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Please read and save these instructions . Read carefully before attempting to assemble , install , operate or maintain the product described . Protect yourself and others by observing all safety information . Failure to comply with instructions could result in personal injury and / or prop . erty damage ! Retain instructions for future reference . Air Compressors tion , that if not followed , may cause Description damage to equipment . Air compressor units are intended to provide compressedair to power pneu - Breathable Air Warning Unpacking matic tools , operate sprayguns and sup - ply air for pneumatic valves and actua - After unpacking the unit , inspect care - This compressor / pump is NOT tors . The pumps supplied with these fully for any damage that may have equipped and should NOT be used units have oil lubricated bearings . A occurred during transit . Make sureto " as is " to supply breathing quality small amount of oil carryover ispresent tighten fittings , bolts , etc . , before air . For any application of air for in the compressed air stream . putting unit into service . human consumption , you must fit Applications requiring air free of oil I WARNINGI Donotoperete the air compressor / pump with suit - vapor should have the appropriate filter unit if damaged able in - line safety and alarm equip - during shipping , handling or use . installed . The air compressorunits are to Damage may result in bursting and ment . This additional equipment is be mounted per the instructionsprovid - cause injury or property damage . necessary to properly filter and puri - ed on a solid floor . Any other use of fy the air to meet minimal specifica - these units will void the warranty and tions for Grade D breathing as the manufacturer will not be responsi - General Safety described in Compressed Gas ble for problems or damages resulting Since the air compressor and other from such misuse . Refer to the enclosed Association Commodity components ( material pump , spray " Replacement PartsManual " to identify Specification G 7.1 - 1966 , OSHA 29 guns , filters , lubricators , hoses , etc . ) CFR1910 . 134 , and / or Canadian compressor as single stage or two - stage . used make up a high pressure pump - Standards Associations ( CSA ) . ing system , the following safety pre - cautions must be observed at all times : DISCLAIMER OF WARRANTIES Safety Guidelines In the event the compressor is used This manual containsinformation that is included with this for the purpose of breathing air very important to know and understand . product carefully . application and proper in - line safety This information isprovided for SAFETY la amn1u and alarm equipment is not simulta - Bethoroughly and to PREVENTEQUIPMENTPROB - familiar with the controls and the neously used , existing warranties LEMS . To help recognize this informa - are void , and the company disclaims proper use of the equipment . tion , observe the following symbols . any liability whatsoever for any 2 . Follow all local electrical and safety Danger indicates loss , personal injury or damage . codes as well as the United States an imminently haz . ardous situation which , ff not avoided , National Electrical Codes ( NEC ) and 6 . DO not stand on or use the unit as will result in death or serious injury . Occupational Safety and Health Act a handhold . ( OSHA ) . I _ WARNINGI Warningindicates a potentially haz - 7 . Before each use , inspect compressed 3 . Onlypersonswellacquaintedwith ardous situation which , if not avoided , air system and electrical components could result in death or serious injury . theserulesofsafeoperationshould for signs of damage , deterioration , Caution indicates a be allowedtousethe compressor . weakness or leakage . Repair or [ _ CAUTIONI potentiallyhaz - 4 . Keep visitorasway and NEVER ardous situation which , if not avoided , replace defective itemsbefore using . allowchildreninthework area . MAY result in minor or moderate 8 . Check all fasteners at frequent injury . 5 . Wear safetyglassesand use intervals for proper tightness . Notice indicates hearingprotectionwhen operating I NOTICE l importantinforma - theunit . or warranty safekeeping . I REMINDER : Keep your dated proof of purchase for purposes ! Attach it to this manual file it for I Â© 2003 Call 1 - B00 - 543 - 6400 for parts IN254702AV 1 / 03 Call 1 - 800 - 54Z _ - 0350 for technical assistance
