User guide

Checking for Leaks 6
Advanced User Guide 125
15
From the keypad, press [Service Mode]. Select Diagnostics >
Front or Back Inlet > Pneumatics Control > Septum Purge control.
16 Scroll to the Constant duty cycle and enter 50. Wait 10 seconds.
17 Press [Front or Back Inlet]. Scroll to Pressure and press Off/No.
18 Quickly turn off the carrier gas supply at its source.
19 Monitor the pressure for 10 minutes. Use the timer by
pressing [Time] and [Enter].
A pressure drop of less than 0.5 psig (0.05 psi/min or less;
3.4 kPa or 0.34 kPa/min) is acceptable.
Back inlet purge
vent
Front inlet
purge vent
Back inlet split
vent
Front inlet split
vent
Front purge vent shown plugged