Leica VT1200
Leica VT1200S
Microtome with
Vibrating Blade
Operating Manual
Leica VT1200 and VT1200S
V1.1 English – 05/2007
Always keep this manual with the instrument.
Read carefully before working with the instrument.
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Note
The information, numerical data, notes and value
These are determined only by the contract provi-
sions agreed between ourselves and our custom-
ers.
judgments contained in this manual represent the
current state of scientific knowledge and state-
of-the-art technology as we understand it follow-
ing thorough investigation in this field. We are
under no obligation to update the present manu-
al periodically and on an ongoing basis accord-
ing to the latest technical developments, nor to
provide our customers with additional copies,
updates etc. of this manual.
Leica reserves the right to change technical spec-
ifications, as well as manufacturing processes,
without prior notice. Only in this way is it possible
to continuously improve the technology and man-
ufacturing techniques used in our products.
This document is protected under copyright laws.
All copyrights to this documentation are held by
Leica Microsystems Nussloch GmbH.
To the extent permitted in accordance with the
national legal system as applicable in each indi-
vidual case, we shall not be held liable for erro-
neous statements, drawings, technical illustra-
tions etc. contained in this manual. In particular,
no liability whatsoever is accepted for any finan-
cial loss or consequential damage caused by or
related to compliance with statements or other
information in this manual.
Any reproduction of text and illustrations (or of
any parts thereof) by means of print, photocopy,
microfiche, web cam or other methods – includ-
ing any electronic systems and media – requires
express prior permission in writing by Leica
Microsystems Nussloch GmbH.
For the instrument serial number and year of man-
ufacture, please refer to the nameplate on the
back of the instrument.
Statements, drawings, illustrations and other in-
formation regarding the contents or technical
details of the present manual are not to be
considered warranted characteristics of our
products.
© Leica Microsystems Nussloch GmbH
Published by:
Leica Microsystems Nussloch GmbH
Heidelberger Str. 17 – 19
D-69226 Nussloch
Germany
Phone: +49 6224 143-0
Fax: +49 6224 143-200
E-mail: histo_info@leica-microsystems.com
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Contents
1.
2.
3.
Important Notes .......................................................................................................................... 5
1.1
1.2
1.3
Symbols in the Text and their Meanings ........................................................................................ 5
Qualification of Personnel ................................................................................................................ 5
Intended Use/Improper Use ............................................................................................................. 5
Safety ............................................................................................................................................ 6
2.1
2.2
2.1
General Safety Notes ........................................................................................................................ 6
Warnings ............................................................................................................................................. 6
Transport, Unpacking and Setting up ............................................................................................. 7
Instrument Characteristics....................................................................................................... 8
3.1 Technical Data for the VT1200 ......................................................................................................... 8
3.1.1 Technical Data for the VT1200S....................................................................................................... 9
3.2
3.3
General Overview of the VT1200/VT1200S ................................................................................... 10
VT1200 Control Panel ....................................................................................................................... 12
3.3.1 VT1200S Control Panel .................................................................................................................... 13
4.
5.
Installation................................................................................................................................. 14
4.1 Standard Scope of Delivery for the VT1200 ................................................................................. 14
4.1.1 Standard Scope of Delivery for the VT1200S .............................................................................. 15
4.2
4.3
Packing and Setting up the Instrument ........................................................................................ 16
Before Commissioning the Instrument ......................................................................................... 17
Working with the Instrument ................................................................................................. 18
5.1
5.2
5.3
5.4
5.5
Description of the Typical Application ......................................................................................... 18
Control Elements on the VT1200 Control Panel ........................................................................... 19
Control Element on the Control Panel of the VT1200S ............................................................... 22
Installing the Accessories .............................................................................................................. 32
Routine Daily Maintenance and Switching off the Instrument – VT1200/VT1200S............... 36
6.
7.
Operating the VibroCheck ...................................................................................................... 37
6.1
6.2
Using the VibroCheck with the VT1200 ......................................................................................... 37
Using the VibroCheck with the VT1200S ...................................................................................... 39
Malfunctions: Meanings and Troubleshooting .................................................................. 41
7.1
7.2
Error Messages and Troubleshooting .......................................................................................... 41
Replacing the Main Fuse ................................................................................................................ 46
8.
9.
Cleaning and Maintenance .................................................................................................... 47
8.1
Cleaning the Instrument .................................................................................................................. 47
Ordering Information for Optional Accessories, Consumables and Spare Parts ........ 48
10. EC Declaration of Conformity................................................................................................. 56
11. Warranty and Service.............................................................................................................. 57
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1. Important Notes
1.1 Symbols in the Text and their
Meanings
1.3 Intended Use/Improper Use
The Leica VT1200 and VT1200S are used for sec-
tioning in the fields of medicine, biology and
industry, and are especially designed for section-
ing fixed or unfixed fresh tissue in buffer.
Dangers, warnings and cautions
appear in a gray box and are marked
by a warning triangle
.
The instrument must be installed according to the
directions in this Operating Manual.
Any other use of the instrument is considered
improper.
Useful tips,
i.e. important information for the user,
appear in gray boxes and are marked
by an information symbol
.
Instrument model:
All information provided in this manual applies
only to the VT1200 and VT1200S instruments de-
scribed here.
