About the switch machine description. Turn off the air compressor switch first, then unplug the power supply, otherwise the airflow will rise, it will easily burn the motor and shorten the life of the machine. No lubrication for product work, low cost, long life and lower maintenance costs. Fans and heatsinks have a good heat dissipation system to make the air compressor more stable, to effectively protect the engine, to prevent overheating and burnout of the machine, and at the same time to start the machine immediately after plugging in without power drain. Pure copper wire motor, strong power, durable. Bleed valve for oil separator...