Question about Chicago Pneumatic QRS15HPD-3 15HP 45CFM Quiet Rotary Screw Air Compressor with Air Dryer

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I have a qrs-4000 compressor that trips the motor overload only once every morning at first start-up. then it never does it again until the next day.

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I recommend you check the running amps at start up in the morning. Hopefully you will find the amps are over the overload rating. Check the amps again later in the day.Hopefully they will be below the overload rating. If this is the case you will need to go up on the amperage slightly to prevent the morning trip. Also make sure all incoming wiring are tight. Everything in the morning is cooler, not lubricated, cold oil etc. After warm up the motor doesn't have to work as hard and pulls less amps. Are you using a synthetic oil? If not synthetic oil along may be the answer to your problem.

Posted on Mar 21, 2011

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MOTOR THERMAL OVERLOAD
PROTECTOR: The electric motor
has a manual thermal overload
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if this helps please vote me a fix ya

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