Quincy Compressor QMA Series Instruction Manual Download Page 1

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Summary of Contents for QMA Series

Page 1: ...TION Air compressors are complicated and can cause serious injury or death if operated improperly Before installing or operating this compressor read and understand this manual and follow all safety precautions I Part 50063 103 Date of Issue March 1997 ...

Page 2: ...ng System 27 QMA50 50Hf60 Control Piping Schematic 31 QMA50 50H160 Wye delta Starting Control Schematic 32 QMA75Across the Line Starting Control Schematic 33 QMA75Wyedelta Starting Control Schematic 34 QMA 100 125 150 Across the Line Starting Control Schematic 35 QMAIOO 125 150 Wyedelta Starting Control Schematic 36 Air FluidReservoir Air FluidSeparator Element 37 Capacity Control System 37 Electr...

Page 3: ...SECTION 6 SERVICING Safety 45 Lubrication CoolingFluid 45 Fluid Specifications 46 CompressorFluidFilter 46 Understandingthe AnalysisReport 46 Figure 6 l Fluid AnalysisReport 47 Figure 6 2 QUINSYI Parameters 48 CompressorAir FluidSeparator Element 49 Control Line AirFilter 50 CompressorShaftFluid Seal 50 Figure 6 3 Shaft Seal Arrangement 50 SAEStraight Thread O Ringfittings 53 SECTION 7 SERVICE ADJ...

Page 4: ...y product or part thereof which proves to be defective If requested by Seller such product or part thereof must be promptly returned to Seller freight colleet for inspection Seller warrants repaired or replaced parts of its own manufacture against defects in materials and workmanship under normal use and service for ninety 1 90 days or for the remainder of the warranty on the product being repaire...

Page 5: ...the level of hazard seriousness J ANGER DANGER Immediate hazards which will result in severe personal injury or death WARNING WARNING Hazards or unsafe practices that could result in personal injury or death CAUTION CAUTION Hazards or unsafe practices which could result in minor personal injury product or property damage 2 ...

Page 6: ... _ _ 1 2 3 IODEL 50 50HP 60 60HP 60H 60HP 75 75HP 100 100HP I 4 FLUID COOLERS A AIR COOLED W WATER COOLED r 5 CJNIT TYPE 4 5 A ACROSS THE LINE Y WYE DELTA I 6 PRESSURE 1 100PSIG 2 150PSIG 7 6 A 1ST B 2ND C 3RD 3 7 _ _ _ ___ ____ _______ ...

Page 7: ...G Degrees F Degrees F In NPT mm RPM RPM M see BTum BTum Degrees F In lJO Nameplate HP RPM CFM 50 231 100 115 75 110 35 1 5 127 5 5325 3550 35 55 2175 363 3 5 0 125 2 1725 6720 50 225 115 130 75 110 35 1 5 127 5 5325 3550 35 55 2325 410 3 5 Partial Canopy 0 125 2 1725 6720 WATER COOLED COOLING DATA Consult factory for water temperatures over 90 F and for water glycol cooling systems Aftercooler App...

Page 8: ...l Enclosure Sound Enclosure Low Sound Enclosure TYPICAL ENERGY DATA Full Load Drive Motor HP Unloaded Drive Motor HP Fan Motor HP Drive Motor Service Factor Drive Motor Speed DIMENSIONS Length Width Height GPM GAL GAL Cu Ft Degrees F PPM dB A dB A dB A BHP BHP BHP RPM Inches Inches Inches 5 12 9 15 0 12 0 10 0 4 0 175 195 1 3 86 84 79 56 2 60 4 12 6 1 5 1 30 3550 3550 86 42 51 7 m _ ...

Page 9: ...PSIG PSIG Degrees F Degrees F In NPT mm RPM RPM Mlsec BTum BTU MIN Degrees F In fiO Nameplate HP RPM CFM 60 224 125 140 75 110 35 1 5 127 5 5325 3550 35 55 60 220 150 165 75 110 35 1 5 127 5 5325 3550 35 55 2426 2756 428 471 3 6 3 6 Partial Canopy 0 125 0 125 2 2 1725 1725 6720 6720 WATER COOLED COOLING DATA Consult factory for water temperatures over 90 F and for water glycol cooling systems Afte...

