How to recover the refrigerant from the industrial chiller to the cylinder?

The refrigerant is stored in a special steel cylinder, and the steps to recover the refrigerant in the industrial water cooler to the steel cylinder:

1. Connect the repair valve with a pressure vacuum gauge to the bypass hole of the suction shut-off valve first, and adjust the suction shut-off valve to the three-way position.

2. Turn the exhaust shut-off valve counterclockwise to the fully open state, unscrew the screw plug of the bypass hole of the exhaust shut-off valve, and install the multi-purpose connector.

3. Use a hose to connect the empty refrigerant cylinder to the multi-purpose joint of the exhaust shut-off valve, but do not tighten the joint at the end of the refrigerant cylinder.

4. Slightly open the exhaust shut-off valve, remove the air in the connecting hose, and tighten the joint.

5. Fully open the valve of the refrigerant cylinder, and use cooling water to continuously flush the refrigerant cylinder.

6. With pneumatic compressor, slowly close the exhaust shut-off valve clockwise, and the refrigerant in the industrial chiller is gradually compressed into the refrigerant cylinder.

Regardless of whether the refrigerant of the industrial chiller is recovered to the accumulator or the cylinder, as long as the refrigerant recovery is completed, the pressure of the pressure gauge at the suction end is 0.01MPa. After the compressor is turned off, if the pressure does not rise, it means the refrigerant After the recovery is completed, if the pressure has risen, it means that the refrigerant has not been recovered, and the operation should be performed again according to the above method.