68
L
Connection hose between pressure
gauge set and vacuum pump
M
Vacuum pump
N
Connection hose between pressure
gauge set and vacuum gauge
P
Valve for vacuum gauge
Q
Vacuum gauge
!
Please note
Prevent damage to the vacuum
gauge.
Never subject the vacuum gauge
to positive pressure.
1.
Close all valves at the pressure
gauge set.
2.
Make all connections, as shown
above.
!
Please note
Fill valve
E
must
remain
closed.
Ensure that fill hose
H
and
shut-off valve
F
are
last
to
be connected to service valve
D
.
Shut-off valve
F
must
be
open.
For
all
connections, counter-
hold with a second open-
ended spanner.
3.
Start the vacuum pump.
At the pressure gauge set, open the
valve to the vacuum pump and the
valve to the hot gas connection.
4.
After approx. 5 min, open the valve to
the vacuum gauge.
Leave the vacuum pump running until
the indication on the vacuum gauge
is almost at "0" (at least 30 min).
Note
The vacuum pump runtime will
depend on the ambient conditions.
5.
On the pressure gauge set, close the
valve to the vacuum pump.
Stop the vacuum pump and wait
approx. 5 min. If the indication on the
vacuum gauge rises, there is a leak.
Remove the leak and repeat the proc-
ess.
6.
Close all valves at the pressure
gauge set.
7.
Remove the vacuum pump and vac-
uum gauge.
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5546 699 GB
Содержание AWT-AC 241.A04
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