Service Manual
Contents
1. 170 024 330 170 032 330 170 045 330 170 050 330 170 052 330 170 066 330 170 057 330 170 060 330 275 009 331 326 003 080 360 010 425 360 041 425 360 048 425 426 009 000 426 015 000 530 036 000 545 007 330 545 007 330 547 009 080 560 020 360 560 022 360 560 076 360 605 012 151 618 007 330 620 004 114 685 043 120 720 004 360 720 022 360 720 034 000 677 001 542 807 047 080 866 025 162 eh2 sh2dl4sm rev0513 SANDPIPER A WARREN RUPP INC BRAND SERVICE AND OPERATING MANUAL DESCRIPTION Adapter Regulator w Gauge Sleeve amp Spool Set Assy Pilot Valve Valve Body Sleeve without o ring O Ring Sleeve Spool without o ring O Ring Spool Retaining Ring Valve Body Bracket Intermediate Bearing Sleeve Bracket Mounting Bracket Ass y EH2 only Bumper Diaphragm Bumper Spool Actuator Bushing Ass y with o ring O Ring installs inside item 12 Cap Valve Body Cap Cylinder Capscrew Hex Head 2 only Cl Capscrew Hex Head EH2 only SS Capscrew Hex Head Capscrew Hex Head Capscrew Hex Head Capscrew Hex Head EH2 Cl Capscrew Hex Head EH2 SS Capscrew Hex Head EH2 only Capscrew Hex Head Cylinder Foot Mounting EH2 only Gasket End Cap Gasket Valve Body Gasket Valve Body Hose Assembly Hose Assembly Muffler Nut Hex EH2 only Cl Nut Hex EH2 only SS Nut Lock O Ring O Ring O Ring Piston Plug Pipe Plunger Actuator2. Rod Connecting Seal U Cup T Seal with 2 backups PSP Seal with energizer Wear Ring Stud Connector Male Model EH2 M amp SH2 M HIGH PRESSURE DUTY Type 4 TOTAL RQD Repair Parts shown in bold face darker type are more likely to need replacement after extended periods of normal use They are readily available from most Warren Rupp distributors The pump owner may prefer to maintain a limited inventory of these parts in his own stock to reduce repair downtime to a minimum IMPORTANT When ordering repair parts always furnish pump model number serial number and type number MATERIAL CODES The Last 3 Digits of Part Number _ 000 Assembly sub assembly and some purchased Items 010 Cast Iron 012 Powered Metal 015 Ductile Iron 020 Ferritic Malleable Iron 025 Music Wire 080 CarbonSteel AISI B 1112 100 Alloy 20 110 Alloy Type 316 Stainless Steel 111 Alloy Type 316 Stainless Steel Electro Polished 112 Alloy C 113 Alloy Type 316 Stainless Steel Hand Polished 114 303 Stainless Steel 115 302 304 Stainless Steel 117 440 C Stainless Steel Martensitic 120 416 Stainless Steel VVrought Martensitic 123 410 Stainless Steel VVrought Martensitic 148 Hardcoat Anodized Aluminum 149 2024 T4 Aluminum 150 6061 T6 Aluminum 151 6063 T6 Aluminum 152 2024 T4 Aluminum 2023 7351 154 Almag 35 Aluminum 155 or 156 356 T6 Aluminum 157 Die Cast Aluminum Alloy 380
3. 158 Aluminum Alloy SR 319 159 Anodized Aluminum 162 Brass Yellow Screw Machine Stock 165 Cast Bronze 85 5 5 5 166 Bronze SAE 660 170 Bronze Bearing Type Oil Impregnated 180 Copper Alloy 310 Kynar Coated 330 Zinc Plated Steel 331 Chrome Plated Steel 332 Electroless Nickel Plated 335 Galvanized Steel 336 Zinc Plated Yellow Brass 337 Silver Plated Steel 340 Nickel Plated 342 Filled Nylon 354 niection Molded 203 40 Santoprene Duro 40D 5 Color RED 355 Thermoplastic Elastomer 356 Hytrel 357 Urethane Rubber Color 358 Urethane Rubber Color coded PURPLE Some Applications Compression Mold 359 Urethane Rubber 360 Nitrile Rubber Color coded RED 361 Nitrile 363 FKM Color coded YELLOVV 364 E P D M Rubber Color coded BLUE 365 Neoprene Rubber Color coded GREEN 370 Butyl Rubber Color coded BROVVN 371 Philthane Tuftane List continued next page Model EH2 M amp SH2 M Page 5 ITEM NO 45 46 47 49 50 51 52 53 54 55 56 57 58 59 60 61 62 69 70 PART NUMBER 866 040 162 866 041 162 900 001 330 900 004 330 900 006 330 132 022 360 901 005 330 050 005 354 050 005 360 050 005 363 050 005 364 050 005 365 050 010 600 050 017 354 050 017 360VV 050 017 364VV 050 017 365VV 050 017 366VV 050 018 600 115 064 080 115 072 080 196 029 015 196 053 010 196 047 110 286 036 354 286 036 360 286 036 363 286 036
