26
Extra Procedures
English
Extra procedures
• Use the scale to check the change in the container
weight. When the desired amount of refrigerant has
been inserted into the container, lock the valves and
remove the manifold gauge.
Outdoor unit
Service valveManifold gauge
Refrigerant
container
valve
Liquid
side
Valve幪
Valve幩
Scale
Gas side
R-410A
B (liquid) A (Gas)
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-410A: Thread of the screw - 1/2-20UNF
Spindle
Charging Core
Tightening torque for body cap
(Refer to the table)
3 Tighten the cap securely.
Outer Diameter
[inch(mm)]
Tightening torque
Body cap [lbf·ft(N·m)]
Charging port cap
[lbf·ft(N·m)]
Ø 1/4"(6.35) 14.75 ~ 18.44 (20~25)
7.38 ~ 8.85 (10~12)
Ø 3/8"(9.52) 14.75 ~ 18.44 (20~25)
Ø 1/2"(12.70) 18.44 ~ 22.13 (25~30)
Ø 5/8"(15.88) 22.13 ~ 25.81 (30~35)
Over Ø 3/4"(19.05) 25.81 ~ 29.50 (35~40)
NOTE
• Do not apply excessive force to the stop valve and
always use proper tools.
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.
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