Quincy Compressor QR-25 310, Instruction Manual

Page 1: ...pressors CAUTION Vacuum pumps are complicated and can cause serious injury or death if operated improperly Before installing or operating this vacuum pump read and understand this manual and follow all safety precautions I 52201 104 February 1994 ...

Page 2: ...ear Quincy Compressor will remind you by mail that a second year of warranty may be obtained by purchasing a second warranty maintenance kit Kits may be purchased from the same place you bought your compressor Your basic compressor will have the same coverage for the secondyearas it had for the first You simply follo wthe recom mended maintenance spelled out intheinstruction manual The two year wa...

Page 3: ...ichever is longer Parts purchased outside the compressor s warranty period are warranted for ninety 90 days from the date of distrlbutar sale or one 1 year from the date of shipment from the factory whichever occurs first Normal maintenance items and promdures are not warranted unless found to be defective m material or workmanship i e but not limited to filters gaskets rings valves and control li...

Page 4: ...ystem l2 Compressed ArDischarge System l3 SECTION 4 START UP OPERATION Pre Starting ChecMist l5 Initial Starting Operating l6 Daily Starting Checklist 17 SECTION 5 MAINTENANCE LUBRICATION Stopping for Maintenance l8 Maintenance Schedule l8 Maintenance Schedule Checklist Sample l8 Lubrication 19 Pulley Sheave Alignment Belt Tension 2O Pressure Switch Adjustment 22 Reversal of Compressor Rotation 23...

Page 5: ...pment should be read and understood prior to starting the compressor If there are any questions regarding any part of the instructions please call your local Quincy Compressor Distributor or the Quincy Compressor factory before creating a potentially hazardous situation Life limb or equipment could be saved with a simple phone call Compressors are precision high speed mechanical equipment requirin...

Page 6: ...e compressor whichever is lower Make a general overall inspection of the unit daily and correct any unsafe situations Reckless behaviour of any kind involving compressed air is dangerous and can cause very serious injury to the participants c Provisions should be made to have the instruction manual readily available to the operator and maintenance personnel If for any reason any part of the manual...

Page 7: ...nce this printing Quincy Compressor reserves the right to change specifications without incurring any obligation for equip ment previously or subsequently sold Summary of Changes to This Manual since previous printing dated August 1992 Model 240 was included in the Limitations section of the Warranty information pertaining to Principles of Dryers Filters was added to Section 2 0maximum P S I G for...

Page 8: ... valve closes and air is trapped in the cylin der The air is then compressed in the cylinder during the upstroke of the piston Total compression from atmospheric pressure to the final discharge pressure is accomplished in one stroke of the piston Two Stage Compressors During the downstroke of the piston of a two stage compressor air is drawn through an intake valve in the head of the compressor in...

Page 9: ... fins of the cylinder head s and intercooler fins of two stage compressors to cool the compressor QR 25 series compressors are normally setup at the factory with a sheave that turns in a counterclockwise rotation For special applications clockwise rotation compressor sheaves are available as optional equipment on some models Due to standard drive motor limitations it is recommended that the compre...

Page 10: ...ssor with no added control I1 t 1 Y features r a_ld I Control Version L Consists of unloader tower s located on the head of A PIX 1069 the compressor a hydraulic unloader mounted on the bearing carrier and Fig 2 2 Control Version L a pressure switch This version is recommended for those applications where the compressor will not be required to start more than six 6 times per hour A compressor equi...

Page 11: ...ith a hydraulic unloader added to protect the compressor in the event of an oil pressure drop Control Version LVD Unloader tower s a pilot valve with a manual shut off a hydraulic unloader a check valve assembly and a pressure switch make up the LVD Control Version This version is recommended wherever the degree of demand and usage is variable The manual shutoff allows for the selection of either ...

Page 12: ... any other component in the system Step 6 Read and understand the safety precautions contained within this manual The successful and efficient operation of compressor equipment depends largely upon the amount of care taken to install and maintain the equipment Quincy Compressor strongly recommends that any or all person s in charge of install ing maintaining or servicing one of our compressors rea...

Page 13: ...d proper inspection cleaning and maintenance The compressor must not be installed closer than 24 inches to a wall or another compressor This allows ample circulation of air across the compressor cylinders heads and cooler if so equipped If at all possible the pulley drive system i e motor pulley compressor sheave belts and guard should be located next to a wall to minimize any danger created by th...

Page 14: ...llation electric motor wiring and all electrical controls must be in accordance with NFPA 70 1993 National Electric Code National Electric Safety Code state and local codes Failure to abide by the national state and local codes may result in physical harm and or property damage High voltage may cause personal injury or death Disconnect and Iockoutitagout per O S HA regulation 1910 147 all electric...

