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1. nmo gt Model MSB2 Page 4 msb2dl3sm REV0614 PROBLEM Pump will not cycle Note Always disconnect air supply to relieve air pressure before disassembling any portion of pump POSSIBLE CAUSES A Discharge hose or line plugged or discharge head requirement greater than air supply pressure Disconnect discharge line to check B Spool in air distribution valve not shifting Remove end cap and check spool must slide freely C Diaphragm ruptured Air will escape out discharge line in this case D Blockage in diaphragm chamber preventing movement Shut off air supply and reopen after pressure is relieved PROBLEM Uneven discharge flow Indicates one chamber not operating properly POSSIBLE CAUSES A Check valve not sealing properly in one chamber B Diaphragm failure in one chamber C Air leak at suction manifold joint or elbow flange one side For additional information see the Warren Rupp Troubleshooting Guide WARRANTY This unit is guaranteed for a period of five years against defective material and workmanship Grounding The Pump ONE EYELET IS FASTENED TO THE PUMP HARDWARE ONE EYELET IS INSTALLED TO A TRUE EARTH GROUND REQUIRES A 5 16 OR 8MM MAXIMUM DIAMETER BOLT msb2dl3sm REVO614 This 8 foot long 244 centimeters Ground Strap part number 920 025 000 can be ordered as a service item To reduce the risk of static electrical sparking this pump must be grounded Check2. Ball Check Valve Manifold Suction MSB2 B Only Manifold Suction Manifold Discharge NPT Manifold Discharge Stat O Seal Capscrew Hex Head Washer Lock Nut Hex Not used on Cl units Chamber Outer Muffler Exhaust Base Strainer MSB2 A Manifold Suction MSB2 A Capscrew Hex Head MSB2 A Cover Suction MSB2 A Capscrew Hex Head MSB2 A Washer Lock MSB2 A Pad Wear Pad Wear Handle Bracket Handle Bracket Handle Main Air Valve Assembly Includes Items 9 10 11 13 14 15 16 NNNN Ns saahaan AN OASNNN _ PS P msb2dl3sm REV0614 msb2dl3sm REVO614 Model MSB2 Page 11
3. SERVICE AND OPERATING MANUAL SANDPIPER Models MSB2 and MSB2 B A WARREN RUPP PUMP BRAND Ball Valve Type 3 Mine Construction Duty FLUID amp METERING Table of Contents Principle OF OCF A e o ANE 1 Installation and Ae Dans eo ene 1 AI SUD ONY e o aie UA o 1 PANG Cl un Un Le E 2 AF Valve LUCO nadaa 2 ESADS Plus Externally Serviceable Air Distribution System 2 aN gt q y Es E 3 EE USES arica its idos 3 Check Valve Genvicnmg iii 3 Beie e leen o PPP A 3 PRE AS SS 1410 E 4 PIVA A E E E A 4 PIIOFVANC et Ee 4 Service Instructions Troubleshooting 4 5 A a 5 Ke e Pe A 6 Important Safety Information ii 6 Jee VU AON ste T Mates COUE eer 8 Composite Repair Parts st 9 10 Composite Repair Dra wing 11 Warren Rupp Inc A Unit of IDEX Corporation P O Box 1568 Mansfield Ohio 44901 1568 USA Telephone 419 524 8388 Fax 419 522 7867 warrenrupp com Model MSB2 OCopyright 2014 IDEX AODD Inc All rights reserved SERVICE AND OPERATING MANUAL SANDPIPER Models MSB2 and MSB2 B A WARREN RUPP PUMP BRAND Ball Valve FLUID amp METERING Ex Il2GD T5 C Type g Mine Construction Duty PRINCIPLE OF PUMP OPERATION This ball valve pump is powered by compressed air and is a 1 1 pressure ratio design lt alternately pressurizes the inner side of one diaphragm chamber while simultaneously exhausting the other inner chambe
4. Retaining Ring 1 7 360 041 379 Gasket Valve Body 1 8 560 001 360 O Ring 2 9 095 043 156 Body Valve 1 10 132 014 358 Bumper Valve Spool 2 11 165 011 157 Cap End 2 12 360 048 425 Gasket Valve Body 1 13 360 010 425 Gasket End Cap 2 14 560 020 360 O Ring 6 15 031 012 000 Sleeve 8 Spool Set 1 16 170 032 330 Capscrew Hex Head 8 17 170 045 330 Capscrew Hex Head 4 18 132 002 360 Bumper Diaphragm 2 19 196 001 157 Chamber Inner 2 20 286 007 365 Diaphragm 2 286 007 360 Diaphragm 2 286 007 354 Diaphragm 2 21 560 022 360 O Ring 2 22 685 007 120 Rod Diaphragm 1 23 170 023 330 Capscrew Hex Head 16 24 170 024 330 Capscrew Hex Head 8 25 618 003 330 Plug Pipe SS amp Alloy C Qty 2 4 26 900 006 330 Washer Lock 8 27 612 215 330 Plate Diaphragm 2 28 612 224 330 Plate Outer 2 29 170 010 115 Capscrew 2 31 545 007 330 Nut Hex 16 32 722 040 365 Seat Valve 4 722 040 360 Seat Valve 4 722 040 364 Seat Valve 4 msb2dl3sm REV0614 Model MSB2 Page 9 TOTAL NO PARTNUMBER DESCRIPTION e OD ITEM 33 050 017 365 050 017 360 050 017 354 34 518 032 156 518 032 156E 35 518 033 156 518 033 156E 36 902 003 000 37 170 082 330 38 900 003 330 39 545 008 330 41 196 047 156 42 530 036 000 48 800 012 156 49 518 044 156 50 170 055 330 51 258 016 156 52 170 035 330 53 900 006 330 54 570 009 360 570 009 365 55 115 161 080 56 115 162 080 57 405 012 330 Not Shown 031 019 156 Model MSB2 Page 10 Ball Check Valve Ball Check Valve
