Replacingthe Grinding Tool; Maintenance And Cleaning - IKA A 10 Mode D'emploi

order to connect the cooling brine. Cooling with tap water is usual-
ly sufficient for substances which become hot as a result of the
grinding operation and are thus given to smearing or those that
produce oil.
The grinding chamber may only be filled halfway especially when
drugs containing oils and similar materials are ground.
If more refrigeration is required then the ground matter should be
cooled prior to being put into the grinding chamber.
The following procedure shall apply if liquid nitrogen is used in
order to embrittle the material to be ground:
Safety infomation:
Suitable protective gloves must be worn when filling and
transferring liquid nitrogen!
Protective glasses must be worn!
• The sample to be ground is put into a suitable vessel (e.g. eva-
porating dish) and covered with enough liquidnitrogen until it is
completely covered.
When using liquid nitrogen make certain that the sample is not
capable of reacting with oxygen.
• Cool grinding chamber using liquid nitrogen.
• Put the deep-cooled sample into the grinder and grind approxi-
mately 15 seconds.
• Then open the grinder and add liquid nitrogen for only as long as
it takes for the sample to become deep-cooled again (embrittled).
Safety infomation:
Make certain that the liquid nitrogen has evaporated
before beginning the grinding operation.
Note: Danger of overpressure!
• Repeat the grinding operation for approximately 15 seconds.
• Repeat the sequence of cooling and grinding until desired finen-
ess has been achieved.
• If the required fineness has not been achieved after 5 minutes,
then a further reduction in grain size is unlikely.
The respective grinding chambers are sealed by means of laby-
rinth sealings. Though they are dust-proof, they are not leak-proof.
072001
This should be taken into account for substances where liquids
may escape.
Replacing the grinding tools
The grinding tool is fixed by means of the retaining tube and the
cap nut is unscrewed by using zhe SW 8 or 10 spanner. The grin-
ding tool, which rests on a double-edge track, may then be pulled
out.

Maintenance and cleaning

The IKA A 10 is maintenance-free. It is subject only to the natural
wear and tear of components and their statistical failure rate.
When ordering spare parts, please give the manufacturing number
shown on the type plate, the machine type and the name of the
spare part.
Please send in equipment for repair only after it has been cleaned
and is free from any materials which may constitute a health
hazard. Use only cleansing agents which have been approved by
IKA to clean IKA devices.
To remove use:
Dyes isopropyl alcohol
Construction materials water containing tenside / isopropyl alcohol
Cosmetics water containing tenside / isopropyl alcohol
Foodstuffs water containing tenside
Fuels water containing tenside
For materials which are not listed, please request information from
IKA. Wear the proper protective gloves during cleaning of the devi-
ces.
Electrical equipment may not be put into the cleansing agent for
cleaning.
The operator shall consult the manufacturer before using a metho-
de of cleaning or decontamination other than the one wich is re-
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