150 Operation Manual
10 Configuration
feature. We recommend cryo timeout enabling to conserve
coolant at the end of a sequence or if automation fails. A
Post Sequence method could also be used.
Cryo fault This parameter is available with N2 cryo and CO2
cryo Cryo types. Shuts down the inlet temperature if it does
not reach setpoint in 16 minutes of continuous cryo
operation. Note that this is the time to reach the setpoint,
not the time to stabilize and become ready at the setpoint.
Shutdown behavior
Both Cryo timeout and Cryo fault can cause cryo shutdown.
If this happens, the inlet heater is turned off and the cryo
valve closes. The GC beeps and displays a message.
The inlet heater is monitored to avoid overheating. If the
heater remains on at full power for more than 2 minutes,
the heater is shut down. The GC beeps and displays a
message.
To recover from either condition, turn the GC off, then on,
or enter a new setpoint.
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