VAT 64 Series - Operation under Increased Temperature; Behavior in Case of Differential Pressure; Behavior in Case of Compressed Air Failure; Behavior in Case of Power Failure

Installation, Operating & Maintenance Instructions
Series 64, DN 63-400 (I.D. 2
1
/2" - 16")
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
219034EM
2013-08-27
12/19
3.2 Operation under increased temperature
See «1.1 Technical data»
3.3 Behavior in case of differential pressure
Note: Do not open the valve, if the differential pressure on the gate is larger than 30 mbar.
3.4 Behavior in case of compressed air failure
Valve closed: valve stays closed and leaktight
Valve open or Intermediate position: valve stays open or moves into closed (not leaktight) position, depending on the
mounting position
3.5 Behavior in case of power failure
Standard solenoids: valve closes
Impulse solenoids: valve moves to the position of last command and stays in this position
The solenoids can be actuated manually in case of power failure according to the following instructions:
Standard solenoid valve
Solenoid for impulse actuation (option)
Emergency
operation screw
Emergency
operation screw
SV1
SV2
5
1
3
To open the valve:
Turn emergency operation screw fully clockwise
To close the valve:
Turn emergency operation screw fully counter-
clockwise
Attention!
Remote operation is only possible when the screw is
turned fully counter-clockwise
To open the valve:
Turn emergency operation screws of coils «SV1»
clockwise to mechanical stop. Turn back emergency
operation screws counter-clockwise as soon the valve
is open
To close the valve:
Turn emergency operation screws of coils «SV2»
clockwise to mechanical stop. Turn back emergency
operation screws counter-clockwise as soon the valve
is closed
Attention!
Remote operation is only possible when both screws
are turned fully counter-clockwise