What is 'duty cycle' ?

Duty Cycle is the amount of time that a compressor can be run in a full cycle (typically one hour) that includes the compressor’s run time and rest time. Select VERBAIR compressors are equipped with a thermal overload protector to protect the unit in case of over duty cycle or high temperature operation.

Why does the engine need to be running while the compressor is on?

The compressor operates at 13.8 volts while in use, and the battery does not produce enough voltage without an alternator to recharge it, which could cause high amp spikes or drain your battery.

The compressor was operating for a long time and now it won’t turn back on. Did I damage the compressor?

Unlikely. If the compressor is equipped with a thermal overload protector, it will keep the motor from overheating to the point of permanent damage. Allow the compressor to cool for 30~45 minutes before you attempt to turn the unit on again.