Thermo Scientific RC 3BP Plus, Instruction Manual

Page: 44 / 70

5
Advanced Features
Advanced Features
5-6 Sorvall RC 3BP Plus Thermo Scientific
• Recalling program runs may change the overtemperature limit. Specific overtemperature limit
settings can be saved in run programs.
EXAMPLE: If you have a set temperature of 22° C and set the maximum temperature to 24° C, an
overtemperature alert will occur if the calculated sample temperature reaches 25° C. If the set
temperature is then changed to 4° C, the maximum temperature setting will automatically change
to 6° C.
•
During a run, if the calculated sample temperature in the RUN display goes above the maximum
allowable sample temperature, the run will terminate. The message
SAMPLE TEMPERATURE
OVER LIMIT will appear in the set display and an alarm will sound. This may indicate a condition
requiring simple corrective action, or it could indicate a refrigeration problem ( “SAMPLE
TEMPERATURE OVER LIMIT” on page 8-3 ).
• Overtemperature termination is deactivated when a temperature change between programs occurs
in a QC RUN. If, during a QC RUN, the observed RUN temperature is more than 2° C over SET
temperature, the rotor continues spinning until set temperature is reached.
•
After CHANGE OVERTEMPERATURE LIMIT selections are completed, SELECT STEP RUN?
will appear in the set display.
STEP RUN
•
STEP RUN allows the linking-together of up to 3 sets of programmed run parameters to
automatically perform step run protocols.
• If the desired parameters have not been entered into memory, you must save each desired set of
parameters to memory before continuing with step run creation.
•
If programs are used within a step run, that have not been defined before, a warning message will
be displayed.
• To create a step run, input a program number 1-9 for the first portion of the step run.
• The set display will prompt for another number, input a program number 1-9 for the second
portion of the step run.
•
The set display will prompt for another number, input a program number 1-9. Press (if you are
creating a two-stage step run), or input a program number 1-9 for the third portion of your run.
•
Step runs can be saved to program memory (program numbers 10-15) for simple recall in future
use (see SAVE TO PROGRAM MEMORY below)
•
Runs are not inadvertently corrupted, whenever STEP RUN has been selected (indicator lit).
•
Changes to run parameters will be ignored unless STEP RUN is deselected before you press the
key.
• The only changes that could be made without deselecting would be if a different step run was
recalled from program memory (program numbers 10-15).
•
After STEP RUN selections are completed, SAVE TO PROGRAM MEMORY? will appear in the set
display.
Note When step run is selected, the specified programs must specify the same rotor at similar
temperatures