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Operation
How to use the FUNCTION field
2-32
WX Ultra Series
Thermo Scientific
Step-mode operation
This ultracentrifuge incorporates a step-mode operation feature, which stores two or more run
conditions in one program memory area and switches between different values of speed, running time,
temperature, and other parameters while in operation. This centrifuge can store up to nine steps.
This section explains how to make settings by showing some examples.
(1) How to activate a step-mode operation
[Typical settings]
Shown below is the example of a three-step run and how to activate a step-mode operation.
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To run the centrifuge, select “Yes”.
Yes
No
>> If you select “Yes”
>> The message field in the bottom row displays PROG.
>> If the STEP field displays what is shown in the figure below, that means that
the memory number you have just called stores multiple run conditions
(step-mode feature). For details, see Section
Step-mode operation
.
>> If you select “No”, the message field in the bottom row displays what you see
in process 5. Select a new condition.
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Start running the centrifuge under nor-
mal operation with no changes made
to the run conditions.
>> Run this machine according to Section
Normal operation
.
>> If you make changes to the run conditions (such as SPEED and TIME) after
recalling a program, the program you have just recalled will be canceled. You
must recall the program again to use it.
• The display switches back to the
Run Screen.
• The run conditions in memory
appear in the respective fields.
In the Run Screen, the run conditions of
this step are displayed (the first step in
this case).
Final step
Note
1. To check the contents (run conditions) of the memory number for the program while in
running, follow processes 3 through 5 in (b) “If you do not know which memory unit number
you need.” After the check, press ESC to get back to the Run Screen.
2. To perform a combination of a programmed run with RTC (real-time control) (see Section
RTC (real-time control) feature
), first recall a programmed memory number, then set RTC.
The system will then calculate the total of the running times of all steps of the programmed
run and calculate the start time for RTC. Therefore, you cannot recall the program memory
after setting RTC.
Summary of Contents for WX 100 Ultra
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