5. start up open an air valve approximately 1 2 to 3 4 turn After the unit primes an air valve can be opened to increase flow as desired If opening the valve increases cycling rate but does not increase flow rate cavitation has occurred and the valve should be closed slightly Forthe most efficient use of compressed air and the longest diaphragm life throttle the air inlet to the lowest cycling rate that does not reduce flow A NOTE ABOUT AIR VALVE LUBRICATION The Sandpiper pump s pilot valve and main air valve assemblies are designed to operate WITHOUT lubrication This is the preferred mode of operation There may be instances of personal preference or poor quality air supplies when lubrication of the compressed air supply is required The pump air system will operate with properly lubricated compressed air supplies Proper lubrication of the compressed air supply would entail the use of an air line lubricator available from Warren Rupp set to deliver one drop of 10 wt non detergent oil for every 20 SCFM of air the pump consumed at its point of operation Consult the pump s published Performance Curve to determine this It is important to remember to inspect the sleeve and spool set routinely It should move back and forth freely This is most important when the air supply is lubricated If a lubricator is used oil accumulation will over time collect any debris from the compressed air This can prevent the pump from operating pro
6. the local electrical code for detailed grounding instruction and the type of equipment required 4 WARNING Take action to prevent static sparking Fire or explosion can result especially when handling flammable liquids The pump piping valves containers or other miscellaneous equipment must be grounded Model MSB2 Page 5 IMPORTANT SAFETY INFORMATION AA IMPORTANT Read these safety warnings and instructions in this manual completely before installation and start up of the pump It is the responsibility of the purchaser to retain this manual for reference Failure to comply with the recommendations stated in this manual will damage the pump and void factory warranty CAUTION Before pump operation inspect all gasketed fasteners for looseness caused by gasket creep Re torque loose fasteners to prevent leakage Follow recommended torques stated in this manual CAUTION Pump not designed tested or certified to be powered by compressed natural gas Powering the pump with natural gas will void the warranty WARNING In the event of diaphragm rupture pumped material may enter the air end of the pump and be discharged into the atmosphere If pumping a product which is hazardous or toxic the air exhaust must be piped to an appropriate area for safe disposition WARNING Take action to prevent static sparking Fire or explosion can result especially when handling flammable li
7. 6 Stainless Steel Alloy Type 316 Stainless Steel Electro Polished Alloy C Alloy Type 316 Stainless Steel Hand Polished 303 Stainless Steel 302 304 Stainless Steel 440 C Stainless Steel Martensitic 416 Stainless Steel Wrought Martensitic 410 Stainless Steel Wrought Martensitic Hardcoat Anodized Aluminum 2024 T4 Aluminum 6061 T6 Aluminum 6063 T6 Aluminum 2024 T4 Aluminum 2023 T351 Almag 35 Aluminum 356 T6 Aluminum 356 T6 Aluminum Die Cast Aluminum Alloy 380 Aluminum Alloy SR 319 Anodized Aluminum Brass Yellow Screw Machine Stock Cast Bronze 85 5 5 5 Bronze SAE 660 Bronze Bearing Type Oil Impregnated Die Cast Zinc Copper Alloy Carbon Steel Black Epoxy Coated Carbon Steel Black PTFE Coated Aluminum Black Epoxy Coated Stainless Steel Black PTFE Coated Aluminum Black PTFE Coated PVDF Coated Zinc Plated Steel Chrome Plated Steel Aluminum Electroless Nickel Plated Model MSB2 Page 8 Material Codes The Last 3 Digits of Part Number 333 335 336 337 340 342 353 354 355 356 357 358 359 360 361 363 364 365 366 368 370 371 374 375 378 379 405 408 425 426 440 465 500 501 502 503 505 506 520 521 540 541 542 544 550 551 552 Carbon Steel Electroless Nickel Plated Galvanized Steel Zinc Plated Yellow Brass Silver Plated Steel Nickel Plated Filled Nylon Geolast Color Black Injection Molded 203 40 Santo prene