Page 10: ... Enclosure Sound Enclosure Low Sound Enclosure TYPICAL ENERGY DATA Full Load Drive Motor HP Unloaded Drive Motor HP Fan Motor HP Drive Motor Service Factor Drive Motor Speed DIMENSIONS Length Width Height GPM GAL GAL Cu Ft Degrees F PPM dB A dB A dB A BHP BHP BHP RPM Inches Inches Inches 7 13 0 16 4 12 0 10 0 4 0 175 195 1 3 86 84 79 62 9 70 3 12 6 14 3 1 5 1 30 3550 3550 86 42 51 7 ...

Page 11: ...IG PSIG Degrees F Degrees F In NPT mm RPM RPM M see BTum BTum Degrees F In 0 Nameplate HP RPM CFM 60 288 100 115 75 110 35 1 5 127 5 5325 3550 35 55 2430 430 3 6 0 125 2 1725 6720 60 287 125 140 75 110 35 1 5 127 5 5325 3550 35 55 2740 484 3 6 Partial Canopy 0 125 2 1725 6720 WATER COOLED COOLING DATA Consult factory for water temperatures over 90 F and for water glycol cooling systems Aftercooler...

Page 12: ...Low Sound Enclosure TYPICAL ENERGY DATA Full Load Drive Motor HP Unloaded Drive Motor HP Fan Motor HP Drive Motor Service Factor Drive Motor Speed DIMENSIONS Length Width Height GPM GAL GAL Cu Ft Degrees F PPM dB A dB A dB A BHP BHP BHP RPM Inches Inches Inches 9 12 3 14 9 12 0 10 0 4 0 175 195 1 3 89 83 80 65 7 73 3 12 6 14 5 1 5 1 30 3550 3550 86 42 5 l________ _ _ _ m m _ __ _________ ...

Page 13: ...ns Degrees F Max Allowable Static Backpressure In EJO Fan Motor Nameplate HP Fan Motor RPM Fan Flow CFM 75 352 100 115 75 110 35 2 0 204 2662 1725 28 4 2807 628 14 0 125 2 1725 6720 75 346 125 140 75 110 35 2 0 204 2662 1725 28 4 3126 699 15 Partial Canopy 0 125 2 1725 6720 WATER COOLED COOLING DATA Consult factory for water temperatures over 9 PF and for water glycol cooling systems Aftercooler A...

Page 14: ...PPM SOUND DATA at 1 meter Partial Enclosure Sound Enclosure Low Sound Enclosure TYPICAL ENERGY DATA Full Load Drive Motor HP Unloaded Drive Motor HP Fan Motor HP Drive Motor Service Factor Drive Motor Speed DIMENSIONS Length Width Height dB A dB A dB A BHP BHP BHP RPM Inches Inches Inches 11 24 27 7 19 0 17 0 10 5 175 195 1 3 87 81 79 78 7 89 3 17 3 17 3 2 0 1 25 1725 1725 110 43 67 ...

Page 15: ...nditions Degrees F Max Allowable Static Backpressure In fiO Fan Motor Nameplate HP Fan Motor RPM Fan Flow CFM 100 475 100 115 75 110 35 2 0 204 3550 2367 37 91 100 464 125 140 75 110 35 2 0 204 3550 2367 37 91 3447 3902 646 732 5 5 0 125 0 125 5 5 1160 1160 14920 14920 WATER COOLED COOLING DATA Consult factory for water temperatures over 90 F and for water glycol cooling systems Aftercooler Approa...

Page 16: ...ard Enclosure Low Sound Enclosure TYPICAL ENERGY DATA Full Load Drive Motor HP Unloaded Drive Motor HP Fan Motor HP Drive Motor Service Factor Drive Motor Speed DIMENSIONS Length Width Height GPM GAL GAL Cu Ft Degrees F PPM dB A dB A BHP BHP BHP RPM Inches Inches Inches 13 26 0 30 2 20 0 17 0 10 5 175 195 1 3 92 82 109 0 122 0 15 0 15 0 3 5 1 25 3550 3550 123 52 85 _ _ ______ __ ___ ...

