LEAKS, DETERMINING USING VACUUM TEST OR A/C Service Station PRESSURE TEST

• Small leaks (less than 100 g (3.5 oz) of refrigerant loss per year) are not often detected with the vacuum test or with the pressure test. The incoming air and/or the amount of refrigerant flowing out is too small to be able to find the faulty location based on noise.
• Leaks on the refrigerant circuit that are greater than 100 g (3.5 oz) of refrigerant loss each year are also not always detectable with the vacuum test or with the pressure test, depending on the ambient conditions (ambient noise, leak location etc.). The incoming air and/or the amount of refrigerant flowing out may be too small to generate any noise that would indicate a faulty location.
• Depending on the ambient conditions, larger refrigerant circuit leaks (such as stone impact to the gas cooler (condenser) with a refrigerant loss greater than 100 g (3.5 oz) per day) can be detected, for example, by noises that are produced during the vacuum test or the pressure test at the faulty location. Refer to REFRIGERANT CIRCUIT, EVACUATING .

-- Perform a vacuum test. Refer to REFRIGERANT CIRCUIT, EVACUATING .

-- Perform a pressure test. Refer to REFRIGERANT CIRCUIT, CHARGING .

-- Perform an external pressure test. Refer to LEAKS, DETERMINING VIA PRESSURE TEST (WITH FORMING GAS) AND LEAK DETECTOR OR LEAK DETECTION SPRAY .