Safety Precautions; Unpacking And Assembly; Melting Point Analysis - kruss M5000 User Manual

2. Safety precautions / 3. Unpacking and assembly

2. Safety precautions

• Do not cover ventilation slots.
• Do not insert any objects into ventilation slots.
• No humidity may intrude into the device.
• During analysing the melting point, the measuring head heats up extremely around
the ventilation slots. Do not touch the measuring head in this area.
• Only use suitable capillary tubes with an external diameter of 1.4 mm for the
determination of the melting point.
• When working with chemicals, follow safety precautions.
• When maintaining the device, e.g. changing the fuse, cleaning with a dry or any
slightly wet towel, always make sure that the device is disconnected from electricity.
• Only authorized personnel or the manufacturer may carry out servicing and
maintenance.

3. Unpacking and assembly

• Carefully unpack the device.
• Immediately report any transport damage occurred.
Find a suitable place for the device, i.e. avoid direct sunlight and vicinity of heating
devices. Connect power plug to 230 V / 50 Hz alternating current.
Before initial measuring the device should be switched on for about 15 min to reach
ideal working temperature.
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4. Melting point analysis

With the device you will be able to determine the melting point of powdery substances
up to 400 °C.
► Switch on the mains switch on the back of the device.
You will see the current oven temperature on the display and you will hear a signal
tone.
► By pressing the arrow key, select the desired starting temperature (approx. 3 °C
below expected melting point).
► When having reached the selected starting temperature, carefully insert a filled capil-
lary tube (filled with approx. 4 mm) with the opening facing upwards into the drill
hole of the guiding head until you feel the capillary tube touching the end.
After having reached the melting point, the device falls back to the selected tem-
perature and you will also hear a signal tone. The melting point is displayed and can
be printed via the printing key.
► During cooling down to the starting temperature "auto/waiting" will flash up on the
display. After the "waiting" display has disappeared, the same measuring can be
repeated.
► If there is no new measuring within 5 min, the device automatically cools
down (fan) to 30 °C.
► Do not switch off the device before reaching 30 °C, because then the fan cooling
will also be switched off.
► If you wish to carry out a measuring while the cooling is operating, you can directly
select the temperature using the arrow keys. The cooling will switch off automatically.
► If the desired starting temperature is below the current temperature, you have to wait
until the cooling has reduced the temperature.
► Do not attach protective cover before the device has cooled down.
4. Melting point analysis
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