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