50
!
Please note
Commissioning is weather-dependent. At out-
side temperatures below 0 °C, moisture can
condense and sublimate in the refrigerant lines.
If water droplets and/or ice particles enter the
compressor, they may cause damage to the
appliance.
In the case of high relative humidity or outside
temperatures below 0 °C, please observe the
following:
■
Use nitrogen 5.0 for the pressure test.
■
During evacuation, take suitable steps to keep
the surface temperature of the refrigerant lines
above
0 °C.
Danger
Direct contact with refrigerant can be harmful to
skin.
Wear safety goggles and protective gloves when
working on the refrigerant circuit.
!
Please note
Escaping refrigerant will cause environmental
pollution.
■
Before evacuating the refrigerant lines and the
internal unit, check all connections for tight-
ness with leak detection spray.
■
Keep the valves on the external unit shut, and
fill the system with nitrogen through the serv-
ice valve. The test pressure is the max. per-
missible operating pressure.
A
P
C
K
L
M
Q
H
F
D
E
G
N
B
E
Fig. 48
Example type AWT/AWT-AC 241.A07
A
Internal unit
B
Hot gas line
C
External unit
D
Service valve (Schrader valve)
In type AWT/AWT-AC 241.A07 the service valve is
located at the connection of the liquid line.
E
Fill valve
F
Shut-off valve
Commissioning, inspection, maintenance
Evacuating the refrigerant lines and internal unit
5700 582 GB
