Regenerative Turbine Pump Installation Operation Maintenance Instruction Bulletin #: IOM – RGT0700 - Rev. C Manufacturers of Quality Pumps, Controls and Systems Engineered Pump Operations 2883 Brighton-Henrietta Townline Road Rochester, New York 14623 Telephone: (585) 292-8000 Fax: (585) 424-5619 http://www.pulsa.com pulsa@idexcorp.
ISOCHEM RGT FACTORY SERVICE POLICY If you are experiencing a problem with your Isochem pump, first review the troubleshooting guide. If the problem is not covered or cannot be solved, please contact your local authorized Sales Representative or our Technical Service Department at (585) 292-8000 for further assistance. Trained individuals are available to diagnose your problem and arrange a solution.
Table of Contents 1. INTRODUCTION ..................................................................................................................................... 1 2. SAFETY CONSIDERATIONS .................................................................................................................... 3 3. EQUIPMENT INSPECTION ....................................................................................................................... 3 4. INSTALLATION REQUIREMENTS .......................
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Conventions For the remainder of this bulletin, the following Conventions are in effect. A WARNING DEFINES A CONDITION THAT COULD CAUSE DAMAGE TO BOTH THE EQUIPMENT AND THE PERSONNEL OPERATING IT. PAY CLOSE ATTENTION TO ANY WARNING. Notes are general information meant to make operating the equipment easier. Change History Rev # Date Author Section Nature of Change A 5/22/00 7/26/00 7/26/00 RM CA RM CA 6-30-2005 BMJ Appendix E Appendix D 5.
1. Introduction The Isochem® Regenerative Turbine pump (RGT) is uniquely different from the more familiar types of pumps. As the pumped liquid progresses from suction to discharge, it is continuously circulated between the impeller vanes and the walls of the flow passage in a helical path, the axis of which coincides with the flow passage. This process results in a significantly higher buildup of pressure than that which occurs in the similar but simpler centrifugal pump.
Standard Isochem RGT pumps are close-coupled (motor mounted directly to the rear of the pump) which provides greater assembled strength, enclosure of moving parts, and compact design. An optional power frame unit is available if required for motor compatibility (see Appendix G). All Isochem pumps transmit rotation from the motor shaft to the impeller shaft by means of a magnetic drive coupling. An encapsulated driven magnet assembly is installed on the end of the impeller shaft.
2. Safety Considerations • Read and understand all related instructions and documentation before attempting to install or maintain this equipment • Keep this and all documents (specification sheets, shipment records, maintenance records) in a safe place which is accessible to those who operate or maintain this equipment. • Observe all special instructions, notes, and cautions. • Act with care and exercise good common sense and judgment during all installation, adjustment, and maintenance procedures.
4. Installation Requirements The pump installation site should provide easy access for routine maintenance and when possible to protect the pump from the elements and from leaks or drips from nearby process equipment. Figure 2 IN A POWER FRAME (THAT IS, NOT CLOSE-COUPLED) INSTALLATION, THE USE OF A LOWBACKLASH OR RELATIVELY RIGID MOTOR COUPLING IS RECOMMENDED TO PREVENT MAGNETIC DE-COUPLING AT STARTUP OR UNDER WIDELY VARYING PROCESS CONDITIONS.
1. Bolt the pump down firmly to the mounting surface. Provide for air movement over the electric motor as required. The pump is functionally symmetrical so that the suction and discharge ports can be reversed (with direction of rotation) and the housing (with cover) can be rotated to suit the installation if required. Refer to Figure 3, for typical installation and the required relation between rotation and direction of flow. SUCTION PORT SUCTION PORT DISCHARGE PORT DISCHARGE PORT Figure 3 2.
7. Do not spring piping, either suction or discharge, when mating up to the pump. Use supports or hangers at intervals as required. When necessary, provide for thermal expansion and contraction so that no strain is placed upon the pump. 8. Check all bolts and nuts for tightness. Correct any conditions that could cause destructive vibration or leakage. 9. When required, provide a proper system for containment can flush and/or drain. 10.
5. Startup and Operation • • • DO NOT DEAD-HEAD DO NOT RUN DRY DO NOT OPERATE AT FLOW RATES BELOW 2-3 GPM EXCEPT MOMENTARILY Prior to operation, recheck the suction system to be sure NPSH available to the pump is adequate. Reference Appendix G – Performance Curves for more information. Make sure all suction piping is air tight and clean. If the pump is equipped with a Power Frame motor mounting arrangement, consult Appendix F for oil fill instructions. Turn the pump over by hand.
6. Maintenance The timing for maintenance of the pump is established primarily on past performance. Each installation is different. Therefore detailed maintenance records of past performance can be invaluable for determining future preventative maintenance intervals. During routine pump inspections pay particular attention to the bearings, wearplates, and impeller, as those areas will determine future maintenance intervals. For motor maintenance instructions consult the motor manufacturer.