4. During reassembly make sure the ends of the back up spacer and wear ring end are not across from each other WET SIDE The wet side piston has a yellow PSP seal Inspect for flat spots and gouges Behind the seal is an energizer ring that helps to load the seal against the cylinder wall The energizer ring is included with the new seal The wear rings are the same as on the air side Again make sure the ends are not across from each other Reassembly of both pistons is the opposite of removal Make sure the side of the locknut with the seal is next to the piston The groove in the piston or o ring item 35 must be toward the pump center o ring seals next to the rod Apply a heavy oil to the piston seals when sliding on the cylinder The piston nut should be torqued at 500 in lbs 56 49 Newton meters The studs that secure the cylinders to the intermediate should be torqued at 250 in Ibs 28 24 Newton meters IMPORTANT NOTE Reas sembly of the wet side piston seal assembly differs from the air side in that it must be carefully pressed into the cylinder An arbor press is commonly used for this purpose 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 wit
5. O Ring SS Only Seal SS Only Plug Pipe Foot SS Only For models with PTFE overlay pumping diaphragm Plate Diaphragm Outer Plate Diaphragm Outer Diaphragm Diaphragm Plate Diaphragm Inner Washer Lock Nut Hex Nut Hex SS Only Washer Lock SS Only Available in kit form Order P N 031 055 000 which also includes Items 63 612 097 110 612 039 010 64 286 020 604 65 286 005 365 66 612 047 330 67 900 007 330 68 545 009 330 Not Shown 545 008 330 900 003 330 26 27 38 amp 50 BRP RP PP PANN ARPA A NNNNDYM NNNNDN NNONNS ee ee Cre Ce CC Ce ALR Repair Parts shown in bold face darker type are more likely to need replacement after extended periods of normal use They are readily available from most Warren Rupp distributors The pump owner may prefer to maintain a limited inventory of these parts in his own stock to reduce repair downtime to a minimum IMPORTANT When ordering repair parts always furnish pump model number serial number and type number MATERIAL CODES The l 3 Digits of Part Continued from previous page 375 Fluorinated Nitrile 378 High density Polypropylene 405 Cellulose Fibre 408 Cork and Neoprene 425 Compressed Fibre 426 Blue Gard 440 Vegetable Fibre 465 Fibre 500 Delrin 500 501 Delrin 570 505 Acrylic Resin Plastic 520 Molded PVDF Natural Color 540 Nylon 5
6. 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 of oil dirt or other contaminants from the pump s air sup ply 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 pres sure conditions Replace any of these
7. 0 Hex Nut 570 001 363 Hinge Pad Flap Valve 1 900 004 330 Lock VVasher 570 001 364 Hinge Pad Flap Valve 900 006 330 Lock VVasher 570 001 365 Hinge Pad Flap Valve 901 005 330 Flat VVasher 338 005 360 Flap Valve 050 000 000 Check Ball 338 005 363 Flap Valve 115 000 000 Mounting Bracket 338 005 364 Flap Valve 196 000 000 Outer Chamber 338 005 365 Flap Valve 312 046 000 90 Street Elbow 338 010 357 Flap Valve 334 000 000 Suction Flange 334 014 156 Suction Flange 334 000 000 Discharge Flange 334 014 010 Suction Flange 618 003 000 Pipe Plug 807 018 110 Stud 722 000 000 Check Valve Seat 900 005 330 Lock Washer 545 005 330 Hex Nut 334 015 136 Discharge Flange FLAP CHECK VALVE SERVICING 334 015 010 Discharge Flange 722 070 360 Flap Valve Seat 722 070 363 Flap Valve Seat 722 070 364 Flap Valve Seat Valve inspection requires removal of 4 3 s hex nuts On the suction side the flange when removed carries 115 062 080 Left Hand Mounting Foot the valve and seat as an assembly On the discharge 115 063 080 Right Hand Mounting Foot side the valve and seat will stay with the diaphragm 115 075 080 Mounting Bracket Assembly housing Visual inspection and cleaning is possible If 618 003 330 Pipe Plug parts are to be replaced remove the self locking nuts and all parts are accessible eh2 sh2dl4sm rev0513 Model EH2 M 8 SH2 M Page 9 a STS WARREN RUPP INC Declaration of Conformity Manufacturer Warren Rupp Inc 800 N Main Street P
