Adjustment To„Normally Closed; Stroke Indicator - Resol VA20 Manual

VA20
2.2 Adjustment to„normally closed"
1.
2b.

3. Stroke indicator

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1. Remove the transparent indicator cover from the housing
and remove the indicator.
2. Press down the manual adjustment device by means of
a flat headed screw driver and turn the screw driver by
60° to the right. The manual adjustment device is then in
the position shown in figure 2.b.
3. Insert the blocking disc into the lower part. Insert indica-
tor and then transparent cover.
2a.
3.
The stroke indicator behind the transparanet cover at the
front of the actuator indicates how far the valve is opened.
It is used as a function control of the actuator.
When the indicator is in the „open" position after the operating
voltage has been applied to the valve for approx. 3 minutes, the
unit operates without any fault. When the unit is disconnec-
ted from the power supply, it must return to the „closed"
position within approx. 3 minutes.
„Closed" position
The indicator is visibe at the lower edge of the window: the
electrothermal actuator keeps the valve closed.
„Open" position
The indicator is visibe at the upper edge of the window: the
electrothermal actuator keeps the valve open.
EN