Motorized Cutting Drive; Specimen Coarse Feed - Thermo Scientific Microm HM355S Operation Manual

Operating Instructions
Display and Key Functions

Motorized Cutting Drive

Specimen Coarse Feed

Operation Manual HM335S
32
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Sectioning can be carried out either manually by turning the hand
wheel or by means of a motorized cutting drive.
e cutting movement can be started by pressing twice the button
START/STOP [7] twice the foot pedal (optional) or knob [C].
e cutting speed can be set continuously from 0 – 450 mm/s with
knob [C].
Note!
e cutting speed refers to the cutting window. For the upward return
travel, a proportionally higher retraction speed is used.
Note!
To adjust the cutting window in relation to a specimen, it can be set
continuously within the maximum values.
Note!
e motorized cutting drive can only be started, when the mechanical hand
wheel brake [4] and the emergency stop are not activated.
Note!
For safety reasons, the electronic brake function is activated automatically
after each stop of the motorized cutting drive.
After changing the specimen or moving the knife or knife carrier, it is
necessary to adjust the specimen to the knife edge again.
be done by means of the specimen coarse feed and the de ned trim-
ming values.
For fast forward and backward moves between specimen and knife edge,
the microtome has a motorized coarse feed system.
• To move the specimen holder forward (to the front), turn the knob
[B] forward i.e. in the direction of user.
e feed speed is controlled by the turn angle. When knob [B] is only
slightly turned forwards, the speed is slow.
turning knob [B] fur ther towards the front.
• To move the specimen holder backwards, turn the knob [B] back-
wards, i.e. in the opposite direction of the user.
Turn angle increase will cause higher return speed.
If knob [B] is kept at a high speed for more than two seconds, the
specimen will automatically move to the rear position.
is can easily
e speed will increase by
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