Installation, Operating & Maintenance Instructions 
Series 650 DN 100-250 (I.D. 4“ - 10”), CC-Link 
 
 
 
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 
280672EB 
2010-12-15 
87/94 
 
Description  Required tool 
5.  Pull out the option board a little 
6.  Push the connector release (1) a little down 
and disconnect fan cable (2) from option 
board 
 
7.  Remove the interface board or replace it, if 
existing master board is defect 
 
8.  Remove the master board or replace it, if 
existing interface board is defect 
 
9.  Remove the option board or replace it, if 
existing option board is defect 
 
10.  Insert all boards in reverse order as they 
disassembled at correct positions (see 
steps 9…7)