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Charging of refrigerant in unitary air-cooled industrial air conditioner/chiller

Update:15-12-2022
Summary:

The unit has been charged with sufficient refrigerant b […]

The unit has been charged with sufficient refrigerant before leaving the factory. However, when the cooling (heating) effect is poor during use, the refrigerant may need to be replenished. When charging, connect the gas receiver of the refrigerant cylinder to the low-pressure side charging valve. Before connecting and fastening, firstly discharge the air in the cylinder receiver with refrigerant gas, then fasten the joint nut, and open the valve of the refrigerant cylinder to charge the refrigerant with the machine running. During the charging process, a weighing scale should be used to measure the refrigerant, and every time a certain amount of refrigerant is charged, wait for 10~20 minutes to observe the high and low pressure until the system is normal.

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