Whether the crane runs well or not, the air conditioning effect is very important. Today, let`s talk about the use and maintenance of air conditioners. How to operate the air conditioning system First start the engine, turn the wind speed to turn on the air conditioner, press the cooling switch to start the refrigeration function; turn the temperature adjustment knob to adjust the temperature, press the inner and outer circulation button to start the fresh air function, glass defrost, lower air outlet and upper air outlet are opened according to demand Or adjust the angle. When turning off the air conditioner, turn off the refrigeration switch first, and then adjust the wind speed knob to gear 0. What to do for air conditioning maintenance Daily maintenance of the air conditioner mainly focuses on cleaning the dust on the air inlet filter and the surface of the condenser. Open the trunk cover in the control room, remove the filter element bolt on the evaporator box, remove the fresh air converter plug, take out the filter element for blowing or replace the filter element; remove the protective net on the condenser to remove the oil on the condenser.