70 Troubleshooting
5 Shutdown Symptoms
Column Shutdown
If a carrier gas (which can include an auxiliary flow module or
pneumatics control module) shuts down, the following happens:
• The oven turns off to avoid column damage.
• The oven flaps in the back of the oven open halfway.
• The oven temperature setpoint flashes Off.
• All flows for the column turn off. When viewed, their
parameters flash Off. For example, the septum purge and
column flows for a split/splitless inlet would turn off.
• All other heaters turn off. When viewed, their temperature
parameters flash Off.
• Attempts to turn on a shut-down zone fail with an error
message.
• The instrument beeps.
To recover from this state.
1 Fix the cause of the shutdown.
• Check for a broken column.
• Replace the inlet septum.
• Replace the inlet O-ring.
• Check the supply pressure.
• Check for leaks.
2 Press the key for the device that initiated the shutdown.
Scroll to the pneumatic parameter that is flashing Off, then
press [On] or [Off].
For example, if the front inlet ran out of carrier gas, press
[Front Inlet], scroll to the pressure or flow parameter, then
press [On].
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