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 [email protected] www.vatvalve.com
258343EE
2013-09-16
8/14
3
Operation
3.1 Normal operation
Valve with pneumatic actuator: - valve is opened by a spring (NO)
- valve is closed pneumatically
3.2 Operation under increased temperature
3.3 Behavior in case of compressed air pressure drop
Valve closed: valve opens
Valve open: valve remains open
3.4 Behavior in case of power failure
Valve is opened by a spring
4
Trouble shooting
Failure
Check
Action
Valve does not close
Power available?
Connect correct voltage
Compressed air available?
Connect correct air pressure
If you need any further information, please contact one of our service centers. You can find the addresses on our website:
http://www.vat.ch
