Operating And Display Elements; Emergency Manual Override; Optical Position Indicator - Burkert 0250 Manuel D'utilisation

operatInG and dIsplay elements

emergency manual override

With the emergency manual override, you can adjust the valve regardless of the
position of the drive.
press the button in (see illustration) to separate the drive from the valve.
turn the emergency manual override into the desired position while holding the
button in.
if the drive is driven over the complete rotary range, the emergency manual override
latches in again in the neutral position.
note

optical position indicator

the optical position indicator results from the position of the emergency manual
override.
turn the emergency manual override the the right: outlet port a closes and outlet port
B opens at the same time.
turn the emergency manual override to the left, outlet port B closes and outlet port a
opens.
the transition is flowing.
the position query generally takes place on the basis of the drive
position, and not on the position of the valve.
carrier - firmly con-
nected to the drive
Button, separates the
drive from the valve
when pressed in
emergency manual
override, adjustable,
connected to the
rotatable valve
0250 - 17