Labconco FreeZone 794801 Series, Руководство пользователя

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Chapter 4: Using Your Stoppering Tray Dryer
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Original instructions
6. Before adding another sample, allow system vacuum to return to 0.133
mbar or lower. Any combination of valves and sample sizes may be
utilized at one time provided that the system vacuum and collector
temperature remain sufficiently low to prevent melting of the frozen
sample.
7. When all the frost has disappeared from the outer surface of the sample
container and no cold spots can be detected by handling the container, the
sample is nearly dry. To be certain of low final moisture content, dry the
sample for several hours past this point.
8. To remove a container after drying is complete, turn the plastic knob on
the valve to the “VENT” position, which closes the valve and vents the
container. Should backfilling with an inert gas be required, simply
connect the gas supply line to the vent port on the valve. The sample
container may now be removed. In the vent position the bevel on the knob
should point away from the sample port.
Note location of bevel on
knob in vacuum position
Valve in Vacuum or Run Position