8. 637 PTFE FKM Fluorocarbon PTFE 638 PTFE Hytrel PTFE 639 Nitrile TFE 643 Santoprene EPDM 644 Santoprene PTFE 650 Bonded Santoprene and PTFE 654 Santoprene Diaphragm PTFE Overlay Balls and seals 656 Santoprene Diaphragm and Check Balls EPDM Seats 661 EPDM Santoprene Delrin and Hytrel are registered tradenames of E I DuPont Gylon is a registered tradename of Garlock Inc Nylatron is a registered tradename of Polymer Corp Santoprene is a registered tradename of Monsanto Corp Rulon Il is a registered tradename of Dixion Industries Corp Ryton is a registered tradename of Phillips Chemical Co Valox is a registered tradename of General Electric Co Warren Rupp SANDPIPER Portapump Tranquilizers and SludgeMaser are registered tradenames of IDEX AODD Inc msb2dl3sm REV0614 SERVICE AND OPERATING MANUAL SANDPIPER Models MSB2 and MSB2 B A WARREN RUPP PUMP BRAND Ball Valve FLUID amp METERING Ex Il2GD T5 C Type g Mine Construction Duty ITEM TOTAL NO PART NUMBER DESCRIPTION RQD 1 070 006 170 Bearing Sleeve 2 2 114 002 156 Bracket Intermediate 1 3 720 004 360 Seal U Cup 2 4 135 016 162 Bushing Threaded w O Ring 5 620 011 114 Plunger Actuator 2 6 095 073 000 Pilot Valve Body Assembly 1 6 A 095 070 551 Valve Body 1 6 B 755 025 000 Sleeve w O Ring 1 6 C 560 033 360 O Ring Sleeve 4 6 D 775 026 000 Spool w O Ring 1 6 E 560 023 360 O Ring Spool 2 6 F 675 037 080
9. Duro 40D 5 Color RED Thermal Plastic Hytrel Injection Molded Polyurethane Urethane Rubber Some Applications Compression Mold Urethane Rubber Nitrile Rubber Color coded RED FDA Accepted Nitrile FKM Fluorocarbon Color coded YELLOW E P D M Rubber Color coded BLUE Neoprene Rubber Color coded GREEN Food Grade Nitrile Food Grade EPDM Butyl Rubber Color coded BROWN Philthane Tuftane Carboxylated Nitrile Fluorinated Nitrile High Density Polypropylene Conductive Nitrile Cellulose Fibre Cork and Neoprene Compressed Fibre Blue Gard Vegetable Fibre Fibre Delrin 500 Delrin 570 Conductive Acetal ESD 800 Conductive Acetal Glass Filled Acrylic Resin Plastic Delrin 150 Injection Molded PVDF Natural color Conductive PVDF Nylon Nylon Nylon Nylon Injection Molded Polyethylene Glass Filled Polypropylene Unfilled Polypropylene 553 Unfilled Polypropylene 555 Polyvinyl Chloride 556 Black Vinyl 557 Conductive Polypropylene 558 Conductive HDPE 559 Glass Filled Conductive Polypropylene 570 Rulon Il 580 Ryton 590 Valox 591 Nylatron G S 592 Nylatron NSB 600 PTFE virgin material Tetrafluorocarbon TFE 601 PTFE Bronze and moly filled 602 Filled PTFE 603 Blue Gylon 604 PTFE 606 PTFE 607 Envelon 608 Conductive PTFE 610 PTFE Integral Silicon 611 PTFE Integral FKM 632 Neoprene Hytrel 633 FKM Fluorocarbon PTFE 634 EPDM PTFE 635 Neoprene PTFE
10. d cap gasket and bumper on the valve body Using the arbor press or bench vise that was used in disassembly carefully press the sleeve back into the valve body without shearing the o rings You may have to clean the surfaces of the valve body where the end caps mount Material may remain from the old gasket Old material not cleaned from this area may cause air leakage after reassembly Take care that the bumper stays in place allowing the sleeve to press in all the way Reinstall the spool opposite end cap gasket and bumper on the valve body After inspecting and cleaning the gasket surfaces on the valve body and intermediate reinstall the valve body on the pump using new gaskets Tighten the four hex head capscrews evenly and in an alternating cross pattern AIR EXHAUST If a diaphragm fails the