8 If there is a change in system pressure, refer to Gas Leak Check
section for information on how to check for leaks. If there is no
change in system pressure, unscrew the cap from the packed valve
(high pressure valve).
9 Insert hexagonal wrench into the packed valve (high pressure valve)
and open the valve by turning the wrench in a 1/4 counterclockwise
turn. Listen for gas to exit the system, then close the valve after
5 seconds.
10 Watch the Pressure Gauge for one minute to make sure that there is
no change in pressure. The Pressure Gauge should read slightly
higher than atmospheric pressure.
Figure 7-2
11 Remove the charge hose from the service port.
12 Using hexagonal wrench, fully open both the high pressure and low
pressure valves.
13 Tighten valve caps on all three valves (service port, high pressure,
low pressure) by hand. You may tighten it further using a torque
wrench if needed.
When opening valve stems, turn the hexagonal wrench until it hits against
the stopper. Do not try to force the valve to open further.
The standard pipe length varies according to local regulations.The
standard pipe length is 5m (16'). The additional refrigerant to be charged
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