VAA · Edition 05.22
EN-6
6.3 setting the damping speed on the VAA../L
➔
The opening speed can be influenced by turning
the nozzle screw on the damping unit.
CAUtIon
Attention! To avoid leakage, please observe the
following:
– If the nozzle screw is turned by more than
1 turn, the damping unit will leak and will have
to be replaced.
➔
Turn the nozzle screw a maximum of 1/2 a turn in
the appropriate direction.
-
+
7 RePLACInG tHe ACtUAtoR
➔
The actuator adapter set for the new actuator must
be ordered separately.
VAx 2 – 3,
VCx 2 – 3
VAx 1,
VCx 1
VAx 1, VCx 1: Order No. 74924468,
VAx 2–3, VCx 2–3: Order No. 74924469.
7.1 Removing the actuator
VAA without damping unit
1
Disconnect the system from the electrical power
supply.
2
Close the gas supply.
3
4
5
6
7
8
➔
Remove the M20 cable gland or other type of
connection.
VAA without proof of closure switch
a
b
c
VAA with proof of closure switch
a
b
c
d
e
VAA with damping unit
1
Disconnect the system from the electrical power
supply.
2
Close the gas supply.
➔
Remove the M20 cable gland or other type of
connection.
➔
Loosen the setscrews, but do not unscrew com-
pletely (M3 = 1.5 mm hexagon socket, M5 =
2.5 mm hexagon socket).
3
M3
4
5
M5
6
1.
2.
7
8
9
10
11
7.2 Fitting the new actuator
➔
The seals of the actuator adapter set are covered
with a non-stick coating. No additional grease is
required.
➔
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.
1
2
Insert seals.
3
Position of the metal ring can be selected.