Lighting The Flame; Automatic - HP 6890 series Operating Manual

Lighting the flame

Manual
To start the flame ignition sequence:
Press [Front Det] or [Back Det]
FRONT DET (FPD)
Temp 250 250
H2 flow 50.0 50.0
Air flow 60.0 60.0
Mode:Col+mkup=const
Combined flow 15.0
Mkup (N2) 50.0 50.0
Flame Off <
Output 0.0

Automatic

If the FPD output with the flame on falls below the flame off output plus
the Lit offset value, this is interpreted as a flame out condition. The
FPD runs the flame ignition sequence to relight the flame. If this fails, it
runs the sequence again. If the second attempt also fails, the detector
shuts down all functions except temperature and makeup gas flow.
Scroll to Flame and press [On]
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