Numbers in parentheses refer to item
numbers in illustrations or to the illus-
trations themselves.
(5)
(Fig.5)
A nameplate indicating the instrument serial num-
ber is attached to the rear side of the instrument.
1.2 Qualification of Personnel
The Leica VT1200 and the VT1200S may be oper-
ated by trained laboratory personnel only.
All laboratory personnel designated to operate
the Leica instrument must read this Operating
Manual carefully and must be familiar with
all technical features of the instrument before
beginning to operate it.
Fig. 1
Note:
When making inquiries, please make sure that you
have the following product information ready:
•
Instrument model and serial number
Leica VT1200 and VT1200S – Microtome
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2.
Safety
This Operating Manual contains important instructions and information
regarding the operational safety and maintenance of the instrument.
The Operating Manual is an important part of the product, and must be read
carefully prior to startup and use and must always be kept near the instru-
ment.
If additional requirements on accident prevention and environmental pro-
tection apply in the country of operation, this Operating Manual must be
supplemented by appropriate instructions to ensure compliance with such
requirements.
Make sure to read all of the Operating Manual before you work on or oper-
ate the instrument.
2.1 General Safety Notes
These instruments have been built and tested in accordance with the safe-
ty regulations for electrical measuring, control, regulating and laboratory
devices.
In order to maintain this condition and to ensure safe operation, the user
must follow the instructions and warnings contained in this Operating Man-
ual.
For current information about applicable standards, please refer to the CE
Declaration of Conformity on our Internet site:
2.2 Warnings
The safety devices installed in this instrument by the manufacturer only con-
stitute the basis for accident prevention. Operating the instrument safely is,
above all, the responsibility of the owner, as well as the designated person-
nel who operate, service or clean the instrument.
To ensure trouble-free operation of the instrument, make sure to comply
with the following instructions and warnings.
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2. Safety
Caution: Extremely sharp blades pose risk of injury when touched!
Fresh tissue poses risk of infection!
Fire hazard from uncovered magnifier! Cover the magnifier during work breaks!
Proper handling
Always be exceptionally careful when handling the blades!
Do not leave open blades lying around after removal.
Always make sure to handle the blade in a way that will not cause you injury.
All appropriate safety precautions must be met to avoid the risk of infection.
Wearing safety gloves, a mask and safety goggles – in accordance with the "Working with
Substances that Pose a Health Risk" guidelines – is absolutely mandatory.
The instrument may be opened by authorized service personnel only.
Always disconnect the power plug before opening the instrument.
Always switch off the instrument using the power switch and disconnect the power plug before
replacing the fuse. The use of fuses other than those installed at the factory is not permitted.
2.1 Transport, Unpacking and Setting up
•
When unpacking the instrument, compare the parts received with the
parts ordered. If the parts received do not match your order, contact the
sales company responsible for your order immediately.
Please refer to "Technical Data" before connecting the instrument to a
power supply.
•
•
Never connect the instrument to a power socket that does not have a
protective conductor terminal.
The instrument must be set up so that the main power switch on its right side (item 7 in Fig. 14) is
easily accessible at any time.
Because the weight of the instrument is approx. 56 kg, carrying the instrument requires 2 persons
(1 carrying handle per person).
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3.
Instrument Characteristics
3.1 Technical Data for the VT1200
General data:
Cutting frequency ( 10 %) ................................................................................................................. 85 Hz ( 10%)
Amplitude .................................................................................................... from 0 – 3mm, in 0.05mm increments
Cutting speed ( 10 %) ...................................................................................................................... 0.01 – 1.5mm/s
Return speed ( 10 %) ................................................................................................................................. 2.5mm/s
Total vertical specimen stroke ................................................................................................. 20 mm (motorized)
Cutting range............................................................................................................................... 45 mm (adjustable)
Maximum specimen size:
With standard blade holder
.............................................................................................................
Specimen orientation, rotating
33 x 50 mm
360°
...................................................................................................................
0 – 10°
Specimen plate, swiveling
......................................................................................................................
