VAT 650 Series Installation, Operating, & Maintenance Instructions page 78

Note: Electrical power and compressed air is required to perform steps 2 to 9 during disassembly respectively 9 to 2
during assembly.
1. Vent both valve chambers.
2. Open the 4 bonnet screws and
remove valve bonnet.
3. Open valve
Caution: Stand away from valve –
pendulum plate moves out of the
valve body.
4. Unfasten mounting screw for
pendulum plate. (For reinstall the
pendulum plate, tighten the
mounting screw to block.)
5. Remove pendulum plate.
6. With one hand press the
MAINTENANCE BUTTON to lower
the sealing ring, with your second
hand unlock the sealing ring by
pressing the handle.
7. Release MAINTENANCE BUTTON.
8. Remove sealing ring.
9. To prevent the shaft and retaining
pins from moving during work, switch
the valve to safety mode. Refer to
«Safety mode» for details.
Note: Retaining pins will move up.
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel +41 81 771 61 61 Fax +41 81 771 48 30 CH@vatvalve.com www.vatvalve.com
Installation, Operating & Maintenance Instructions
Series 650 DN 100-250 (I.D. 4" - 10"), CC-Link
D e s c r i p t i o n
unlock
mounting screw
for pendulum plate
open end wrench
lock
maintenance button
280672EB
2010-12-15
Required tool
Allen wrench
5mm
13mm
78/94