Air Compressors General Safety ( Cont . ) [ ACAUTION1 _ not lift or move unit without appro . Never attempt to repair or priately rated equipment . Be sure the IAWARNINGI modify a tank ! Welding , unit is securely attached to lifting drilling or any other modi . device used . Do not lift unit by holding Motors , electrical equip - fication will weaken the onto tubes or coolers . Do not use unit ment and controls can tank resulting in damage from rupture cause electrical arcs that to lift other attached equipment . or explosion . Always replace worn , will ignite a flammable gas or vapor . Never use the cracked or damaged tanks . Never operate or repair in or near a IACAUTIONI . oodshlpplng flammable gas or yaps ; , . AJ _ verstore skids for mounting the compressor . [ NOTICE ] Drainliquidfrom flammable liquids or gases in the vicini - tank daily . install and operate unit at least 24 " ty of the compressor . 14 , Tanks rust from moisture build - up , from any obstructions in a clean , well which weakens the tank , Make sure ventilated area . The surrounding air I WARNINGI temperature should not exceed 100 Â° F . to drain tank regularly and inspect Never operate compressor This will ensure an unobstructed flow periodically for unsafe conditions without a beltguard . This m _ Q j of air to cool compressor and allow such as rust formation and corrosion . unit can start automatically _ Jh . _ adequate space for maintenance . without warning . Personal 15 . Fast moving air will stir up dust and injury or property damage could occur debris which may be harmful . Release from contact with moving parts . Do not locata the compressor air inlet air slowly when draining moisture or 9 . Do not wear loose clothing or jewel - near steam , paint spray , sandblast areas depressufizing the compressor system . or any other source of contamination . ry that will get caught in the mov - SPRAYING PRECAUTIONS ing parts of the unit . NOTE : If compressor operates in a hot , moist environment , supply compressor IAWARNINGI pump with clean , dry outside air . Supply air should be piped in from Compressor parts may be Do not spray flammable external sources . hot even if the unit is AI - - - 0 - TI 0 N I materials in vidnity of open stopped . flame or near ignition TANK MOUNTING sources including the compressor unil _ 10 . Keep fingers away from a running The tank should be bolted into a flat , 16 . Do not smoke when spraying paint , compressor ; fast moving and hot even , concrete floor or on a separate insecticides , or other flammable concrete foundation , Vibration isolators parts will cause injury and / or burns . substances . should be used between the tank leg 11 . If the equipment should start to and the floor . Model MP345800AJ isola - 17 . Use a face mask / respi - vibrate abnormally , STOP the tor pads are recommended for horizon * rator when spraying engine / motor and check immediate - tal units . Model MP345700AJisolator and spray in a well ven - ly for the cause . Vibration is gener - pads are recommended for vertical units . tilated area to prevent ally an indication of trouble . When using isolatorpads , do not draw health and fire hazards . 