22
Refrigerant piping
Use of the stop valve
1 Remove the cover of the stop valve.
2 Insert the hexagonal wrench in the shut-o valve and
turn the shut-o valve anti-clockwise.
3 Stop rotation when the stop valve cannot be turned
any further.
4 The valve is now open.
1
2
3
4
Fig. 30
.
a
CAUTION
Insucient torque can cause the leaking of
refrigerant.
Size of the
stop valve
(mm)
Tightening torque/N.m. (Turn
clockwise to close)
Axis
Valve body
Ø12.7
9 ~ 30
Ø19.1
12 ~ 30
Ø22.2
16 ~ 30
Ø25.4
24 ~ 30
Ø28.6
Ø31.8
25 ~ 35
Ø35.0
Closing of the stop valve
1 Remove the cover of the stop valve.
2 Insert the hexagonal wrench in the shut-o valve and
turn the shut-o valve clockwise.
3 Stop rotation when the stop valve cannot be turned
any further.
4 The valve is now closed.
Direction of closing:
Fig. 31