What to do if air enters the refrigeration system of the industrial chiller?
21 Nov,2024
In the daily operation of industrial chillers, it is easy for air to enter the refrigeration system. The low temperature in the refrigeration system does not condense the air into liquid, which instead affects the heat dissipation of the condenser, leading to increased condensing pressure and causing the industrial chiller to be unable to operate normally. Therefore, it is necessary to expel the air from the industrial chiller to maintain its normal operation.
The correct approach is to close the liquid outlet valve of the storage tank or the liquid outlet valve of the condenser; start the compressor to draw the refrigerant from the low-pressure section into the condenser or storage tank; after the pressure in the low-pressure system stabilizes at a vacuum state, stop the machine; loosen the bypass plug of the exhaust shut-off valve by about half a turn, allowing the exhaust valve rod to form a three-way situation, letting the high-pressure gas escape from the bypass hole. Use your palm to block the exhaust airflow; when your hand feels cool air and has oil traces, it indicates that the air has been mostly expelled, and you should tighten the plug, reverse the exhaust valve rod, and close the bypass hole.
It is important to note that the air release time for the industrial chiller should not be too long; it can be done continuously 2 to 3 times to avoid wasting refrigerant. If there is a spare shut-off valve installed at the top of the condenser or storage tank, air can also be released directly from that valve.
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