Configuration 10
Operation Manual 145
To configure the oven
1 Press [Config][Oven].
2 Scroll to Maximum temperature. Enter a value and press
[Enter].
3 Scroll to Equilibration time. Enter a value and press [Enter].
4 Scroll to Cryo. Press [On/Yes] or [Off/No]. If On, enter the
setpoints described in “To configure the oven for
cryogenic cooling” on page 145.
5 Scroll to External oven mode. Press [On/Yes] or [Off/No].
6 Scroll to Slow oven cool down mode. Press [On/Yes] to run
the oven fan at reduced speed during cool down, or
[Off/No] to run it at normal speed. Note that enabling this
feature means the GC will cool more slowly than noted in
the GC’s published specifications.
To configure the oven for cryogenic cooling
All cryogenic setpoints are in the [Config][Oven] parameter
list.
Cryo [ON] enables cryogenic cooling, [OFF] disables it.
Quick cryo cool This feature is separate from Cryo. Quick
cryo cool makes the oven cool faster after a run than it
would without assistance. This feature is useful when
maximum sample throughput is necessary, however it does
use more coolant. Quick cryo cool turns off soon after the
oven reaches its setpoint and Cryo takes over, if needed.
Ambient temp The temperature in the laboratory. This
setpoint determines the temperature at which cryogenic
cooling is enabled:
• Ambient temp + 25°C, for regular cryo operation
• Ambient temp + 45°C, for Quick Cryo Cool.
Cryo timeout Cryo timeout occurs, and the oven shuts off,
when a run does not start within a specified time (10 to 120
minutes) after the oven equilibrates. Turning cryo timeout
off disables this feature. We recommend that it be turned on
because cryo timeout conserves coolant at the end of a
sequence or if automation fails. A Post Sequence method
could also be used.
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