Check device for an air conditioning system of an automobile and an air conditioner compressor

A check device for an air conditioning system of an air conditioner compressor, comprising;

• a first path, an air conditioner compressor, a condenser, an inflate valve and an evaporator sequentially mounted to the first path, the first path being divided into a plurality of high-pressure sections and several low-pressure sections, the first end and the second end of the first path respectively connected to a high-pressure outlet and a low-pressure inlet of the air conditioner compressor;
• two pressure gauges respectively mounted to the first path, one before the air conditioner compressor and the other after the air conditioner compressor relative to the flowing direction of the coolant in the first path for reading the difference of the pressure value of the coolant at a point before the air conditioner compressor and at a point after the air conditioner compressor;
• and
• whereby the operator can read the pressure values from the two gauges and compare with the previously set pressure values to determine whether the air conditioner compressor is in a right condition when the first path is in a normal condition and the air conditioner compressor is operating.