| 摘要 |
Electronically automated equipment utilized for diagnostic evaluation and repair of automobile air conditioning systems. Test connections provide sensors to measure the various pressures and temperatures in the operating system which are selectively connected to appropriate readout devices. Various hand actuated switches are provided to sequentially actuate the respective test circuits. If the circuits indicate a fault within the air conditioning system, the balance of the manually operated switches are operable to evacuate the system to enable repair and subsequently to recharge the system to an optimum operating condition. Additional features, in keeping with the electronic nature of the system, are capacitive measurement device to precisely determine the amount of refrigerant to be charged into the system, and a thermostatically controlled heater to assure suitable refrigerant temperature and pressure during the charging cycle.
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