GB-4
D
GB
F
NL
I
E
Mounting IC 0
4
3
2
Installing the VFC with flanges in the pipe
> 20 mm
5
6
4
2
3
1
Installing the VFC without flanges in the pipe
> 20 mm
4
5
6
7
9
8
2
3
1
Wiring
Electrical connection of the IC, see enclosed Actua-
tor IC 20/IC 30/IC 40 operating instructions or go to
www.docuthek.com.
Tightness test
▷
Shut off the gas supply.
Close off the outlet of the VFC with a blanking
plate or close the solenoid valve for gas down-
stream of the VFC.
The VFC is in the closed position once the IC has
been installed:
Set the IC 20, IC 30 in Manual mode, or the
IC 40 using BCSoft, to 100% open position, see
enclosed Actuator IC 20/IC 30/IC 40 operating
instructions or go to www.docuthek.com.
N
2
1,5 x p
u max
3
4
Tightness OK: remove the blanking plate or open
the solenoid valve for gas downstream of the
VFC.
5
Once the tightness test has been carried out
successfully, move the VFC to the closed posi-
tion once more using the actuator IC.
▷
Pipeline leaking: replace O-ring on flange, see
page 5 (Seal set for sizes 1 and 3). Then
check for tightness once again.
▷
Unit leaking: remove the unit and return it to the
manufacturer.
Setting the flow rate
CAUTION
When setting a higher flow rate, do not turn the
adjusting spindle further than the stop (= maximum
flow rate). It must not be unscrewed completely.
The VFC is set to the maximum flow rate at the
factory.
▷
Check the VFC for tightness after each adjust-
ment of the adjusting spindle, see page 4
(Tightness test).
▷
The flow rate can be adjusted using the adjusting
spindle (2.5 Allen key) in the base plate:
turning it clockwise will reduce the flow rate,
turning it anti-clockwise will increase the flow
rate.
–
+
▷
The VFC is controlled by the IC, see enclosed
Actuator IC 20/IC 30/IC 40 operating instructions
or go to www.docuthek.com.
