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Operating the Device
65
Fig. 46:
Pressing the PTFE seal into the cover
The PTFE seal is stiffer than seals made of the standard black material. It may not be possible
to press the seal completely into the groove for the sealing ring by hand. Please proceed as
follows:
Place the grinding jar cover with the pre-assembled seal on the bottom of the grinding jar. Make
sure that the PTFE sealing ring is seated in the groove parallel to the contour. Then tighten the
star grips alternately so that the grinding jar cover lowers evenly (4-7). Avoid tilting or slanting
the grinding jar cover. If necessary, use the opening aid provided. If there is resistance when
turning both star handles, the seal is fully compressed.
Fig. 47:
Checking the PTFE seal whether it is mechanically secured
Subsequently, the cover can be unscrewed again. Check the seal whether it is mechanically
secured: The seal should be approximately flush with the cover surface. The grinding jar cover
is then ready to be used for cryogenic grinding.
6.12.1 Opening the grinding jar
CAUTION
C15.0024
Risks of burns and scalding
Hot grinding jar and/or sample material
−
The sample material and grinding jar can get very hot during the grinding
process.
•
After grinding, always wear protective gloves when handling the
grinding jar.
•
Never open hot grinding jars!
•
Allow grinding jars to cool down to room temperature before
opening them.
Содержание Mixer Mill MM 500 control
Страница 2: ...2 Copyright Copyright by Retsch GmbH Retsch Allee 1 5 42781 Haan Germany ...
Страница 6: ...Notes on the manual 6 ...
Страница 102: ...Device control 102 Fig 79 System settings Page 1 Fig 80 System settings Page 2 SE1 SE2 SE3 SE5 SE6 SE4 ...
Страница 123: ...Disposal 123 ...
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Страница 130: ...Copyright Copyright by Retsch GmbH Retsch Allee 1 5 42781 Haan Germany ...