Installation, Operation & Maintenance Manual - Acme Fluid Handling

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Chapter 4—Routine Maintenance ChartItem to Check Daily Weekly Monthly Six Months YearlyCrankcase oil pressureCompressor discharge pressureOverall visual checkCrankcase oil level ** X**Drain liquid from accumulation pointsClean cooling surfaces on compressorLubricator supply tank level (if any)Check belts for correct tensionInspect valve assembliesLubricate motor bearings in accordance withmanufacturers’ recommendationsInspect motor starter contact pointsPiston rings * X*XXX* Piston ring life varies greatly, depending on application, gas, and operating pressures. Consult factory foradditional recommendations for your specific application.** Change oil every 2,200 hours of operation or every 6 months, whichever occurs first. If the oil is unusuallydirty, change it as often as needed to maintain a clean oil condition. Change replacement filter 4225 withevery oil change.*** Liquid traps should be drained prior to startup.X***XXXXXX16
Chapter 5—Routine Service and Repair ProceduresCAUTION: Always relieve pressure in the unit beforeattempting any repairs. After repair, the unit shouldbe pressure tested and checked for leaks at all jointsand gasket surfaces.If routine maintenance is performed as listed in chapter4, repair service on your Corken gas compressor isgenerally limited to replacing valves or piston rings.When it comes time to order replacement parts, be sureto consult the part details appendix in the back of thisInstallation, Operation & Maintenance (IOM) manual for acomplete list of part numbers and descriptions.5.1 ValvesTest the compressor valves by closing the inlet pipingvalves while the unit is running; however, do not allowthe machine to operate in this way very long. If theinlet pressure gauge does not drop to zero almostimmediately, one or more of the valves is probably eitherdamaged or dirty. It is possible, of course, that thepressure gauge itself is faulty.Inspect valves for breakage, corrosion, and scratches onthe valve disc and debris. In many cases, valves may simplybe cleaned and reinstalled. If the valves show any damage,they should be repaired or replaced. Replacement isusually preferable, although individual parts are available.If valve discs are replaced, seats should also be lappeduntil they are perfectly smooth. If more than .005 in. mustbe removed to achieve a smooth surface, the valve shouldbe discarded. If discs are replaced without relapping theseat, rapid wear and leakage may occur.Each suction and/or discharge valve assembly is easilyremoved as a unit for inspection. If any part of the valveassembly is broken, the valve assembly should be replaced.See valve assembly parts details in the appendices for acomplete list of part numbers and descriptions.If a valve is leaking due to dirt or any other foreignmaterial that keeps the valve plate and seat from sealing,the valve may be cleaned and reused. New gaskets and/or O-rings should be used to assure a good seal.The valve holddown assemblies and valve assemblies onthe following pages show the various specifications usedon models 91, 291, 491, 691 and 891 compressors. Sincemore than one suction valve arrangement is available foreach model of compressor, it is necessary to know yourcomplete model number so you can identify the valvetype specification number (see example listed below).Model number 491AM 3 FBANSNNValve type = spec 3In most cases for liquid transfer and/or vapor recoverycompressors, the valve type will be spec. 3.Valve Holddown Assemblies: Depending on your modelof compressor, the valve holddown assembly has all or acombination of the following:1. Valve cap2. Valve cap O-ring3. Holddown screw4. Valve cover plate5. Valve cover plate bolts6. Valve cover plate O-ring7. Valve spacer (model 491 only)8. Valve cage9. Valve assembly10. Valve gasketValve Assemblies: Depending on your valve specification,the valve assembly has all or a combination of thefollowing:1. Gasket2. Adjusting screw3. Relief ball spring4. Relief ball5. Valve seat6. Valve plate7. Spacers8. Washer9. Valve spring10. Suction valve post11. Valve bumper12. Valve gasketSee valve holddown and valve assembly part detailsin the appendix for a complete list of part numbersand descriptions.Valve Inspection and/or Replacement for Models 91and 291 CompressorsBefore removing and inspecting the valves, begin bydepressurizing and purging (if necessary) the unit.17
Page 5 and 6: this by withdrawing vapors from the
Page 7 and 8: Corken’s automatically reversible
Page 10 and 11: 2.4 Liquid TrapsCompressors are des
Page 12 and 13: 2.5 Driver Installation / Flywheels
Page 14 and 15: Chapter 3—Starting Up Your Corken
Page 18 and 19: Disassembly1. Unscrew the valve cap
Page 20 and 21: of damage to cylinders is corrosion
Page 22 and 23: 5. Push down on washer and insert r
Page 24 and 25: 5.9 Servicing the Four-Way ValveUnl
Page 26 and 27: Appendix AVertical Single-Acting Mo
Page 28 and 29: Appendix B—Vertical Single-Acting
Page 34 and 35: Appendix C—Compressor SelectionCo
Page 36 and 37: Appendix C—Compressor SelectionPr
Page 38 and 39: Appendix D—Outline DimensionsMode
Page 42 and 43: AUTOMATIC LIQUID TRAPLIQUID LEVEL S
Page 50 and 51: Appendix F—91 and F91 Head and Va
Page 52 and 53: Appendix F—91 and F91 Piston Asse
Page 54 and 55: Appendix F—91 and F91 Connecting
Page 56 and 57: Appendix F—91 and F91 Crankcase A
Page 58 and 59: Appendix G—291 and F291 Head and
Page 60 and 61: Appendix G—291 and F291 Piston As
Page 62 and 63: Appendix G—291 and F291 Connectin
Page 64 and 65: Appendix G—291 and F291 Crankcase
Page 66 and 67:
Appendix H—490, 491, and F491 Hea
Page 68 and 69:
Appendix H—490, 491, and F491 Pis
Page 70 and 71:
Appendix H—490, 491, and F491 Con
Page 72 and 73:
Appendix H—490, 491, and F491 Cra
Page 74 and 75:
Appendix I—691 and F691 Head and
Page 76 and 77:
Appendix I—691 and F691 Piston As
Page 78 and 79:
Appendix I—691 and F691 Connectin
Page 80 and 81:
Appendix I—691 and F691 Crankcase
Page 82 and 83:
Appendix J—D891 Head and Valve As
Page 84 and 85:
Appendix J—D891 Crosshead Guide A
Page 86 and 87:
Appendix J—D891 Connecting Rod As
Page 88 and 89:
Appendix J—D891 Crankcase Assembl
Page 90:
CORKEN, INC. • A Unit of IDEX Cor
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Installation, Operation & Maintenance Manual - Acme Fluid Handling

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