Section thickness adjustment.................................................................................. manual, in 1 μm increments
Ambient conditions:
–
Operating temperature range: .......................................................................................... min. 10 °C max. 35 °C
Relative humidity: ....................................................................................................................................... max. 60 %
–
Storage temperature: ................................................................................................................................... 5 55°C
Storage humidity: ............................................................................................................................................. < 60 %
Height: ........................................................................................................................ up to 2000 m above sea level
Electrical data:
–
Rated voltage range ( 10 %): ....................................................................................................................... 100V 240V
Rated frequency ( 10 %): ..................................................................................................................................... 50/60Hz
Power consumption:................................................................................................................................................... 35 VA
Protection class: .................................................................................................................................................................. I
Power fuses: .................................................................................................................................................... T 1A L 250 V
Pollution degree: ................................................................................................................................................................. 2
Overvoltage category: ........................................................................................................................................................ II
Electrical overload protection: ..................................................................................................................................... yes
Internal current limit for the electronics: .................................................................................................................... yes
Dimensions:
L x W x H: ................................................................................................................................ 600mm x 250mm x 230mm
Height with magnifier support ............................................................................................. 600mm x 250mm x 320mm
Height with microscope: ....................................................................................................... 600mm x 250mm x 490mm
L x W x H control unit (when the bases are folded in):...................................................... 165 mm x 120mm x 72mm
Weight:
Without magnifier support and control unit ............................................................................................................ 56 kg
VT1200 control unit ........................................................................................................................................................ 1 kg
Magnifier support .......................................................................................................................................................... 2 kg
Microscope support with stereomicroscope............................................................................................................ 4 kg
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3. Instrument Characteristics
3.1.1 Technical Data for the VT1200S
General data:
Cutting frequency ( 10 %): ......................................................................................................................... 85 Hz ( 10%)
Amplitude: ............................................................................................................ from 0 – 3mm, in 0.05mm increments
Cutting speed ( 10 %): .............................................................................................................................. 0.01 – 1.5mm/s
Return speed ( 10 %): ......................................................................................... 1.0 – 5mm/s, in 0.5mm/s increments
Total vertical specimen stroke: ......................................................................................................... 20 mm (motorized)
Cutting range: ............................................................................................................................................................. 45 mm
Cutting window: ......................................................................................................................................... 0.5mm – 45mm
Specimen retraction: ............................................................................... 0 – 100μm (adjustable, can be deactivated)
Maximum specimen size:
With standard blade holder: ...................................................................................................................... 33 x 50 mm
Specimen orientation, rotating: ........................................................................................................................... 360°
Specimen plate, swiveling: ............................................................................................................................... 0 – 10°
Section thickness adjustment: ........................................... manual in 1μm increments or automatic max. 1000μm
Ambient conditions:
Operating temperature range: .................................................................................................... min. 10°C – max. 35°C
Relative humidity: ................................................................................................................................................. max. 60%
Storage temperature: ............................................................................................................................................ 5 – 55°C
Storage humidity: ....................................................................................................................................................... < 60%
Height: ........................................................................................................................................................ up to 2000 m NN
Electrical data:
Rated voltage range ( 10 %): ....................................................................................................................... 100V – 240V
Rated frequency ( 10 %): .................................................................................................................................... 50/60 Hz
Power consumption:................................................................................................................................................... 35 VA
Protection class: .................................................................................................................................................................. I
Power fuses: .................................................................................................................................................... T 1A L 250 V
Pollution degree: ................................................................................................................................................................. 2
Overvoltage category: ........................................................................................................................................................ II
Electrical overload protection: ..................................................................................................................................... yes
Internal current limit for the electronics: .................................................................................................................... yes
Dimensions:
L x W x H: ................................................................................................................................ 600mm x 250mm x 230mm
Height with magnifier support: ............................................................................................ 600mm x 250mm x 320mm
Height with microscope: ....................................................................................................... 600mm x 250mm x 490mm
Control unit (when the bases are folded in): ....................................................................... 190mm x 150mm x 72mm
Weight:
Without magnifier support and control unit: ........................................................................................................... 56 kg
VT1200S control unit ...................................................................................................................................................... 1 kg
Magnifier support: ......................................................................................................................................................... 2 kg
Microscope support with stereomicroscope:........................................................................................................... 4 kg
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3.
Instrument Characteristics
3.2 General Overview of the VT1200/VT1200S
Fig. 4, Microscope
Fig. 3, Magnifier
Fiber
optic light
guide
Cold
light source
Fig. 5
Cutting head
Blade holder
Fig. 2, Basic instrument
Fig. 8,
Control
panelm
VT1200Sm
Fig. 7,
Control panel
VT1200
Fig. 6,
Foot switch
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3. Instrument Characteristics
Attachments on dovetail receptacle
Ice bath
VibroCheck
Double-walled buffer tray
Buffer tray
Buffer tray,
plastic
Minichiller
(circulating cooler)
Buffer tray,
metal
Specimen plate
for specimens of
1cm in height
Specimen plate
for specimens of
1cm in height
Fig. 9
for specimens of
2cm in height
for specimens of
2cm in height
Blades for the blade holder
Razor blade
Directional
Directional
Injector blade
Sapphire blade
Cyanoacrylate
adhesive
Cyanoacrylate
adhesive
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3.
Instrument Characteristics
3.3 VT1200 Control Panel
LED display for
blade feed rate and
amplitude
LED for feed rate
LED on, for enabled
amplitude adjustment
1
Setting dial 1, for blade
feed rate and amplitude
Toggles between SPEED
(blade feed rate) and
AMPL (amplitude)
LED display for
section thickness and
section thickness addition
Section thickness
Sets the current specimen
position between 0 (lower)
and 20,000μm (upper) or –
after zero, totals the
Setting dial 2, for
section thickness and
moving the specimen
vertically
2
section thicknesses
Selects the step size
in 1μm, 10μm or 100μm
increments
Pressing this button toggles
between μm and ∑μm
(actively illuminated)
Quickly moves the speci-
men upwards (press the
button until the desired
position is reached)
Resets the section
thickness addition
display ∑μm to zero
Quickly moves the speci-
men downwards (press
once to adjust to the lowest
position)
Immediately starts or stops
the sectioning process
ON/OFF lamp
Press this button
(for approx. 3 sec.) to save a
frequently used feed value
(pressing it more than once
feeds by the saved section
thickness multiple times)
Moves the blade
towards the specimen
Moves the blade away
from the specimen
Caution: Press the button until the desired
position is reached. When the end position is
reached, the LED lights up.
