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What is the correct method for adding refrigerant?

1 Answers

LeChloe

07/30/25 7:39am

There are two methods for adding refrigerant: 1. High-pressure side charging: Charging from the bypass port (multi-purpose channel) of the compressor discharge valve (high-pressure valve) is called high-pressure side charging, and the refrigerant added is in liquid form. It is characterized by safety and speed, and is suitable for the first charging of the refrigeration system, i.e., the system charging after leak detection and vacuuming. However, it must be noted that the compressor must not be turned on during charging (the engine must be stopped), and the refrigerant tank must be inverted. 2. Low-pressure side charging: Charging from the bypass port (multi-purpose channel) of the compressor suction valve (low-pressure valve) is called low-pressure side charging, and the refrigerant added is in gaseous form. It is characterized by slow charging speed and can be used when supplementing refrigerant to the system.

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