Installation, Operating & Maintenance Instructions
Series 244, DN 10 - 50 (I.D.
⅝" - 2")
Series 245, DN 16 - 50 (I.D. 1" - 2")
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
258343EE
2013-09-16
10/14
5.1 Replacement of vacuum seals
The item numbers in brackets refer to the drawing on page 12
5.1.1 Dismount "actuator/gate assembly"
Remove 4 screws (60) uniformly and crosswise
Attention:
Loaded spring!
Withdraw "actuator/gate assembly" carefully from body (pneumatic actuator)
Remove bonnet seal (O-ring, 62) from groove
5.1.2 Replacement of plate seal
Dismount "actuator/gate assembly" (see 5.1.1)
Pick O-ring (61) with a needle and pull it out of groove
Attention:
Do not damage the sealing surface!
Check sealing surface and clean it with alcohol
Put new O-ring (61) on plate groove and press it crosswise into groove at 4 points
Press O-ring uniformly into groove
Mount "actuator/gate assembly" (see 5.1.4)