Fig. 10
The Leica VT1200 is a semiautomatic microtome with a vibrating blade. Before each cut,
a manual feed to the desired section thickness must be carried out using the setting dial for
section thickness. The VT1200 does not include an automatic specimen retraction; however,
retraction can be performed manually.
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3. Instrument Characteristics
3.3.1 VT1200S Control Panel
Sets the amplitude.
Select the values
using setting dial 1.
Sets the blade feed rate.
Select the values using
setting dial 1.
Possible in automatic
sectioning mode only.
Select the desired section
thickness for the automatic
feed using setting dial 1.
Setting dial 1, for blade
feed rate (SPEED),
ON/OFF lamp
AMPLitude or section
thickness for automatic
mode (AUTOFEED)
Setting dial 2, for
section thickness and
moving the specimens
vertically
Toggles in and out of the
menu. Memory for 8 para-
meter sets.
Sets the section thickness
addition display ∑μm to "0".
Selects the step size
in 1μm,10μm or 100μm
increments
Interrupts the sectioning
process in automatic mode.
Pressing the button again
reactivates the sectioning
process.
1st cutting window edge,
LED illuminates when the
window edge is set.
Moves the specimen
upwards (as long as the
button is pressed). When
the uppermost position is
reached, the LED lights up.
Starts or stops the sectioning
process. In semiautomatic
mode, the sectioning process
stops immediately; in automatic
Moves the speci-
Moves the Moves the
blade blade away
2nd cutting window edge,
LED illuminates when the
window edge is set.
mode, the sectioning process
is finished completely.
men into the lowest
position, (LED is
illuminated when
the lowest position
is reached)
towards the from the
specimen specimen
Caution: Press the button
until the desired position is
reached. When the end
position is reached, the LED
lights up.
Toggling between single
Fig. 11
stroke (SINGLE) and continu-
ous stroke (CONT) in automatic
mode is possible; in semiauto-
matic mode, only single stroke
(SINGLE) is possible.
Toggles between automatic (AUTO) and
semiautomatic (MAN) sectioning mode
The Leica VT1200S is a fully automatic microtome with a vibrating blade. It can be operated in automatic
as well as semiautomatic sectioning mode.
In semiautomatic sectioning mode, a manual feed to the desired section thickness must be carried out be-
fore each cut. There is no automatic specimen retraction in this mode; however, retraction can be per-
formed manually.
In automatic mode, an automatic feed (AUTO FEED) to the selected section thickness is carried out before
each cut, and the specimen is lowered to the desired retraction value after each cut to prevent the speci-
men surface and the blade from coming into contact while the blade is being retracted.
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4.
Installation
4.1 Standard Scope of Delivery for the VT1200
VT1200 basic instrument .................................................................... 0481 42065
1 control panel ..................................................................................... 0481 43395
1 toolset:
- 1 Allen key, size 3.0 ..................................................................... 0194 04764
- 1 Allen key, size 6.0 ..................................................................... 0222 04141
- 1 cryo-manipulator...................................................................... 0462 28930
- 1 replacement fuse T 1A ............................................................ 6943 01000
1 set of power cables:
- 1 power cable "D" ........................................................................ 0411 13558
- 1 power cable "USA-C-J" ........................................................... 0411 13559
- 1 power cable "UK" ST/BU F-5A ................................................ 0411 27822
1 dust cover (basic instrument), small ............................................. 0212 43742
1 bottle of cyanoacrylate adhesive, contents 10 gr. ..................... 0371 27414
1 Operating Manual for Leica VT1200/VT1200S ............................. 0702 37107
VT1200 configuration........................................................................... 912000001
The above scope of delivery,
plus:
Ice bath, complete .............................................................................. 0481 42010
Buffer tray, (metal) complete ............................................................ 0481 42084
VT blades (10x10 Gillette) .................................................................. 0205 42056
When ordering additional accessories, compare the parts received
with the parts ordered. If the parts received do not match your
order, contact the sales company responsible for your order imme-
diately.
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4. Installation
4.1.1 Standard Scope of Delivery for the VT1200S
VT1200S basic instrument ................................................................. 0481 42066
1 control panel ..................................................................................... 0481 43396
1 toolset:
- 1 Allen key, size 3.0 ..................................................................... 0194 04764
- 1 Allen key, size 6.0 ..................................................................... 0222 04141
- 1 cryo-manipulator...................................................................... 0462 28930
- 1 replacement fuse T 1A ............................................................ 6943 01000
1 set of power cables:
- 1 power cable "D" ........................................................................ 0411 13558
- 1 power cable "USA-C-J" ........................................................... 0411 13559
- 1 power cable "UK" ST/BU F-5A ................................................ 0411 27822
1 dust cover (basic instrument), small ............................................. 0212 43742
1 bottle of cyanoacrylate adhesive, contents 10 gr. ..................... 0371 27414
1 Operating Manual for Leica VT1200/VT1200S ............................. 0702 37107
VT1200S configuration........................................................................ 91200S001
The above scope of delivery,
plus:
Ice bath, complete .............................................................................. 0481 42010
Buffer tray, (metal) complete ............................................................ 0481 42084
VT blades (10x10 Gillette) .................................................................. 0205 42056
When ordering additional accessories, compare the parts received
with the parts ordered. If the parts received do not match your
order, contact the sales company responsible for your order imme-
diately.
