Heidolph SilentCrusher S - Manual (Page 29)

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3 Cooling of vessel
For better heat transfer during dispersion process, vessel can be cooled e.g. with ice water
in a beaker. For hight adjustment of beaker use vessel height supports (X).
4 Length of Operation
The drive unit and dispersion tool are not designed for constant operation. In particular, the
PTFE bearing (Q) could be damaged by the high rotational speeds of 75000 rpm.
Maximum length of a dispersion process: 1.5 minutes. The dispersion process
will be cut off automatically after that. The red control light (U) in the base of the
drive unit will turn on.
The device is reset by removing the dispersion tool; the red control light will go out, and
the device is ready to operate again.
The electronics and coil in the drive unit are also monitored by temperature sensors. If the
permissible temperature is exceeded, the drive switches off. The red control light (U) in the
base of the drive unit will blink.