Philips Comfort-Cire AMC 45 User's Manual | Page 10

Philips Air Conditioners User's Manual - Comfort-Cire AMC 45.
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AIR PURGING

This procedure is used to remove air from inside the piping connecting the indoor and outdoor units, 
as well as the air inside the indoor unit.  If air purging is not carried out, air will beocme mixed into the 
refrigerant cycle, causing the pressure to rise to abnormally high levels, increasing power 
consumption and reducing the capacity of the unit.  Also, moisture in the air can cause insulation 
failure in the compressor motor and deterioration of the refrigerant oil, resulting in a significant 
reduction in the air conditioner life.

The procedure is as follows:

!

Confirm that all piping connections 
have been completed correctly.

!

Connect a gauge manifold and a 
vacuum pump as shown in the 
diagram.

!

Completely open the low-pressure 
valve of the gauge manifold and 
completely close the high-pressure 
valve.

!

Start the vacuum pump and allow it 
to operate until the pressure is at 29” 
of vacuum.  This will take about 15 
minutes or more.

!

With the low-pressure valve 
completely open, switch off the 
vacuum pump.

!

Completely open both the suction 
and liquid service valves.

!

Disconnect the manifold.

!

Tighten the caps on the service 
valves and the flange nut on the 
charging port.

Gauge Manifold

High pressure

valve

Vacuum pump

Wide pipe

service valve

Narrow pipe

service valve

Low pressure

valve

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