Page 17: ...M PSIG PSIG PSIG Degrees F Degrees F In NPT mm RPM RPM M see BTum BTWMIN Degrees F In 0 Nameplate HP RPM cm 125 595 100 115 75 110 35 2 0 204 3550 2367 37 91 4650 870 7 0 125 5 1160 14920 125 577 125 140 75 110 35 2 0 204 3550 2367 37 91 5273 930 7 0 125 5 1160 14920 WATER COOLED COOLING DATA Consult factory for water temperatures over 90 F and for water glycol cooling systems Aftercooler Approach...

Page 18: ...ter Standard Enclosure Low Sound Enclosure TYPICAL ENERGY DATA Full Load Drive Motor HP Unloaded Drive Motor HP Fan Motor HP Drive Motor Service Factor Drive Motor Speed DIMENSIONS Length Width Height GPM GAL GAL Cu Ft Degrees F PPM dB A dB A BHP BHP BHP RPM Inches Inches Inches 15 34 40 20 0 17 0 10 5 175 195 1 3 92 82 137 0 154 0 27 2 27 2 3 5 1 25 3550 3550 120 52 85 s ...

Page 19: ... PSIG PSIG Degrees F Degrees F In NPT mm RPM RPM Mlsec BTum BTum Degrees F In 0 Nameplate HP RPM CFM 150 730 100 115 75 110 35 2 0 204 3550 2367 37 91 150 710 125 140 75 110 35 2 0 204 3550 2367 37 91 5327 6417 998 1132 8 8 0 125 0 125 5 5 1160 1160 14920 14920 WATER COOLED COOLING DATA Consult factory for water temperatures over 90 F and for water glycol cooling systems Aftercooler Approach at 70...

Page 20: ...er Standard Enclosure Low Sound Enclosure TYPICAL ENERGY DATA Full Load Drive Motor HP Unloaded Drive Motor HP Fan Motor HP Drive Motor Serviee Factor Drive Motor Speed DIMENSIONS Length Width Height GPM GAL GAL Cu Ft Degrees F PPM dB A dB A BHP BHP BHP RPM Inches Inches Inches 17 34 40 20 0 17 0 10 5 175 195 1 3 92 82 163 0 182 0 32 5 32 5 3 5 1 25 3550 3550 120 52 85 je 7 ...

Page 21: ... 1 1 zJ 7htl IxNwv NnRloAoPEN 80 75 twE3t m l i t4xY 2 Wr AIR uJI I H OPEN EtJu L 4 00 I 10ZI 1 I LoJ lx Nol zz l ALLw4rror uLAmnMIMl i FDR AUXZZ AN 17ZE AlRwCl lCU ZAILTWDhWtWCUS 3 fL IN PMW4TE W M N I 4 uDlsTLnE ARAmw m WktPF IGusE 5 lmmlE ARAm w m INEr Am 1 4 3 o i lm 1 ...

Page 22: ...TION l 1 n7 M 223 wEnuLLw3TH wlnlmcLoED 0 II l r 1 4 W lea mmm llALLaw4Frw uEMANcEu ARolmlNIT FM A z8S M E AIR CRUJAW i ALL TOP DIHIONS ARE IN INUW 3 f 1 u xa N r la ME IN I 4 MDIWIXE bRATIX M LODE s MO if m wmm t 1 z M T MET Am ...

Page 23: ...2ED r EFLUID COOlE4 f FuJ a FILTER r Cmx VALVE N o rAR FllE51 7 W m Iwo ol J 1 2 j gf rn l D ANc v J T mm 11 y_ m3 OF cLEARANfz ML AmY_M WIT 2 ALL T DlkSlCt43 ME IN INWES 1 3 ALL DiMN31Ct IN P S AFEN 4 i l k i i i i WRAl tX B SNIPPQ L 41 31 wm f w c r 5 B 50 In ...

Page 24: ...r 42 s I1044 1 N Iz64e 11 1 I VALE I r h Am 71 s al imoltrwlll 14L4 Alu mm IiOID lu Lw4rr ffuEAwm N 1 lMT R AMY FAEAIRMCU ATW it t ttri FPi l u iFREa N 4 mm nRE dAa4m IA MwPm l oml J 4 4 m ...

Page 25: ...L L CANOPY J N N r I 52 3 13291 Jt ENCL 41 3 1040 150 0 3810 130 5 _ JgJ55 m wfw wON mGTH I 6LILI U IJ II c II I k I I I I v u w r 84 5 2146 OHy A L L L W CANOPY L w VIEW A A 7 7 zJL WIOTH W LOW C A Y 5 w 1 r lA41T ...