Page 15: ...ed range Whatever combination is employed the drive pulleys compressor sheaves must be properly aligned and drive belt tension set to specifications refer to SECTION 5 Pulley lS zeaveAlignment Belt Tension Improper pulley sheave alignment and belt tension can cause motor overloading excessive vibration and premature belt andlor bearing failure Excessive compressor RPM s speed could cause a pulley ...

Page 16: ...ystem Air Intake A clean cool and dry air supply is essential to the satisfactory operation of your Quincy air compressor The standard air filter that the compressors equipped with when leaving the factory is of sufficient size and design to meet normal conditions when properly serviced in accordance with the maintenance section of this manual If however the compressor is to be installed in a loca...

Page 17: ...not exceed 10 of the air receiver pressure Install auxiliary air receivers near heavy loads or at the far end of a long system This will insure suilicient pressure if the use is intermittent or sudden large demands are placed on the system SLOPE I ALLOWS WISnJSS TO ORAIM TOWARO UO STIRE TRAPS II VI E I I Fig 3 1 Typical Drop Leg Component Location PM 1007 Discharge piping should slope to a drop le...

Page 18: ...hangers moisture separators and traps shall be in accordance with ASME Boiler and Pressure Vessel Code Section VIII and ANSI B 19 3 safety standards They should be equipped with a pressure reliefvalve pressure gauge tank drain manual shutoffvalve refer to Fig 3 1 Typical Drop Leg Component Location ASME coded pressure vessels must not be modified welded re WMNING paired reworked or subjected to op...

Page 19: ...thout lubricant in the crankcase Add correct amount of specified oil to the crankcase Refer to SEC TION 5 Lubrication for quantity and types of lubricant to be used Check motor pulley and compressor sheaves for alignment and tightness on shaft Refer to SECTION 5 Pulley Sheave Alignment Belt Tension Manually rotate the compressor sheave several rotations to be sure there are no mechanical interfere...

Page 20: ...ration and strange noises If either exist stop the compressor Refer to SECTION 6 Troubleshooting for help in i X 1068 Fig 4 1 Oil Pressure Adjustment determining the cause of such problems If you are starting a pressure lubricated model check the oil pressure Compressors producing up to 250 p s i g of discharge air pressure should maintain 18 to 20 p s i g of oil pressure High pressure rated compr...

Page 21: ...ote Continuous Run Units Prior to starting a continuous run unit pull the ring attached to the pilot valve out and turn the finger nut in clockwise until it seats against the pilot housing Now the compressor can be started unloaded Once the compressor is running at full speed the finger nut on the pilot valve can be turned out counterclockwise until it seats against the pull ring Start compressor ...

Page 22: ... the area to be serviced Wait for the unit to cool before starting to service Temperatures of 125 F can burn skin Some surface temperatures exceed 350 F when the compressor is operating Maintenance Schedule To assure maximum performance and service life of your compressor a routine maintenance schedule should be developed A sample schedule has been included here to help you to develop a maintenanc...

Page 23: ...sure lubricated models should be thoroughly cleaned with a safety solvent during every oil change If excessive sludge build up exists inside the crank case clean the inside of the crankcase as well as the screen Never use a flammable or toxic solvent for cleaning Always use a safety solvent and follow the directions provided Every 2000 Hours or Every 12 Months Inspect the pressure switch diaphragm...

Page 24: ...or in ambient temperatures lower than 15 F A crankcase heater is recommended for compressors operating in temperatures under 32 F A new or rebuilt reciprocating compressor should be run for a total of 100 hours at full discharge operating pressure to break in the new piston rings Until the rings are seated the compressor will discharge higher than normal amounts of oil In light of this fact the oi...

Page 25: ...ulley Recommended Cross Dia Range Deflection Force lbs Section inches Minimum Maximum 3 0 3 2 2 3 3 2 A 3 4 3 6 2 5 3 6 3 8 4 2 2 9 4 2 4 6 7 0 3 5 5 1 4 6 4 0 5 9 B 5 0 5 4 4 5 6 7 5 6 6 4 5 0 7 4 6 8 9 4 5 8 8 6 Step 2 Determine the amount of deflection in inches required to mea sure deflection force in pounds by multiplying the span length x l w 016 i e 32 span length x VW 016 1 z 50 of deflect...

Page 26: ...justment screwlh clockwise to increase the amount of air pressure required to open the switch and stop the unit Screw the spring loaded adjustment screwor4 counterclock wise to decrease the amount of air pressure re quired to open the switch and stop the unit Standard pressure switches supplied by Quincy Compressor are equipped with a fixed 20 p s i g approx differential Optional switches include ...

Page 27: ... Re install the six 6 housing bolts and torque them in a star or cross pattern to six 6 ft lbs Step 4 Remove the countersunk pipe plug from the oil pump housing and relocate it in the opposite bottom hole SeeFig 5 5 Relocating Countersunk Pipe Plug Failure to relocate this pipe plug will result in complete loss of oil flow throughout the compressor Compressor seizure will result and warranty will ...

