Retsch AS 450 control - Handbuch (Seite 33)

Wet sieving
33
NB
9.H0050
Load diagrams
–
Binding information on wet sieving is not possible because it is not
possible to define the volume of water in the sieve column.
• The load diagrams in these operating instructions do not apply to wet
sieving.
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Dry sieve analyses are possible in most applications. However, there are materials
for which the adhesive force between the individual particles causes difficulties.
These problems can be eliminated by adding liquids, preferably water, during the
sieving operation (if the additives specified in the chapter on sieving aids have not
helped). However, wet sieving is only possible if the materials to be sieved do not
swell, dissolve or change in any other way in the sieving liquid.
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8.1 Required accessories
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• Clamping cover with spraying nozzle for the corresponding sieve diameter.
• Collecting bottom container with water outlet point for the corresponding
sieve diameters.
8.1.1 Preparing the Wet Sieving
WARNING
Risk of electrocution
–
An electric shock can cause injuries in the form of burns and cardiac
arrhythmia, respiratory arrest and cardiac arrest.
• Never operate your AS450 in a water outlet basin.
• Always operate your AS450 connected to a mains socket protected
by an RCD circuit-breaker.
CAUTION
Risk of electrocution
–
The operation panel has the IP40 safety class.
– Make sure the operation panel does not come in contact with water.
• Use a hose to connect the clamping cover’s spraying nozzle to a water tap.
• Connect the drain from the collecting panto the water drain point or an
appropriate collection container.