Leica BIOSYSTEMS HistoCore BIOCUT, Инструкция по эксплуатации

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32 Version 1.7, Revision K
Operation
5
5.1.3 Specimen retraction
Fig. 13
The silent specimen retraction offers the
advantage of easy ribboning and avoids contact
to protect both the cut block surface and the
blade during the return stroke of the object head.
It can be switched ON/OFF by the operator.
While trimming, using the rocking mode, it is
recommended to switch the retraction off. When
the retraction is switched on, the specimen is
drawn back approximately 40 µm when the object
head reaches the lower turn point. The retraction
value and the selected section thickness will be
fed when the object head reaches the upper turn
point.
The specimen retraction can be switched off
manually at the back of the instrument (
→
"Fig.
13") , if required, using the flat screw driver
(supplied with the delivery). For turning the
retraction Off, turn the slot into the horizontal
position (OFF). For turning the retraction On, turn
the slot into the vertical position (ON).
Before switching the specimen retraction On and
Off, run the object head to the upper end position
by turning the handwheel.
5.1.4 Mechanical trimming function
Fig. 14
1
2
The instrument is fitted with a mechanical
trimming function. The trimming lever has
3 notching positions (0 = trimming lever not
pressed, 10 µm, 30 µm).
The points (
→
"Fig. 14- 1 ") and (
→
"Fig. 14- 2 ") mark
the two trimming stages:
(
→
"Fig. 14- 1 ") = 10 µm
(
→
"Fig. 14- 2 ") = 30 µm
For activating the trimming function, press the
lever downwards into one of the two notching
positions and keep depressed. After each rotation
of the handwheel, a feed motion of 10 µm or 30 µm
takes place.
After letting go of the lever, it automatically
springs back to its original position (zero position).
The trimming function is thereby deactivated and
the section thickness selected in (
→
P. 31 –
5.1.1 Section thickness setting) will be fed with
each hand wheel turn.