Retsch MM 400 - Cleaning the Outside of the Device; Cleaning the Collecting Tray; Cleaning the Inside; Cleaning the Grinding Jar

Servicing
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10.1.1 Cleaning the outside of the device
 Clean the housing of the device with a damp cloth and, if necessary, a household cleaning
agent. Make sure that no water or cleaning agent gets into the interior of the device.
 Only use neutral cleaning agents. Do not use solvent-based cleaners! Acetone is not
permitted!
Test cleaning products on an inconspicuous spot.
10.1.2 Cleaning the collecting tray
Clean the collecting tray using a damp cloth and a standard household cleaning agent if
necessary.
10.1.3 Cleaning the inside
Clean the inside of the device using a vacuum cleaner or a damp cloth and a standard
household cleaning agent if necessary.
During cleaning, the collecting receptacle underneath the grinding stations can be removed and
cleaned separately.
Ensure that no water or detergent gets inside the device.
10.1.4 Cleaning the grinding jar
All grinding jars, including those with glued-in ceramic inserts, can be cleaned with alcohol,
petroleum ether or normal household washing-up liquid.

Cleaning in a household dishwasher is also possible.
After cleaning, the grinding jars can be dried in the drying cabinet at the following temperatures:
Grinding jar material
Temperature
Hardened steel
Up to 200 °C
Stainless steel
Up to 200 °C
Tungsten carbide(TC)
Up to 150 °C
Zirconium oxide
Up to 120 °C
10.1.5 Cleaning the grinding balls
All grinding balls can be cleaned with alcohol, petroleum ether or normal household washing-up
liquid.

Cleaning in a household dishwasher is also possible.
10.2 Maintenance
The MM 400 is maintenance-free.
No maintenance work needs to be carried out if the device is used as intended.