GB-7
D
GB
F
NL
I
E
VAS without damping
1
Disconnect the system from the electrical power
supply.
Shut off the gas supply.
▷
Remove the M20 cable gland or other type of
connection.
4
3
5
9
7
8
6
▷
Depending on the construction stage of the unit,
there are two different methods for replacing
the actuator:
If the unit concerned has no O-ring in this place
(arrow), replace the actuator as described here.
Otherwise, go to the next note.
VAS 2–3
VAS 1
10
10
11
Slide seal
under the
second
groove.
Insert seals.
Position of the
metal ring can
be selected.
▷
If the unit concerned has an O-ring in this place
(arrow), replace the actuator as described here:
▷
VAS 1: use all seals from the actuator adapter set.
VAS 2/3: use the small seal from the actuator
adapter set and only one of the large seals.
VAS 1–3
10
11
Slide seal
under the
second
groove.
1
Position new actuator.
1
Follow the reverse procedure when reassem-
bling.
14
Fit the M20 cable gland or plug and socket.
15
Connect the VAS to the electrical power supply,
VAS../L with damping unit
1
Disconnect the system from the electrical power
supply.
Shut off the gas supply.
▷
Loosen the setscrews, but do not unscrew com-
pletely (M3 = 1.5 mm hexagon socket, M5 =
2.5 mm hexagon socket).
M3
M5
4
5
3
7
8
6
9
For further disassembly and replacing the actua-
tor, see section on replacing the actuator.
▷
Once the new actuator has been wired, the
damping unit can be fitted as described below
and set to the desired start gas rate.
N
2
<– 1,5 x p
u max
M3
11
12
10
14
13
18
17
Screw in
the M3
setscrews.
15
Open the gas solenoid valve and the gas supply.