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A
B
C Service port
D
E Local pipe
(1) 1
(2) 1
F Sealed, same way for gas side
G Pipe cover
H Do not use a wrench here.
Refrigerant leakage may result.
I
2
2
only. The stop valve shape, service port
position, etc., may vary according to the
model.
* Turn section A only.
(Do not further tighten sections A and
B together.)
C Charge hose
D Service port
(1) Connect the testing tools.
A B are closed and do not open them.
stop valve A and the gas stop valve B.
1
pressure does not decrease.
2
pressure does not decrease.
3
perature and refrigerant pressure.
have passed the test and there are no leaks.
2
G). Make the necessary corrections.
(4) If the pressure decreases in steps (2) or (3), there is a gas leak. Look for the source
of the gas leak.
(1) Gas side (Fig. 4-9)
1
wise direction to open.
2 Make sure that the stop valve is open completely, push in the handle and rotate
the cap back to its original position.
(2) Liquid side (Fig. 4-10)
1 Remove the cap and turn the valve rod counterclockwise as far as it will go with
the use of a 4 mm hexagonal wrench. Stop turning when it hits the stopper.
(ø6.35: Approximately 4.5 revolutions) (ø9.52: Approximately 10 revolutions)
2 Make sure that the stop valve is open completely, push in the handle and rotate
the cap back to its original position.
A Valve
B
C Handle
D Cap
E Local pipe side
Refrigerant pipes are protectively wrapped
necting the pipes. Cut out the knockout in the pipe cover following the groove and
wrap the pipes.
Pipe inlet gap
(If the gaps are not closed, noise may be emitted or water and dust will enter the
unit and breakdown may result.)
Do not tighten the service port too much when installing it, otherwise, the valve core
could be deformed and become loose, causing a gas leak.
After positioning section B in the desired direction, turn section A only and tighten it.
Do not further tighten sections A and B together after tightening section A.
C of the liquid
2
2
2
G) and measure the surrounding tem-
F Open position side
G Service port
H Wrench hole
I
-
-
11
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