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4.
Installation
4.2 Packing and Setting up the Instrument
Ensure that the instrument is standing on a work surface that is as free
of vibrations as possible.
Before each transport, the handles must be screwed onto the instrument using the
provided screws (see p. 17, Fig. 13). Check to ensure that the handles are firmly in
place and will hold reliably!
Packing the instrument
1. Have 2 people grab the instrument by the transport handles (1), place it
on the wooden pallet and screw it to the pallet using the 4 size 6 hexa-
gon-head screws (2).
1
1
2. Pull the transparent protective hood (3) over the instrument. Place the
wooden box (4) on the baseplate. Insert the inner carton ring (5).
3. Insert the accessory box (6 – contains accessories) and fill it with pack-
ing material (7).
2
2
4. Attach the cover (8) and screw it into place using 8 Phillips screws (9).
5
3
➜
➜
4
8
6
7
9
9
➜
➜
Fig. 12
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4. Installation
4.3 Before Commissioning the Instrument
Once the instrument is in its final location, unscrew
the transport handles (1) from the instrument us-
ing the size 6 Allen key provided and store them,
along with the screws, in a safe place.
1
1
Fig. 13
1. Set the power switch (7) on the right side of
the instrument to OFF (❍).
2
2. Make sure that the power cable connection
in the power socket (2) on the right side of the
instrument is correct.
7 (AN)
3. Connect the control panel to the socket (3).
4. Install the ice bath (4).
5. Install the buffer tray (5).
6. Install any optional accessories, such as the
magnifier, microscope, foot switch, etc. ac-
cording to p. 49.
7. Use the power switch (7) to switch on the in-
strument.
4
To make it easier to insert the speci-
men, adjust the specimen receptacle
to its lowest position, and adjust the
blade holder to its rearmost position
during the first reference run.
5
3
6
Fig. 14
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5.
Working with the Instrument
5.1 Description of the Typical Application
The Leica VT1200 / VT1200S is a microtome with a vibrating blade and is
predominately used for sectioning fixed and unfixed specimens during neu-
rological research.
•
•
To simplify the process of inserting the spec-
Insert the hose for gassing the buffer into the
hose clamp.
imen, you can quickly move the specimen
receptacle to the lowest position by pressing
the DOWN button.
•
Use the UP button to lift the specimen to
the sectioning level of the blade quickly. Fine-
adjusting the blade-to-specimen proximity can
be performed using the desired step size 1, 10
or 100μm.
To prepare high-quality sections, especially
for unfixed tissue, Leica suggests using the
optional VibroCheck measuring instrument to
determine the height amplitude of the blade
after each blade change, and then to minimize
it using the setting screw on the blade holder.
•
•
Advance the blade toward the specimen us-
ing the "Blade forward" key.
After sectioning the specimen, use the setting
dial to feed to the desired section thickness
using the selected step size (1, 10 or 100μm).
This raises the specimen receptacle to the
desired value.
To perform the aforementioned process, in-
stall the VibroCheck instrument (see p. 36 for
the VT1200 or p. 38 for the VT1200S), install
the blade and adjust the clearance angle to
the desired position. Then take the measure-
ment and make the appropriate adjustments
to the placement of the blade holder.
•
Start the sectioning process by pressing the
RUN/STOP key. The process can be stopped
again by pressing this key after the cut has
been completed. Use the "Blade back" key
to move the blade in front of the specimen.
Select the section thickness for the next cut
and start the sectioning process again.
Remove the VibroCheck according to the in-
structions, and turn the blade 90° toward the
top to ensure that the ice bath and buffer tray
can be installed safely.
•
Insert the buffer tray into the ice bath and
cover it with the lid. Fill the ice bath with
crushed ice.
•
After completing the sectioning process,
remove the blade, dispose of the specimen
receptacle by pushing the DOWN key into its
lowest position, and unclamp, empty and clean
out the ice bath and buffer tray.
•
•
•
Remove the cover and fill the buffer tray with
pre-cooled physiological buffer.
Push the ice bath and buffer tray onto the
dovetail guide and clamp them down.
Use cyanoacrylate adhesive to adhere the
specimen to the specimen plate and use a
manipulator to place it in the buffer tray.
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5. Working with the Instrument
5.2 Control Elements on the VT1200 Control Panel
Caution: To practice the key functions, always make sure there are
no blades installed! Do not install the blades until you are familiar
with all of the key functions.
When the instrument is switched on, to make it easier to insert a specimen,
the specimen receptacle automatically moves into the lowest position
(the LED in the DOWN key lights up) and the blade holder moves into the
rearmost position (the LED in "Blade away" from the specimen lights up).
Switch on the
instrument.
1 = on 0 = off
The last parameters used before the instrument was switched off are called
up again: blade feed rate (SPEED), selected amplitude (AMPL) and the sec-
tion thickness that was saved using the MEMO key.
The LED illumination is switched on automatically. You can switch it off using
the ON/OFF key (lamp symbol).
