My two favorite repair techniques; clean it and/or hit it with a plastic hammer
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Our fancy Kaeser compressor stopped compressing Friday morning and the telephone diagnosis from the tech was a sticky solenoid valve in the unloading system. Solution; open door, find one and only one solenoid valve visible, couple of good bangs with plastic hammer, compressor starts compressing again. Cross fingers and hope it keeps doing it which it did for the rest of the day...the real test comes on Monday
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