8. 364 286 036 365 286 036 366 312 046 020 312 046 110 334 038 010 334 044 110 334 039 010 334 043 110 618 003 330 618 003 110 722 040 110 722 042 080 560 079 360 560 079 611 560 106 360 560 106 363 560 106 364 560 106 365 720 060 600 618 003 110 326 006 080 DESCRIPTION Fitting Fitting VVasher Lock VVasher Lock EH2 only Washer Lock EH2 Cl Models EH2 SS Models Bumper goes to head of item 38 VVasher Flat EH2 only Ball Check Valve EH2 CI Only Ball Check Valve EH2 CI Only Ball Check Valve EH2 CI Only Ball Check Valve EH2 CI Only Ball Check Valve EH2 CI Only Ball Check Valve EH2 CI Only Ball Check Valve EH2 SS Only Ball Check Valve EH2 SS Only Ball Check Valve EH2 SS Only Ball Check Valve EH2 SS Only Ball Check Valve EH2 SS Only Ball Check Valve EH2 SS Only Bracket Mounting EH2 Cl Only Bracket Mounting EH2 SS Only Chamber Inner Chamber Outer EH2 only Chamber Outer EH2 only Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm Diaphragm 90 Street Elbow EH2 CI Only 90 Street Elbow EH2 SS Only Flange Suction EH2 only Flange Suction EH2 only Flange Discharge EH2 only Flange Discharge EH2 only Plug Pipe EH2 Cl Only Plug Pipe EH2 SS Only Seat Check Valve EH2 SS Only Seat Check Valve EH2 CI Only O Ring CI Only O Ring CI Only O Ring SS Only O Ring SS Only O Ring SS Only
9. 41 Nylon 542 Nylon 544 Nylon Injection Molded 550 Polyethylene 551 Polypropylene 552 Unfilled Polypropylene 553 Unfilled Polypropylene 555 Polyvinyl Chloride 570 Rulon Il 580 Ryton 590 Valox 591 Nylatron G S 592 Nylatron NSB 600 Virgin PTFE 601 Virgin PTFE Bronze and moly filled 602 Filled PTFE 603 Blue Gylon 604 Virgin PTFE 606 Virgin PTFE 610 PTFE Encapsulated Silicon 611 PTFE Encapsulated Viton Delrin Virgin PTFE Viton and Hytrel are registered tradenames of E l DuPont Gylon is a registered tradename of Garlock Inc Nylatron is a registered tradename of Polymer Corp Rulon Il is a registered tradename of Dixion Industries Corporation Hastelloy C is a registered tradename of Cabot Corp Ryton is a registered tradename of Phillips Chemical Company Valox is a registered tradename of General Electric Company SANDPIPER PortaPump Tranquilizer SludgeMaster and Warren Rupp are registered tradenames of Warren Rupp Inc Model EH2 M amp SH2 M Page 6 eh2 sh2dl4sm rev0513 AVAILABLE REPAIR PART KITS ITEM NO PART NUMBER DESCRIPTION 476 100 000 Repair Parts Kit for EH2 476 048 360 476 048 363 476 048 364 476 048 365 476 048 633 476 048 635 476 056 635 476 056 360 476 056 364 476 056 365 476 056 633 Repair Parts Kit for SH2 476 055 360 476 055 363 476 055 364 476 055 365 eh2 sh2dl4sm rev0513 AIR
10. END KIT for both EH2 and SH2 Gaskets O Rings Seals Air Valve Sleeve and Spool Pilot Valve Assembly WETTED END K T CI Only FKM Diaphragm Check Balls and O Rings Carbon Steel Seats WETTED END KIT CI Only FKM Diaphragm and Check Balls PTFE O Rings Carbon Steel Seats WETTED END KIT CI Only EPDM Diaphragm and Check Balls PTFE O Rings Carbon Steel Seats WETTED END K T CI Only Neoprene Diaphragm and Check Balls Buna O Rings Carbon Steel Seats WETTED END KIT CI Only FKM Diaphragm PTFE Check Balls and O Rings Carbon Steel Seats WETTED END K T CI Only Neoprene Backup Diaphragm PTFE Overlay Diaphragm and O Rings Carbon Steel Seats WETTED END KIT EH2 SS Only Neoprene Backup Diaphragm PTFE Overlay Diaphragm Check Balls and O Rings Stainless Steel Seats WETTED END KIT SS Only Buna Diaphragm Check Balls and O Rings Stainless Steel Seats WETTED END KIT SS Only EPDM Diaphragm and Check Balls PTFE O Rings Stainless Steel Seats WETTED END KIT SS Only Neoprene Diaphragm and Check Balls Buna O Rings Stainless Steel Seats WETTED END KIT SS Only Viton Diaphragm PTFE Check Balls and O Rings Stainless Steel Seats WETTED END KIT Buna Diaphragm Flap Valves Hinge Pads and Seats WETTED END KIT FKM Diaphragm Flap Valves Hinge Pads and Seats WETTED END KIT EPDM Diaphragm Flap Valves Hinge Pads and Seats WETTED END KIT Neoprene Diaphragm Flap Valves and Hinge Pads Buna Seats Model EH2
