VAT 612 Series Installation, Operating, & Maintenance Instructions page 71

1. Note: Make sure that the valve is in closed position
2. Vent vacuum system, disconnect electrical connections and remove valve
from vacuum system. If you only replace control and actuating unit, the
valve can remain in the system.
Note: Take care not to damage the sealing surface!
Attention!
Do not move the plate by hands when control and actuating unit is installed.
3. Unfasten clamp coupling
4. Unfasten the 2 connection bolts and
separate both parts.
Note: Valve size DN 160 (6") and bigger
require a shortened wrench.
For ordering number refer to «Spare
parts and accessories».
12 mm
5. Unfasten screws and remove plate
from shaft.
6. Unfasten alternately the 2 mounting
screws little by little.
Note: If only one screw is fasten /
unfasten, the mechanical unit will be
damaged. Max. difference should be
less than 1 turn or 0.5 turn of the
screws.
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 612 DN 63-250 (I.D. 2.5" - 10"), CC-Link
Description
Required tool
Depending on
flange screws
Allen Wrench
2mm
Allen Wrench
3mm
Allen Wrench
3mm
Allen Wrench
3mm
289856EA
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2011-07-06