OM-00831-02 December 12, 1981 Rev. D 03-14-05 ABCDE INSTALLATION, OPERATION, AND MAINTENANCE MANUAL WITH PARTS LIST 80 SERIES PUMP MODEL 82H3−B THE GORMAN-RUPP COMPANY D MANSFIELD, OHIO www.gormanrupp.com GORMAN-RUPP OF CANADA LIMITED D ST. THOMAS, ONTARIO, CANADA 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 Disassembly . . . . . . . . . . . . . . . . . . . .
80 SERIES OM−00831 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.
80 SERIES OM−00831 SAFETY - SECTION A This information applies to 80 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.
OM−00831 If this pump is used with volatile and/or flammable liquids, overheating may produce dangerous fumes. Take precautions to ensure the area surrounding the pump is adequately ventilated. Allow the pump to cool and use extreme caution when venting the pump, or when removing covers, plates, plugs, or fittings. 80 SERIES of time.
80 SERIES OM−00831 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.
OM−00831 PREINSTALLATION INSPECTION The pump assembly was inspected and tested before shipment from the factory. Before installation, inspect the pump for damage which may have occurred during shipment. Check as follows: a. Inspect the pump for cracks, dents, damaged threads, and other obvious damage. b. Check for and tighten loose attaching hardware. Since gaskets tend to shrink after drying, check for loose hardware at mating surfaces. c.
80 SERIES compatible with the liquid being pumped. If hose is used in suction lines, it must be the rigid-wall, reinforced type to prevent collapse under suction. Using piping couplings in suction lines is not recommended. Line Configuration Keep suction and discharge lines as straight as possible to minimize friction losses. Make minimum use of elbows and fittings, which substantially increase friction loss. If elbows are necessary, use the long-radius type to minimize friction loss.
OM−00831 80 SERIES suction inlet at a distance 1-1/2 times the diameter of the suction pipe. The baffle will allow entrained air to escape from the liquid before it is drawn into the suction inlet. If two suction lines are installed in a single sump, the flow paths may interact, reducing the efficiency of one or both pumps. To avoid this, position the suction inlets so that they are separated by a distance equal to at least 3 times the diameter of the suction pipe.
80 SERIES OM−00831 from excessive shock pressure and reverse rotation when it is stopped. If the application involves a high discharge head, gradually close the discharge throttling valve before stopping the pump. bolts. The pump casing feet and/or pedestal feet, and the driver mounting bolts should also be tightly secured. When checking alignment, disconnect the power source to ensure that the pump will remain inoperative.
OM−00831 80 SERIES MISALIGNED: SHAFTS NOT PARALLEL MISALIGNED: SHAFTS NOT IN LINE ALIGNED: SHAFTS PARALLEL AND SHEAVES IN LINE Figure 3C. Alignment of V-Belt Driven Pumps Figure 3B. Aligning Non-Spider Type Couplings Align non-spider type couplings by using a feeler gauge or taper gauge between the coupling halves every 90 degrees. The coupling is in alignment when the hubs are the same distance apart at all points (see Figure 3B).
OM−00831 80 SERIES OPERATION − SECTION C Review all SAFETY information in Section A. PRIMING Follow the instructions on all tags, labels and decals attached to the pump. Install the pump and piping as described in INSTALLATION. Make sure that the piping connections are tight, and that the pump is securely mounted. Check that the pump is properly lubricated (see LUBRICATION in MAINTENANCE AND REPAIR).
OM−00831 80 SERIES STARTING OPERATION Consult the operations manual furnished with the power source. Lines With a Bypass If the pump has been approved for use with petroleum products, be sure the pump unit is properly grounded before operation. See GROUNDING, Section B. Rotation The correct direction of pump rotation is counterclockwise when facing the impeller. If the pump is operated in the wrong direction, the impeller could become loosened from the shaft and seriously damage the pump.
OM−00831 80 SERIES boil, build pressure, and cause the pump to rupture or explode. If overheating occurs, stop the pump and allow it to completely cool before servic- falls off rapidly after stabilization, an air leak exists. Before checking for the source of the leak, check the point of installation of the vacuum gauge. ing it. Refill the pump casing with cool liquid. STOPPING Do not remove plates, covers, gauges, pipe plugs, or fittings from an overheated pump.
