VAT 653 Series - Replacement of actuator shaft seals

Series 65 MAINTENANCE
963283EA Edition 2019-05-03 109/
129
7.2.2 Replacement of actuator shaft seals
7.2.2.1 Required tools
• Allen Wrench 2mm
• Allen Wrench 4mm
• Allen Wrench 5mm
• O-ring removal tool
(see chapter Accessories)
• Vacuum grease (see chapter spare parts)
• Open end wrench 13mm
• Clean room wiper
• Isopropyl alcohol
• Service cable USB Type A to B
(PC to valve Service connector)
Description
Required tool
Electrical power and compressed air is required to perform steps 1 to 11 during
disassembly respectively 11 to 1 during assembly.
1. Set the valve to local mode
2. Activate “Maintenance” (reduced
speed)
Now us the position buttons to move the
valve plate. The valve will now move in a
very low speed
Alternatively, the remote interface can be
used:
Set “Control Mode” to ‘Maintenance’
Now use “Target Position” to move the
valve
CPA & Service cable
(PC to valve Service
connector)
3. Vent both valve chambers.
4. Open the 4 bonnet screws and
remove valve bonnet.
Allen wrench
5mm