5.1 Opening isolating terminal 81
(Type 3274)
1.
Switch off the voltage supply!
2. Remove both screws and the housing
cover on the side.
3. Position the screwdriver at isolating ter-
minal 81 below the white release button.
Lever up the button until it locks. The red
marker pin is retracted.
Remount the cover and switch on the
voltage supply.
The controller signal is now discon-
nected, allowing the valve to be moved
to the desired position by pressing the
On
or
Off
key; the valve remains in the
adjusted position.
To re-establish the priority of the controller
signal, proceed as follows:
4
Switch off the voltage supply and remove
the cover.
4
Firmly press the release button until it
locks, so that the red marker pin be-
comes visible.
4
Remount the cover and switch on the
voltage supply.
12
EB 5868-1 EN
Operation – manual override
81
Fig. 4 · Isolating terminal (81) and key for manual override
Closing the isolating terminal
Key retracts
Key extends
Release button
Marker pin
Isolating terminal
Opening the isolating terminal
Red
marker pin
Summary of Contents for 3214
Page 15: ...EB 5868 1 EN 15...