OM−00831 80 SERIES against the housing. Record this temperature for future reference. ing overheating can also be caused by shaft misalignment and/or excessive vibration. A sudden increase in bearing temperatures is a warning that the bearings are at the point of failing to operate properly. Make certain that the bearing lubricant is of the proper viscosity and at the correct level (see LUBRICATION in Section E).
80 SERIES OM−00831 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. 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.
OM−00831 80 SERIES TROUBLE POSSIBLE CAUSE PROBABLE REMEDY PUMP STOPS OR FAILS TO DELIVER RATED FLOW OR PRESSURE (cont.) Impeller or other wearing parts worn or damaged. Replace worn or damaged parts. Check that impeller is properly centered and rotates freely. Impeller clogged. Free impeller of debris. Pump speed too slow. Check driver output; check belts or couplings for slippage. Discharge head too high. Install bypass line. Suction lift too high. Measure lift w/vacuum gauge.
80 SERIES OM−00831 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−00831 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 82H3−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 difference due to such factors as viscosity, specific gravity, elevation, temperature, and impeller trim.
OM−00831 80 SERIES SECTION DRAWING PARTS PAGE Figure 1.
OM−00831 80 SERIES PARTS LIST Pump Model 82H3−B (From S/N 716123 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.
OM−00831 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. This pump requires little service due to its rugged, minimum-maintenance design. However, if it becomes necessary to inspect or replace the wearing parts, follow these instructions which are keyed to the sectional view (see Figure 1) and the accompanying parts lists.
80 SERIES OM−00831 Pump Casing and Wear Plate Removal To service the wear plate (29), remove the nuts (26) securing the pump casing to the seal plate (27) and pedestal (10). Separate the pump casing and remove the gasket set (28). Tie and tag the gaskets, or measure and record their thickness for ease of reassembly. Inspect the wear plate for scoring or excessive wear. To remove the wear plate, disengage the hardware (36, 34, 36 and 37). Pull the wear plate out of the pump casing.
OM−00831 bearing shim set (20); tie and tag the shims, or measure and record their thickness for ease of reassembly. Remove the setscrews (17) from the bearing retainer (18) and install two machine screws (#10−32 x 1−inch long, not supplied). Pry the retainer from the pedestal bore using a pair of screwdrivers against the heads of the machine screws. Do not use the machine screws to jack against the ball bearing. Remove the machine screws and reinstall the setscrews.
80 SERIES OM−00831 NOTE If a hot oil bath is used to heat the bearings, both the oil and the container must be absolutely clean. If the oil has been previously used, it must be thoroughly filtered. Heat the bearings to a uniform temperature no higher than 250_F (120_C), and slide the bearings onto the shaft, one at a time, until they are fully seated against the shaft shoulders. This should be done quickly, in one continuous motion, to prevent the bearings from cooling and sticking on the shaft.
OM−00831 80 SERIES Wipe lightly in a concentric pattern to avoid scratching the faces. Inspect the seal components for wear, scoring, grooves, and other damage that might cause leakage. Clean and polish the shaft sleeve, or replace it if there are nicks or cuts on either end. If any components are worn, replace the complete seal; never mix old and new seal parts.
80 SERIES OM−00831 Slide the assembled seal and sleeve onto the shaft until the seal faces contact. Continue to press the shaft sleeve through the rotating portion of the seal until it is fully seated against the shaft shoulder. Secure the pump casing to the base with the previously removed hardware. Be sure to reinstall any leveling shims used under the mounting feet of the pump casing. Install the seal spring and spring seat (4).
OM−00831 80 SERIES Refer to OPERATION, Section C, before putting the pump back into service. Under normal conditions, change the oil each 5000 hours or once each year, more frequently if the pump is operated continuously or installed in an environment with rapid temperature change. LUBRICATION Seal Assembly The seal assembly is lubricated by the medium being pumped, and no additional lubrication is required. Bearings The pedestal was fully lubricated when shipped from the factory.
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.
