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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
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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
.
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(1) Connect the testing tools.
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A
B
are closed and do not open them.
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C
of the liquid
stop valve
A
and the gas stop valve
B
.
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1
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2
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pressure does not decrease.
2
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2
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pressure does not decrease.
3
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2
G) and measure the surrounding tem-
perature and refrigerant pressure.
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have passed the test and there are no leaks.
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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.
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(1) Gas side (Fig. 4-9)
1
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-
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
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C
Handle
D
Cap
E
Local pipe side
A
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B
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C
Service port
D
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E
Local pipe
F
Open position side
G
Service port
H
Wrench hole
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Refrigerant pipes are protectively wrapped
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-
necting the pipes. Cut out the knockout in the pipe cover following the groove and
wrap the pipes.
Pipe inlet gap
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(If the gaps are not closed, noise may be emitted or water and dust will enter the
unit and breakdown may result.)
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(1)
1
2
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(2)
1
2
F
Sealed, same way for gas side
G
Pipe cover
H
Do not use a wrench here.
Refrigerant leakage may result.
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