Installation, Operating & Maintenance Instructions
Series 650 DN 100-250 (I.D. 4“ - 10”), RS485
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel ++41 81 771 61 61 Fax ++41 81 771 48 30 Email
www.vatvalve.com
271149EA
2007-06-12
62/77
Note: Electrical power and compressed air is required to perform steps 2 to 9 during disassembly respectively 9 to 2
during assembly.
D e s c r i p t i o n
Required tool
1. Vent both valve chambers.
2. Open the 4 bonnet screws and
remove valve bonnet.
Allen wrench
5mm
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.
mounting
screw
for
pendulum
plate
open end wrench
13mm
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.
maintenance
button
unlock
lock
