VAT 75.0 Series, Инструкции по установке, эксплуатации и обслуживанию, Страница: 10 / 12

Installation, Operating & Maintenance Instructions
Series 75.0, DN 63-200 CF-F (I.D. 2½“- 8")
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
280717EA
2009-03-05
10/12
5.1 Exchange of Seat O-Ring
In order to exchange the seat O-ring you have to release the compressed air from the air cylinder to avoid accidental
closing of the valve. To achieve this:
- close the valve
- unplug air supply
- control the valve to open to release the compressed air pressure
The plate will be in an intermediate position defined by the force of gravity and the spring force of the bellows.
Now you can replace the O-Ring (63/2) without any danger.