6.2 Disassembling the No. 10 Pump The item numbers listed in parenthesis refer to the exploded drawings found in Appendix B. 1. Close the suction and discharge valves. 2. Disconnect the power source from the motor. 3. Flush and drain the pump, and disconnect the piping. 4. Drain the containment can through the rear housing drain plug (item 27) (refer to Figure 4). 5.
13. If removal of the drive magnet is required, perform the following steps: a) Remove the guard screw (item 37) from the guard. b) Remove the guard (item 38) from around the spool. c) Remove the casing bolts (items 35) and withdraw the casing (item 20). d) Loosen the drive magnet assembly set screw (item 24). Rotate the drive magnet assembly until the set screw is visible through one of the slots in the spool (item 29). Use a 1/8-inch Allen wrench to loosen the set screw.
6.3 Disassembling the No. 12 Pump The item numbers listed in parenthesis refer to the exploded drawings found in Appendix B. 1. Close the suction and discharge valves. 2. Disconnect the power source from the motor. 3. Flush and drain the pump, and disconnect the piping. 4. Drain the containment can through the rear housing drain plug (item 27) (refer to Figure 4). 5.
11. If removal of the drive magnet is required, perform the following steps: a) Remove the guard screw (item 37) from the guard. b) Remove the guard (item 38) from around the spool. c) Remove the casing bolts (items 35) and withdraw the casing (item 20). d) Loosen the drive magnet assembly set screw (item 24). Rotate the drive magnet assembly until the set screw is visible through one of the slots in the spool (item 29). Use a 1/8-inch Allen wrench to loosen the set screw.
6.4 Inspection Figure 4 6.4.1 Flow Channel Inspection The rear housing has two cooling ports located in the flow channel that divert essential cooling fluid to the magnetic drive chamber. Check and clear these ports if necessary using a piece of wire or a drill bit of appropriate size The Cooling Port size in standard pumps is 5/32” (4 mm).
6.4.2 Wear Plate Inspection Inspect the two wear plates (items 11) for damage or wear. The carbon wear plates are identical and are recessed in the front cover and rear housing. They should protrude slightly above the surfaces in which they are mounted (Verify this by dragging your fingernail across the mounting surface. Your fingernail should catch slightly as it passes over the wear plate.) If the wear plate does not protrude above the housing, replace it.
6.5 Parts Replacement The item numbers listed in parenthesis refer to the exploded drawings found in Appendix B. A dental–type tool such as the one shown to the right works well when removing the wear plates and bearings. 6.5.1 Wear Plates 1. Two small opposed holes are provided in the housing and cover adjacent to the outer surface of each wear plate (refer to Figure 4).
6.5.3 Reassembling the No. 10 Pump Trial fit new magnet assemblies on the shaft prior to final assembly. The magnet assembly must be free to move axially along the shaft between the retaining rings. Sharp edges especially around key ways may require hand dressing with a fine file so that this free movement is achieved. 1. If the motor has been removed or replaced, position it on its mounting bracket and tighten. 2.
15. Install the Driven Magnet Assembly (item 18) on the drive shaft (item 4). a) Install the Driven Magnet Assembly inner retaining ring (item 14) by carefully expanding it over the end of the impeller assembly (item 6) and pushing it along the shaft past the front groove for the outer retaining ring, which will require that the ring be carefully expanded no more than necessary to pass the groove before arriving and seating fully in the back groove.
17. Install a new containment can “O”-ring (item 28) on the back of the rear housing (item 1). Placing the “O”-ring in warm water prior to installation will momentarily soften the material making installation easier. THE MAGNETIC ATTRACTIVE FORCE IS CONSIDERABLE. TAKE CARE NOT TO CHIP THE MAGNETS AND TO AVOID PINCHING OF FINGERS WHEN THE ASSEMBLY SNAPS TOGETHER. 18. Install the rear housing (item 1) to the casing (item 20). Magnetic attraction will draw the rear housing and the casing together.
g) Remove the pipe plug (item 27) from the central face of the front cover to expose the tapped hole in the end of the shaft and thread a 1/4-20 screw into the shaft to rotate the shaft (refer to Figure 6). With the screw bottomed hand-tight in the shaft, free axial play of the shaft relative to the impeller can be confirmed by alternately pushing and pulling the screw. This condition is essential since it confirms that the impeller floats axially on the shaft.
6.5.4 Reassembling the No. 12 Pump Trial fit new magnet assemblies and impellers on the assorted shafts prior to final assembly. The magnet assembly and impeller must be free to move longitudinally along the shaft between the retaining rings. Sharp edges especially around key ways may require hand dressing with a fine file so that this free movement is achieved. 1. If the motor has been removed or replaced, position it on its mounting bracket and tighten. 2.
