Operation - Velp Scientifica AREC.X Manuel D'instructions

3. Operation

Power-up
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Turn the unit on using the main switch
•
The display shows the software version, the set starting mode (A or B) and the last temperature setpoint
If the set starting mode is A (see chap. 4), the heating and the stirring (not available on REC) functions are not
active and the display shows OFF. Otherwise, the unit starts working at the last set temperature and speed (not
available on REC) setpoints.
Stirring (not available on REC)
•
Rotate the right knob to set the stirring speed
•
The dedicated led is on when the stirring function is active
Heating
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Rotate the left knob to set the heating plate temperature
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The display shows the current heating plate temperature for 3 seconds and the setpoint for 1 second
Note: when the display shows the temperature setpoint, the dedicated led "Set" is on.
Note: if the heating function is not active and the heating plate temperature is more than 50 °C, the display shows
the blinking message "Hot". This warning is not active if the instrument is not powered.
External probe connection (only for AREC.X)
•
Turn off the instrument using the main switch
•
Screw the threaded support rod into its seat on the back of the instrument (optional)
•
Fasten the clamp onto the support rod (optional)
•
Place the external temperature probe into the clamp (optional); then place it into the sample contained inside the
flask
•
Plug the probe into the dedicated socket on the back of the instrument
•
Turn the unit on using the main switch
When the external probe is connected, the dedicated led "Probe" is on.
The heating function works as described above but the settable and showed temperature will be that read by the external
probe.
Note: make sure that the set "heating plate temperature limit" (see chap. 4) is suitable for the liquid in use. The temperature
of the heating plate will not exceed the set value. By decreasing the temperature limit, it's possible to minimize potential
overshoot and the time for reaching the working temperature will be longer.
External thermoregulator connection (only for AREC.X)
•
Turn off the instrument using the main switch
•
Screw the threaded support rod into its seat on the back of the instrument
•
Fasten the VTF thermoregulator onto the support rod
•
Place the temperature probe into the sample contained inside the flask
•
Plug the VTF connection cable into the dedicated socket on the back of the instrument
•
Turn the unit on using the main switch
When the external thermoregulator is connected, the dedicated led "Probe" is on and the display shows "- - -".
Rotate the temperature control knob to the maximum and set the working temperature on the VTF.
Note: make sure that the set "heating plate temperature limit" (see chap. 4) is suitable for the liquid in use. The temperature
of the heating plate will not exceed the set value. By decreasing the temperature limit, it's possible to minimize potential
overshoot and the time for reaching the working temperature will be longer.
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