Installation, Operating, and Maintenance Instructions
Series 08, DN 63 - 100 (2½" - 4")
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel +41 81 771 61 61 Fax +41 81 771 48 30 [email protected] www.vatvalve.com
222687EC
2003-04-14
7/8
Trouble shooting
Valve does not close/open: Power available?
Compressed air available?
Emergency operation in neutral position?
Solenoid defective?
Check voltage!
Check air pressure!
Leak at gate:
Clean valve seat and gate seal!
Replace gate seal, if damaged!
Correct air pressure?
Leak at body:
Flanges leaktight?
Replace bonnet seal!
Screws at bonnet tightened?
Repairs
Contact VAT for repairs or maintenance. The fabrication No. (F08- . . . . . / . . . . ) marked on the valve body has always to
be specified. It has to be individually decided whether the work can be performed by the customer or has to be carried out
by VAT.
All supplies (e. g. compressed air, electrical power) have to be disconnected for removal/installation of the valve from/into
the system.
Even with disconnected supply, loaded springs and/or air cushions in cylinders can be potential hazards.
Keep fingers and objects away from the valve opening!
Products returned to VAT for repair have to be free of harmful substances such as e.g. toxical, caustic or microbiological
ones. For radioactively contaminated products the customer has to fill in the VAT form «Contamination and Radiation
Report» and to send it with the product. The form is available at VAT. The maximum permissible values indicated in the
form must not be exceeded.
