High and Low Pressure Valves Operating Guideline
During operation, the system will prompt several times to turn on/off the high and low
pressure valves.
Operation Definition:
1.Turn off the high and low pressure valves
As shown below, turn off the high/low pressure valve is to tighten the valves
counterclockwise based on the reverse direction of the arrow (the arrow marked “open”
on the valves) on the high and low pressure valves.
Rotate the air conditioning quick couplings
counterclockwise
Sketch map of turning off the air conditioning quick couplings