Samsung ASH180UE, Service Manual

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3-10
Samsung Electronics
Operating Instructions and Installation
3-2-2(h) Air-Purge Procedure
• Use the coolant 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).
3. Check leakage of coolant not leaking.
Leaking
• Tighten pipe fixing area one more time
and go to ®Í if gas is not leaking.
• If gas continues to leak although the
pipe fixing area has been tightened
again, repair the leaking area,
discharge the coolant completely and
refill with the required amount of new
coolant.
not
leaking
4. Open the 2-way valve again.
7. Close the cap of each valve.
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.
8. Check each valve for leakage.
6. Open the 2-way valve and 3-way valve
completely
2. Turn the 2-way valve cock approx. 45°
∆
counterclockwise to open it.
Close it about 10 seconds later.
2-way valve
3-way valve
Flare nut
Stopper
Valve body
valve stem
Valve stem cap
A B
C
D
Indoor unit
Outdoor unit
Half union
Gas pipe side Liquid pipe side
3way valve 2way valve
Model Liquid pipe side Gas pipe side
ASH180UE
160(ø6.35) 500(ø12.7)
ASH181UE
ASH-1808DR
160(ø6.35) 500(ø12.7)
ASH-2417ER 160(ø6.35) 700(ø15.8)
•Valve cap tightening torque kg . cm