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3. Based on a closed restriction (screw/ad-
juster turned clockwise as far it will go),
adjust the flow set point by turning the
screw or adjuster counterclockwise.
Check the flow rate and correct it, if nec-
essary.
4. Guide the wire through the lead-seal
hole and lead-seal it to fix the adjusted
flow rate.
6.4.3
Adjustment with electric
actuator
NOTICE
!
The electric actuators are designed for use in
low voltage installations. For wiring and
maintenance, you are required to observe
the relevant safety regulations. Only use
power interruption devices that are protected
against unintentional reconnection of the
supply voltage. Do not remove any covers to
perform adjustment work on live parts.
EB 3135-1 EN
6.4.4
Adjusting actuators
without fail-safe action
WARNING
!
Observe the relevant safety regulations on
mounting or removing the electric actuator.
1. Extend the actuator stem (10.1) by turn-
ing the handwheel counterclockwise or
by applying a corresponding control sig-
nal from the control device.
2. Use a suitable tool (Allen key, SW 4) to
turn the adjustment screw (8.3) or the set
point adjuster (8.2) clockwise () as far
as it will go to retract the stem of the
electric actuator.
3. Refer to Fig. 6 or Fig. 7 to find out how
many turns are required to set the flow
rate.
4. Use a suitable tool (Allen key, SW 4) to
turn the adjustment screw (8.3) or the set
point adjuster (8.2) by the required num-
ber of turns.
Turn it counterclockwise () to open the
restriction. The flow rate rises.
5. Guide the wire through the lead-seal
hole and lead-seal it to fix the adjusted
flow rate.
Start-up and operation
33
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