Performing Leak Test & Vacuum Drying (cont.)
◆ When you use the service port, always use a charging hose, too.
◆ Check the leakage of refrigerant gas after tightening the cap.
◆ Must use a spanner and wrench when you open/tighten the stop valve.
CC
CC
AA
AA
UU
UU
TT
TT
II
II
OO
OO
NN
NN
Using Stop Valve
Open the cap and turn the stop valve counterclockwise by using a hexagonal
wrench.
Turn it until the axis is stopped.
1
2
Tighten the cap securely.
3
To Open the Stop Valve
◆
Do not apply excessive force to the stop valve and always use
special instruments. Otherwise, the stopping box can be
damaged and the back sheet can leaks.
◆
If the watertight sheet leaks, turn the axis back by half, tighten
the stopping box, then check the leakage again. If there is no
leakage any more, tighten the axis entirely.
NN
NN
oo
oo
tt
tt
ee
ee
Remove the cap.
Turn the stop valve clockwise by using a hexagonal wrench.
1
2
Tighten the cap securely.
4
Tighten the axis until the valve reached the sealing point.
3
To Close the Stop Valve
Cap
Service
port
Axis
Sealing
point
E-18