5.2.1 Moving the Specimen Receptacle Vertically
When the DOWN key is pressed, the specimen receptacle automatically
moves quickly into the lowest position. (The LED in the DOWN key lights up
when the lower end position is reached.) The ∑μm display is set to "0". If the
DOWN key is pressed a second time while the specimen receptacle is mov-
ing downwards, the specimen receptacle comes to a stop. The current
position appears on the ∑μm display (lowest position = 0). The ∑μm display
does not change while the specimen receptacle is in motion.
When the UP key is pressed and held, the specimen receptacle moves quickly
upwards into the desired position. After the UP key has been released, the
current position of the specimen receptacle appears on the ∑μm display.
If the specimen receptacle reaches the upper end position, the LED in the
UP key lights up (uppermost position = 20,000μm). The ∑μm display does
not change while the specimen receptacle is in motion.
You can reset the display for the current position of the specimen holder to
zero at any point using the CLEAR/∑μm key. The section thicknesses are
then added in the ∑μm display. Switch to μm by pressing the μm/∑μm key.
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5. Working with the Instrument
5.2.2 Fine-adjusting the Blade-to-Specimen proximity and Feeding to the Section Thickness
The rotary knob 2 for moving the specimen receptacle vertically can be used
both for fine-adjusting the blade-to-specimen proximity and for adjusting
the desired section thicknesses. The step sizes 1, 10 or 100μm can be se-
lected by pressing the STEP SIZE key.
Turning the setting dial clockwise carries out the desired feed; turning the
setting dial counterclockwise lowers the specimen (minus sign). The value
appears in the lower display when "μm" is selected. After each sectioning
process has been completed, the μm display is set to zero.
Save a commonly used section thickness by adjusting the setting dial for
the section thickness and pressing the MEMO key for 3 seconds. An audi-
ble signal confirms that the value has been accepted.
Feed to the saved value by quickly pressing the MEMO key. Pressing the
MEMO multiple times feeds to the value multiple times.
Neither negative values nor a section thickness of over 1000μm
are permitted. If an attempt is made to save impermissible values,
an audible warning signal sounds three times and the last (permis-
sible) value is retained.
5.2.3 Blade Method
The "Blade forward" and "Blade back" keys have to be held down until the
desired position is reached. The blade feed rate is 2.5 mm/s. When each
end point has been reached, the corresponding LED lights up in the key.
Blade
forward
back
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5. Working with the Instrument
5.2.4 Selecting the Sectioning Parameters
SPEED: Blade feed rate – upper display – LED mm/s. The desired blade feed
rate can be adjusted from 0.01 – 1.5 mm/s using rotary knob 1:
0.01 – 0.1 in 0. 01mm/s increments
0.10 – 0.5 in 0. 02mm/s increments
0.50 – 1.5 in 0. 10mm/s increments
AMPL: upper display – LED mm: displays the amplitude in mm:
from 0 - 3 mm in 0.05mm increments
Starts the sectioning process
Starts the sectioning process using the selected amplitude and blade feed
rate. You can start the sectioning process by pressing the RUN/STOP key a
second time, or you can stop the process immediately by pressing the "Blade
back" or "Blade forward" key. The μm display is then reset to "0".
To start a new sectioning process, use the "Blade back" key to move the
blade to the beginning of the specimen, set the desired section thickness
and restart the sectioning process.
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5.
Working with the Instrument
5.3 Control Element on the Control Panel of the VT1200S
The Leica VT1200S is a fully automatic microtome with a vibrating blade
that can be operated in semiautomatic or automatic sectioning mode.
Key/setting dial
semiautomatic sectioning mode
automatic sectioning mode
When the instrument is switched
on, to make it easier to insert a
specimen, the specimen recepta-
cle automatically moves into the
lowest position (the LED in the
DOWN key lights up) and the blade
holder moves into the rearmost po-
sition (the LED in "Blade away" from
the specimen lights up).
ditto
Switch on the
instrument.
1 = on 0 = off
If semiautomatic sectioning mode
has been selected before the unit
is switched off, the following saved
parameters are called up again
once the unit is switched back on:
•
•
•
Blade feed rate (SPEED)
Selected amplitude (AMPL)
Saved section thickness
(AUTO FEED)
•
•
Blade feed rate (SPEED)
Selected amplitude (AMPL)
The LED illumination is switched on
automatically. You can switch it off
using the ON/OFF key.
ditto
The LED MAN is active.
semiautomatic sectioning mode is
enabled.
The LED AUTO is active.
The automatic sectioning mode is
enabled.
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5. Working with the Instrument
Key/setting dial
semiautomatic sectioning mode
automatic sectioning mode
In semiautomatic sectioning mode,
before each cut, a manual feed to
the desired section thickness must
be carried out using the setting dial
for section thickness.
In automatic mode, the selected
section thickness feed (AUTO
FEED) is carried out along the 1st
selected cutting window edge
automatically before each cut. To
prevent the specimen surface and
the blade from coming into contact
while the blade is being retracted,
the specimen is lowered by the
desired retraction value along the
2nd cutting window edge after
each complete cut.
There is no automatic specimen
retraction in this mode; however,
retraction can be performed man-
ually.
