Samsung AS180UE, Service Manual

Page: 17 / 55

Operating Instructions and Installation
3-11
Samsung Electronics
3-2-2(h) Air-Purge Procedure
1. Connect each assembly pipe to the appropriate valve on the
outdoor unit and tighten the flare nut.
3 Open the valve of the low pressure side of manifold gauge
counter-clockwise.
6. Mount the valve stem nuts to the 2-way and 3-way valve.
And mount the service port cap to 3-way valve.
4. Purge the air from the system using vacuum pump for about
10 minutes.
- Close the valve of the low pressure side of manifold gauge
clockwise.
- Remove the hose of the low pressure side of manifold
gauge.
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.
5. Set valve cork of both liquid side and gas side of packed
valve to the open position.
2 Connect the charging hose of low pressure side of manifold
gauge to the packed valve having a service port (3/8” or
1/2” Packed valve) as shown at the figure.
Outdoor unit
Indoor unit
Gas pipe side
Liquid pipe side
Vacuum Pump
B
(liquid)
Valve stem
Stem cap
A
(gas)