OM-01912-01 October 13, 1981 Rev. A 07-05-05 C INSTALLATION, OPERATION, AND MAINTENANCE MANUAL WITH PARTS LIST 60 SERIES PUMP MODEL 610M20B−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) PARTS LISTS: Pump Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PUMP AND SEAL DISASSEMBLY AND REASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . Suction Plate And Wear Ring Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Pump Casing Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Impeller Removal . . . . . .
60 SERIES OM−01912 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. This Installation, Operation, and Maintenance manual is designed to help you achieve the best performance and longest life from your GormanRupp pump. This pump is a 60 Series, straight centrifugal model with an enclosed impeller.
60 SERIES OM−01912 SAFETY − SECTION A This information applies to 60 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−01912 Do not operate the pump against a closed discharge valve for long periods of time. This could bring the liquid to a boil, build pressure, and cause the pump casing to rupture or explode. PAGE A − 2 60 SERIES Do not remove plates, covers, gauges, pipe plugs, or fittings from an overheated pump. Vapor pressure within the pump can cause parts being disengaged to be ejected with great force. Allow the pump to cool before servicing.
60 SERIES OM−01912 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. Most of the information pertains to a standard static lift application where the pump is positioned above the free level of liquid to be pumped.
OM−01912 60 SERIES 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 and engine 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.
60 SERIES mum use of elbows and fittings, which substantially increase friction loss. If elbows are necessary, use the long-radius type to minimize friction loss. Connections to Pump Before tightening a connecting flange, align it exactly with the pump port. Never pull a pipe line into place by tightening the flange bolts and/or couplings.
OM−01912 60 SERIES recommended minimum submergence vs. velocity. NOTE 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). The pipe submergence required may be reduced by installing a standard pipe increaser fitting at the Figure 2. Recommended Minimum Suction Line Submergence vs.
60 SERIES OM−01912 pump and piping are installed, and before operation. NOTE Check Rotation, Section C, before final alignment of the pump. When mounted at the Gorman-Rupp factory, driver and pump are aligned before shipment. Misalignment will occur in transit and handling. Pumps must be checked and realigned before operation. Before checking alignment, tighten the foundation bolts. The pump casing feet and/or pedestal feet, and the driver mounting bolts should also be tightly secured.
OM−01912 60 SERIES Tighten the belts in accordance with the belt manufacturer’s instructions. If the belts are too loose, 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. MISALIGNED: SHAFTS NOT PARALLEL MISALIGNED: SHAFTS NOT IN LINE ALIGNED: SHAFTS PARALLEL AND SHEAVES IN LINE Figure 3C.
OM−01912 60 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 clean liquids containing specified entrained solids. Do not attempt to pump volatile, corrosive, or flammable liquids which may damage the pump or endanger personnel as a result of pump failure. Before attempting to operate the priming device, close the discharge throttling valve.
OM−01912 STARTING Consult the operations manual furnished with the power source. OPERATION Leakage No leakage should be visible at pump mating surfaces, or at pump connections or fittings. Keep all line connections and fittings tight to maintain maximum pump efficiency. Liquid Temperature And Overheating The maximum liquid temperature for this pump is 160_ F (71_C). Do not apply it at a higher operating temperature.
60 SERIES OM−01912 BEARING TEMPERATURE CHECK If the application involves a high discharge head, gradually close the discharge throttling valve before stopping the pump. After stopping the pump, disconnect the power source to ensure that the pump will remain inoperative. Cold Weather Preservation In below freezing conditions, drain the pump to prevent damage from freezing. Also, clean out any solids by flushing with a hose.
60 SERIES OM−01912 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−01912 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 60 SERIES POSSIBLE CAUSE PROBABLE REMEDY Pump speed too slow. Check driver output; consult the operation manual. Impeller clogged. Free impeller of debris. Suction lift too high. Measure lift w/vacuum gauge. Reduce lift and/or friction losses in suction line. Leaking or worn seal or pump gasket. Check pump vacuum.
60 SERIES OM−01912 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.
60 SERIES OM−01912 PUMP MAINTENANCE AND REPAIR - SECTION E MAINTENANCE AND REPAIR OF THE WEARING PARTS OF THE PUMP WILL MAINTAIN PEAK OPERATING PERFORMANCE. STANDARD PERFORMANCES FOR PUMP MODEL 610M20B−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−01912 60 SERIES SECTION DRAWING Figure 1.
60 SERIES OM−01912 PARTS PAGE PARTS LIST Pump Assembly 610M20B−B (From S/N 699260 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−01912 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 E−1) and the accompanying parts list.
60 SERIES good repair and with adequate capacity to prevent injuries to personnel or damage to equipment. If slings or chains are used to move the pump or components, make sure that the load is balanced; otherwise serious personal injury or death could result. Suction and discharge hoses and piping must be removed from the pump before lifting. If the impeller (2) is to be removed, the impeller nut (52) should be loosened before removing the pump casing.
OM−01912 60 SERIES Shaft and Bearing Removal and Disassembly Bearing Cleaning and Inspection Remove the hardware securing the pedestal to the base. Use a suitable hoist and sling to move the pedestal assembly to a clean work area. Clean the bearing housing, shaft and all component parts (except the bearings) with a soft cloth soaked in cleaning solvent. Inspect the parts for wear or damage and replace as necessary.
60 SERIES OM−01912 strongly recommended that the bearings be replaced any time the shaft and bearings are removed. NOTE Position the inboard bearing (21) on the shaft as shown in Figure 2.
OM−01912 60 SERIES Press the outboard oil seal (28) into the bearing cap (25) with the lip positioned as shown in Figure 1. Install the bearing cap gasket (33) and shims (31). Secure the bearing cap to the pedestal with the hardware (26 and 27). Use caution not to cut or roll the lip of the oil seal during installation. Lay the seal plate on a flat surface with the impeller side down. Press the oil seal (33) into the seal plate with the lip positioned as shown in Figure 1.
60 SERIES OM−01912 RETAINER SEAL PLATE SPRING O-RINGS IMPELLER IMPELLER KEY STATIONARY ELEMENT IMPELLER SHAFT IMPELLER WASHER OIL SEAL BELLOWS STATIONARY SEAT ROTATING ELEMENT Figure 3. 12461A Seal Assembly bellows, retainer and rotating element) onto the shaft until the seal faces contact. The standard seal is not designed for operation at temperatures above 160_F (71_C). Do not use at higher operating temperatures.
OM−01912 60 SERIES Step 1: Determine how much bulk packing will be required to fill the packing cavity, and wrap it around a rod of the same diameter as the shaft. With the packing wrapped around the rod, cut through each turn as shown. If the cut rings are too thick and will not fit in the packing cavity, place each turn on a clean piece of paper and use a length of pipe, as you would a rolling pin, to roll the ring until the thickness has been reduced.
60 SERIES the wear ring onto the impeller until fully seated against the shoulder and allow it to cool. The wear ring must seat squarely on the impeller; otherwise binding and/or excessive wear will occur. Use caution when handling hot parts to prevent burns. Spot weld the wear ring to the impeller at four places, equally spaced at the vanes. After welding, dynamically balance the impeller assembly per plane 0.2−0.3 oz./in. (5.7−8.5 g./in.).
OM−01912 60 SERIES For cold weather operation, consult the factory or a lubricant supplier for the recommended grade of oil. Monitor the condition of the bearing lubricant regularly for evidence of rust or moisture condensation. This is especially important in areas where variable hot and cold temperatures are common. PAGE E − 12 Power Source Consult the literature supplied with the power source, or contact your local power source representative.
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.
