IV.
Adjustment of stroke limitation
a. Remove the Control Unit or valve position indicator.
b. Remove the adapter (8).
c. Release the nut (10) by a spanner.
Hold up the adjusting screw for this purpose.
d. Set the adjusting screw accordingly.
turn right
:
to increase stroke
turn left
:
to reduce stroke
e. Control the stroke limitation with air to check and to measure
the stroke.
f. Fasten the nut (10). Hold up the adjusting screw for this purpose.
g. Screw-on the adapter (8).
h. Attach the relevant valve position feedback.
V.
Control of stroke limitation
To open a sectional stroke in the valve, observe the
following aspects for the control of the valve:
6.
Service Instructions
6
valve position
step of control
valve from open position to sectional stroke
open
Control actuator (1)
sectional stroke
1.
Leave actuator (1) controlled.
2.
Control pneumatic stroke limitation (2).
3.
Vent actuator (1).
closed
Vent pneumatic stroke limitation (2).
valve from closed position to sectional stroke
closed
Main cylinder (1) and stroke limitation (2)
depressurized.
sectional stroke
Control pneumatic stroke limitation (2).
1
2
UK
Pneumatic Stroke Limitation
for DELTA SW4 / M4
Operating Manual Rev.0