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the immediate atmosphere. When the limit is exceeded, the
CombiFlash Rf will shut down to avoid a hazardous condition.
Teledyne Isco recommends using the default setting of 25.
This value represents an organic vapor level slightly above the
ambient vapor level of a well-ventilated laboratory.
A setting below 25 could cause random alarms without
significant vapors present. If PeakTrak displays a Vapor Limit
alarm while the Vapor Limit is set at 25, perform the following
checks on your laboratory and the instrument:
• Ensure that no open containers or spills of organic
solvent are in close proximity to the system.
• Ensure that the system is located in a well-ventilated
area.
• Ensure that there is no visible solvent leakage from the
system.
If PeakTrak continues to display the Vapor Limit alarm after
you have made these checks and corrected any problems
found, it is likely that organic vapors are present in the
ambient environment of your laboratory. In this case, increase
the setting of the Vapor Limit. Settings greater than 25 are
appropriate for laboratory environments with a somewhat
elevated background solvent vapor concentration,
representing a safe setting, but one with a reduced margin for
error.
6.5
Section 6 User Help Reference
6-63
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