Page 26: ...CTRICAL ENCLOSURE 5 3 J L IT CONDUIT CONNECTION OPPOSITE SIDE f E N 000R f L 21 O JL L A A NOTES 1 ALLOW 4 FT OF CLEARANCE ALL A lB lT FOR ACCESS AND FREE AIR CIRCULATION 21 AU TOP DIMENSIONS ARE IN INCHES 31 ALL DIMENSIONS IN PARENTHESIS ARE IN MILLIMETERS 1 4 MOISTURE SEPARATOR IS SHIPPED LOOSE 5 M E SEPARATOR NPT Z INLET AND u ...

Page 27: ... II ISD s I I 11 11 VIEW B 9 d i U lJ m OPm ENCL 4 5 1 t4 ALL SERVICE PIPING 8 0 4 IZB971 A A rL aEfTaL 7 39 7 10091 1 ...

Page 28: ...essurization of system or compressor components can occur resulting in severe personal injury death and property damage Never use plastic pipe rubber hose or soldered joints in any parts of the compressed air system Failure to ensure system compatibility with compressor piping is dangerously unsound Never use a flammable or toxic solvent for cleaning the air filter or any parts Do not attempt to s...

Page 29: ... ORDERING Coltec Industries Quincy Compressor Division maintains replacement parts for Quincy compressors A repair parts list is shipped with all new machines Order parts from your authorized Quincy Distributor Use onlv genuine Q uincv redacement uarts Failure to do so mav void warranty DANGER Air from this compressor will cause severe injury or death if used for breathing or food processing Air u...

Page 30: ... port located at the power input end A volume of air is trapped as the rotor lobes pass the inlet cut off points in the cylinders Compression occurs as the male rotor rolls into the female flute progressively reducing the space thereby raising the pressure Compression continues until the lobe and flute pass the discharge port The compressed air is then discharged There are four complete compressio...

Page 31: ...n cooling the fluid in the tubes To maintain proper compressor operation the temperature of the ambient air should not exceed the temperatures iisted in the Q 4 Specifkations The cooler fins must be kept clean at all times Fluid leaving the cooler passes through a thermal mixing valve before traveling onto the compressor The purpose of the thermal valve is to mix fluid from the cooler with non coo...

Page 32: ...Figure 2 2 Water Cooled fluid and water piping Water Cooled Fluid Coolers tothefluid filter andthe compressor Theair fluid 29 ...

Page 33: ...er pressure settings are available CAUTION The set screw with locknut located on the inlet valve is used to allow adequate air flow during no load operation for proper fluid circulation This setting is preset at factory and no adjustment is necessary DO NOT ADJUSTOR TAMPER WITH THIS SETTING The air forces a piston to move within the cylinder closing the inlet valve The compressor will continue to ...

Page 34: ... Figure 2 3 QMA 50 50H 6O Across the Line Starting Control Piping Schematic 31 CG PG ATG FFI AFI PR V J 1 GP LF 1 r 1 I I i 3WSV I 1 1 Ps I ELECTRICAL ENCLOSURE 7 3WSV 23 1 SEPARATION 31 me ...

Page 35: ...Figure 2 4 QMA 50 50h 60 Wye delta Starting Control Schematic u Ps t ELECTRICAL ENCLOSURE 3WSV 2 3 J J J 1 1 t f REs r r 1 ml BV X 1 Ss RPA SEPARATION 32 ...

Page 36: ...Figure 2 5 QMA 75 Across the Line Starting Control Schematic II i I r L r 1 I p 3WSV 23 Ps 1 ELECTRICAL ENCLOSURE I I r L r Vc m RP OR t Ss RPA 33 SEPARATION __ m m 7 ...

Page 37: ...AGE FLUID FILTER INDICATOR LF 1 GUAGE PANEL INLET VALVE t LINE FILTER r c d N kU 4 PRESSURE CHECK VALVE r f r L ORIFICE PRESSURE GUAGE PRESSUR RWIT M E REGULATOR PRESSUR SHUTTLE VALVE SEPARATOR INDICATOR SEPARATOR SCAVENGE Dccc Dunt D LUG RESERVOIR PRESSURE AFTER SEPARATION VALVE CAPACITY 3 WAY SOLENOIO VALVE I 1 1 0 Iv Vc I It IW 2 r l RES II MPCV BV PO 34 7 ...

