Columns and Oven 4
Advanced Operation Manual 149
If the temperature goes below the minimum allowed
temperature (–90 °C for liquid nitrogen, –70 °C for liquid
CO
2
), the oven will shut down.
External oven mode Isothermal internal mode and
programmed external oven used to calculate column flow.
Slow oven cool down mode On to run oven fan at slow speed
during cool down.