Velp Scientifica AREX 5 Manual De Instrucciones página 8

2. Installation
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Unpacking
➢ Check the integrity of the unit after unpacking
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The box includes
➢ AREX 5 Digital heating magnetic stirrer
➢ Instruction manual
➢ Power cable
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Installation
➢ Place the unit on a non-flammable surface
➢ Make sure that the technical specification of the unit and of the power supply line are the same
➢ Make sure that the electrical network is grounded
➢ Make sure that the main switch is on position "0" (OFF)
➢ Connect the instrument to an easily accessible socket (compliant with the current safety norms), using only the
provided power cable
Note: keep the power cable far away from the hot plate.
➢ Place the container with the liquid and the stir bar on the stirring plate
3. Operation
Power-up
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Turn the unit on using the main switch
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The display shows the software version and the last setpoint values
If the set starting mode is
show . Otherwise, the unit starts working at the last set temperature and speed setpoints.
Stirring
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Rotate the right knob to set the stirring speed
•
Push the knob to start stirring
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The real speed increases until set point achievement
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A microprocessor ensures constant speed even if the viscosity changes (SpeedServo)
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Push the knob to stop stirring
Heating
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Rotate the left knob to set the heating plate temperature
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Push the knob to start heating
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The display shows the current heating plate temperature for 3 seconds and the setpoint for 1 second
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When the display shows the temperature setpoint, the Set led is on
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Push the knob to stop heating
Note: if the heating function is not active and the heating plate temperature is higher than 50 °C, the display shows
the blinking message "Hot". This warning is active even if the main switch is off but not if the instrument is not
powered.
Operation with thermoregulator VTF
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Turn off the instrument using the main switch
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Screw the threaded support rod into its seat on the back of the instrument and fasten the VTF thermoregulator onto
the support rod. Place the temperature probe in the flask making sure that it is completely immersed in the sample
•
Plug the VTF into the dedicated socket on the back of the instrument
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Turn the unit on using the main switch. When the VTF is correctly connected, the Probe led is on. The working
temperature is shown on the display of the VTF
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Select the temperature set point on the VTF
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Push the left knob to start heating. The left display of the AREX 5 Digital shows ---
(see chap. 4), the heating and the stirring functions are not active and both displays
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