Page 38: ...GUAGE FLUID FILTER INDICATOR LF GUAGE PANEL INLET VALVE 9 I LINE FILTER f r MINIMUM PRESSURE CHECK VALVE r r ORIFICE L PRESSURE GUAGE PRESSURE SWITCH I i PRESSURE REGULATOR SHUTTLE VALVE SEPARATOR INDICATOR SEPARATOR SCAVENGE RESERVOIR RESERVOIR PRESSURE AFTER VALVE CAPACITY 3 WAY SOLENOID VALVE tl Ps ELECTRICAL ENCLOSURE SEPARATION t 3WSV SHV I I I fJ r r 1 1 i Ss OR1 WA r c RES 35 ...

Page 39: ...I F T w 1 i GP LF t I PG 7 OR 1 I I I SHV F c 3WSV 2 Vc Ps 3 ELECTRICA ENCLOSURE SHV Ii A A I 3WSV I 3 t l l l_ L RFIA IR FILTER INDICATOR 41R EkjPERATUR GUAGE ANIMUM PRESSURE CHECK VALVE GE rcH JLATOR E IICATOR AVENGE SSURE SSURE AFTER SEPARATION ALVE CAPACITY 3 WAY SOLENOIO VALVE I 36 ...

Page 40: ...iagram is also included in the control panel on all Quincy QMA compressors NOTE Due to continuing product improvements and updates it is suggested that the wiring diagram included in the control panel be used when servicing the electrical controL Note Standard drive motors are open drip proof 3600 and 1800 RPM with a maximum ambient temperature rating of 104 F They are not suitable for salt laden ...

Page 41: ...position of the control selector switch Hourmeter Indicates actual hours of operation Used to determine maintenance intervals Air Pressure Gauge Indicates the receiver pressure available for distribution to the service lines Air Outlet Temperature Gauge Indicates the temperature of the air fluid mixtures as it discharges from the compressor Normal reading 175 to 200 degrees F Fluid Filter Change I...

Page 42: ...ty procedures when moving the unit Location Locate the compressor on a level surface that is clean well lighted and well ventilated Sutlicient space four feet of clearance on all sides and top of the compressor for safe and proper daily inspection and maintenance must be provided The frame base must be supported its entire length Shim where necessary but do not use wood or lumber Ambient temperatu...

Page 43: ... no case should the piping be of smaller size than the connection on the compressor unit Pressure Relief Valves J AN ER Pressure relief valves are to protect system integrity in accordance with ANWASME B19 safety standards Failure to provide properly sized pressure relief valves will cause severe personal injury or death Pressure Relief valves are sized to protect the system Never change the press...

Page 44: ...vicing WA G Relieve compressor and system air pressure by opening the appropriate manual relief valve prior to servicing Failure to relieve all system pressure may result in severe personal injury death and property damage 41 Water and Sewer Facilities at the Installation Site Water cooled models only Make sure the water supply is connected and open Piping supplied by the user should be at least e...

Page 45: ...ould completely fill the sight gauge when the compressor is operating Do not overfUl as the excess fluid will carry over into the plant Briefly jog the starter button allowing the motor to turn 2 or 3 revolutions Observe the drive element for correct direction If incorrect rotation is obsened lmk out power supply and reverse electrical leads L 1 and L2 on starter Fan Rotation air cooled only At th...

Page 46: ...cooling fan rotation Air must exit upward through the cooler Water cooled models Cheek inlet and discharge water piping for proper eormections NOTE The water temperature regulating valve is located in the discharge water line Starting the Comtwessor Open the service valve to the plant air distribution system Select the mode of operation and start the compressor Watch for excessive vibration unusua...

Page 47: ... service 1 Disconnect and lock out the main power switch and hang a sign at the switch of the unit being serviced 2 Close shut off valve block valve between receiver and plant air system to prevent any back up of air flow into the area to be serviced NEVER depend upon a check valve to isolate the system 3 Lock open the manual vent valve and wait for the pressure in the system to be completely reli...

