Retsch PM 200 - Manual (Page 7)

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Retsch GmbH
7
Safety directives summarised, part 2
Grinding bowl filling level
If the filling level of the grinding bowl is too high or too low, the end result will be impaired and the milling set could become
damaged (increased wear and tear).
Stacking 50ml grinding bowls of type "C"
It is not possible to stack 50ml grinding bowls in the PM200.
Heating the grinding bowls
Please take the action necessary - depending on how dangerous the material you are grinding is - to ensure that people are
not exposed to danger.
It is essential to wear protective gloves when removing and opening heated grinding bowls.
Danger of burning hands.
Cleaning the grinding bowls
Do not expose grinding bowls with ceramic inserts to temperature fluctuations during rinsing.
The ceramic inserts can crack if subject to sudden changes of temperature.
Wet grinding with easily inflammable materials
Before deploying easily inflammable materials as milling aids, compile explosion protection documentation in
accordance with articles 118 and 118a of EC directive 89/391/EEC
Start time
Make certain that the grinding bowls have been securely clamped and balanced before letting the machine start unattended.
Even though it is not possible to start the machine without the cover closed, ensure that the cover is closed before letting
the machine start unattended.
Cleaning
Do not clean the PM100/200 with flowing water.
Mortal danger from electric shock
Only use a cloth dampened with water.
Solvents are not permitted.
Maintenance
The easy running of the threaded spindle and the locking sleeve is essential for secure clamping of the grinding bowl
Locking sleeves which do not move downwards solely by spring power cannot properly prevent the threaded spindle from
working loose. The grinding bowls could be hurled out.
The easy running of roller 1 on the locking block is essential for secure closing of the PM100/200 via the automatic closure
mechanism.
If the values D1 and H1 are undershot, operational safety is no longer assured.
The grinding bowls could be hurled out.
Parts subject to wear and tear
The operating instructions do not contain any repair instructions. In the interests of your own safety, repairs should only be
performed by Retsch GmbH, an authorised representative or by Retsch service technicians.