11. M amp SH2 M Page 7 9060A34 ulSy d zus zu IN ZH2 IPPON WSN ul paud ou ddny uae s weuape 61 ose Jazijinbues pue yadidqpues ddny S U L ou ddny 600ZO AINO 3015 HIY 61 ATNO 3018 LIM NIOIAMZS 1 U YM PIN JOALIP 2w SIU JO 5 ay ul p lo ds 6275 YOO v 0 eld u pue ued s upesydeip 99 we ejd no ue a1 Ou U UM 4 ul5HA 40 ASN SH2 M TYPE 7 SANDPIPER PUMP ADDER SHEET The SH2 M Type 7 SANDPIPER Pump is a flap valve version of the EH2 M pump The SH2 M pump is identical to the EH2 M except for the vvetted parts VALVE SEAT SIDE New items on SH2 M pump are as shown on this exploded view Part numbers are shown below SMALL DIAMETER RIVET TAIL LARGE DIAMETER RIVET HEAD NOTE RIVET HEADS SHOULD FACE VALVE SEAT NEW SH2 M PARTS EH2 M PARTS REPLACED ITEM PART NO DESCRIPTION PART NO DESCRIPTION A 196 002 155 Outer Chamber 115 067 080 Mounting Bracket Assembly 196 002 010 Outer Chamber 170 024 330 Hex Head Capscrew 170 060 330 Hex Head Cap Screw 170 052 330 Hex Head Capscrew 807 008 330 Stud 170 057 330 Hex Head Capscrew 547 002 110 Stop Nut 170 060 330 Hex Head Capscrew 670 005 110 Flap Valve Retainer 326 003 080 Mounting Foot 570 001 360 Hinge Pad Flap Valve 545 007 33
12. O Box 1568 Mansfield Ohio 44901 1568 USA certifies that Air Operated Double Diaphragm Pump Series HDB HDF M Non Metallic S Non Metallic M Metallic S Metallic T Series G Series RS Series U Series EH and SH High Pressure W Series SMA and SPA Submersibles and Tranquilizer Surge Suppressors comply with the European Community Directive 2006 42 EC on Machinery according to Annex VIII This product has used Harmonized Standard EN809 1998 A1 2009 Pumps and Pump Units for Liquids Common Safety Requirements to verify conformance 2 55 October 20 2005 Signature of authorized person Date of issue David Roseberry Engineering Manager Printed name of authorized person Title April 19 2012 Revision Level F isi evision Leve Date of revision CORPORATION WARREN RUPP INC EC Declaration of Conformity In accordance with ANNEX VIII ATEX Directive 94 9 EC Equipment intended for use in potentially explosive environments Manufacturer Applicable Standard Warren Rupp Inc EN13463 1 2001 A Unit of IDEX Corportion EN13463 5 2003 800 North Main Street P O Box 1568 Mansfield OH 44901 1568 USA Air Operated Double Diaphragm Pumps Il 2 GD c T5 II 3 2 GD c T5 non conductive fluids SANDPIPER A WARREN RUPP INC BRAND DATE APPROVAL TITLE PZA 3 January 2013 David Roseberry Engineering Manager CORPORATION
13. SERVICE AND OPERATING MANUAL WARREN RUPP INC Il 2G c T5 SANDPIPER 6 130 2rs A WARREN RUPP INC BRAND IREX FLUID amp METERING PRINCIPLE OF OPERATION This pump is a 2 1 pressure ratio single acting pump powered by compressed air The 2 1 ratio is achieved by simultaneously applying air pressure over a single end of each of two pistons connected in series by a shaft The two pressurized ends are those most distant from the pumped fluid with the force from the air pressure exerted in the direction of the pumped fluid The combined force is transferred through to the single end of the piston nearer to the pumped fluid the single piston end having an area equal to one half that of the two air ends and then through a fluid cell to a single pumping diaphragm On this single acting pump the suction stroke is independent of all discharge conditions and requires less air pressure than the discharge stroke The suction stroke is accomplished through an air regulator which pressurizes the piston area in the rear cylinder adjacent to the intermediate bracket while simultaneously exhausting the other two piston areas one in the front cylinder adjacent to the intermediate bracket and the other behind the rear cylinder piston adjacent to the cap end OPERATION The regulator is factory preset to 30 psi After the pump is installed and in operation the operator should raise or lower the setting until maximum performance is d
