Samsung AQA07C5(6)ME Service Manual page 16

3-2-2(f) Air-Purge Procedure
1. Connect each assembly pipe to the appropriate valve on the
outdoor unit and tighten the flare nut.
2. Connect the charging hose of low pressure side of manifold
gauge to the packed valve having a service port (3/8"
Packed valve) as shown at the figure.
3. Open the valve of the low pressure side of manifold gauge
counter-clockwise.
4. Purge the air from the system using vacuum pump for about
30 minutes.
- After that, please recheck that pressure is stabilization.
- Close the valve of the low pressure side of manifold gauge
clockwise.
- Remove the hose of the low pressure side of manifold
gauge.
5. Set valve cork of both liquid side and gas side of packed
valve to the open position.
6. Mount the valve stem nuts to the 2-way and 3-way valve.
And mount the service port cap to 3-way valve.
7. Check for gas leakage.
- At this time, especially check for gas leakage from the
3-way valve's stem nuts, and from the service port cap.
Samsung Electronics
Operating Instructions and Installation
Outdoor unit
A
B
Valve stem
B
(liquid)
A
(gas)
Indoor unit
Gas pipe side C
Liquid pipe side
D
Vacuum Pump
Stem cap
3-9