ABCE OM-00990−03 November 10, 2005 INSTALLATION, OPERATION, AND MAINTENANCE MANUAL WITH PARTS LIST 80 SERIES PUMP MODEL 88A52−B THE GORMAN-RUPP COMPANY D MANSFIELD, OHIO www.grpumps.com GORMAN-RUPP OF CANADA LIMITED D ST. THOMAS, ONTARIO, CANADA eCopyright by the Gorman-Rupp Company Printed in U.S.A.
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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) TROUBLESHOOTING − SECTION D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PREVENTIVE MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PUMP MAINTENANCE AND REPAIR - SECTION E . . . . . . . . . . . . . . . . . STANDARD PERFORMANCE CURVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PARTS LIST: Pump Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
80 SERIES OM−00990 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−00990 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. This manual will alert personnel to known procedures which require special attention, to those which could damage equipment, and to those which could be dangerous to personnel.
OM−00990 unit and the National Electric Code or the applicable local code, the National or local code shall take precedence. 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.
0 SERIES OM−00990 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−00990 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−00990 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. critical to efficient pump operation. Figure 2 shows recommended minimum submergence vs. velocity. If two suction lines are installed in a single sump, the flow paths may interact, reducing the efficiency of one or both pumps.
80 SERIES OM−00990 If the application involves a high discharge head, gradually close the discharge throttling valve before stopping the pump. Bypass Lines If a system check valve is used due to high discharge head, it may be necessary to vent trapped air from the top of the pump during the priming process. This may be accomplished by installing a bypass line from the top of the pump, back to the source of liquid. The end of the bypass line must be submerged.
OM−00990 80 SERIES The valve inlet line must be installed between the pump discharge port and the non-pressurized side of the discharge check valve. The valve inlet is at the large end of the valve body, and is provided with standard 1-inch NPT pipe threads. The valve outlet is located at the opposite end of the valve, and is also equipped with standard 1-inch NPT pipe threads. The outlet should be connected to a bleed line which slopes back to the wet well or sump.
80 SERIES OM−00990 MISALIGNED: SHAFTS NOT PARALLEL MISALIGNED: SHAFTS NOT IN LINE ALIGNED: SHAFTS PARALLEL AND SHEAVES IN LINE Figure 4C. Alignment of V-Belt Driven Pumps Figure 4B. Aligning Non-Spider Type Couplings Align non-spider type couplings by using a feeler gauge or taper gauge between the coupling halves every 90_. The coupling is in alignment when the hubs are the same distance apart at all points (see Figure 4B).
OM−00990 GROUNDING If the pump has been approved to pump volatile or flammable liquids, the unit must be grounded by attaching the ground wire assembly to a ground rod in order to eliminate electrostatic build-up by the liquid being pumped. Install the ground rod in accordance with the National Electrical Codes and all local codes. Be sure the fastening device makes PAGE B − 8 80 SERIES a tight electrical connection with the rod and the pump. Inspect and test the ground wire assembly for conductivity.
OM−00990 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−00990 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−00990 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−00990 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−00990 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−00990 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−00990 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−00990 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 88A52−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−00990 80 SERIES SECTION DRAWING PARTS PAGE Figure 1.
OM−00990 80 SERIES PARTS LIST Pump Model 88A52−B (From S/N 1363098 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−00990 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 Pump Casing Removal To service the impeller (2), wear plate assembly (37) and seal assembly (3), disconnect the discharge piping. Remove the hardware securing the pump casing (1) to the base. Remove the nuts (36) securing the pump casing and gasket set (9) to the pedestal (15) and seal plate (10). Install a standard 5/8−11 UNC lifting eye in the tapped hole in the top of the pump casing. Be sure to screw the eye into the casing until fully engaged.
OM−00990 the impeller side down. Use a suitably sized dowel to press the stationary seat and O-ring out of the seal plate from the backside. If no further disassembly is required, see Seal Reassembly and Installation. 80 SERIES shaft as a unit. Use a suitably sized dowel to press the oil seal out of the bearing cap. Place a block of wood against the drive end of the shaft and tap the shaft and assembled bearings (13 and 16) out of the pedestal.
80 SERIES OM−00990 Rotate the bearings by hand to check for roughness or binding and inspect the bearing balls. If rotation is rough or the bearing balls are discolored, replace the bearings. done quickly, in one continuous motion, to prevent the bearings from cooling and sticking on the shaft. The bearing tolerances provide a tight press fit onto the shaft and a snug slip fit into the pedestal. Replace the bearings, shaft, or pedestal if the proper bearing fit is not achieved.
OM−00990 80 SERIES Press the bearing retainer into the pedestal until it seats against the bearing. Be careful not to cut the oil seal lip on the shaft keyway. Be sure the machine screws and lockwashers (21 and 22) in the bearing retainer are positioned horizontally inline. Reinstall the retaining ring (24) and check shaft endplay. NOTE Shaft endplay should be .002 to .010 inch (0,05 to 0,25 mm). Add or remove bearing adjusting shims to obtain the correct endplay.
80 SERIES OM−00990 SPRING ROTATING ELEMENT O-RING STATIONARY SEAT IMPELLER IMPELLER SHAFT IMPELLER ADJUSTING SHIMS SHAFT SLEEVE SEAL PLATE SPRING SEAT BELLOWS RETAINER Figure 3. 25285−856 Seal Assembly This seal is not designed for operation at temperatures above 160_F (71_C). Do not use at higher operating temperatures. Position the seal plate (10) on a flat surface with the impeller side facing up.
OM−00990 80 SERIES NOTE Be sure the seal plate is tight against the pedestal while measuring this clearance. After the back clearance is set, secure the impeller with the hardware (42, 43 and 44). Pump Casing Installation Do not attempt to lift the complete pump unit using the lifting eye. It is designed to facilitate removal or installation of individual components only. Additional weight may result in damage to the pump or failure of the eye bolt.
80 SERIES OM−00990 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.
