PerkinElmer CLARUS 590 GC, User Manual

Page: 46 / 284

46 . Clarus 590 GC User’s Guide
After the flame ignites, the output level is monitored to confirm ignition before producing a READY signal.
If ignition is not confirmed, the ignition process repeats up to two more times if needed. If ignition is not
achieved after three attempts, the flame gases are set to off and a dialog box appears displays the
following message: “ Flame 1 or 2 failed to ignite.”
Touch the OK button. The status is made NOT READY and “ FID 1 or 2 flameout” appears. If auto-
ignition is attempted with the detector gases set to zero flow, the message “ No ignition. Flame gases
are off” appears on the screen. To proceed, go the PPC screen and touch Reset to the Configuration
screen and reset the air and hydrogen to their 450 and 30 mL/min flowrates.
Auto-Ignite Process
The auto-ignition process only occurs before the start of each run just prior to the instrument becoming
READY. However, the manual flame ignition process, performed by touching the Ignite button, can be
initiated at any time.
Auto-ignite proceeds in the following sequence:
1. When auto-ignite begins the Clarus GC equilibrates.
2. Once the two minutes of equilibration expire,
PRE-RUN
begins and the GC detects that the flame is
not lit and indicates this by alternately flashing Flame? and Method 5 in the status bar.
3. After determining that the flame is not lit, the GC switches to a not ready state and attempts to
automatically ignite the flame. Flame Ignition 1 appears in the status bar.
4. The air flow is shut-off and hydrogen is purged through the FID for 10 seconds.
5. The ignitor energizes, the flame ignites (indicated by the a pop sound), and air flow is returned to
sustain the flame. The FID output level is monitored to confirm that the flame is lit. If a lighted
flame is not confirmed, the GC repeats the ignition process up to two more times.