Samsung AQ24A1QE Service Manual page 20

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)
Leaking
not
leaking
If leaking, tighten the flare nut one more time.
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
Valve stem
Indoor Unit
Liquid pipe side
2-way valve
Outdoor Unit
Samsung Electronics
Valve stem
Stopper
Gas pipe side
3-way valve