IR T-21 compressor hums sometimes

by Tom
(Livonia mi)

When compresser starts it hums about 3 out 5 starts unloader valve and check valve ok


Ir t21 compresser 60 gallon 5 horse

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Jun 02, 2017
IR T-21 compressor hums
by: Doug in s.d.ca.

Sounds like your centrifugal switch may be failing. Or, might just be dirt on the contacts.

Check that and let us know, 'k?

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