MAINTENANCE APPARATUS REFRIGERANT INJECTION METHOD FOR AIRCONDITIONER OF A CAR

摘要

Automotive air conditioning maintenance device of the present invention is achieved by having a low-pressure sensor, a high pressure sensor, a temperature sensor and controller. The low pressure sensor and the high-pressure sensor is connected to a low pressure line and high pressure line detects a pressure of the refrigerant, and to generate a low-pressure and low-pressure detection signal to the detection value. A temperature detecting sensor is connected to the low voltage line detects the surface temperature of the low-pressure line, and generates a temperature detection signal for the detection value. Controller is a low-pressure detected signal, a high pressure detection signal and the temperature detection signal generated from the data on the cause, judgment, and measures in accordance with the pressure and temperature detected during inspection of the car air conditioner is stored in advance, a low pressure sensor, a high-pressure sensor and a temperature sensor the measures corresponding to the input received to be displayed through the display. In addition, the manifold block, low voltage sensors, automotive used car air conditioning maintenance unit formed by having a high-pressure sensor, temperature sensor and controller air conditioning refrigerant injection method after starting to inject refrigerant for automotive air-conditioning through the manifold block temperature sensor the when the surface temperature of the low-pressure line of the car air conditioner is detected low quality by setting its value to the reference temperature, and recovering the refrigerant of a car air conditioner which time the surface temperature of the low-pressure line is detected by the temperature sensor higher than the reference temperature sikimyeo, to stop the recovery of the refrigerant when the surface temperature of the low-pressure line is detected via the temperature detecting sensor when the reference temperature.