Air-Purge Procedure - Samsung ASH-0906ER Service Manual

Operating Instructions and Installation
3-2-2(g) Air-Purge Procedure
� Use the refrigerant of the outdoor unit to purge air inside indoor unit and pipe.
1. Remove the caps from the 2-way valve(B)
and the 3-way valve(A).
2 Turn the 2-way valve cock approx. 45°
counterclockwise to open it. Close it
about 10 seconds later.
3 Check refrigerant leakage of each joint parts
(A, B, C & D in right figure)
Ieaking
Leaking
not
If leaking, tighten the flare nut one more time.
leaking
If continues to leak, although the pipe fixing
area has been tightened again,
repair the leaking area.
4. Open the 2-way valve again.
5. Open the service valve cap of the 3-way
valve and press the needle valve to
discharge gas for 3 seconds and leave it
for about 1 minute.
Repeat the above procedure for 3 times
to purge air.
6. Open the 2-way valve and 3-way valve
completely
7. Close the cap of each valve.
8. Check each valve for leakage.
3-10
Flare nut
Stopper
Valve
body
Valve
Stem
Valve Stem cap
Indoor Unit
D
Liquid pipe side
2-way valve
B
Outdoor Unit
2-Way Valve
3-Way Valve
Half union
C
Gas pipe side
3-way valve
A
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