13. Position the guard (item 36) around the spool (item 29) and insert and tighten the guard screw (item 37). 14. Install the Driven Magnet Assembly (item 18) on the drive shaft (item 4).
d) Install the Impeller outer retaining ring (item 14) by carefully expanding it over the end of the drive shaft (item 4) and pushing it into the its groove. Verify that the Impeller floats freely back and forth between the retaining rings. This requires that both retaining rings be fully seated in their respective grooves. 17. Install the containment can (item 19) in the casing. 18. Install a new containment can “O”-ring (item 28) on the back of the rear housing (item 1).
k) Remove the pipe plug (item 27) from the central face of the front cover to expose the tapped hole in the end of the shaft and thread a 1/4-20 screw into the shaft to rotate the shaft (refer to Figure 9). With the screw bottomed hand-tight in the shaft, free axial play of the shaft relative to the impeller can be confirmed by alternately pushing and pulling the screw. This condition is essential since it confirms that the impeller floats axially on the shaft.
7. Troubleshooting Guide Symptom Probable Cause No Liquid Delivered Pump not primed. Motor Incorrectly wired. Air leak in suction. Rotation direction incorrect. Suction and/or discharge valves closed. Suction lift too high. Magnetic coupling decoupled. Low Liquid Delivery Remedy Discharge head higher than calculated. Prime pump. Check wiring diagram. Locate and repair. Reverse rotation. Open valves. Do not exceed vapor pressure of liquid. Stop motor, eliminate blockage or jamming and restart.
Appendix A – Specifications Pump Model Maximum Flow, GPM (LPM) @ 3450 RPM Maximum Flow, GPM (LPM) @ 2875 RPM Maximum Flow, GPM (LPM) @ 1725 RPM Maximum Head, FT ( METERS) Maximum Discharge Pressure, PSIG (Bar) Maximum Suction Pressure, PSIG (Bar) Suction Size Discharge Size Temperature Range, Neodymium Temperature Range, Samarium Maximum Viscosity* cp Speeds RPM Weight, LBS, (KG) Maximum Power RGT 10 RGT 12 14.5 (55.0) 11.0 (41.7) 4.5 (17.1) 427 (130) 300 (20.7) 100 (6.
Appendix C – Exploded Drawing 26
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Appendix D – Options POSITION 1 REGENERATIVE TURBINE MAGNETICALLY DRIVEN SEALLESS RGT = C-FACE MOTOR MOUNTING ASSEMBLY. (1) – 10, 12 POSITION 2 PUMP SIZE Port Size Inches FNPT/BSPT Capacity MAX. GPM (M3/H) Differential Head MAX. Ft. (M) 10 12 1.00” 14.5 (3.29) 427 (130) 1.00” 23.3 (5.
Appendix E – Bill of Materials SECTION: PAGE: EFFECTIVE: SUPERSEDES: ISOCHEM RGT SERIES PUMP CONSOLIDATED BILL OF MATERIALS DESCRIPTION REGENERATIVE TURBINE 200 06/27/00 03/06/00 POSITION 3 STANDARD PUMP METALLURGIES, PORT CONN 316SS ALLOY C (A) OR (K) (C) OR (M) PART No. MATL PART No.
SECTION: PAGE: EFFECTIVE: SUPERSEDES: ISOCHEM RGT SERIES PUMP CONSOLIDATED BILL OF MATERIALS DESCRIPTION REGENERATIVE TURBINE 201 06/27/00 03/06/00 POSITION 3 STANDARD PUMP METALLURGIES 316SS ALLOY C (A) OR (K) (C) OR (M) PART No. MATL PART No.
SECTION: PAGE: EFFECTIVE: SUPERSEDES ISOCHEM RGT SERIES PUMP CONSOLIDATED BILL OF MATERIALS DESCRIPTION REGENERATIVE TURBINE 202 06/27/00 03/06/00 POSITION 3 STANDARD PUMP METALLURGIES 316SS ALLOY C (A) OR (K) (C) OR (M) PART No. MATL PART No.
SECTION: PAGE: EFFECTIVE: SUPERSEDES ISOCHEM RGT SERIES PUMP CONSOLIDATED BILL OF MATERIALS DESCRIPTION REGENERATIVE TURBINE 203 08/03/00 NEW POSITION 3 STANDARD PUMP METALLURGIES 316SS ALLOY C (A) OR (K) (C) OR (M) PART No. MATL PART No.
Appendix F – Power Frame Assembly 34
Power Frame Maintenance General Maintenance: Fill power frame oil cup (item 9) to the “oil level” line, about ½” from the top edge of the cup. Use standard motor oil, SAE-10W-40, 10W-30, SW-30, or equivalent. Drain and change oil after every 2,000 hours of operation. Increase frequency of oil changes if operating in an adverse environment, for example high moisture, very high or low temperatures, etc. Disassembly: 1. Remove bearing cap bolts (item 6) 2.
Appendix G – Performance Curves 36
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Bulletin #: IOM – RGT0700 - Rev. C Engineered Pump Operations 2883 Brighton-Henrietta Townline Road Rochester, New York 14623 Telephone: (585) 292-8000 Fax: (585) 424-5619 http: //www.pulsa.com pulsa@idexcorp.