pumped liquid or fumes can enter the air end of the pump and be exhausted into the atmosphere When pumping hazardous or toxic materials pipe the exhaust to an appropriate area for safe disposition This pump can be submerged if materials of construction are compatible with the liquid The air exhaust must be piped above the liquid level Piping used for the air exhaust must not be smaller than 1 2 54 cm Reducing the pipe size will restrict air flow and reduce pump performance When the product source is at a higher level than the pump flooded suction pipe the exhaust higher than the product source to prevent siphoning spills See page 7 Fr
11. e the exhaust higher than the product source to prevent siphoning spills See illustration 3 ILLUSTRATION 2 at right MUFFLER MUFFLER CONVERTING THE PUMP FOR PIPING THE EXHAUST AIR The following steps are necessary to convert the pump to pipe the exhaust air LIQUID away from the pump LEVEL The air distribution valve has 3 4 NPT threads for piped exhaust 1 DIAMETER AIR EXHAUST PIPING SUCTION IMPORTANT INSTALLATION NOTE LINE The manufacturer recommends installing a flexible conductive hose or connection between the pump and any rigid plumbing This reduces stresses on the molded threads of the air exhaust port Failure to do so may result in damage to the air distribution ILLUSTRATION 3 valve body Any piping or hose connected to MUFFLER the pump s air exhaust port must be conductive and physically supported Failure to support these connections could also result in damage to the air distribution 1 DIAMETER AIR valve body LIQUID EXHAUST PIPING LEVEL SUCTION LINE msb2dl3sm REV0614 Model MSB2 Page 7 000 010 012 015 020 025 080 100 110 111 112 113 114 115 117 120 123 148 149 150 151 152 154 155 156 157 158 159 162 165 166 170 175 180 305 306 307 308 309 310 330 331 332 Assembly sub assembly and some purchased items Cast Iron Powered Metal Ductile Iron Ferritic Malleable Iron Music Wire Carbon Steel AISI B 1112 Alloy 20 Alloy Type 31
12. eezing or icing up of the air exhaust can occur under certain temperature and humidity conditions Use of an air dryer unit should eliminate most icing problems BETWEEN USES When used for materials that tend to settle out or transform to solid form the pump should be completely flushed after each use to prevent damage Product remaining in the pump between uses could dry out or settle out This could cause problems with valves and diaphragms at re start In freezing temperatures the pump must be drained between uses in all cases CHECK VALVE SERVICING Need for inspection or service is usually indicated bt poor priming unstable cycling reduced performance or the pump s cycling but not pumping Inspect the surfaces of both check valves and seats for wear or damage that could prevent proper sealing If pump is to prime properly valves must seat air tight DIAPHRAGM SERVICING Remove the eight bolts four each side securing the manifold assemblies to the outer chambers Remove the eight bolts securing the outer chamber to the inner chamber Remove the diaphragm assembly outer plate diaphragm inner plate by turning the assembly counterclockwise using a 16 16 2 38 cm wrench on the outer plate lugs To disassemble the diaphragm assemblies secure in a vise and turn the outer plate counterclockwise using the 16 16 wrench Procedures for reassembling the diaphragms are the reverse of the above The dia phragms must be installed with
13. encourage pump users to recycle worn out parts and pumps whenever possible after any hazardous pumped fluids are thoroughly flushed CE Ex Il2GD T5 Pump complies with EN809 Pumping Direc tive Directive 2006 42 EC Machinery according to Annex VIII Pump complies with Directive 94 9 EC EN13463 1 Equipmentforusein Potentially Explosive Environments Forref erence to the directive certificates visit www warrenrupp com The Technical File No AX1 is stored at KEMA Notified Body 0344 under Document 203040000 Model MSB2 Page 6 msb2dl3sm REV0614 PUMPING HAZARDOUS LIQUIDS CONVERTED EXHAUST ILLUSTRATION When a diaphragm fails the pumped liquid or fumes enter the