Azbil Corporation Actuator
Model VFR - FloWing Eccentric Rotary type Control Valves 3-9
3-7-2 : Setting manual control
First, switch the bypass cock (See Figure 4-9) of the posiitoner to the “ON” position.
If the handwheel lock is released and the handwheel is rotated counterclockwise as
viewed down towards the direction indicator plate, the valve will close if it is a direct
action type or it will open if it is a reverse action type.
For manual control of the ow using the valve, turn the handwheel to the desired
position in the required direction referring to the direction indicator plate and tighten
the handwheel lock to x the valve to that position.
Be sure to set the valve as described in subsection “3-7-1 : Setting automatic
operation” before commencing to operate the valve in automatic mode.
3-7-3 : Setting the limit stopper
The handwheel can be used also as a limit stopper - a stopper for a maximum aperture
when in direct action mode or as a stopper for the minimum aperture when in reverse
action mode.
(1) Release the handwheel lock. Turn the handwheel to the desired position in the
required direction referring to the direction indicator plate.
(2) Tighten the handwheel lock.
For automatic operation without the limit stopping eect, set the handwheel as
described in subsection “3-7-1 : Setting automatic operation”.
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