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5. Operation
Magnet for
holding the
wrench
size 4
20
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).
Fig. 13
5.1.4 Mechanical trimming function
The RM 2235 is fitted with a mechanical trimming function. The trim-
ming lever has 3 notching positions (0,10 µm, 30 µm).
The points (36) mark the two trimming stages:
= 10 µm
= 30 µm
• For activating the trimming function, press the lever downwards
into one of the two notching positions and keep depressed. After
36
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.
The section thickness that has been set is not added to
Fig. 14
the selected trimming value.
If the section thickness that has been set is greater than
the selected trimming value, the section thickness is
fed.
5.1.3 Specimen retraction
The specimen retraction serves for protecting the
knife and the specimen. When the retraction is
switched on, the object is drawn back 200 µm into
the upper end position after the sectioning stroke
during the return movement. Before the feed
motion of the new section thickness, the feed
motion for the retraction value takes place.
The specimen retraction can be switched off
manually at the back of the instrument
required, using the slotted-screwdriver supplied
with the delivery.
Before switching the specimen retraction On and
Off, run the object head to the upper end position
by turning the handwheel.
Instruction manual V 1.1 – 02/2005
(Fig.
13), if
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