Question about Campbell Hausfeld 20 - Gallon Air Compressor

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Electric motor stalls

Why would the electric motor slow down and eventually stall out at 70 psi on a oil bath 120psi compressor?

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A compressor can stall before completing a cycle if the motor is not receiving correct power, such as when there is an extension cord being used or outlet is overloaded with other appliances. Other problems that cause this condition are in-tank check valve is leaking pressure back to the pump and weak or failed capacitor. Some volt meters have setting for checking caps. Reject the capacitor if reading is 90% of rated value. Rare problems include worn bearing or bad contacts on pressure switch. enjoy

Posted on Nov 29, 2008

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Posted on Jan 02, 2017

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Stall is the state the armature is in just at startup. Your compressor will draw maximum power at stall. Some say there is a small surge some nano-seconds after the compressor gets rolling ... just as it begins to slow to operating speed.

A electric surge is a temporary increase in line voltage doe to any of a hundred reasons. There is a surge in your home everytime a motor starts. Lightening strike.

Have I properly addressed your question? or have I missed the boat.

Can I recommend Wikiedia for additional reading?

Thanks

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