Using Stop Valve - Samsung AC052HBMPKH Manual

Using stop valve

AA
To Open the Stop Valve
1. Open the cap and turn the stop valve counterclockwise by using a
hexagonal wrench.
2. Turn it until the axis is stopped.
• 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.
3. Tighten the cap securely.
To Close 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.
• 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.
f Before inspecting the leakage, use a torque wrench to close
the cap for the service valve. (Comply with a tightening
torque for each size of the diameter, and tighten the cap
firmly to prevent any leakage.)
f To check for any possible leakage, inert gas into the
pipes connected to indoor/outdoor units and check the
connection part of the indoor/outdoor units with soap
lather or liquid for leakage test.
Outer diameter
(mm)
Body cap (N•m) Charging port cap (N•m)
Ø6.35
Ø9.52
Ø12.70
Ø15.88
Over Ø19.05
※ 1 N•m = 10 kgf•cm
24
Tightening torque
20~25
20~25
25~30 10~12
30~35
35~40
Service port
Tightening torque for body cap
(Refer to the table)
Charging core
R-22 : Diameter of the screw - 7/16-20UNF
R-410A : Diameter of the screw - 1/2-20UNF
Tightening torque for charging port cap
(Refer to the table)
Cap
Axis
Sealing point
Spindle