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ACDE
OM‐00575‐02
March 28, 1980
Rev. C 10‐25‐2013
INSTALLATION, OPERATION,
AND MAINTENANCE MANUAL
WITH PARTS LIST
10 SERIES PUMP
MODEL
12B2‐B
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
1980 The Gorman‐Rupp Company
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Related Manuals for GORMAN-RUPP 12B2-B
Summary of Contents for GORMAN-RUPP 12B2-B
- Page 1 ACDE OM‐00575‐02 March 28, 1980 Rev. C 10‐25‐2013 INSTALLATION, OPERATION, AND MAINTENANCE MANUAL WITH PARTS LIST 10 SERIES PUMP MODEL 12B2‐B THE GORMAN‐RUPP COMPANY D MANSFIELD, OHIO www.grpumps.com GORMAN‐RUPP OF CANADA LIMITED ST. THOMAS, ONTARIO, CANADA Printed in U.S.A. 1980 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. RECORD YOUR PUMP MODEL AND SERIAL NUMBER Please record your pump model and serial number in the spaces provided below. Your Gorman‐Rupp distributor needs this information when you require parts or service. Pump Model: Serial Number:...
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Page 3: Table Of Contents
TABLE OF CONTENTS INTRODUCTION ..........PAGE I - 1 SAFETY ‐... - Page 4 TABLE OF CONTENTS (continued) TROUBLESHOOTING - SECTION D ......PAGE D - 1 PREVENTIVE MAINTENANCE .
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Page 5: Introduction
10 SERIES OM-00575 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 6: Safety - Section A
10 SERIES OM-00575 SAFETY ‐ SECTION A This information applies to 10 Series ba 6. Vent the pump slowly and cau sic pumps. Gorman‐Rupp has no con tiously. trol over or particular knowledge of the 7. Drain the pump. power source which will be used. Refer to the manual accompanying the power source before attempting to begin oper... - Page 7 OM-00575 10 SERIES Do not operate the pump without the Do not remove plates, covers, gauges, shields and/or guards in place over the pipe plugs, or fittings from an over drive shaft, belts, and/or couplings, or heated pump. Vapor pressure within the other rotating parts.
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Page 8: Installation - Section B
See Figure 1 for the approximate physical dimen some of the information such as mounting, line sions of this pump. OUTLINE DRAWING Figure 1. Pump Model 12B2-B INSTALLATION PAGE B - 1... -
Page 9: Preinstallation Inspection
OM-00575 10 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 curred during shipment. Check as follows: Death or serious personal injury and damage to the pump or components a. -
Page 10: Suction And Discharge Piping
10 SERIES OM-00575 Installation closer to the pump may result in erratic SUCTION AND DISCHARGE PIPING readings. SUCTION LINES Pump performance is adversely effected by in creased suction lift, discharge elevation, and fric To avoid air pockets which could affect pump prim tion losses. -
Page 11: Suction Lines In Sumps
OM-00575 10 SERIES Suction Lines In Sumps of one or both pumps. To avoid this, position the suction inlets so that they are separated by a dis If a single suction line is installed in a sump, it tance equal to at least 3 times the diameter of the should be positioned away from the wall of the suction pipe. -
Page 12: Discharge Lines
10 SERIES OM-00575 In low discharge head applications (less than 30 DISCHARGE LINES feet (9,1 m)), it is recommended that the bypass line be run back to the wet well, and located 6 Siphoning inches below the water level or cut‐off point of the low level pump. -
Page 13: Automatic Air Release Valve
OM-00575 10 SERIES AUTOMATIC AIR RELEASE VALVE When properly installed, a Gorman‐Rupp Auto matic Air Release Valve will permit air to escape A manual shut‐off valve should not be through the bypass line and then close automati installed in any bypass line. A manual cally when the pump is fully primed and pumping shut‐off valve may inadvertently be left at full capacity. -
Page 14: Alignment
10 SERIES OM-00575 DISCHARGE PIPE CLEAN‐OUT COVER INSTALL AIR RELEASE VALVE IN HORIZONTAL POSITION DISCHARGE CHECK VALVE 90_ LONG RADIUS ELBOW SUPPORT PUMP DISCHARGE BRACKET SELF‐PRIMING CENTRIFUGAL PUMP BLEED LINE 1” (25,4 MM) DIA. MIN. (CUSTOMER FUR NISHED) DO NOT EX SUCTION TEND BELOW PUMP LINE... -
Page 15: Coupled Drives
OM-00575 10 SERIES when the hubs are the same distance apart at all points (see Figure 4B). Check parallel adjustment by laying a straightedge Adjusting the alignment in one direction across both coupling rims at the top, bottom, and may alter the alignment in another direc side. -
Page 16: V-Belt Tensioning
10 SERIES OM-00575 The ratio of deflection to belt span is 1:64 for both parts can catch clothing, fingers, or tools, causing severe injury to person ASA and metric units. Therefore, a belt with a span nel. of 64 inches would require a deflection of 1 inch at the force shown on the Tables for your particular V‐BELT TENSIONING application. - Page 17 OM-00575 10 SERIES Table 1. Sheave Diameter (Inches) Table 2. Sheave Diameter (Millimeters) 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 & Machined Uncogged &...
