GB-11
D
GB
F
NL
I
E
16
Check for tightness, see accessories, checking
the bypass/pilot gas valve for tightness.
Checking the bypass/pilot gas valve for
tightness
1
To be able to check the tightness, shut off the
downstream pipeline as close as possible to the
valve.
Close the main valve.
Close the bypass/pilot gas valve.
CAUTION
If the actuator of the VBY is rotated, the tightness
can no longer be guaranteed. To ensure that there
are no leaks, check the actuator of the VBY for
tightness.
N
2
≤
1,5 x p
u max
Check the bypass/pilot gas valve for tightness at
the inlet and outlet.
N
2
≤
1,5 x p
u max
0
N
2
≤
1,5 x p
u max
N
2
≤
1,5 x p
u max
5
4
6
6
Open the
bypass or
pilot gas
valve.
Bypass valve
N
2
≤
1,5 x p
u max
0
N
2
≤
1,5 x p
u max
N
2
≤
1,5 x p
u max
5
4
6
6
Open the
bypass or
pilot gas
valve.
Pilot gas valve
N
2
≤
1,5 x p
u max
0
N
2
≤
1,5 x p
u max
N
2
≤
1,5 x p
u max
5
4
6
6
Bypass- oder
Zündgasventil
öffnen.
Откройте
байпасный
или газовый
клапан
запальной
горелки.
Open the
bypass or
pilot gas
valve.
Ouvrir la
vanne de
by-pass ou la
vanne pilote.
Bypass-klep
of aansteek-
gasklep
openen.
Aprire la
valvola di
bypass o la
valvola del
gas pilota.
Abrir la
válvula de
bypass o la
válvula de
gas de
encendido.
Åbn by-
pass-/tænd-
gasventilen.
Abrir a válvula
de bypass ou
de gás piloto.
Ανοίξτε τη
βαλβίδα
παράκαμψης
ή τη βαλβίδα
αερίου
ανάφλεξης.
Öppna
bypass- eller
tändgasven-
tilen.
Åpne bypass-
eller tenn-
gassventilen.
Otevřít obto-
kový ventil
nebo
zapalovací
plynový ventil.
Otworzyć zawór
obejściowy lub
zawór gazu
zapłonowego.
Tightness control TC 1V
1
Disconnect the system from the electrical power
supply.
Shut off the gas supply.
▷
The solenoid actuator cannot be rotated on so-
lenoid valves with proof of closure switch VCx..S
or VCx..G.
▷
Connect the TC to the inlet pressure connec-
tion p
u
and the interspace pressure connec-
tion p
z
of the inlet valve. Ensure that connections
p
u
and p
z
on the TC and the gas solenoid valve
are not reversed.
▷
TC and bypass/pilot gas valve cannot be fitted
together on the same side of the double block
valve.
▷
In the case of a VCx combination, it is recom-
mended to always install the bypass/pilot gas
valve on the rear of the second valve and the
tightness control on the viewing side of the first
valve, together with the connection box.
▷
When using a valve/pressure regulator combi-
nation VCG/VCV/VCH, the pressure regulator
must be activated with air during the entire test
period t
P
.
▷
The TC is secured using two captive combination
Torx screws T20 (M4) inside the housing. Do not
undo any other screws!
Torx T20
max. 250 Ncm
6
7
8
4
3
5
p
u
p
z
▷
For more information on wiring, testing the
tightness and commissioning, see enclosed
“Tightness control TC 1, TC 2, TC 3” operating
instructions.