Using The Stop Valve - Samsung AJ Series Installation Manual

Extra Procedures

Using the stop valve

Opening the stop valve
1 Open the cap and turn the stop valve anticlockwise by
using a hexagonal wrench.
2 Turn it until the axis is stopped.
Tightening torque
for charging port cap
(Refer to the table)
R-22: Thread of the
screw - 7/16-20UNF
R-410A/R-32: Thread of
the screw - 1/2-20UNF
3 Tighten the cap securely.
Outer Diameter
(mm)
Body cap (N•m)
Ø6.35
Ø9.52
Ø12.70
Ø15.88
(1 N•m=10 kgf•cm)
NOTE
• 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.
38
English
Charging core
Tightening torque
for body cap
(Refer to the table)
Spindle
Tightening torque
Charging port cap
(N•m)
20 to 25
20 to 25
10 to 12
25 to 30
30 to 35
Closing the stop valve
1 Remove the cap.
2 Turn the stop valve clockwise by using a hexagonal
wrench.
3 Tighten the axis until the valve reached the sealing
point.
4 Tighten the cap securely.
CAUTION
• 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.