VAA · Edition 05.22
EN-8
8 RePLACInG tHe DAMPInG UnIt
slow opening/quick closing
1
Disconnect the system from the electrical power
supply.
2
Shut off the air supply.
➔
Loosen the M3 setscrews (1.5 mm hexagon sock-
et), but do not unscrew completely.
3
M3
4
5
6
M3
7
Set the start gas rate, see page 5 (6.2 Setting
the start rate on the VAA../L).
slow opening/slow closing
1
Shut off the air supply.
➔
The solenoid actuator remains switched on.
➔
Loosen the M3 setscrews (1.5 mm hexagon sock-
et), but do not unscrew completely.
2
M3
3
4
5
Switch off the solenoid actuator. Otherwise, the
solenoid actuator will heat up unnecessarily.
6
M5
7
1.
2.
8
9
10
11
2.
1.
12
M5
M5
13
Switch on the solenoid actuator so that the guide
pin becomes visible.
14
15
Switch off the solenoid actuator. The damping unit
is lowered.
16
17
M3
18
Open the air supply and switch on the power sup-
ply.
9 RePLACInG tHe CIRCUIt BoARD
WARnInG
Risk of injury!
Please observe the following to ensure that no
damage occurs:
– Electric shocks can be fatal! Before working on
possible live components, ensure the unit is
disconnected from the power supply.
– The solenoid actuator heats up during
operation. Surface temperature approx. 85°C
(approx. 185°F).
➔
We recommend making a note of the contact as-
signment for subsequent rewiring.
➔
1 = N (–), 2 = LV1 (+)
9.1 VAA 1–3
1
Disconnect the system from the electrical power
supply.
2
Close the gas supply.
3
4
(+)
LV1
N
(-)
➔
If a position switch is wired, disconnect it.
5
➔
Keep all components for subsequent assembly
in a safe place.