Labconco CentriVap Concentrators and Cold Traps 74750 Series - Manual (Page 25)

Chapter 4: Using Your CentriVap
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10. Set point parameters can be altered at any time during a run by first selecting
the parameter using the set point “SELECT” button and then pressing the
“INCREASE” or “DECREASE” switch.
11. If the time set point is used, at the end of the set time an alarm sounds. All
functions cease.
12. Press “STOP” to terminate operation if the CentriVap has not already stopped
itself.
13. When the evaporation is complete, allow the rotor to stop moving, lift the lid
and remove the samples.
Operational Notes
As solvent is evaporated in the Concentrator and then condensed in the Cold Trap,
it is normal for the Cold Trap temperature to rise as its load increases.
Depending on which solvent is used, the volume of the sample and the system
operating parameters, the Cold Trap may warm up sufficiently to cause the
“GREEN” indicator to turn off. As the sample reaches completion, the load on
the Cold Trap will decrease and its temperature will decrease. The “GREEN”
indicator will once again illuminate.
When the CentriVap is turned ON, the CentriVap returns to the same mode
(“RUN” or “STOP”) that it was in when the power was turned OFF. If the
CentriVap was in the “RUN” mode when the power was turned OFF, when the
power is turned ON, the CentriVap attempts to return to the programmed set
points and continue the run.
Cycle Interruption
At any time during a run, the cycle may be stopped by pressing the “STOP”
button. This shuts off all operating functions. After the rotor stops, the lid may
be opened. If it is necessary to re-start the CentriVap, close the lid and press
“RUN.” The CentriVap resumes operation at the same set point parameters and
the timer continues to count down from the time at which the CentriVap was
stopped.
Safety Precautions
Special precautions must be observed if the materials used in the CentriVap
Concentrator are known to be hazardous, toxic, radioactive, or contaminated with
pathogenic micro organisms. These actions should include but are not limited to
the following:
• Refer to the World Health Organization Laboratory Biosafety Manual,
paying special attention to information about centrifuges and the handling
of hazardous materials.
• Operate or vent the CentriVap Concentrator inside a suitable fume hood or
ventilation device. Load rotors in a ventilation device.
• Periodically inspect all parts of the CentriVap Concentrator including the
lid, gasket, chamber, plumbing components and rotors.