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Page 18: Operation - Section C
OM-00575 10 SERIES OPERATION - SECTION C Review all SAFETY information in Section A. 1. The pump is being put into service for the first time. Follow the instructions on all tags, labels and 2. The pump has not been used for a consider decals attached to the pump. -
Page 19: Operation
OM-00575 10 SERIES Consult the operating manual furnished with the Leakage power source before attempting to start the power source. No leakage should be visible at pump mating sur faces, or at pump connections or fittings. Keep all If an electric motor is used to drive the pump, re line connections and fittings tight to maintain maxi... -
Page 20: Pump Vacuum Check
OM-00575 10 SERIES Pump Vacuum Check Temperatures up to 160_F (71_C) are considered normal for bearings, and they can operate safely to With the pump inoperative, install a vacuum gauge at least 180_F (82_C). in the system, using pipe dope on the threads. Block the suction line and start the pump. - Page 21 10 SERIES OM-00575 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. Disconnect or lock out the power source to ensure that the pump will remain inoperative.
- Page 22 OM-00575 10 SERIES TROUBLE POSSIBLE CAUSE PROBABLE REMEDY Impeller or other wearing parts worn Replace worn or damaged parts. PUMP STOPS OR FAILS TO DELIVER or damaged. Check that impeller is properly RATED FLOW OR centered and rotates freely. PRESSURE (cont.) Impeller clogged.
- Page 23 10 SERIES OM-00575 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 24 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 12B2-B Based on 70_F (21_C) clear water at sea level Contact the Gorman‐Rupp Company to verify per...
- Page 25 OM-00575 10 SERIES PARTS PAGE SECTION DRAWING Figure E-1. Pump Model 12B2-B PAGE E - 2 MAINTENANCE & REPAIR...
- Page 26 10 SERIES OM-00575 PARTS LIST Pump Model 12B2-B (From S/N 723756 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 NAME...
- Page 27 OM-00575 10 SERIES PUMP AND SEAL DISASSEMBLY 3. Allow the pump to completely cool if overheated. AND REASSEMBLY 4. Check the temperature before opening any covers, plates, or Review all SAFETY information Section A. plugs. Follow the instructions on all tags, label and de 5.
- Page 28 10 SERIES OM-00575 Pump Casing Removal With the impeller rotation still blocked, strike the lathe dog sharply in a counterclockwise direction (when facing the drive end of the shaft). The impel ler may also be loosened by using a long piece of heavy bar stock to pry against the arm of the lathe dog in a counterclockwise direction (when facing Death or serious personal injury and...
- Page 29 OM-00575 10 SERIES ing rings. The seal liner is a press fit in the seal plate Press the oil seal (30) from the pedestal bore. and does not normally require replacement. If seal After removing the shaft and bearings, clean and liner replacement is required, refer to Seal Reas...
- Page 30 10 SERIES OM-00575 The bearing tolerances provide a tight press fit out of position in shrinking. If movement has oc onto the shaft and a snug slip fit into the pedestal. curred, use a suitably sized sleeve and a press to Replace the bearings, shaft, or pedestal if the reposition the bearings.
- Page 31 OM-00575 10 SERIES Install the slinger ring (31) and shaft key (21). Install Handle the seal parts with extreme care to prevent any leveling shims used under the pedestal feet. damage. Be careful not to contaminate precision finished faces; even fingerprints on the faces can shorten seal life.
- Page 32 10 SERIES OM-00575 SEAL PLATE SPRING ROTATING ELEMENT STATIONARY ELEMENT IMPELLER IMPELLER STATIONARY SHAFT WASHER SHAFT SLEEVE IMPELLER SHIMS STATIONARY ROTATING ELEMENT ELEMENT PACKING RINGS Figure 3. Seal Assembly the pedestal (26) using two capscrews and nuts (3/8-16 UNC x 1-1/2 inch long, not supplied). Slide the inboard rotating element into the lubri...
- Page 33 OM-00575 10 SERIES Lubricate the seal assembly as indicated in LU leveling shims used under the mounting feet of the BRICATION after the impeller has been installed. pump casing. Back Cover Installation Impeller Installation and Adjustment If the wear plate (37) was removed for replace Inspect the impeller and replace it if cracked or ment, secure it to the cover plate (42) using the at...
- Page 34 10 SERIES OM-00575 If a lifting eye was used to move the pump casing, LUBRICATION be sure to remove the lifting eye from the pump casing. Seal Assembly (Figures 1 and 4) Be sure the pump and power source have been properly lubricated, see LUBRICATION.
- Page 35 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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