CDS OM‐01046-OB07 February 14, 1983 Rev. Q 03‐06‐2013 INSTALLATION, OPERATION, AND MAINTENANCE MANUAL WITH PARTS LIST T SERIES PUMPS MODELS T6A3‐B INCLUDING: /F, /FM THE GORMAN‐RUPP COMPANY MANSFIELD, OHIO www.grpumps.com GORMAN‐RUPP OF CANADA LIMITED ST. THOMAS, ONTARIO, CANADA 1983 The Gorman‐Rupp Company Printed in U.S.A.
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.
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 SCHEDULE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PUMP MAINTENANCE AND REPAIR - SECTION E . . . . . . . . . . . . . . . . PERFORMANCE CURVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PARTS LISTS: Pump Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OM-01046 T SERIES 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 Mainte nance manual is designed to help you achieve the best performance and longest life from your Gor man‐Rupp pump. This pump is a T Series, semi‐open impeller, self‐ priming centrifugal model with a suction check valve.
T SERIES OM-01046 SAFETY - SECTION A This information applies to T Series ba sic pumps. Gorman‐Rupp has no con trol 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 pre cautions for each specific application.
OM-01046 Use lifting and moving equipment in good repair and with adequate capacity to prevent injuries to personnel or dam age to equipment. Suction and dis charge hoses and piping must be re moved from the pump before lifting. Do not attempt to disengage any part of an overheated pump unit. Vapor pres sure within the pump casing can eject these parts with great force when they are disengaged. Allow the pump to completely cool before servicing it.
T SERIES OM-01046 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 ar range the pump and piping. Most of the information pertains to a standard static lift application where the pump is posi tioned above the free level of liquid to be pumped.
OM-01046 T 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: Lifting a. Inspect the pump for cracks, dents, damaged threads, and other obvious damage. b. Check for and tighten loose attaching hard ware. Since gaskets tend to shrink after dry ing, check for loose hardware at mating sur faces. c.
T SERIES compatible with the liquid being pumped. If hose is used in suction lines, it must be the rigid‐wall, rein forced type to prevent collapse under suction. Us ing piping couplings in suction lines is not recom mended. Line Configuration Keep suction and discharge lines as straight as possible to minimize friction losses. Make mini mum use of elbows and fittings, which substan tially increase friction loss. If elbows are necessary, use the long‐radius type to minimize friction loss.
OM-01046 T SERIES If it is necessary to position inflow close to the suc tion inlet, install a baffle between the inflow and the 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. Suction Line Positioning The depth of submergence of the suction line is critical to efficient pump operation. Figure 2 shows recommended minimum submergence vs. veloc ity.
T SERIES OM-01046 If the application involves a high discharge head, gradually close the discharge throttling valve before stopping the pump. Bypass Lines Self‐priming pumps are not air compressors. Dur ing the priming cycle, air from the suction line must be vented to atmosphere on the discharge side. If the discharge line is open, this air will be vented through the discharge.
OM-01046 T SERIES tion when removing the plug to prevent injury to personnel from hot liquid. AUTOMATIC AIR RELEASE VALVE When properly installed, a Gorman‐Rupp Auto matic Air Release Valve will permit air to escape through the bypass line and then close automati cally when the pump is fully primed and pumping at full capacity. Some leakage (1 to 5 gallons [3.8 to 19 liters] per minute) will occur when the valve is fully closed.
T SERIES OM-01046 ALIGNMENT The alignment of the pump and its power source is critical for trouble‐free mechanical operation. In either a flexible coupling or V‐belt driven system, the driver and pump must be mounted so that their shafts are aligned with and parallel to each other. It is imperative that alignment be checked after the pump and piping are installed, and before opera tion. The coupling is in alignment when the hub ends are the same distance apart at all points (see Fig ure 4A).
