I received my new compressor today. The break-in instructions say:
PREPARATION FOR STARTING
Push in switch to OFF position, and plug in power cord at the wall.
Pull up the red power switch and run compressor unit for 30 minutes to break in the pump parts.
Turn regulator knob fully counterclockwise to cause air to bleed off.
Attach the hose and tool to the compressor using the Euro type quick release couplings on the compressor.
The problem is about 30 seconds after starting the compressor it shuts off because it has reached the maximum pressure.