OM-00615-OB02 April 2, 2002 Rev. A 12/03/02 ACDE INSTALLATION, OPERATION, AND MAINTENANCE MANUAL WITH PARTS LIST 10 SERIES PUMPS MODEL 11 1/2A52−B THE GORMAN-RUPP COMPANY D MANSFIELD, OHIO GORMAN-RUPP OF CANADA LIMITED D ST. THOMAS, ONTARIO, CANADA www.gormanrupp.com eCopyright by the Gorman-Rupp Company Printed in U.S.A.
TABLE OF CONTENTS INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PAGE I − 1 SAFETY - SECTION A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PAGE A − 1 INSTALLATION − SECTION B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PAGE B − 1 Pump Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TABLE OF CONTENTS (continued) PUMP MAINTENANCE AND REPAIR - SECTION E . . . . . . . . . . . . . . . . . STANDARD PERFORMANCE CURVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PARTS LIST: Pump Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PUMP AND SEAL DISASSEMBLY AND REASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . Suction Check Valve Removal and Disassembly . . . . . . . . . . . . . .
10 SERIES OM−00615 INTRODUCTION Thank You for purchasing a Gorman-Rupp pump. Read this manual carefully to learn how to safely install and operate your pump. Failure to do so could result in personal injury or damage to the pump. performance and longest life from your GormanRupp pump. This pump is a 10 Series, semi-open impeller, selfpriming centrifugal model with a suction check valve. The basic material of construction for wetted parts is gray iron.
10 SERIES OM−00615 SAFETY - SECTION A This information applies to 10 Series basic pumps. Gorman-Rupp has no control over or particular knowledge of the power source which will be used. Refer to the manual accompanying the power source before attempting to begin operation. Because pump installations are seldom identical, this manual cannot possibly provide detailed instructions and precautions for each specific application.
10 SERIES Overheating may produce dangerous fumes. Use extreme caution when venting the pump, or when removing covers, plates, plugs, or fittings. Do not operate the pump without shields and/or guards in place over the drive shafts, belts, and/or couplings, or other rotating parts. Exposed rotating parts can catch clothing, fingers, or tools, causing severe injury to personnel.
OM−00615 10 SERIES INSTALLATION − SECTION B Review all SAFETY information in Section A. Since pump installations are seldom identical, this section offers only general recommendations and practices required to inspect, position, and arrange the pump and piping. specific application.
10 SERIES c. Carefully read all tags, decals, and markings on the pump assembly, and perform all duties indicated. Note that the pump shaft rotates in the required direction. OM−00615 and move the unit are improperly wrapped around the pump. Mounting Locate the pump in an accessible place as close as practical to the liquid being pumped. Level mounting is essential for proper operation. Only operate this pump in the direction indicated by the arrow on the pump body and on the accompanying decal.
OM−00615 10 SERIES Lines near the pump must be independently supported to avoid strain on the pump which could cause excessive vibration, decreased bearing life, and increased shaft and seal wear. If hose-type lines are used, they should have adequate support to secure them when filled with liquid and under pressure. three or four times the cross section of the suction line, and that the openings will not permit passage of solids larger than the solids handling capability of the pump.
SERIES OM−00615 NOTE The pipe submergence required may be reduced by installing a standard pipe increaser fitting at the end of the suction line. The larger opening size will reduce the inlet velocity. Calculate the required submergence using the following formula based on the increased opening size (area or diameter). Figure B−2. Recommended Minimum Suction Line Submergence vs.
OM−00615 10 SERIES tween the pump discharge and the check valve. A self-priming centrifugal pump will not prime if there is sufficient static liquid head to hold the discharge check valve closed. NOTE The bypass line should be sized so that it does not affect pump discharge capacity; however, the bypass line should be at least 1 inch (25,4 mm) in diameter to minimize the chance of plugging.
10 SERIES OM−00615 Theory of Operation Figures B−3 and B−4 show a cross-sectional view of the Automatic Air Release Valve, and a corresponding description of operation. É É É É É Some leakage (1 to 5 gallons (3,8 to 18,9 Liters) per minute) will occur when the valve is fully closed. Be sure the bypass line is directed back to the wet well or tank to prevent hazardous spills. When the pump shuts down, the spring returns the diaphragm to its original position.
OM−00615 10 SERIES DISCHARGE PIPE CLEAN-OUT COVER INSTALL AIR RELEASE VALVE IN HORIZONTAL POSITION DISCHARGE CHECK VALVE 90_ LONG RADIUS ELBOW SUPPORT BRACKET BLEED LINE 1" (25,4 MM) DIA. MIN. (CUSTOMER FURNISHED) EXTEND 6" (152 MM) BELOW PUMP OFF LIQUID LEVEL PUMP DISCHARGE SELF-PRIMING CENTRIFUGAL PUMP SUCTION LINE WET WELL OR SUMP Figure B−5.
10 SERIES OM−00615 When checking alignment, disconnect the power source to ensure that the pump will remain inoperative. Adjusting the alignment in one direction may alter the alignment in another direction. Check each procedure after altering alignment. Coupled Drives When using couplings, the axis of the power source must be aligned to the axis of the pump shaft in both the horizontal and vertical planes. Most couplings require a specific gap or clearance between the driving and the driven shafts.
OM−00615 they will slip; if the belts are too tight, there will be excessive power loss and possible bearing failure. Select pulleys that will match the proper speed ratio; overspeeding the pump may damage both pump and power source. INSTALLATION 10 SERIES Do not operate the pump without the guard in place over the rotating parts. exposed rotating parts can catch clothing, fingers, or tools, causing severe injury to personnel.