Page 28: ... 40 30 20 20 17 30 17 30 50 50 50 50 50 50 50 50 50 50 20 30 30 50 65 65 65 80 50 50 50 50 65 65 65 40 30 30 40 40 75 75 30 30 30 30 90 90 90 90 90 75 90 90 90 90 30 30 30 75 90 90 90 150 150 150 150 150 150 150 150 150 NIA N A NIA NIA NIA NIA NIA NIA NIA NIA 50 50 50 50 50 50 50 50 50 50 NIA NIA NIA 50 50 50 50 75 50 50 50 50 50 50 50 50 70 70 70 WA 70 70 70 60 70 60 60 60 60 60 60 60 60 60 60 60...

Page 29: ...rankcase Compressor does not run long enough to get hot and vaporize the liquids lubricant appears milky squeezed out of the air during compression Leaking water jacket or cylinder head c Incorrect or inferior grade of lubricant Cooling water circulating in compressor too cold System pressure leaking back through discharge valve Rusty valves and or cylinders Compressor operated too infrequently Co...

Page 30: ...rs defective Excessive system leakage Compressor operating at incorrect speed sUnloader pilot differential set too close Pressure switch defective Defective pressure switch Moisture or oil buildup on the pressure switch diaphragm Ruptured diaphragm Burned contact points QPlugged air passage from the receiver to the pressure switch Loose electrical connection Excessive air pressure iAir pressure ga...

Page 31: ...nadequate cooling water flow ventilation or recirculation of hot air Pulley sheave rotation wrong Incorrect speed Running clearances insufficient piston to cylinder wall or running gear Lubrication inadequate Compressor incorrectly sized High discharge temperature Defective water temperature regulating valve Inadequate cooling water flow Compressor valve assemblies defective Discharge pressure too...

Page 32: ...e voltage To determine maximum Loose electrical connection amperage allowed multiply QWire size too small the FLA on the motor QIncorrect oil nameplate by the service Discharge pressure too high factor Intercooler plugging CAUTION Bearings tight or seizing Motor surface temperature No crankshaft endplay normally exceeds 170 F Motor sized incorrectly Motor defective Drive belts too tight Failure to...

Page 33: ...872 0 858 0 839 0 805 0 784 1 00 0 998 0 972 0 959 0 944 0 931 0 917 0 902 0 886 0 868 0 853 0 837 0 818 1 00 1 00 0 987 0 982 0 969 0 962 0 954 0 942 0 940 0 923 0 925 0 908 0 890 0 873 0 857 0 840 Notes 1 Correction factors are approximate and shown for single stage com pressors 2 For two stage compressors use the interstage pressure to find the correction factor 3 This chart does not allow for ...

Page 34: ...350 370 390 5120 W5120 35 5 37 0 38 5 40 0 41 5 43 0 44 5 46 0 47 5 49 0 50 5 52 0 53 5 55 0 57 0 58 5 60 0 32 0 34 0 41 0 41 0 41 0 33 0 35 0 43 5 43 5 43 5 34 0 36 5 46 0 45 5 46 0 35 0 38 0 48 5 47 5 48 5 36 0 39 0 51 5 49 0 51 5 37 0 40 5 53 5 51 0 53 5 38 0 42 0 56 0 53 0 56 0 39 0 43 0 40 0 44 5 41 0 46 0 42 0 47 0 43 0 44 0 45 0 46 0 47 0 48 0 40 0 42 5 45 0 47 5 50 5 52 5 55 0 QR 25 Series...

Page 35: ...Decal Locations m P J mm m m m 9 niilmli QR 25 Series Typical QR 25 Unit with Horizontal Receiver QUINCY COMPRESSOR 52201 104 31 February 1994 ...

Page 36: ...ml m o P A l l Typical QR 25 Unit with Vertical Receiver QR 25 Series QUINCY COMPRESSOR 52201 104 32 February 1994 ...

Page 37: ... Cnm Coco Coco rl AIAl I G w F 02 In 0 Al Typical Engine Driven Q R 25 Unit with Horizontal Receiver U3 N d U cp N oa lmw r l NJi OF z a3 a LIE Ov 0 f w m o 1 QR 25 Series QUINCY COMPRESSOR 52201 104 33 February 1994 ...

Page 38: ...uincy parts accessories for a wide range of call 217 222 7700 Quincy products cr fax requeststo 1 800 219 9124 Quincy Service specialists are factory trained and will For all other helical screw products help keep you in business Call for Authorized Quincy calll 334 937 5900 Service or fax requeststo 1 800 219 9131 Acce No Subst t tes A Quincy Compressor C3 v UNDENIABLE THE WORLD S MVEST COMPRESSO...