Question about Air Tools & Compressors
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Posted on Jan 02, 2017
The air is probably coming through the unloader on the pressure switch. This is designed to vent the pressure between the compressor pump and the tank so that the compressor starts easier. This venting should only take a few seconds (5 to 10). If it bleeds air continuously, until the compressor restarts, then the tank check valve is bad. This is usually a fitting that extends into the tank. The small tube to the unloader usually goes directly from the pressure control switch to the tank check. Depressurize the tank, remove the check valve, and try to clean it. If that doesn't work, replace it.
Posted on Dec 29, 2009
Testimonial: "I cleaned the check valve and it's working like new. Thanks a lot!"
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