Install ducted exhaust equipment.

 Please ask the factory to improve the power system.

 Replace the temperature controller.

 Replace the overload protector.

 Perform maintenance on the starter contacts.

 Replace the oil and gas separator (when the pressure difference is greater than 0.8-1kg).

 Add grease to the motor bearings.

 Replace the motor bearings.

 Remove the motor for insulation reinforcement treatment.

 Tighten the motor wiring again.

 Clean and maintain the air inlet.

 Loosen the transmission belt, with a normal tension of 0.8-1.0cm downward pressure distance.

 Replace the air filter (when the vacuum value is greater than 5psi)