Answer: (1) Switch the compressor control switch to the single control position.
(2) Press the "unload" button and run for at least 20 to 30 seconds.
(3) Press the "stop" button, the "run" signal light goes out, and the motor stops. Currently, most units have simplified the shutdown steps to: just press the stop button, the air intake valve automatically closes, and then the discharge valve unloads for 20 seconds before the unit automatically stops.
(4) Open the discharge valve to discharge the condensed water in the water-gas separator.
(5) Drain the cooling water in the cooler.
(6) Close the outlet door.
