Agilent Technologies TwisTorr 74FS AG Rack Mode D'emploi page 214

17 Technical Information
Controller Connection
J7 – Vent
Figure 7
This is the connection to control the optional vent valve (see
orderable parts table). The vent valve can be driven by controller
automatically or by serial line.
If you have other vent valves installed (110 Vac powered), it
must be replaced (see orderable parts table).
Vent Valve
CLOSED
OPEN
Figure 8
214/300
Vent Connector
RAMP
STOP NORMAL
START COMMAND
Vent Valve diagram in "Auto" mode
TwisTorr 74 FS AG Rack Controller User Manual / 87-901-055-01
Vent Valve Relay Vent Valve Open
Time Win. 147
Win. 126
STOP COMMAND