I just bought an air compressor at an estate sale. I know it works right now.But not how well?

February 28, 2010 by admin · 1 Comment
Filed under: Maintenance & Repairs 
air Compressor
FLETCH 001 asked:

I did not find a label stating the capacity at 40 or 90 PSI nor CFPM It is either not there or it is painted over. How can I determine what the capacity is? In addition The electric cord, while in good condition does NOT have a grounded plug. I want to replace it with a three wire cord and plug. Is there anything in particular I should be aware of when swapping out the cord? While checking out the compressor what else should I be aware of?

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One Response to “I just bought an air compressor at an estate sale. I know it works right now.But not how well?”
  1. oil field trash says:
    March 2, 2010 at 11:54 am

    Is the make or model number shown? That might be a clue to capacity and max pressure

    Does it have a tank? If so, how big is it. With that information you could estimate the pumping rate.

    Does it have a relief valve? All compressors should have a relief valve specially if there is a tank involved.

    Is the plug the original plug? Is so it might be one of the much older model that didn’t have a ground wire. Also some small models are made so there is no way a short circuit can reach the case.

    Is the compressor a diaphragm of piston type compressor? I have a very old Craftsman diaphragm compressor with a two wire plug and no tank. It was designed to be used with a constant bleed paint Spray gun. It could also be used to pump or car tires. It had no relief valve. oil field trash

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