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How often do I conduct maintenance on my two-stage recip compressor?

WARNING: Before performing maintenance, release air pressure from the system and disconnect, lock and tag the main power supply or disconnect the wire from the engine spark plug.

For two stage, reciprocating compressors under 30 horsepower, see the maintenance schedule and information below.

Daily or Before Each Operation:

  • Check for oil leaks.
  • Check lubricant level. Fill as needed.
  • Drain receiver tank condensate (if automatic draining device is not provided). Open manual drain valve and collect and dispose of condensate accordingly.
  • Check for unusual noise and vibration.
  • Ensure beltguards and covers are securely in place.
  • Ensure engine (if supplied) is filled with fuel and lubricant according to the manufacturer's recommendations.
  • Ensure area around compressor is free from rags, tools, debris, and flammable or explosive materials.
  • Check system oil pressure on pressure lubricated models while compressor is hot.

Weekly

  • Observe operation of safety/relief valves while the compressor is running. Replace safety/relief valves that do not operate freely.
  • Inspect air filter element(s). Clean if necessary.

Monthly

  • Inspect for air leaks. Squirt soapy water around joints during compressor operation and watch for bubbles.
  • Check tightness of screws and bolts. Tighten as needed.
  • Inspect drive belts. Adjust if necessary.
  • Clean exterior.

3/500 * 

  • Change petroleum lubricant while crankcase is warm.
  • Drain compressor oil and clean oil sight glass.

6/100 * 

  • Replace oil filter and change lubricant (if necessary) on pressure lubricated models.

12/2000 * 

  • Install maintenance pak

-- or --

  • Change synthetic lubricant while crankcase is warm.
  • Replace filter element.
  • Indicates months/operating hours, whichever occurs first.
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