Installation, Operating & Maintenance Instructions

Series 64, DN 63-400 (I.D. 21/2" - 16")

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

219034EM

2013-08-27

16/19

6. Replacement of actuator

Close and lock valve

Remove the position indicator box (8) from the actuator and unscrew the 2 hexagon bolts of the actuator

Pull off actuator from the gear wheel of the feedthrough assembly (9). Take hold of the actuator on both sides of

the actuator flange and use your thumb to push against the shaft of the feedthrough

Make sure that rack of the actuator is in closed position

Check whether valve is closed and properly locked

Set up actuator on gear wheel and shaft in a right angle to the valve. If the actuator cannot engage with the gear

wheel, turn actuator under little pressure a few degrees counter-clockwise until it engages with the gear wheel

For change into position A2 or B2, first unscrew the 2 hexagonal bolts of the feedthrough assembly and put them

into the bolt holes in the lateral axis

Turn the actuator slightly back to the right angle position so that the 2 bolts can fit loosely in the threaded holes

Fasten the 2 bolts only when flange area of the actuator lies tightly on the actuator flange of the valve

Set position indicator box (8) on actuator

Align position indicator so that the 4 cylinder head screws will fit loosely in the threaded holes. Fasten screws

Verify the correct adjustment of the position indicator. In the position where the microswitch has switched, the valve

must be closed and locked

7. Replacement of feedthrough O-ring (11)

Remove gate assembly (4) as per items 1 and 2

Remove actuator as per item 6

Push the roll pin (12) out of the feedthrough shaft. Use VAT feedthrough assembling tool or a punch. Remove lever

(17).

Loosen the 2 screws of the feedthrough assembly (9)

Slide out complete feedthrough assembly (9), carefully dismantle feed through assembly and remove the

feedthrough O-ring (11)