A
External unit
B
Vacuum pump
C
Filling hose for the liquid side (one
hose end with valve)
D
Pressure gauge set
E
Filling hose for the suction side
(one hose end with valve)
F
Service valves for the suction and
liquid side with protective caps
G
Refrigerant lines to the internal
devices
Evacuate the system at the service
valves of the external unit.
1.
Connect the centre hose of pres-
sure gauge set
D
with vacuum
pump
A
.
2.
Connect the ends of the filling hose
without valves with the connections
of the pressure gauge set
D
.
3.
Remove the protective caps from
service valves
F
and connect fill-
ing hoses
C
and
E
.
4.
Start vacuum pump
B
.
The needle of the pressure gauge
must move from 0 mPa towards
0.1 mPa.
Let the pump run for 15 min.
Note
Should the needle not move as
described, that would indicate a
leak.
Remove the leak and repeat the
process.
Further details regarding the individual steps
(cont.)
10
Commissioning, inspection, maintenance
5692
689
GB