Service Manual
VCIOM-16909-EN Rev. 0
October 2021
12
Section 4: Manual Actuator Operation Under Maintenance
Manual Actuator Operation Under Maintenance
4.1.2
Direction of rotation of handwheel for closing the valve,
Fail-safe direction "CCW"
Figure 5
Rotation of direction for fail-safe direction "CCW"
Fai
l-s
af
e 90° CCW c
oun
te
rc
lock
wis
e r
ot
ati
on
handwheel
direction of
rotation:
Closing
handwheel
direction of
rotation:
Closing
fail-safe close
z14 (z12)
z14 (z12)
fail-safe open
