Buchi Lyovapor L-300, Руководство по эксплуатации

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Operating Pro control panel | 7
Operation Manual Lyovapor™ L-300/L-300 Pro 71/118
Setting Option Explanation
[[Pressure dif-
ference limit]] Enter value Specifies the difference between
the two sensor readings below
which the end point is reached.
[[Duration]] Enter value The period of time during which
the difference is not to be ex-
ceeded. If the threshold is not
exceeded for the full period of
time, the pressure difference
test is passed.
[[Continue]] Yes/No Yes : the method switches to the
next phase.
No: the phase is ended when the
set levels are reached.
[[Message]] Yes/No The control panel shows or does
not show a message as soon as
the pressure difference test is
passed.
7.8.2 Temperature difference test
NOTE
The temperature test is successfully completed if all drying shelves are below the
threshold.
The samples on a drying shelf have different drying times. Take account of the
different drying times in the
[Duration] setting.
The temperature difference test establishes the difference between the readings
from the temperature sensor for the heatable shelf and the temperature sensor in
the sample. If the difference between the two sensor readings is below a threshold,
the freeze-drying phase can be ended.
Navigation path
➔ Method
Precondition:
R
The heatable shelves are fitted in the rack. See Chapter 8 "Operating top-mount
drying racks", page 81
R The optional temperature sensor has been installed. See Chapter 8 "Operating
top-mount drying racks", page 81
u
Place the optional temperature sensor in the sample.
u
Navigate to the [Method] menu via the navigation path.
u
Tap the name of the method that you wish to edit.
ð The control panel highlights the selected method in green.
u
Tap the action [Phase] .
ð The control panel shows the action Phase.