Controlled Venting - Agilent Technologies TwisTorr Medium-TMP Notice De Mode D'emploi

17 Technical Information
Connection J1 Remote I/O Interconnections
Figure 19

Controlled Venting

In the following conditions the Vent Valve performs a Controlled Venting.
If WIN 125 = 1 (On Command mode), WIN 122 = 1 and the pump is in
BRAKING status;
If WIN 125 = 2 (Auto Pump Speed mode) and the pump is in
BRAKING status.
During a Controlled Venting procedure the Vent Valve opening time
is modulated so that the pump deceleration quickness is maintained
in the range between 3 and 5 Hz/s. The timing is adjusted every 10
seconds.
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Vent and Purge Valves diagram for "Autotime" mode
TwisTorr Medium-TMP Rack Controller User Manual / 87-901-049-01