OM-01046 T SERIES Do not operate the pump without the guard in place over the rotating parts. exposed rotating parts can catch cloth ing, fingers, or tools, causing severe in jury to personnel. DRIVE BELT TENSIONING MISALIGNED: SHAFTS NOT PARALLEL MISALIGNED: SHAFTS NOT IN LINE ALIGNED: SHAFTS PARALLEL AND SHEAVES IN LINE Figure 4C.
OM-01046 T SERIES OPERATION - SECTION C Review all SAFETY information in Section A. Follow the instructions on all tags, labels and de cals attached to the pump. This pump is designed to handle liquids containing large entrained solids and slurries. Do not attempt to pump vola tile, corrosive, or flammable liquids which may damage the pump or endan ger personnel as a result of pump fail ure. Pump speed and operating conditions must be within the performance range shown on page E‐1.
OM-01046 If rotation is incorrect on a three‐phase motor, have a qualified electrician interchange any two of the three phase wires to change direction. If rotation is incorrect on a single‐phase motor, consult the liter ature supplied with the motor for specific instruc tions. T SERIES pump components will deteriorate, and the liquid could come to a boil, build pressure, and cause the pump casing to rupture or explode.
OM-01046 T SERIES the pressure relief valve assembly be replaced at each overhaul, or any time the pump casing over heats and activates the valve. Never replace this valve with a substitute which has not been speci fied or provided by the Gorman‐Rupp Company. shock waves can be transmitted to the pump and piping system. Close all connecting valves slowly. On engine driven pumps, reduce the throttle speed slowly and allow the engine to idle briefly be fore stopping.
OM-01046 Temperatures up to 160 F (71 C) are considered normal for bearings, and they can operate safely to at least 180 F (82 C). Checking bearing temperatures by hand is inaccu rate. Bearing temperatures can be measured ac curately by placing a contact‐type thermometer against the housing. Record this temperature for future reference. A sudden increase in bearing temperature is a warning that the bearings are at the point of failing PAGE C - 4 T SERIES to operate properly.
T SERIES OM-01046 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 open ing any covers, plates, or plugs. 5. Close the suction and discharge valves. 6. Vent the pump slowly and cautiously. 7. Drain the pump.
OM-01046 T SERIES TROUBLE POSSIBLE CAUSE PROBABLE REMEDY PUMP STOPS OR FAILS TO DELIVER RATED FLOW OR PRESSURE Strainer clogged. Check strainer and clean if neces sary. Suction intake not submerged at proper level or sump too small. Check installation and correct sub mergence as needed. 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.
T SERIES OM-01046 TROUBLE POSSIBLE CAUSE PROBABLE REMEDY BEARINGS RUN TOO HOT Bearing temperature is high, but within limits. Check bearing temperature regu larly to monitor any increase. Low or incorrect lubricant. Check for proper type and level of lubricant. Suction and discharge lines not properly supported. Check piping installation for proper support. Drive misaligned. Align drive properly.
OM-01046 T SERIES Preventive Maintenance Schedule Service Interval* Item General Condition (Temperature, Unusual Noises or Vibrations, Cracks, Leaks, Loose Hardware, Etc.
OM-01046 T 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 T6A3‐B, Including /F, /FM 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 dif ference due to such factors as viscosity, specific gravity, elevation, temperature, and impeller trim.
OM-01046 T SERIES SECTION DRAWING PARTS PAGE TOP VIEW Figure 1.
OM-01046 T SERIES PARTS LIST Pump Model T6A3-B, Including /F, /FM (From S/N 740693 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-01046 T SERIES SECTION DRAWING Figure 2.
OM-01046 T SERIES PARTS LIST 10956F Repair Rotating Assembly ITEM PART NAME NO.
OM-01046 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 be comes necessary to inspect or replace the wearing parts, follow these instructions which are keyed to the sectional views (see Figures 1 and 2) and the accompanying parts lists.
