Velp Scientifica ARE 6 Manual De Instrucciones página 7

1. Introduction
The ARE/AREX 6 heating magnetic stirrer is used in the laboratory for general use and for all those applications that require high
regulation for stirring speed and heating liquids.
The Aluminum alloy heating plate ensures:
• Optimum heat distribution and a high specific power thanks to the circular configuration
• Temperature homogeneity
• High resistance to thermal stress and thermal shock
Magnetic stirring is generated by an AlNiCo magnet, driven by brushless motor which offers a virtually unlimited duration.
Size and shape of the magnetic stir bar determines the stirring efficiency at any given speed.
The stirring bar code which satisfies most applications is A00001056 (6x35 mm).
NOTE: The vessel must be made of a suitable material to withstand the foreseen temperature.
NOTE: Using the heating plate at high temperatures may cause discoloring. This does not alter the thermal, mechanical and chemical
resistance of the plate in any way.
2. Assembly and installation
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Unpacking
- Check the integrity of the unit after unpacking.
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The box includes
- ARE/AREX 6 heating magnetic stirrer
- Power supply cord
- Instruction manual
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First installation
- Place the unit on not-flammable surface
- Make sure that the values on the rating plate, correspond to those of the power supply
- Move the main switch to the OFF position
- Ensure that the socket provided with grounding is accordant to current safety norms and easy to reach. Use only the cable
provided with the instrument
- Insert the mains power cable into the socket
NOTE: the mains cable must remain far away from the hot plate. It can be substituted only by main cables with same features (T=90°C,
connector C15).
3. Operating controls
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Commissioning
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Stirring
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Heating
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NOTE: this warning is not active if the instrument is not powered.
4. External thermometers
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Move the main switch to off position
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Screw the threaded support rod into its seat on the back of the instrument
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Fasten the VTF thermoregulator onto the support rod
VTF (only for
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Place the temperature probe in the flask
AREX 6)
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Plug the VTF into the dedicated socket on the back of the instrument
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Switch on the instrument through the main switch and set the temperature set point on the VTF
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Move the temperature potentiometer to the max value* and click the central button
* The temperature control function of the heating plate can also be used as a safety thermostat. In this case the maximum temperature of
the heating plate will not exceed the temperature setting on the AREX 6 meaning that a longer heating time is required in order to reach
the VTF thermoregulator temperature set reducing temperature oscillation at set point value.
Switch on the instrument through the main switch
The right led between the two potentiometers turns on
Adjust motor speed set point by turning the speed control potentiometer
While the instrument is stirring, the led over the speed control potentiometer turns on
A microprocessor ensures constant speed even when the viscosity changes (counter-reaction)
Switch off the stirring by turning the speed control potentiometer to value zero
Adjust heating plate temperature set point by turning the temperature control potentiometer
Start heating clicking the central button. The button lights on.
While the instrument is heating, the led over the temperature control potentiometer turns on.
Switch off the heating clicking again the central button.
When the heating plate temperature exceeds 50 °C, the left led between the two potentiometers turns
on until temperature falls below 50 °C
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