12 . To reduce fire hazard , keep bolts tight . Allow the padsto absorb vibrations . When isolatorsare used , a 18 . Do not direct paint or other sprayed engine / motor exterior free of oil , flexible hoseor coupling should be material at the compressor . Locate solvent , or excessive grease . installed between the tank and service compressor as far away from the spray - IAWARNINGI AnASME Sa - piping . ty relief valve with a ing area as possible to minimize over - setting no higher than the Maximum spray accumulation on the compressor . [ AWARNINGI Allowable Working Pressure ( MAWP ) of 19 . When spraying or cleaning with sol - the tank MUST be installed in the air lines Failure to properly install or in the tank for this compressor . The vents or toxic chemicals , follow the the tank can lead to cracks ASME safety valve must have sufficient instructions provided by the chemi - at the welded joints and flow and pressure ratings to protect the cal manufacturer . possible bursting . pressurized components from bursting . PIPING The flow rating can be found in the parts manual . 7he safety valve in the intercool - Installation IAWARNINGI Neveruseplastic er does not provide system protection . ( PVC ) pipe for corn - pressed air . Serious injury or death Maximum operat . I _ WARNING ] could result . IACAUTIONI ingpre ureis , 75 psi for two - stage compressors and 135 Disconnect . tag and lock Any tube , pipe or hose connected to the - 150 psi for single stage compressors . DO out power source then unit must be able to withstand the tem - not Operate with pressure switch or pilot release all pressure from perature generated and retain the pres - valves set higher than 175 psi ( two - stage ) the system before attempting to or 135 - 150 psi ( single stage ) . sure . All pressurized components of the install , service , relocate or perform any maintenance . air system must have a pressure rating 13 . Never attempt to adjust ASME safe - higher than or equal to the 200 psi for ty valve . Keep safety valve free from paint and other accumulations . 2
Cast Iron Series Wiring must be installed in accordance tion and make sureall joints are free Installation ( Cont . ) with National Electrical Code and local from leaksBEFOREunderground lines t _ vo - stage compressors or 150 psi for sin - codes and standards that have been set are covered . Before putting the compres - g ] e stage compressors ASME safety valve sor into service , find and repair all leaks up covering e [ ectrical apparatus and setting . Incorrect selection and installa - wiring . These should be consulted and in the piping , fittings and connections . tion of any tube , pipe or hose could result Eocalordinances observed . Be certainthat MINIMUM PIPE SIZE in bursting and injury . Connect piping sys - adequate wire sizesare used , and that : FOR COMPRESSED AIR LINE tem to tank using the same size fitting as 1 . Serviceisof adequate ampere rating . the discharge port . 2 . The supply line has the same electri - INSTALLING A SHUT - OFF VALVE cal characteristics ( voltage , cyclesand 10 1 / 2 " 1 / 2 " 3 / 4 " 3 / 4 " phase ) asthe motor . A shut - off valve should be installed on 3 . The line wire isthe proper sizeand the discharge port of the tank to control 20 314 3 / 4 3 / 4 1 that no other equipment isoperated the air flow out of the tank . The valve 40 314 1 1 I from the same line . The chart givesesfor should be located between the tank and minimum recommended wire siz the piping system . 60 3 / 4 1 1 1 compressorinstallations . IAWARNINGI Neverinstalla 100 1 1 1 1 ' / 4 shut - off valve between the compressor pump and the tank . Personal injury andlor equipment WIRING MINIMUM WIRE SIZE damage may occur . Never use reducers USE 75 Â° C COPPER WIRE [ AWADPj , mjr . I All wiring andnec - in discharge piping . a _ ' alaal ' _ ' Wl electrical con tions must be performed by a qualified When creating a permanently installed electrician . Installations must be in system to distribute compressed air , find accordance with local and national the total length of the system and select 5PL upto22 . 0 10AWG codes . pipe size from the chart . Bury under - S . 0 8AWG 12AWG t4AWG IACAUTIO - Overheating . short 7.5 8AWG 10AWG 12AWG ground lines below the frost line and 3 circuiting and fire 10.0 HA 8AWG 12AWG avoid pockets where condensation can damage will result from inadequate 15.0 HA 6AWG 10AWG gather and freeze . wiring . 25.0 HA 3AWG 8AWG Apply air pressure to the piping installa - Safety Valve Access Pump Discharge Tube Motor Motor Pump Pressure , Switch Factory Pressure _ " Mounted Discharge Switch Magnetic Tube Starter ( Not on Pressure Valve _ all units ) / Gauge _ Check Valve Discharge Port _ _ eparately ) Gauge Drain cock Discharge Port Drain Cock _ < _ Tank Isolation Pad o _ _ , a , oPlaat do2 ( available separate Figure 1 - Typical Vertical Unit Identification 3