Toggling from AUTO The following key functions are dis-
abled in semiautomatic mode:
to MAN
•
•
Setting cutting window edges
Selecting the continuous stroke
(CONT)
•
•
Selecting the section thickness
for the automatic feed (AUTO
FEED)
PAUSE
An audible warning signal sounds
when these keys are pressed.
The following functions keys be-
come enabled again in automatic
mode:
Toggling from MAN to
AUTO
•
Cutting window edges that have
already been set
•
Section thickness (AUTO FEED)
and continuous stroke (CONT)
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5. Working with the Instrument
Key/setting dial
semiautomatic sectioning mode
automatic sectioning mode
The blade feed rate can be adjusted
from 0.01 – 1.5 mm/s:
ditto
1
0.01
0.10
0.50
–
–
–
0.1 in 0.01 mmm/s increments,
0.5 in 0.02 mmm/s increments,
1.5 in 0.10 mmm/s increments.
Adjusting the amplitude from
3 mm in 0.05 mm increments
ditto
1
0
–
1
Not possible.
Setting the section thickness for
automatic mode – max. 1000μm.
Display for the current specimen ditto
holder position (lowest position =
0μm, uppermost position = 20,000μm.)
You can reset the display to zero at
any point using the CLEAR/∑μm key.
The section thicknesses are then
added in the ∑μm display.
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5. Working with the Instrument
automatic sectioning mode
ditto
Key/setting dial
semiautomatic sectioning mode
The rotary knob for moving the
specimen receptacle vertically can
be used for fine-adjusting the
blade-to-specimen proximity. Turn-
ing the setting dial clockwise
moves the specimen up into the
desired proximity; turning the set-
ting dial counterclockwise lowers
the specimen (minus sign).
2
The step sizes 1, 10 or 100μm can
be selected by pressing the STEP
SIZE key.
After the setting dial is turned
clockwise or counter clockwise,
the specimen receptacle position is
updated in the ∑μm display.
In semiautomatic mode, the de-
sired section thickness is selected
using the setting dial.
Not possible.
The selected section thickness
appears in the μm display and the
current specimen receptacle posi-
tion appears in the ∑μm display.
After each sectioning process has
been completed, the μm display is
set to "0".
When the DOWN key is pressed,
the specimen receptacle automat-
ically moves quickly into the low-
est position. (The LED in the DOWN
key lights up when the lower end
position is reached.) The ∑μm dis-
play is set to "0".
ditto
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5. Working with the Instrument
Key/setting dial
semiautomatic sectioning mode
automatic sectioning mode
If the DOWN key is pressed a sec-
ond time while the specimen
receptacle is moving downwards,
the specimen receptacle comes to
a stop and the current position ap-
pears on the ∑μm display (lowest
position = 0, uppermost position =
20,000μm). The ∑μm display does
not change while the specimen
receptacle is in motion.
ditto
When the UP key is pressed and
held down, the specimen recepta-
cle moves quickly upwards into the
desired position. After the UP key
has been released, the current po-
sition of the specimen receptacle
appears on the ∑μm display. If the
specimen receptacle reaches the
upper end position, the LED in the
UP key lights up (uppermost posi-
tion = 20,000μm). The ∑μm display
does not change while the speci-
men receptacle is in motion.
ditto
The "Blade forward" and "Blade
back" keys have to be held down
until the desired position is
reached. The blade feed rate can
be set in the menu: 1 – 5 mm/s in
0.5 mm/s increments. Each time an
end point is reached, the corre-
sponding LED lights up in the key.
ditto
Blade forward
Blade back
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5. Working with the Instrument
Key/setting dial
semiautomatic sectioning mode
automatic sectioning mode
General information Not possible.
about the cutting win-
dow
The horizontal cutting path can be
reduced to the specimen size. The
two cutting window edges can be
adjusted and changed indepen-
dently. Holding the key down for a
longer duration (audible warning
signal) sets the beginning or end
(depending on the key) of the cut-
ting window to the maximum val-
ue. Smallest possible cutting win-
dow: 0.5mm. If a window smaller
than 0.5mm is set or the user re-
verses the beginning and end, the
last entered value is accepted and
the previous value is set to the max-
imum value. The cutting window is
not saved when the instrument is
switched off; however, it is retained
when you switch from automatic
mode (AUTO) to semiautomatic
mode (MAN).
Activated cutting window edges can be deactivated
by pressing the corresponding key for approx. three
seconds.
Not possible.
Not possible.
Advance the blade toward the
specimen using the "Blade for-
ward" key. Press the "1st cutting
window edge" key until the LED in
the key lights up.
Advance the blade to the end of the
specimen using the "Blade for-
ward" key and press "2nd cutting
window edge" until the LED in the
key lights up.
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5. Working with the Instrument
Key/setting dial
semiautomatic sectioning mode
automatic sectioning mode
Only single stroke (SINGLE) is pos-
sible. If an attempt is made to switch
to continuous stroke (CONT), an
audible warning signal sounds.
Toggles between single (SINGLE)
and continuous stroke (CONT).
The corresponding LED lights up to
indicate the current selection.
Starts the sectioning process using
the selected amplitude (AMPL) and
blade feed rate (SPEED). Pressing
the RUN/STOP key a second time
stops the sectioning process im-
mediately.