air end of the pump ILLUSTRATION 1 Fumes are exhausted into the surrounding environment When pumping hazardous PUMP INSTALLATION AREA or toxic materials the exhaust air must SAFE AIR be piped to an appropriate area for safe EXHAUST disposal See illustration 1 at right DISPOSAL This pump can be submerged if the pump AREA materials of construction are compat 4 DIAMETER AIR ible with the liquid being pumped The air EXHAUST PIPING exhaust must be piped above the liquid level See illustration 2 at right Piping used for the air exhaust must not be smaller Se than 1 2 54 cm diameter Reducing the pipe size will restrict air flow and reduce pump performance When the pumped e product source is at a higher level than the pump flooded suction condition pip
14. nd of the diaphragm stroke by the diaphragm plate coming in contact with the end of the pilot spool This pushes it into position for shifting of the air distribution valve The chambers are manifolded together with a suction and discharge flap type check valve for each chamber maintaining flow in one direction through the pump INSTALLATION amp START UP Locate the pump as close to the product being pumped as possible keeping suction line length and number of fittings to a minimum Do not reduce line size For installations of rigid piping short flexible sections of hose should be installed between pump and piping This reduces vibration and strain to the piping system A Warren Rupp Tranquilizer surge suppressor is recommended to further reduce pulsation in flow This pump was tested at the factory prior to shipment and is ready for operation It is completely self priming from a dry start for suction lifts of 10 feet 3 05 meters or less For suction lifts exceeding 20 feet of liquid fill the chambers with liquid prior to priming AIR SUPPLY Air supply pressures cannot exceed 125 psi 8 61 bar Connect the pump air inlet to an air supply of sufficient capacity and pressure required for desired performance When the air line is solid piping use a short length of flexible hose not less than 3 4 19mm in diameter between pump and piping to eliminate strain to pipes msb2dl3sm REV0614 Model MSB2 Page 1 AIR INLET 8 PRIMING For
15. of oil dirt or other contaminants from the pump s air supply or from a failed diaphragm may prevent the spool from moving freely This can cause the spool to stick in a position that prevents the pump from operating If this is the case the sleeve and spool set should be removed from the valve body for cleaning and further inspection Remove the spool from the sleeve Using an arbor press or bench vise with an improvised mandrel press the sleeve from the valve body Take care not to damage the sleeve At this point inspect the o rings on the sleeve for nicks tears or abrasions Damage of this sort could happen during assembly or servicing A sheared or cut o ring can allow the pump s compressed air supply to leak or bypass within the air valve assembly causing the pump to leak compressed air from the pump air exhaust or not cycle properly This is most noticeable at pump dead head or high discharge pressure conditions Replace any of these o rings as required or set up a routine preventive maintenance schedule to do so on a regular basis This practice should include cleaning the spool and sleeve components with a safety solvent or equivalent inspecting for signs of wear or damage and replacing worn components Model MSB2 Page 2 msb2dl3sm REV0614 To re install the sleeve and spool set lightly lubricate the o rings on the sleeve with an o ring assembly lubricant or lightweight oil such as 10 wt air line lubricant Re install one en