Page 48: ...e pressure to escape before the plug is completely removed Should you hear pressurized air venting through this hole immediately screw the plug back into the reservoir and relieve the pressure in the reservoir before proceeding Each unit is factory filled with QUINSIW synthetic fluid or QUINSYIW F food grade synthetic fluid Mineral oil can be requested and used in specific applications The use of ...

Page 49: ...esulting in the formation of heavy varnish and sludge throughout the system This will result in clogging fluid separators coolers and internal fluid passages in the compressor Warrantv will be voided Compressor Fluid Filter The fluid filter is a spin on fidl flow unit equipped with a remote fluid filter maintenance indicator Replacement of the filter requires spinning off the complete cartridge an...

Page 50: ...ns Spectrochemical Analysis w X T Lead Pb TAN Total Acid L Opp Cu f Tin Alum Sri Al I Time min ration Appearance m Zinc Phos Bari Ca c Siii Zn P Ba Ca Si Antioxidant LeVe Thank you for this opportunity to provide technical assistance to your company If you have any questions about this report please contact me at 517 496 3780 cc Accwscy of recommendations is dependent on representatwe otl samples ...

Page 51: ...M Plasma Emission o Barium PPM Plasma Emission o Iron PPM Plasma Emission o Copper PPM Plasma Emission o Lead PPM Plasma Emission o 0 20 5 1o 20 20 5 1o 5 1o 20 1 5 1o 5 1o 10 10 Tin PPM Plasma Emission o Aluminum PPM Plasma Emission o 5 1o 5 1o 10 10 jSilicon I PPM Plasma Emission I O 10 15 15 lMolybdenum I PPM I plasma Emission I o 0 20 20 lWater Content I PPM I Karl Fisher I 75 200 300 3 30 Par...

Page 52: ...A 50 50H 60 Models The element is of one piece construction that coalesces the fluid mist as it passes through the filtering medi into droplets that fall to the bottom of the separator element seating plate to be picked up by a scavenging tube and returned to the compressor Care must be taken in handling the separator element to prevent it from being damaged The separator element is secured into t...

Page 53: ...bly a bolt on shaft seal adapter with built in scavenge line cavity a check valve between the scavenge line cavity and the inlet valve and a outer cavity fluid slinger Figure 6 3 The fluid shaft seals must be replaced when excessive fluid leakage is detected or when rebuilding the compressor CAUTION QMA compressor units incorporate a fluid scavenge system to complement the use of the triple lip se...

Page 54: ... puller jack screw clockwise in against the end of the rotor shaft Caution I Do Not use an impact wrench with this tool I Preparation for New Seal Installation 1 2 3 4 51 Inspect the rotor shafl for burrs or deep scratches at the wear sleeve area Using a 100 grit emery cloth lightly sand horizontally any rust or LOCTITE that was between the wear sleeve and rotor shaft Using a fine file or emery cl...

Page 55: ...the O ring and seal lip of the outer lubricant slinger Install the outer slinger over the end of the rotor shaft and push into the suction endplate scavenge bore using both thumbs Reinstall the scavenge system line to the check valve located at the inlet valve 10 Reinstall the key hub and drive couplings to the compressor shaft 11 Reinstall the drive motor and remove the supports under the air flu...

Page 56: ... 1 I COMPONENT WITH SRE STRRIGHT THRERD PORT Stepl Install SAEO ringonpofi endoffitting Step 2 Make sure both threads and sealing surfaces are free of burrs nicks scratches or any foreign material Step 3 Lubricate O Ring with light coating of petroleum jelly Step 4 Tighten fitting securely to port NOTE For steel fittings in aluminum cast iron or steel housings Restrain fitting body onadjustables i...

Page 57: ...fILING 1 S DONE vKHERE WITH L L F O RING THREflDHERE I FOR HOLDING POWER ONLY RESISTING PRESSURE BLOWOUT Step 4 Step 5 Step 6 Step 7 Back off lock nut as far as possible Make sure back up washer is not loose and is pushed up as far as possible Screw fitting Hand tightenuntilback up washer contacts faces of the port To position the fitting unscrew by required amount but not more than one fill turn ...

Page 58: ...v The water temperature regulating valve senses fluid temperature and opens or closes regulating water flow from the unit It is factory set to maintain 180 F air discharge temperature Due to ditTerent incoming water temperatures and or pressures at the customers locatio valve adjustment should be checked during start up to maintain 180 F discharge temperature To increase fluid temperature decrease...