14. e pump piping valves containers or other miscellaneous equipment must be grounded Warren Rupp nc A Unit of IDEX Corporation 800 N Main St Mansfield Ohio 44902 USA Telephone 419 524 8388 Fax 419 522 7867 www warrenrupp com eh2 sh2dl4sm rev0513 Model EH2 M amp SH2 M Page 1 CHECK VALVE SERVICING Need for inspection or service is usually indicated by poor priming unstable cycling reduced performance or the pump s cycling but not pumping DIAPHRAGM SERVICING FILLING DRIVER FLUID Motive power is delivered to the single diaphragm of the pump through a fluid cell located between the diaphragm and the drive piston During preventative maintenance servicing where the diaphragm has not ruptured and the fluid cell is still filled the fluid should be drained from the chamber by removing the pipe plug in the lower most portion of inner chamber item 54 To fill the fluid cell the piston s must be on full discharge stroke To do this and hold during fill procedure remove item 46 fitting from the cylinder cap item 15 and insert air pressure This need not be more than 10 PSI This will move the piston s and hold them in the discharge position Remove the pipe plug at the top of the fluid chamber and fill the chamber with ethylene glycol anti freeze The chamber will take 3000 ml 101 5 fluid ounces of fluid If the diaphragm is Teflon use 2800 ml 95 fluid ounces Tilt the pump to evacuate air pockets
15. etermined by trial and error A setting which is too high will result in excessively rapid and noisy operation with a loss in performance and eventually shortened pump life The hose assemblies deliver air to the non wetted portions of the pump and care should be taken that they are neither crimped nor cut INSTALLATION PROCEDURES Position the pump as close as possible to the source of the liquid to be pumped Avoid long or undersize suction lines and use the minimum number of fittings For permanent installation involving rigid piping install short flexible sections of hose between the pump and piping This reduces strains and permits easier removal of the pump for service when required AIR SUPPLY Do not connect the unit to an air supply in excess of 125 PSI 8 61 bars Install a shutoff valve in the air supply line to permit removal of the unit for servic ing When connecting an air supply of rigid piping mount a section of flexible line to the pump to eliminate piping strain In permanent installations an air line filter is recommended FREEZING OR ICING OF EXHAUST Icing of the air exhaust can occur under certain conditions of temperature and humidity on compressed air power equipment Icing is more likely to occur at high discharge pressures Use of the Warren Rupp Air Dryer should eliminate the problem MAINTENANCE AFTER USE When the pump is used for materials that tend to settle out or transform from liquid to solid form ca
16. from the fluid chamber A box wrench can be used to flex the diaphragm and purge air from the fluid chamber Fill the chamber to the top of the fill hole and re insert the pipe plug using thread compound If the glycol cell fluid is not compatible with the pumped product or would form a potentially dangerous mixture if the diaphragm ruptured consult the factory before choosing an alternative fluid CYLINDER PISTON SERVICING The driver fluid must be drained see above to service the cylinder piston The piston seals are different on the air side versus the driver fluid side Typically the fluid side will require replacement before the air side Remove the nuts and wash ers that secure the air side piston cap and inner fluid chamber to the intermediate bracket The cylinders may now be removed Inspect the cylinder wall carefully Scratches can cause driver fluid to leak to the air side of the pump which can find its way to the exhaust muffler Scratches on the air cylinder will cause too much air to leak when on pressure stroke The locknuts holding the cylinder to the rod can now be removed Carefully inspect the piston for scratches burrs and wear especially if the piston seals are worn The piston seals can now be inspected or replaced AIR SIDE The air side piston has a T Seal If the seal is worn showing flat areas or gouges it will require replace ment Remove seal and back up spacer Remove wear rings and carefully inspect for wear