Air Compressors Installation ( Cont . ) Safety Valve Access Pump Recommended wire sizesmay be larger Discharge Motor Tube than the minimum set up by localordi - Factory Mounted - , , , , nances . If so , the larger size wire should Starter J Magnetic ( Not on r all units ) be used to prevent excessive line voltage Check Valve \ drop . The additional wire cost isvery Pressure Switch Tank small compared with the cost of repair - ing or replacing a motor electrically " starved " by the use of supply wires Pressure which are too small . Gauge GROUNDING Tank Shut - off Valve Isolation Pad ( available separately ) â€¢ ( avaUabie separately ) / Discharge Port Drain cock electrical components are ] _ I Figure 2 - Typical Horizontal Unit Identification shock hazards . Make sure I _ J all the components are have this protection built - in . To deter - properly grounded to prevent death or elements or magnetic starter as serious injury . mine if a motor has built - in overload required . The voltage and amperage protection , refer to the frame size on ratings are listed on the motor This product must be grounded . the motor nameplate . nameplate . Grounding reduces the risk of electrical DIRECTION OF ROTATION Motors with frame size RS6HZ , Y56Y or shock by providing an escapewire for the electric current if short circuit L143T include built - in overload protec - NOTE : Improper rotation will result in reduced unit life . occurs . This product must be installed tion . No additional protection is and operated with a power cord or required . Use Figure 3 wiring diagram â€¢ The direction of rotation must be coun - cable that has a grounding wire . terclockwise ( as shown bythe arrow on Motors with frame sizes 184T , 21ST , the flywheel ) while facing the flywheel 254T or 284T DO NOT have built - in over - MOTOR HOOKUP AND STARTER INSTALLATION sideof the pump . The motor nameplate load protection . A magnetic starter is will show wiring information for coun - Branch circuit protection must be provid - required . Use Figure 4 wiring diagram . terclockwise rotation . ed as specified in the United States To change to the alternate voltage National Electrical Code , Chapter 2 , The proper direction is very important . on three phase motors with 2301460 " Wiring Design and Protection . " Article The direction of rotation of 3 phase ratings : 210 , using the applicable article " For motors can be reversed by interchang - I . Rewire motor per data plate on Motors and Motor Controllers , " ( Article ing any two motor - line leads . Forsingle motor or instruction sheet . 430 , Table 430 - 1 52 ) . phase motors , refer to the motor name - IMPORTANT : Overload protection is 2 . Check electric rating of magnetic plate . required for all motors , Certain motors starter and replace thermal overload Line Ground ii L3 ( for 3 phasewiring only } I 1.2 Circult Breaker or ( _ L1 Fused Disconnect I - i1 _ . . . . . Circuit Breaker or ? _ LINE Fused Disconnect I - f - - - _ z _ _ y I I . . . . . . . . . _ L1 : L _ _ L1 L _ l L3 Pres ure Sw tch ' X2 Over . _ ' - Load MOTOR f _ Thermal PRESSURE ' _ - _ . . . . ' _ T2 Units ( 3 ) SWITCH Switch tUnits ( 3 ) Pressure _ rnermal T1 _ - J Single Phase / â€¢ â€¢ T3 GROUND - - 1 - _ J Three Phase . ' Single Phase Single Phase , Motor ' , Q1otc r _ Three Phase Wiring Diagram Wiring Wiring , , , Motor Wiring Diagram Diagram Diagram Figure 3 - For Motor Frame3T . Sizes RS6HZ , Y56Y or L14 Figure 4 - For Motor Frame Sizes 184T0 215T , 254T or 284T . Refer Refer to Motor Nameplate to Motor Nameplate 4