Page 59: ...d inspect for scale and corrosion If present this is usually the source of trouble In the case of a closed system the entire system cooling tower cooler inlet and outlet lines should be inspected and cleaned as necessary Except for obvious mechanical failures the solution to most heat exchanger problems lies at the point of use It is the user s responsibility to provide the proper quality of water...

Page 60: ...ow voltage Faultv start switch lCheck the switch for malfimction or loose connections I Povverfailure 57 lCheck power supply I Faultv control relay lReplace relay I Loose wire connections Check all wiring terminals for contact and tightness Faulty High Air Temperature Switch Check HAT switch Contact a qualii3ed serviceman for I 1 repairs I lFaulty transformer lCheck secondary voltage on transforme...

Page 61: ... the service lines Check service lines for leaks with soapy solution Inlet valve not opening fully Correct the situation in accordance with the instructions in Inlet Valve Not Closing in Relation To Air I lDemand section of this trouble shooting guide LOW RECEIVER PRESSURE I PROBABLE CAUSE I CORRECTION I Excessive air demand Reevaluate air demand Add additional compressors as needed Excessive leak...

Page 62: ...re air cooled models only is not restriction to free circulation of cooling air Also check fins at the cooler and if found dust laden clean them with air while the machine is not running Low fluid level in the reservoir Add fluid and bring fluid level to recommended level Also check the fluid system for possible leaks Fluid filter plugged Replace plugged fluid filter 4 Clogged fluid cooler Check f...

Page 63: ...ee lubrication section FREQUENT AIWFLUID SEPARATOR CLOGGING I PROBABLE CAUSE I CORRECTION I Faulty air filter or inadequate filter for the environment If faulty air filter elements replace them If air filter is inadequate for the environment relocate the intake air source Faulty fluid filter Replace fluid filter element Fluid breakdown Correct the situation in accordance with the instructions in F...

Page 64: ...t closing completely Correct the situation in accordance with the instructions in inlet Valve not Opening or Closing in Relation to Air Demand section of this trouble shooting guide FREQUENT FLUID FILTER CLOGGING PROBABLE CAUSE CORRECTION Faulty indicator Replace indicator assembly incorrect fluid filter Use genuine Quincy replacement filters only Faulty incorrect or inadequate air filter Replace ...

Page 65: ...RECTION Incorrect air pressure switch setting Adjust pressure switch to proper setting Faulty air pressure switch Replace switch Faulty blow down valve Repair or replace as necessary Faulty solenoid valve Repair or replace as necessary Faulty differential pilot valve Repair or replace as necessa Leaks in control lines Check all control line fittings and tubing lLeaks in service lines ICheck plant ...

Page 66: ...f the differential pilot provide suftlcient range between the pressure at which valve modulation starts and the pressure at which compressor unloads Normally you will have a 15 psi differential minimum Leaks in control lines Check and repair any leaks Faulty air pressure switch Repair or replace as necessmy Water or ice in control lines These units should be Drain lines service filter check differ...

Page 67: ...ential pressure regulator to obtain desired modulation ramze Readjust air pressure switch so that the compressor unloads at the desired pressure Correct the situation in accordance with the instruction in Inlet Valve not Opening or Closing in Relation to Air Demand section of this trouble shooting guide Replace with new air fluid separator Check gauge for accuracy and replace if necessary Readjust...

Page 68: ...y Check pressure relief valve operation Monthly Service air filter as needed daily or weekly if extremely dirty conditions exists Clean aftercooler and fluid cooler fins Wipe entire unit down to maintain appearance 6 months or every 1000 hours Take fluid sample Go over unit and check all bolts for tightness y 2000 hours Change fluid filter dically yearly Change fluid separator Change air filter Lu...

Page 69: ...s are factory trained and will help keep you in business Call for Authorized Quincy Service For reciprocating and natural gas engine driven helical screw products call 1 217 222 7700 or fax requests to 1 800 219 9124 For all other helical screw products call 1 334 937 5900 4ccqm No S bst te or fax requests to 1 800 219 9131 A QC K GY UNDENIABLY THE WORLD S FINEST COMPRESSORS 1991Qumq CompressorDiv...

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