H for high pressure; L for low pressure
According to the above vehicle parts advice, for the air conditioning pipeline H and L, refers to the air conditioning pipeline high pressure pipe and low pressure pipe distinction, is used for air conditioning maintenance pipeline marking distinction, under normal circumstances are tightened, mainly to prevent the entry of dust or adhesion, the above operation is normal.
Respectively, the high pressure table and low pressure table high pressure is red low pressure is green, there are 3 tubes below red to high pressure table green to low pressure table in the middle of the yellow to the corkscrew and snow `, high and low pressure tubes were connected to the car's high and low pressure tubes, plus snow, will be the high and low pressure table locking, the tube corresponds to the car with the high and low pressure connected to the start of the car to let the compressor work, the middle of the yellow tube connected to the snow exhaust air, open the low-pressure plus finished locking, note: if the Note: If there is no snow in the pipeline first to use the pumping machine to pump empty, pumping and add the first snow without the car.