FRITSCH PULVERISETTE 7 classic line - Manual (Page 41)

7 Cleaning
DANGER!
Mains voltage!
– Before beginning with cleaning work, disconnect the
mains plug and protect the device against being unin-
tentionally switched back on!
– Do not allow any liquids to flow into the device.
– Indicate cleaning work with warning signs.
– Put safety equipment back into operation after
cleaning work.
NOTICE!
Cool grinding elements made of agate, sintered corundum,
zirconium oxide and silicon nitride slowly and carefully.
Do not heat agate elements in a microwave under any cir-
cumstances (heating is too fast).
They must never be exposed to thermal shocks as this
could cause irreparable damage to the parts ® They will
burst apart with force.
When cleaning any part of the device, adhere to the guide‐
lines of the Accident Prevention Regulation (BGV A3) ‐ espe‐
cially if the device has been set up in a dusty environment or
if processing grinding stock that produces dust.
7.1 Grinding elements
n Clean the grinding bowl and grinding balls each time after using
them:
Clean them, e.g., under running water using a brush and a commer-
cially available cleaning agent. It is recommended to use a wire
basket or sieve with a narrow mesh width for small grinding balls.
n Take particular care to thoroughly dry tempered steel bowls and
grinding balls with a towel after cleaning; otherwise there is risk of
corrosion.
n Cleaning with solvents is permitted.
n Cleaning with an ultrasonic cleaner is permitted.
n For sterilisation, do not heat the drying cabinet to more than 100 °C.
Cleaning
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