OM−00615 10 SERIES OPERATION − SECTION C Review all SAFETY information in Section A. Follow the instructions on all tags, labels and decals attached to the pump. This pump is designed to handle corrosive liquids containing specified entrained solids, residues and slurries. Do not attempt to pump volatile, or flammable liquids which may damage the pump or endanger personnel as a result of pump failure.
10 SERIES OM−00615 Consult the operating manual furnished with the pump power source before attempting to start the power source. If an electric motor is used to drive the pump, remove V-belts, couplings, or otherwise disconnect the pump from the motor before checking motor rotation. Operate the motor independently while observing the direction of the motor shaft, or cooling fan.
OM−00615 regularly, and clean it as necessary. The strainer should also be checked if pump flow rate begins to drop. If a vacuum suction gauge has been installed, monitor and record the readings regularly to detect strainer blockage. Never introduce air or steam pressure into the pump casing or piping to remove a blockage. This could result in personal injury or damage to the equipment.
OM−00615 10 SERIES 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. 3. Allow the pump to completely cool if overheated. 4. Check the temperature before opening any covers, plates, or plugs. 5. Close the suction and discharge valves. 6. Vent the pump slowly and cautiously. 7. Drain the pump.
10 SERIES TROUBLE PUMP STOPS OR FAILS TO DELIVER RATED FLOW OR PRESSURE (cont.) PUMP REQUIRES TOO MUCH POWER PUMP CLOGS FREQUENTLY EXCESSIVE NOISE BEARINGS RUN TOO HOT PAGE D − 2 OM−00615 POSSIBLE CAUSE PROBABLE REMEDY Leaking or worn seal or pump gasket. Check pump vacuum. Replace leaking or worn seal or gasket. Impeller clogged. Free impeller of debris. Pump speed too slow. Check driver output; check belts or couplings for slippage. Pump running backwards.
OM−00615 10 SERIES PREVENTIVE MAINTENANCE Since pump applications are seldom identical, and pump wear is directly affected by such things as the abrasive qualities, pressure and temperature of the liquid being pumped, this section is intended only to provide general recommendations and practices for preventive maintenance. Regardless of the application however, following a routine preventive maintenance schedule will help assure trouble-free performance and long life from your Gorman-Rupp pump.
OM−00615 10 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 11 1/2A22−B Based on 70_ F (21_ C) clear water at sea level with minimum suction lift. Since pump installations are seldom identical, your performance may be different due to such factors as viscosity, specific gravity, elevation, temperature, and impeller trim.
10 SERIES OM−00615 SECTION DRAWING Figure E−1.
OM−00615 10 SERIES PARTS LIST Pump Model 11 1/2A52−B (From S/N 1241127 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 NO.
10 SERIES PUMP AND SEAL DISASSEMBLY AND REASSEMBLY Review all SAFETY information in Section A. Follow the instructions on all tags, label and decals attached to the pump. OM−00615 Suction Check Valve Removal and Disassembly Before attempting to service the pump, remove the pump casing drain plug (30) and drain the pump. Clean and reinstall the drain plug. To service the suction check valve assembly (39), remove the suction piping.
OM−00615 10 SERIES shaft key (19). Install a lathe dog on the drive end of the shaft (20) with the V" notch positioned over the shaft keyway. With the impeller rotation still blocked, strike the lathe dog sharply in a counterclockwise direction (when facing the drive end of the shaft). The impeller 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 the drive end of the shaft) as shown in Figure 2.
10 SERIES OM−00615 Shaft and Bearing Reassembly and Installation Clean and inspect the bearings as indicated in Shaft and Bearing Removal and Disassembly. To prevent damage during removal from the shaft, it is recommended that bearings be cleaned and inspected in place. It is strongly recommended that the bearings be replaced any time the shaft and bearings are removed. Clean the pedestal, shaft and all component parts (except the bearings) with a soft cloth soaked in cleaning solvent.
OM−00615 Slide the slinger ring (12) onto the shaft. Lubricate the pedestal as indicated in LUBRICATION at the end of this section. Seal Reassembly and Installation Clean the seal cavity and shaft with a cloth soaked in fresh cleaning solvent. Most cleaning solvents are toxic and flammable. Use them only in a well ventilated area free from excessive heat, sparks, and flame. Read and follow all precautions printed on solvent containers. Inspect the impeller shaft for damage.
10 SERIES OM−00615 RETAINER SEAL PLATE SPRING SLINGER RING IMPELLER IMPELLER SHIMS IMPELLER SHAFT ROTATING ELEMENT STATIONARY SEAT SHAFT SLEEVE BELLOWS SPRING RETAINER DRIVE BAND STATIONARY SEAT Figure E−3. 25285−853 Seal Assembly the shaft until the seal elements contact. Continue to push the sleeve through the seal until it bottoms against the shaft shoulder. This seal is not designed for operation at temperatures above 160_F (71_C). Do not use at higher operating temperatures.
OM−00615 10 SERIES Pump Casing Installation Remove the hardware temporarily securing the seal plate to the pedestal. Install the same thickness of pump casing gaskets (26) as previously removed, and secure the pump casing (1) to the seal plate and pedestal with the nuts (11). Do not fully tighten the nuts at this time. NOTE The back cover assembly must be in place to adjust the impeller face clearance. A clearance of .008 to .
10 SERIES There are no provisions in the bearing cavity to drain or flush the lubricant. The pump and pedestal must be disassembled to completely clean and maintain this cavity. Under normal conditions, change the grease after each 5000 hours of operation, or at 12 month intervals, whichever comes first. Change the grease more frequently if the pump is operated continuously or installed in an environment where variable hot and cold temperatures are common.
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 D ST.