Cast Iron Series Operation Breather Breather Cap IMPORTANT : Check motor rotation before operating the compressor . All lubricated compressor pumps dis - charge some condensed water and oil with the compressed air . Install appro - priate water / oil removal equipment and controls asnecessaryfor the _ il intended application . " Fill Plug Failure to install Oil I NOTICE I a _ onate FillPlug * Drain SightGauge waterloil removal equipment may result Plug ull OilDrainPlug in damage to ma ( hinery or workpiece . GUARDING * The Oil FillPlug will be inone of the two locationsshown . The belt guard provided must be installed before I Dipstick Dipsticker _ Breath and Oil Fill operating the unit . All moving parts must be guarded . All Add Oil Max _ F ! II electrical covers must be installed before turning on the power . LUBRICATION THIS UNIT CON - I _ CAUTIONI TAINSNOOI - - Before operating compressor . Fill to the center of the sight gauge or maximum mark on dipst _ ( see _ gure 5 ) . Some residual oil may still be in the pump Figure 5 - Oil Fill Diagrams leaving a thin coat on the sight glass , however ; there is not enough oil to oper - 2 . Turn off the compressor and close 150 psifor two - stage compressorsor 120 ate the unit . Fill pump with single - viscosi - drain cock . The compressor is now psi for singlestage compressorsby open - ty , ISO100 , non - detergent , compressor ready for use . ing the drain cockor an air valve con - oil . Recommended ST126700AVcom - netted to the tank or hose . Runthe pressor oil or Mobil 1 " 5W30 or 10W30 pump for an hour at a time at least once synthetic oil may also be used . Add oil a week or more often if the condensa - only through the oil fill plug . Pouring oil tion reoccurs . into any other orifice will causeoil to leak IMPORTANT : Change oil after first50 and spray out during operation . Fill to hoursof operation . the center of the sight gauge or max - PRESSURESWITCH , START - STOP imum mark on dipstick ( see Figure Figure 6 - Opening Drain Cock NOTE : Thiscompressor hasa maximum 5 ) . operating pressureof 175 psifor two - If the compressoris run under humid IACAUTiONI Usinganyother stage compressorsor 135 psifor single type of oil may conditions for short periods of time , the shorten pump life and damage valves . stagecompressors . Do not alter pressure humidity will condense in the crankcase settingson control components above this RECOMMENDED BREAK - IN PERIOD and causethe oil to look creamy . Oil limit . The compressor should be run continu - contaminated by condensed water will The compressor unit starts and stops ously for one hour to allow proper not provide adequate lubrication and based on preset pressure switch set - seating of the piston rings . must be changed immediately . Using tings . The pressure switch contains an contaminated oil will damage bearings , 1 . Open drain cock completely and run unloader which isa small valve that the compressor for 60 minutes ( See pistons , cylinders and rings and is not vents air to allow the motor to start covered under warranty . To avoid water Figure 6 ) . easily ( See Figure 7 ) . condensation in the oil , periodically run the compressor with tank pressure near
Air Compressors the air filter and oil level before each three months or after every SO0hoursof Operation ( Cont . ) use . The ASME safety valve should also operation ; whichever comesfirst . Only be checked daily ( See Figure 8 ) . Pull pressure lubricated pumps have an oil ring on safety valve and allow the ring filter . to snap back to normal position , This AIR FILTER valve automatically releases air if the tank pressure exceeds the preset maxi - Never run the compressorpump without an intake air filter nor with a clogged mum . If air leaks after the ring has been released , or the valve isstuck and intake air filter . Use compressedair to blow the filter clean . Do not wash or oil cannot be actuated by the ring , the Unloader the element . If it cannot be blown clean , ASME safety valve must be replaced . Totank pressure the filter mustbe replaced . Operating Do not attempt to tamper with the compressorwith a dirty filter can cause ASME safety valve . Figure 7 - Pressure Switch high oil consumptionand increase oil con - tamination inthe discharge air . CONTINUOUS RUN OPERATION INTERCOOLER ( TWO - STAGE COMPRESSORS ONLY ) To convert to continuous run operation a separate unloading device must be r IAIADAIIAII _ - ] Intercooler fins are Figure 8 L _ WA . . s , , . _ = j sharp , alwayswear installed by the userbetween the pump gloves and use care when you clean or and the tank . The existingcheck valve TANK work near the Intercooler . must be removed . Weekly , check the intercooler to be ORANKCASE BREATHER sure all fittings are secure and tight . Never attempt to repair During severe operating conditions or Blow all dirt , dust and other accumula - or modify a tank ! tions from the intercooler fins . initial start - up , some oil may accumulate Welding , drilling or any COMPONENTS at the crankcase breather opening . This other modification will isnormal and will diminish asthe pump Turn off all power and use light air weaken the tank resulting in damage accumulates run time and the piston pressureto blow dust and foreign from rupture or explosion . Always replace worn , cracked or damaged rings become fully seated . material from cylinder head , motor , fan tanks . blades , air lines , intercooler and tank on Drain liquid from a monthly basis . Maintenance I NOTICE J tank daily . BELTS The tank should be carefully inspected I W . = d NINGI [ _ WARNING ] Lo < koutandtag at a minimum of once a year . Look for the power then Disconnect , tag and lock cracks forming near the welds , if a crack release all pressure from the tank to pre - out power source then vent unexpected movement of the uni _ isdetected , remove pressure from tank release all pressure from the system before immediately and replace . Check belt tension every 3 months . attempting to install , service , relocate Adjust belt tension to allow 3 / 8 to 1 / 2 " COMPRESSOR LUBRICATION or perform any maintenance . deflection with normal thumb pressure . See Operation . Add oil asrequired . The In order to maintain efficient opera - Also , align belts using a straight edge oil and oil filter should be changed every tion of the compressor system , check against the face of the flywheel and MAINTENANCE SCHEDULE O Check Safety Valve O Drain Tank ( See Figure 6 ) Check Oil Level O Clean or Change Air Filter Check Intercooler ( two - stage e compressorsonly ) Clean Unit Components o Check Belt Tightness Change Oil ( See Figure 5 ) Change OiEFilter ( Pressure lubricated pumps only ) 6
Cast Iron Series the motor back and forth to adjust belt Maintenance ( Cont . ) MOTOR AIR COMPRESSOR tension . _ _ _ f f _ LDRIVEEY touching the rim on both sides of the STORAGE I J \ ' _ = A B PUL face . The belts should be parallel to this i i If compressor is to be stored for a short , " . ] _ . _ . _ . . straight edge ( see Figure 9 ) , Dimension period of time , make sure that it is FLYWHEEL I A should be the same as B and C to stored in a normal position and in a I STRAIGHTEDGE ensure proper alignment of the belts . cool protected area . SETSCREW C Slots in the bed - plate allow for sliding Figure 9 - Top View Troubleshooting Chart Motor hums and runs slowly or 1 , Low voltage or no voltage 1 . Check with voltmeter , check overload relay in magnetic starter yor . not at all reset switch on motor â€¢ If overload or reset switch trips repeatedl find and correct the cause . See next item 2 . Shorted or open motor wlndin _ g 2 . Replace motork 3 . Malfunctioning check valve or unloader valve 3 . Replace chec valve or unloader valve 4 . Malfunctioning pressure switch - contacts will not 4 . Repair or replace pressure switch close Reset mechanism cuts out 1 . Pressure switch set too high 1 . Adjust or replacee repeatedly or fuses blow 2 . Malfunctioning check valve 2 . Clean or replac faulty valvers repeatedly 3 . Incorrect fuse sizeor magnetic starter heetefs 3 . Be sure that fuses andheate are rated properly 4 . Malfunctioning motor 4 . Replace motor 5 . Check all electrical connections 5 . Loose Wiring Excessive noise in operation 1 . Tighten 1 . Loose pulley flywheel belt , belt guard etc 2 . Lack OTO m crankcase 2 . Check for damaaant _ oe bearingis , replenish oil 3 . Shim to level tighten or place on islolator pads 3 . Comlpressor floor mounting loose 4 . Malfunctioning check valve 4 . Replace check valve Milky oil in oil reservoir Water condensing in crankcase due to high humidi - Pipe air intake to less humid air source , Run pump ty continuously for one hour Excessiveoil consumption or oil 1 . Be sure there is a problem I . Diagnose oil contamination roblems by testing the discharge air or in air lines measuring oil consumption _ rom the crankcase 2 . Restricted air intake 2 . Clean or replace alt filter 3 . Wrong oil viscosity 3 . Drain oil . Refill with oil of proper visCosity 4 . Worn iston rings 4 . Replace ringsss 5 . Oil lea _ s g . Tighten bo _ t replace gaskets or o - tlngs 6 , Scored o / linder 6 . Replace c _ / nder 1 . Drain tank I . Excessivewater in tank Water in discharge air 2 . Hot , humid weather 2 . Purchase dryer Air blowing out of inlet Broken first stage inlet valve ( t _ vo - stage unit ) Replace valve assembly Broken inlet vaFve ( single stage unit ) 1 . Limit air usaoEe Insufficient pressure 1 . Air demand too shigh 2 . Leaks or restriction in hosesor piping 2 . Check for lea - ksor restriction in hose or piping 3 . Slipping belts 3 . Tighten belts Tank does not hold pressure 1 . Worn check valve t . Replace check valve when corno ressor is off and shutoff va ( ve is dosed Do not disassemble check valve with air in tank 2 , Check allconnections and fittings for tightness 2 . Tightence 3 . Check tank for cracks or pin holes 3 . Repla tank . Never repair a damaged tank Excessive belt wear . Light dust 1 . Puney out of alignment 1 . Realign motor pulley from start is norma . Worn belts 2 . Belts too tight or too loose 2 . Adjust tension separate at layers ) Tank pressure builds slowly 1 . Dirty air filter 1 , Clean or replace filter element 2 . Blown cylinder head gasket 2 . Install new gasket 3 . Worn / broken intake / c _ ischarge valves 3 . Install new valve plate assembly 4 , Air leaks 4 . Tighten joints Tan _ pressure builds up quickly Excessivewater in tank Drain tank . check speed . See Performance table on compressor ASME safety valve pops open 1 . Wrong pressure switch setting 1 , Adjust to lower pressure 175 psi maximum for two - stage unit or 135 â€¢ " psi for single stage unlt I See Operation while compressor Bsrunning 2 . Malfunctioning ASME saffety valve 2 . Replace ASME saTety valve 3 , Pressure switch contacts welded 3 . Replace pressure switch Pressure switch continuously Malfunctioning check valve Replace the check valve if the unloader valve bleeds off constantly blows air out the unloader valve Pressure switch unloader valve Malfunctioning unloader valve on pressure switch Replace the pressure switch if the unit does not hiss for a short period does not release air when the of time when the unit shuts off unit shuts off Interstage safety valve pops off 1 . Head gasket or the gasket in the valve plate 1 . Replace valve plate and gaskets while the unit is running assembly blownting 2 . Valve not sea prroperly 2 . Replace valve plate and gaskets 3 . Maifunctlonlng safety valve 3 . Replace safety valve Interstage safety valve pops off Matfunctioning tank check valve Replace the check valve after the unit shuts off
Cast Iron Series Air Compressors Limited Warranty 1 . DURATION : From the date of purchase by the original purchaser as follows : Standard Duty - One Year ; Serious Duty - Two Years ; Extreme Duty - Three Years ; Maxus Model Series - Five Years . 2 . WHO GIVES THIS WARRANTY ( WARRANTOR ) : Campbell Hausfeld / Scott Fetzer Company , 100 Production Drive , Harrison , Ohio , 45030 , Telephone : ( 800 ) 543 - 6400 3 . WHO RECEIVES THIS WARRANTY ( PURCHASER ) : The original purchaser ( other than for purposes of resale ) of the Campbell Hausfeld compressor . 4 . WHAT PRODUCTS ARE COVERED BY THIS WARRANTY ; Any Campbell Hausfeld air compressor . 5 . WHAT IS COVERED UNDER THIS WARRANTY : Substantial defects due to material and workmanship with the exceptions noted below . 