116 Agilent 7890 Series Troubleshooting
5 Shutdown Symptoms
Detector Air Shutdowns
When air is used to combust a fuel gas (hydrogen) in a detector,
an insufficient air supply will cause a shutdown for the air
channel. In addition, the Air and Hydrogen flows for the
associated detector will be turned Off.
To recover from this state.
1 Fix the cause of the shutdown. Verify the air supply. The FID
and NPD require a delivered gas pressure of 380–690 kPa
(55–100 psi). The FPD and FPD
+
require a delivered gas
pressure of 690–827 kPa (100–120 psi). See the Agilent GC,
GC/MS, and ALS Site Preparation Guide.
2 Press the key for the detector that initiated the shutdown.
Scroll to each pneumatic parameter that is flashing Off, then
press [On] or [Off].
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