2.Turn on the high and low pressure valves
As shown below, turn on the high and low pressure valves is to tighten the valves
clockwise based on the direction of the arrow (the arrow marked “open” on the valve)
on the high and low pressure valves.
Rotate the air conditioning quick couplings clockwise
Sketch map of turning on the air conditioning quick couplings
Preparation Before Use
1. Ensure the two electronic scale protection screws are removed (as shown below).