17. h properly lubricated compressed air supplies Proper lubricatrion 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 Ai WARNING Do not smoke near the pump or use the pump near an open flame Fire or explosion couldresult A WARNING This pump must not be used for fluid transfer into aircraft Ai WARNING This pump is pressurized internally v ith 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 AWARNING When used for toxic or aggressive fluids the pump should always be flushed clean prior to disassembly A 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 re
18. indicated by a high vacuum reading when a vacuum gauge is installed in the suction line C Check valves may not be seating properly To check remove the suction line and cover the suction port with your hand If the unit does not pull a good suction vacuum the check valves should be inspected for proper seating D Static suction life may be too high Priming can be improved by elevating the suction and discharge lines higher than the check valves and pouring liquid into the unit through the suction inlet When priming at high suction lifts or with long suction lines operate the pump at maximum cycle rate 3 Low performance A Capacity is reduced as the discharge pressure increases Performance capability varies with available inlet supply Check air pressure at the pump inlet when the pump is operating to make certain that adequate air supply is maintained B Check vacuum at the pump suction Capacity is reduced as vacuum increas es Reduced flow rate due to starved suction will be evident when cycle rate can be varied without change in capacity This condition will be more prevalent when pumping viscous liquids When pumping thick heavy material the suction line must be kept as large in diameter and as short as possible to keep suction loss minimal C Low flow rate and slow cycling rate indicate restricted flow through the discharge line Low flow rate and fast cycling rate indicate restriction in the suction line or air leakage into suc
19. 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 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 Press the set into the valve body easily without shearing the o rings Re install one end cap gasket and bumper on the valve body Using the arbor press or bench vise that was used in disassembly press the sleeve back into the valve body 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 the 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 PILOT VALVE ACTUATOR SERVICING The bushings for the pilot valve actuators are threaded into the intermedi ate bracket from the outside The plunger may be removed for inspection or replacemen
20. re must be taken after each use or during idle time to remove them and flush the pump as required to prevent damage In freezing temperatures the pump must be completely drained when idle This model must be tilted to allow the liquid from the chambers to run out of the discharge port Model EH2 M amp SH2 M HIGH PRESSURE DUTY Type 4 A 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 A 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 AWARNING Before maintenance or repair shut off the com pressed air line bleed the pressure 7 and disconnect the air line from the pump The discharge line may be pressurized and must be bled of its pressure AWARNING In the event of diaphragm rupture pumped material may enter the air end of the pump and be discharged into the atmosphere The air exhaust must be piped to an appropriate area for safe disposition AWARNING Take action to prevent static sparking Fire or explosion can result especially when handling flammable liquids Th
