Refrigerant recovery machine (gas-liquid) recovery mode operation

1 If liquid appears in the compressor at the "2" position, slowly turn the knob to the "start" position;
    At this time, the indicated value of the low pressure meter decreases until the impact stops;
    But don't make the pressure drop to 0, the air inlet will not pump when it drops to 0.
2 If the power is off and restarting or starting is difficult, turn the knob to the "start" position, then turn on the power and press the start button;
3 If you turn the knob to the "1" position, you can perform a stable liquid recovery, but the recovery speed is slow;
4 After the liquid recovery is completed, turn the knob to the "2" position, which can improve the gas recovery speed;
5 Let the equipment run to the required vacuum, you can end the recovery and then start self-cleaning.