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You should take your car to a Car Airconditioning Service Centre, as there may be other worn Items in the Airconditioning Circuit. For example, the seal in the Pump may be worn and the Refrigerant Gas has escaped out of the System. It really needs a Pro to look at it.
To endure that the ONLY gas in the system is refrigerant.
Suction gas
Condensor
orifice
if system is empty, u need to charge with correct amount of oil and refrigerant. the oil actually carries the refrigerant in the system if just recharging, buy the refrigerant that has oil already added, these are available at most auto stores
Regular 87 Octane unleaded gasoline for the engine.R134a refrigerant for the AC system
Two problems that a refrigeration system could have are compressor problems or a lack of or loss of refrigerant gas.
The pressure will rise and the oil can thin.The purpose of the out door section of a residential a/c system is to condense gas into a liquid my means of cooling the gas.
The Refrigerant enters the condenser as a high pressured gas, the condenser then condenses that gas and changes it to a liquid form.
Refrigerant gas. Not natural or propane gas.
usually hydrogen or helium gas were choose as inlet gas/ carrier from evaporator to absorber coil. Inlet gas contribution toward total pressure in the system where according to formula to determine partial pressure in the system PTOTAL SYSTEM = P HYDROGEN (inlet gas ) + P AMMONIA (REFRIGERANT )