GB-3
Disconnect the system from the electrical power
supply.
Shut off the gas supply.
▷
The solenoid actuator can be rotated to allow
the socket for the electrical connection to be
repositioned. To do so, loosen both screws, but
do not unscrew completely.
▷
Once the solenoid actuator is in the desired posi-
tion, re-tighten the screws.
ATTENTION
Attention! Gas-filled space has been opened. Ple-
ase observe the following to ensure that no damage
occurs:
– Check for tightness, see page 3 (Tightness
test)
1 = N (–), 2 = LV1
V1
(+)
2
1
3 4
5
7
6
8 Follow the reverse procedure when reassem-
bling.
Tightness test
CAUTION
Please observe the following to ensure that the VG
is not damaged during the tightness test:
– Check max. inlet pressure– see type label.
– Test pressure ≤1.5x max. inlet pressure.
Close the solenoid valve.
Shut off the gas supply.
To be able to check the tightness, shut off the
downstream pipeline as close as possible to the
valve.
ATTENTION
If the actuator of the VG is rotated, the tightness can
no longer be guaranteed. To ensure that there are
no leaks, check the actuator of the VG for tightness.
0
0
N
2
≤ 1,5 x p
u max
0
0
0
0
4
6
8
N
2
≤ 1,5 x p
u max
N
2
≤ 1,5 x p
u max
10
N
2
ca. 6 mbar
N
2
≤ 1,5 x p
u max
Checking for external tightness
0
N
2
≤ 1,5 x p
u max
N
2
≤ 1,5 x p
u max
10
N
2
ca. 6 mbar
N
2
≤ 1,5 x p
u max
5 Open the solenoid valve.
N
2
≤ 1,5 x p
u max
6
8
N
2
≤ 1,5 x p
u max
N
2
≤ 1,5 x p
u max
10
N
2
ca. 6 mbar
N
2
≤ 1,5 x p
u max
▷ Pipeline leaking: check the seal.
Checking for internal tightness
7 Close the solenoid valve.
0
0
8
N
2
≤ 1,5 x p
u max
N
2
≤ 1,5 x p
u max
10
N
2
ca. 6 mbar
N
2
≤ 1,5 x p
u max
9 After 60 seconds, increase the text pressure to
≤1.5xp
umax.
.
0
0
4
6
8
N
2
≤ 1,5 x p
u max
N
2
≤ 1,5 x p
u max
10
N
2
ca. 6 mbar
▷ Tightness OK: open the pipeline.
▷ Unit leaking: remove the VG and return it to the
manufacturer.
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