21. sult in serious injury or death A WARNING Airborne particles and loud noise hazards Wear ear and eye protection CE Pump complies with EN809 Pumping Directive Directive 2006 42 EC Machinery according to Annex VIII Model EH2 M amp SH2 M Page 2 eh2 sh2dl4sm rev0513 move back and forth freely This is most important when the air supply is lubricated If a lubricator is used oil accumulation vvill over time collect any debris from the com pressed air This can prevent the pump from operating properly 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 available from Warren Rupp 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 sup plied 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 Main Air Valve The main air valve sleeve and spool set is located in the valve body
22. t from the inside by removing the air distribution valve body and the pilot valve body from the pump The plungers should be visible as you look into the intermediate from the top Depending on their position you may find it necessary to use a fine piece of wire to pull them out Under rare circumstances it may become necessary to replace the o ring seal The bushing can be pushed through the inner chamber by removing the outer chamber the assembly to reach the bushing eh2 sh2dl4sm rev0513 Model EH2 M amp SH2 M Page 3 TROUBLE SHOOTING 1 Pump will not cycle A Check to make sure the unit has enough pressure to operate and that the air inlet valve is open B Check the discharge line to insure that the discharge line is neither closed nor blocked C If the spool in the air distribution valve is not shifting check the main spool It must slide freely D Excessive air leakage in the pump can prevent cycling Air leakage from the exhaust port indicates leakage in the air distribution valve See further service instruc tions E Blockage in the liquid chamber can impede movement of diaphragm 2 Pump cycles but will not pump A Suction side of pump pulling in air Check the suction line for air leaks and be sure that the end of the suction line is submerged Check flange bolting Check valve flanges and manifolds to chamber flange joints B Make certain the suction line or strainer is not plugged Restriction at the suc tion is
23. tion For more information refer to the Warren Rupp Troubleshooting Guide WARRANTY This unit is guaranteed for a period of five years against defective material and workmanship For high pressure pumps used in conjunction with another diaphragm pump in skid mount system The EH2 M will not prime against the head created by the fill pump Run both simultaneously at start up RECOMMENDED WARREN RUPP ACCESSORIES TO MAXIMIZE PUMP PERFORMANCE e Tranquilizer Surge Suppressor For nearly pulse free flow Warren Rupp Air Dryer For clean dry compressed air e Warren Rupp Filter Regulator For modular installation and service convenience Warren Rupp Speed Control For manual or programmable process control Manual adjustment or 4 20mA reception For more detailed information on these accessories contact your local Warren Rupp Factory Authorized Distributor or Warren Rupp corporate headquarters Model EH2 M amp SH2 M Page 4 eh2 sh2dl4sm rev0513 WARREN RUPP INC ITEM 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 A 41 B 42 43 44 FLUID amp METERING PART NUMBER 008 013 080 020 008 000 031 012 000 095 073 000 095 070 551 755 025 000 560 033 360 775 026 000 560 023 360 675 037 080 095 040 156 114 002 156 070 006 170 115 045 000 115 067 080 132 002 360 132 014 358 135 008 000 560 001 360 165 011 157 165 047 010 170 024 330
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