1. Turn on the unit with the Switch on the control panel. See FIGURE 4 on page 6. 2. If, after the unit has warmed up, you don’t hear the fan running, there is likely not enough pressure to turn on the pressure switch. Turn off the unit and the compressor. Close the Air Inlet (#6). Then, turn the Air Dryer back on and it will build up pressure in a few minutes. Open the Air Inlet (#6). Turn on your compressor and let air in slowly at first. During operation, dry air will pass through the unit to