6 . WHAT IS NOT COVERED UNDER THIS WARRANTY : A . implied warranties , including those of merchantability and FITNESS FOR A PARTICULAR PURPOSE ARE LIMITED FROM THE DATE OF ORIGINAL PURCHASE AS STATED IN THE DURATION . if this compressor is used for commercial , industrial or rental purposes , the warranty will apply for ninety ( 90 ) days from the date of purchase . Extreme Duty Contractor Compressors are not limited to a ninety ( 90 ) day warranty when used in contractor applications . Four cylinder single - stage and two - stage compressors are not limited to a ninety ( 90 ) day warranty when used in commercial or industrial applications . Some States do not allow limitations on how long an implied warranty lasts , so the above limitations may not apply to you . B . ANY INCIDENTAL , INDIRECT , OR CONSEQUENTIAL LOSS , DAMAGE , OR EXPENSE THAT MAY RESULT FROM ANY DEFECT , FAILURE , OR MALFUNCTION OF THE CAMPBELL HAUSFELD PRODUCT . Some States do not allow the exclusion or limita - tions of incidental or consequential damages , so the above limitation or exclusion may not apply to you . C . Any failure that results from an accident , purchaser's abuse , neglect or failure to operate products in accordance with instructions provided in the owner's manual ( s ) supplied with compressor . D . Pre - delivery service , i . e . assembly , oil or lubricants , and adjustment . E . Items or service that are normally required to maintain the product , i . e . lubricants , filters and gaskets , etc . F . Gasoline engines and components are expressly excluded from coverage under this limited warranty . The Purchaser must comply with the warranty given by the engine manufacturer which is supplied with the product . G , Additional items not covered under this warranty : 1 . All Compressors a . Any component damaged in shipment or any failure caused by installing or operating unit under conditions not in accordance with installation and operation guidelines or damaged by contact with tools or surroundings . b . Pump or valve failure caused by rain , excessive humidity , corrosive environments or other contaminants . c . Cosmetic defects that do not interfere with compressor functionality . d . Rusted tanks , including but not limited to rust due to improper drainage or corrosive environments . e . Electric motors , check valves and pressure switches after the first year of ownership . f . Drain cocks . g . Damage due to incorrect voltage or improper wiring . h . Other items not listed but considered general wear parts . i . Pressure switches , air governors and safety valves modified from factory settings . 2 . Lubricated Compressors a . Pump wear or valve damage caused by using oil not specified . b . Pump wear or valve damage caused by any oil contamination or by failure to follow proper oil maintenance guidelines . 3 . Belt Drive / Direct Drive / Gas Driven Compressors a . Belts . b . Ring wear or valve damage from inadequate filter maintenance . c . Manually adjusted load / unload and throttle control devices . 7 . RESPONSIBILITIES OF WARRANTOR UNDER I HIS WARRANTY : Repair or replace , at Warrantor's option , compressor or com - ponent which is defective , has malfunctioned and / or failed to conform within duration of the warranty period . 8 . RESPONSIBILITIES OF PURCHASER UNDER THIS WARRANTY : A . Provide dated proof of purchase and maintenance records . B . Portable compressors or components must be delivered or shipped to the nearest Campbell Hausfeld Authorized Service Center . Freight costs , if any , must be borne by the purchaser , C . Use reasonable care in the operation and maintenance of the products as described in the owner's manual ( s ) . 9 . WHEN WARRANTOR WILL PERFORM REPAIR OR REPLACEMENT UNDER THIS WARRANTY : Repair or replacement witl be scheduled and serviced according to the normal work flow at the servicing location , and depending on the availability of replacement parts . This Limited Warranty applies in the U . S . , Canada and Mexico only and gives you specific legal rights . You may also have other rights which vary from State to State or country to country .