make certain that all fuel lines are securely connected and tiously. free of leaks. Never refuel a hot or run 6. Refer to instructions in this manual ning engine.
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Page 8: Installation - Section B
See Figure 1 for the approximate physical dimen configuration, and priming must be tailored to the sions of this pump. OUTLINE DRAWING Figure 1. Pump Model 12D1-1B20 FT4 INSTALLATION PAGE B - 1... -
Page 9: Preinstallation Inspection
OM-06789 10 SERIES or piping before attempting to lift existing, installed PREINSTALLATION INSPECTION units. The pump assembly was inspected and tested be Mounting fore shipment from the factory. Before installation, inspect the pump for damage which may have oc Locate the pump in an accessible place as close as curred during shipment. -
Page 10: Line Configuration
10 SERIES OM-06789 Line Configuration Fittings Suction lines should be the same size as the pump Keep suction and discharge lines as straight as inlet. If reducers are used in suction lines, they possible to minimize friction losses. Make mini should be the eccentric type, and should be in... -
Page 11: Suction Line Positioning
OM-06789 10 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
10 SERIES OM-06789 stalled in the discharge line to protect the pump Bypass Lines from excessive shock pressure and reverse rota If a system check valve is used due to high dis tion when it is stopped. charge head, it may be necessary to vent trapped air from the top of the pump during the priming process. -
Page 13: Operation - Section C
OM-06789 10 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-06789 10 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-06789 10 SERIES After stopping the pump, remove the positive bat STOPPING tery cable 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
10 SERIES OM-06789 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 take pre cautions to ensure that the pump will remain inoperative. - Page 17 OM-06789 10 SERIES TROUBLE POSSIBLE CAUSE PROBABLE REMEDY PUMP STOPS OR Air leak in suction line. Correct leak. FAILS TO DELIVER Suction intake not submerged at Check installation and correct RATED FLOW OR proper level or sump too small. submergence as needed. PRESSURE Lining of suction hose collapsed.
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Page 18: Preventive Maintenance
10 SERIES OM-06789 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
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 12D1-1B20 FT4 Based on 70 F (21 C) clear water at sea level with minimum suction lift. - Page 20 OM-06789 10 SERIES ILLUSTRATION PARTS PAGE Figure 1. Pump Model 12D1-1B20 FT4 PAGE E - 2 MAINTENANCE & REPAIR...
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Page 21: Parts Lists
10 SERIES OM-06789 PARTS LIST Pump Model 12D1-1B20 FT4 (From S/N 1598707 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... - Page 22 OM-06789 10 SERIES ILLUSTRATION Figure 2. Pump Parts Only 12D1‐(1B20) PPO PAGE E - 4 MAINTENANCE & REPAIR...
- Page 23 10 SERIES OM-06789 PARTS LIST Pump Parts Only 12D1‐(1B20) PPO ITEM PART MAT'L PART NAME NUMBER CODE PUMP CASING 38224-205 13040 FILL PLUG ASSY 48271-063 STREET ELBOW RS32 11999 STUD C0605-1/2 15991 HEX HD CAPSCREW 22645-132 LOCK WASHER 21171-510 HEX NUT 15991 SHAFT SLEEVE 31411-267...
- Page 24 OM-06789 10 SERIES PUMP AND SEAL DISASSEMBLY 4. Check the temperature before AND REASSEMBLY opening any covers, plates, or plugs. Review all SAFETY information in Section A. 5. Close the suction and discharge valves. Follow the instructions on all tags, labels and 6.
- Page 25 10 SERIES OM-06789 (11, 12, 14 and 15) securing the pump casing to Seal Reassembly and Installation the rollover base (9). (Figures 2 and 3) (Figure 2) Inspect the engine crankshaft for damage. Small Support the pump casing using a suitable hoist scratches or nicks may be removed with a fine file and sling.
- Page 26 OM-06789 10 SERIES finished faces. Assemble the seal as follows, (see Figure 3). RETAINER INTERMEDIATE SPRING SPRING RETAINER IMPELLER BELLOWS SHAFT IMPELLER SLEEVE SHAFT IMPELLER SHIMS DRIVE BAND STATIONARY ROTATING SEAT ELEMENT Figure 3. Seal Assembly sleeve over the shaft until the sealing faces con tact.
- Page 27 10 SERIES OM-06789 Pump Casing Installation Secure the back cover assembly using the hard ware (23 and 24). Do not over tighten the wing (Figure 2) nuts; they should be just tight enough to ensure a good seal at the back cover shoulder. Install the same thickness of pump casing gaskets (14) as previously removed and secure the pump Suction Check Valve Installation...
- Page 28 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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