Thermo Scientific Microm HM355S Benutzerhandbuch Seite 12

Introduction
Description HM355S
Description rotary
Microtome hM355S
12 Operation Manual HM335S
Chapter 2
Introduction
The Thermo Scientific Rotary Microtome Microm HM355S is a uni-
versal heavy duty microtome for specially designed for sophisticated
paraffin and hard sectioning techniques in biology, medicine, industry
and research.
The HM355S sets new ergonomical standards concerning operation
and comfort. The instrument is equipped with a section waste tray with
integrated arm rest. The waste tray is built around and under the knife/
blade carrier for direct collection of section waste.
This model can be equipped with all compatible specimen clamps, knife
and blade holders (see Additional Equipment) of the Rotary Microtome
series. In addition, the stereomicroscope or the large field magnifier can
be adapted.
The HM355S will cut sections in a range from 0,5 µm up to 100 µm.
For the protection of knife and specimen, the instrument retracts the
specimen at the end of the cut. If desired, the function <retraction> can
be turned off. A trimming function with defined steps from 5 µm to
500 µm permits the fine adjustment up to the first cuts and results in
larger section thicknesses when trimming.
The manual rotary movement of the hand wheel of the HM355S is
converted into a vertical movement of the specimen clamping system.
Sectioning is carried out by knives or blades, which must be adjusted
and fixed on the knife/blade carrier.
The electronically controlled motor drive with precision tachometer
generator guarantees an extremely fast adjustment to section force varia-
tions and constant cutting speed. It also ensures optimal section quality
in each field of application.
The motorized coarse feed system allows the continuous specimen for-
ward and backward travel with variable speed settings. This way, speci-
men and knife/blade edge distance can be adjusted quickly.
The operating panel is placed on the left side of the microtome. It can
be removed and used separately, also on the right side of the instrument.
To do this, the operating knobs can be removed and installed on the
other side of the operating panel. The touchpad keyboard is clearly ar-
ranged for easy and safe operation.
The selected section thickness, trimming thickness, section counter, sum
of section thicknesses and remaining travel to the front end
position as well as speed of the cutting movement, the operating mode
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