Oil or oil-free air compressor

Break in the new Air Compressor as follows: a. Turn the Power Switch off and unplug the unit. Insert a male coupler (sold separately) into the female Quick Coupler and fully open all regulators and valves. b. Plug in the Power Cord. c. Turn the Power Switch ON. d. Let the unit run for 30 minutes. Air will expel freely through the Coupler. (copied from the manual)
This break-in period is very important, it's printed in the manual, a must do for direct drive compressors.