16. on valve body from the pump and lifting the pilot valve body out of the intermediate housing Most problems with the pilot valve can be corrected by replacing the o rings Always grease the spool prior to inserting it into the sleeve If the sleeve is removed from the body reinsertion must be at the chamfered side Grease the o rings to slide the sleeve into the valve body Securely insert the retaining ring around the sleeve When reinserting the pilot valve push both plungers located inside the intermediate bracket out of the path of the pilot valve spool ends to avoid damage PILOT VALVE ACTUATOR Bushings for the pilot valve actuators are threaded into the intermediate bracket from the outside The plunger may be removed for inspection or replacement First remove the air distribution valve body and the pilot valve body from the pump The plungers can be located by looking into the intermediate It may be necessary to use a fine piece of wire to pull them out The bushing can be turned out through the in ner chamber by removing the outer chamber assembly Replace the bushings if pins have bent TROUBLESHOOTING PROBLEM Pump cycles but will not pump Note higher suction lifts require faster cycling speed for priming POSSIBLE CAUSES Air leak in suction line Excessive suction lift Check valve not seating properly Leakage at joint of suction manifold or elbow flange Suction line or strainer plugged Diaphragm ruptured
17. perly Water in the compressed air supply can create problems such as icing or freezing of the exhaust air causing the pump to cycle erratically or stop operating This can be addressed by using a point of use air dryer to supplement a plant s air drying equipment This device will remove excess water from the compressed air supply and alleviate the icing or freezing problem ESADS EXTERNALLY SERVICEABLE AIR DISTRIBUTION SYSTEM Please refer to the exploded view drawing and parts list in the Service Manual supplied with your pump If you need replacement or additional copies contact your local Warren Rupp Distributor or the Warren Rupp factory Literature Department at the number shown below To receive the correct manual you must specify the MODEL and TYPE information found on the name plate of the pump MODELS WITH 1 SUCTION DISCHARGE OR LARGER AND METAL CENTER SECTIONS The main air valve sleeve and spool set is located in the valve body mounted on the pump with four hex head capscrews The valve body assembly is removed from the pump by removing these four hex head capscrews With the valve body assembly off the pump access to the sleeve and spool set is made by removing four hex head capscrews each end on the end caps of the valve body assembly With the end caps removed slide the spool back and forth in the sleeve The spool is closely sized to the sleeve and must move freely to allow for proper pump operation An accumulation
18. quids The pump piping valves containers or other miscellaneous equipment grounded See A WARNING This pump is pressurized internally with air pressure during operation Always make certain that all bolting is in good condition and that all of the correct bolting is reinstalled during assembly WARNING When used for toxic or aggressive fluids the pump should always be flushed clean prior to disassembly AA WARNING Before doing any main tenance on the pump be certain all pressure is completely vented from the pump suction discharge piping and all other openings and connections Be certain the air supply is locked out or made non operational so that it cannot be started while work is being done on the pump Be certain that approved eye protection and protective clothing are worn all times in the vicinity of the pump Failure to follow these recommendations may result in serious injury or death AA WARNING Airborne particles and loud noise hazards Wear ear and eye protection WARNING Before maintenance or repair shut off the com pressed air line bleed the pressure and disconnect the air line from the pump The discharge line may be pressurized and must be bled of its pressure 4 WARNING Use safe practices when lifting RECYCLING Many components of SANDPIPER AODD pumps are made of recyclable materials see chart on page 8 for material specifications We
