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Series 655
MAINTENANCE
979645EA
Edition 23.09.2019
91/112
7.2.2
Replacement of actuator and actuator shaft seal
7.2.2.1
Required tools
•
Allen Wrench 5 mm
•
Open end wrench 17
mm
•
O-ring removal tool
(see chapter:
Accessories)
•
Vacuum grease see
chapter: Spare Parts)
•
Maintenance-Tool (813330)
•
Protection cover (833841)
•
Clean room wiper
•
Isopropyl alcohol
•
Clean room gloves
Description
Required tool
1. Vent both valve
chambers
2. Refer to chapter: «Local
operation» and follow
the instruction for
CPA 4.0
3. With CPA 4.0 move the
gate to 10% open
position
4. Disable the PFO in
menu: Valve >
Parameters > Power Fail
Option > [False] and
press [Enter] on
keyboard
5. Do power OFF for the
valve
6. Disconnect the power
cable from valve
controller