2 | Safety
Büchi Labortechnik AG
10/78
Operation Manual Rotavapor® R-250 Pro
2.7.1
Dangerous vapors
Distillation can produce dangerous vapors that are capable of causing life-
threatening toxic effects.
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Do not inhale any vapors produced during distillation.
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Ensure that vapors are removed by a suitable fume hood.
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Only use the device in well ventilated areas.
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If vapors escape from joints or connections, check the seals concerned and
replace them if necessary.
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Do not distill any unknown fluids.
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Observe the safety data sheets for all fluids used.
2.7.2
High internal pressure
The evaporation of fluids can produce high pressures inside the flask or the
condenser. If that pressure becomes too great, the glass components could explode.
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Make sure that the internal pressure inside the glass components is never greater
than atmospheric pressure.
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When distilling without a vacuum, set the vacuum pump to atmospheric pressure
so that excess pressure is automatically dissipated.
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If a vacuum pump is not used, leave the vacuum connection open.
2.7.3
Hot surfaces and liquids
The heating bath, evaporating flask and parts of the condenser can become very hot.
If touched they can cause skin burns.
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Do not touch hot surfaces or liquids or else wear suitable protective gloves.
2.7.4
Rotating parts
The evaporating flask and the vapor duct are rotated by the rotary drive unit. Hair,
clothing or jewelry can become caught up if allowed to come into contact with the
rotating parts.
At high speeds, the heating fluid may be sprayed out by the rotation of the
evaporating flask.
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Wear work overalls or protective clothing.
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Do not wear loose or baggy items of clothing such as scarves or neck-ties.
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Tie up long hair.
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Do not wear jewelry such as necklaces or bracelets.
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At high speeds and/or high temperatures, use the optional safety guard or a
similar protective arrangement.
2.7.5
Faults during operation
If a device is damaged, sharp edges, moving parts or exposed electrical wires can
cause injuries.
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Regularly check device for visible damage.
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If faults occur, switch off the device immediately, unplug the power cord and
inform the operator.
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Do not continue to use devices that are damaged.
2.7.6
Glass breakage
Broken glass can cause severe cuts.