19. r This causes the diaphragms which are connected by a common rod to move endwise Air pressure is applied over the entire surface of the diaphragm while liquid is discharged from the opposite side The diaphragm operates under a balanced condition during the discharge stroke which allows the unit to be operated at discharge heads over 200 feet 61 meters of water head Since the diaphragms are connected by a common rod secured by plates to the center of the diaphragms one diaphragm performs the discharge stroke while the other is pulled to perform the suction stroke in the opposite chamber For maximum diaphragm life keep the pump as close to the liquid being pumped as possible Positive suction head in excess of 10 feet of liquid 3 048 meters may require a back pressure regulating device This will maximize diaphragm life Alternate pressuring and exhausting of the diaphragm chamber is performed by means of an externally mounted pilot operated four way spool type air distribution valve When the spool shifts to one end of the valve body inlet air pressure is applied to one diaphragm chamber and the other diaphragm chamber exhausts When the spool shifts to the opposite end of the valve body the porting of chambers is reversed The air distribution valve spool is moved by an internal pilot valve which alternately pressurizes one side of the air distribution valve spool while exhausting the other side The pilot valve is shifted at each e
20. their natural bulge to the outside toward the outer diaphragm plate Install the inner plate with the flat face against the diaphragm After all components are in position in a vise and hand tight tighten with a wrench to approximately 40 ft Ibs 54 23 Newton meters torque After both diaphragm assem blies have been assembled thread one assembly into the shaft hold the shaft near the middle in a vise with soft jaws to protect the finish Install this sub assembly into the pump and secure by placing the outer chamber on the end with the diaphragm This holds the assembly in place while the opposite side is installed Torque the last diaphragm assembly to 30 ft Ibs 40 67 Newton meters This final torquing will lock the diaphragm assemblies together Place the rernaining outer chamber on the open end and loosely tighten the bolts Replace the manifold assemblies to square the flanges before final tightening of the remaining bolts the diaphragm assemblies together Place the rernaining outer chamber on the open end and loosely tighten the bolts Replace the manifold assemblies to square the flanges before final tightening of the remaining bolts msb2dl3sm REVO614 Model MSB2 Page 3 REASSEMBLY All procedures for reassembling the pump are the reverse of the previous instructions with further instructions as shown 1 The diaphragm assemblies are to be installed with the natural bulge outward or toward the head of the center screw Make s
21. ure both plates are installed with outer radii against the diaphragm After all components are in position in a vise and hand tight set a torque wrench for 480 inch pounds 40 ft pounds 54 23 Newton meters using a 1 1 16 27mm wrench or six pointed socket After each diaphragm sub as sembly has been completed thread one assembly into the shaft held near the middle in a vise having soft jaws to protect the finish making sure the stainless steel washer is in place on the capscrew Make sure 1 4 20 mounting screw has been removed and that the bumper Item 19 on drawing is in place in the shaft Install this sub assembly into the pump and secure by placing the outer chamber housing and capscrews on the end with the diaphragm This will hold the assembly in place while the opposite side is installed Make sure the last diaphragm assembly is torqued to 30 ft Ibs 40 67 Newton meters before placing the outer diaphragm over the capscrews If the holes in the diaphragm flange do not line up with the holes in the chamber flange turn the diaphragm assembly in the direction of tightening to align the holes so that the capscrews can be inserted This final torquing of the last diaphragm assembly will lock the two diaphragm assemblies together Place remaining outer chamber on the open end and tighten down the securing fasteners gradually and evenly on both sides PILOT VALVE The pilot valve assembly is accessed by removing the main air distributi
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