Samson 5824 Series - Handwheel; Manual Override of Type 5825 Actuator

30 EB 5824-2 EN
Handwheel
7 Handwheel
The handwheel is used to move the actuator
stemmanually(approx.4turnsfor1mm)
when the supply voltage is disconnected.
Direction of action and actuator travel can
be read off the travel indicator scale
(Fig.11).
Direction Actuator stem
Extends
Retracts
Travel
indication scale
Handwheel
(Type5824only)
Fig.11:Handwheel
The positioning of the valve is affected when
the handwheel is operated while the process
is running. As a result, zero point and the
position feedback do not match the calibrat-
ed values. Zero calibration, initialization or
a transit time measurement must be per-
formed again.
7.1 Manual override of
Type5825Actuator
Risk of electric shock from exposed live
parts.
Do not touch live parts on operating the
manual override.
1. Unscrewfrontcoverandplacea4mm
Allen key on the red actuating shaft.
Risk of damage to the actuator by turning it
too far.
Only retract the actuator stem as far as the
nal travel value.
2. TurntheAllenkey:
Î Turn it counterclockwise only for a ver-
sion with fail-safe action "actuator stem
extends".
Î Turn it clockwise only for a version with
fail-safe action "actuator stem retracts".
3. TurntheAllenkeyonlyasfarasthenal
travel value, which is at the point where
the torque-dependent limit switch is acti-
vated (switching off the motor).
Once the magnet has been released, the
spring mechanism pushes the actuator
stem back to the fail-safe position.
4. Remove Allen key and carefully refasten
the front cover.
Note
DANGER
!
NOTICE
!