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If actuator was replaced,
proceed with step 32, otherwise go to
step 34.
30. Close valve and check if pendulum
plate is in center of flange. Check
can be done either visual or by
measurement.
When the valve is mounted to a
tool, the bonnet has to be removed
and the center position can be
measured by a depth gauge (see
picture).
If the centering (or distance D) is
not correct, proceed with step 31.
31. If necessary adjust pendulum plate:
a.
Move pendulum plate to position
200/1000
b.
Turn the adjustment screw at
flange side of actuator step by step
clockwise. Start turning by less
than 10 degree. Turning clockwise
adjusts the pendulum plate towards
open.
c.
Restart valve in menu
'System/Recovery'
d.
Check pendulum plate position
according step 37 and redo
adjustment procedure if necessary.
32. Clean the valve sealing surface
33. Clean the valve bonnet o-ring
34. Mount valve bonnet.
• Tightening torques for bonnet
screws, see in table to the right.
82/99
MAINTENANCE
Description
Adjusting screw mounted either in actuator
position «B1 standard» or «B2 option»
Max. torque vtd33 Nm
Edition 2014-07-10
Series 651
Required tool
Distance D[mm]
between bonnet flange
DN
surface and pendulum
plate.
160
45.0 ±0.5
200
40.0 ±0.5
250
50.0 ±0.5
Allen wrench 3 mm
•
Clean room wiper
•
Isopropyl alcohol
Clean room wiper
Allen wrench 5 mm
605451EC
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