MovinCool Office Pro W20 Service Manual - Manual (Page 73)

Repair Section
73
(5) Evacuation (repeat)
1) Close the valve of the refrigerant cylinder. Then
remove the charging hose (green) from the
refrigerant cylinder, and connect it to the
refrigerant recovery machine.
< NOTE >
Keep the high pressure valve and the low
pressure valve of the gauge manifold closed.
2) Using procedure in the “Evacuation”, evacuate
the system until the low pressure gauge indicates
30 inHg (100 kPa) or larger. (For 15 minutes or
more.)
3) After evacuation is complete, close the high and
the low pressure valves of the gauge manifold.
CAUTION
Make sure to evacuate the system twice or
more using the repetitive vacuum method.
Evacuate the system an additional time on
rainy or humid days.
I002227
LO
Closed
HI
Open
LO
Closed
HI
Closed
Valve Setting
30 inHg (100 kPa) or larger
High Pressure Valve
High Pressure Gauge
Gauge
High Pressure
Side Tube
Vacuum Pump
(in Operation)
Low Pressure
Valve