T SERIES OM-01046 Individual parts are not sold separately. Rotating Assembly Removal (Figure 2) The rotating assembly may be serviced without disconnecting the suction or discharge piping; however, the power source must be removed to provide clearance. The impeller (1) should be loosened while the rotat ing assembly is still secured to the pump casing. Before loosening the impeller, remove the seal cav ity drain plug (25) and drain the seal lubricant.
OM-01046 T SERIES Use caution when unscrewing the impeller; ten sion on the shaft seal spring will be released as the impeller is removed. Inspect the impeller and re place if cracked or badly worn. Disengage the hardware (13 and14) and slide the bearing cap (12) and oil seal (18) off the shaft.Re move the bearing cap gasket (11), and press the oil seal from the bearing cap.
T SERIES tation is rough or the bearing balls are discolored, replace the bearings. The bearing tolerances provide a tight press fit onto the shaft and a snug slip fit into the bearing housing. Replace the bearings, shaft, or bearing housing if the proper bearing fit is not achieved. If bearing replacement is required, remove the out board bearing retaining ring (15), and use a bear ing puller to remove the bearings from the shaft. OM-01046 be replaced any time the shaft and bear ings are removed.
OM-01046 When installing the shaft and bearings into the bearing bore, push against the outer race. Never hit the balls or ball cage. Press the outboard oil seal (18) into the bearing cap (12) with the lip positioned as shown in Figure 2. Replace the bearing cap gasket (11), and secure the bearing cap with the hardware (13 and 14). Be careful not to damage the oil seal lip on the shaft keyway. T SERIES flammable. Use them only in a well ven tilated area free from excessive heat, sparks, and flame.
T SERIES OM-01046 RETAINER SEAL PLATE SPRING O‐RINGS IMPELLER SLEEVE O‐RING IMPELLER SHIMS IMPELLER SHAFT ROTATING ELEMENT BELLOWS STATIONARY ELEMENT INTEGRAL SHAFT SLEEVE SHEAR RING (SHEARED) SPRING CENTERING WASHER STATIONARY SEAT DRIVE BAND Figure 5. 46513-150 Cartridge Seal Assembly This seal is not designed for operation at temperatures above 160 F (71 C). Do not use at higher operating temperatures. If the seal plate was removed, install the seal plate gasket (4).
OM-01046 T SERIES O‐RING ENGAGED WITH SEAL PLATE BORE Measure the impeller‐to‐seal plate clearance, and remove impeller adjusting shims to obtain the proper clearance as described in Impeller Instal lation and Adjustment. If necessary to reuse an old seal in an emer gency, carefully separate the rotating and station ary seal faces from the bellows retainer and sta tionary seat. SHEAR RING (UNSHEARED) Figure 6.
T SERIES OM-01046 the pipe should be slightly larger than the O.D. of the shaft sleeve. Slide the rotating portion of the seal (consisting of the integral shaft sleeve, spring centering washer, spring, bellows and retainer, and rotating element) onto the shaft until the seal faces contact. Proceed with Impeller Installation and Adjust ment. Impeller Installation (Figure 2) Inspect the impeller, and replace it if cracked or badly worn.
OM-01046 T SERIES reach through the suction port with a feeler gauge and measure the gap. Add or subtract rotating as sembly shims accordingly. Suction Check Valve Installation (Figure 1) Inspect the check valve assembly (29), and re place it if badly worn. NOTE The check valve assembly must be replaced as a complete unit. Individual parts are not sold sepa rately.
T SERIES OM-01046 Be sure the pump and power source have been properly lubricated, see LUBRICATION. Over‐lubrication can cause the bearings to over‐ heat, resulting in premature bearing failure. Remove the fill cover assembly (36) and fill the pump casing with clean liquid. Reinstall the fill cover and tighten it. Refer to OPERATION, Section C, before putting the pump back into service. The white reflector in the sight gauge must be posi tioned horizontally to provide proper drainage.
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 MANSFIELD, OHIO GORMAN‐RUPP OF CANADA LIMITED ST.