Starts the sectioning process us-
ing the selected section thickness
(AUTO FEED) amplitude (AMPL)
and the blade feed rate (SPEED).
If single stroke (SINGLE) is select-
ed, only one sectioning process is
carried out. – If continuous stroke
(CONT) is selected, a continuous
sectioning process takes place.
Pressing the RUN/STOP key a sec-
ond time stops the sectioning pro-
cess that is in progress. The blade
moves to the 1st cutting window
edge and stays there.
The μm display is then reset to "0".
Not possible.
The programmed section thickness
(AUTO FEED) appears in the μm dis-
play continuously.
A sectioning process in progress
can be interrupted immediately by
pressing the PAUSE key and re-
started by pressing the PAUSE key
again. If PAUSE has been pressed
to interrupt a sectioning process,
pressing the RUN/STOP key or the
"Blade forward" or "Blade back"
keys discontinues the sectioning
process.
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5. Working with the Instrument
Key/setting dial
semiautomatic sectioning mode
automatic sectioning mode
Press the MENU key.
8 sets of user parameters can be
saved;
ditto
1
2
Current user selection – User 1:
turn rotary knob 2 clockwise, then
press Menu again.
The blade feed rate (SPEED) can
be set to 0 – 1.5 mm/s using rotary
knob 1.
ditto
ditto
1
2
1
➞ Rotary knob 2
The amplitude (AMPL) can be set
to 0 – 3 mm using rotary knob 1.
2
1
➞ Rotary knob 2
➞ Rotary knob 2
The automatic section thickness
feed (AUTO FEED) can be adjusted
using predefined step sizes (1, 10
or 100μm) by max. 1000μm using
rotary knob 1.
The automatic section thickness
feed (AUTO FEED) can be adjusted
using predefined step sizes (1, 10
or 100μm) by max. 1000μm using
rotary knob 1.
2
The values can be selected; however, automatic feed is not possible in semiautomatic sec-
tioning mode. If the AUTO FEED key is pressed, one feed motion takes place according to the
value programmed in automatic mode. If the key is pressed more than once, several feed mo-
tions take place.
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5. Working with the Instrument
Key/setting dial
semiautomatic sectioning mode
automatic sectioning mode
➞ Rotary knob 2
➞ Rotary knob 2
1
Mode: Choice between AUTO and
MAN with rotary knob 1; for
semiautomatic sectioning mode,
MAN must be selected.
Mode: Choice between AUTO and
MAN with rotary knob 1; for the
automatic sectioning mode, AUTO
must be selected.
2
1
2
➞ Rotary knob 2
➞ Rotary knob 2
Stroke type (CUT) – only single
stroke (SINGLE) can be selected
with rotary knob 1. If continuous
stroke (CONT) is selected, an audi-
ble warning signal sounds.
Stroke type (CUT): Choice between
single stroke (SINGLE) and contin-
uous stroke (CONT) with rotary
knob 1.
➞ Rotary knob 2
Specimen retraction (RETRACT)
cannot be set.
➞ Rotary knob 2
1
2
The specimen retraction (RETRACT)
can be set from 0 – 100μm in 10μm
increments with rotary knob 1.
Value
cannot
be
changed. NO automat-
ic retraction is possi-
ble in semiautomatic
sectioning mode.
ditto
➞ Rotary knob 2
1
2
The LED illumination can be adjust-
ed to 5 different levels of brightness
using rotary knob 1.
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5. Working with the Instrument
automatic sectioning mode
ditto
Key/setting dial
semiautomatic sectioning mode
➞ Rotary knob 2
1
The feed rate (FOR/REV) for the
"Blade forward" and the "Blade
back" keys can be set between 1
and 5 mm/s in 0.5 mm/s increments
with rotary knob 1.
2
ditto
➞ Rotary knob 2
1
2
Switches the vibration movement
(FOR/VIB) of the "Blade forward"
key either on or off using rotary
knob 1.
ditto
➞ Rotary knob 2
Key acknowledgment (BEEP) on or
off with rotary knob 1.
1
2
Save the parameter and leave by
pressing the menu MENU key.
ditto
Leaving the menu and
saving the parameter
is possible at any point
in the menu.
If you want to call up the parameters of a certain user (for example, user 3), press the Menu
key and select user 3. Then confirm by pressing the Menu key 2x. The parameters stored under
user3 are now enabled.
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5. Working with the Instrument
5.4 Installing the Accessories
5.4.1 Installing the Ice Bath and Buffer Tray
•
A lever (2), which needs to be pushed forward,
is located on the underside of the ice bath (1).
•
Now push the tray onto the dovetail holder (3)
from the front. Clamp it down by pushing the
lever (2, Fig. 28) towards the rear.
3
The ice bath can be placed on the
stage separately for preparation.
2
1
•
Push the buffer tray (5) in as far as it will go
(small pins (4) guide it at the side and front).
It is held in place by three strong magnets,
which are integrated into the bottom of the
buffer tray.
Ice bath
Underside
2
4
Fig. 15
•
•
•
Cover the buffer tray (5) with a Plexiglas lid (6).
Now fill the ice bath with crushed ice.
Cover the buffer tray and fill it with cooled
buffer solution.
6
To remove the buffer tray from the ice
bath, pull on the rounded edges care-
fully (7). They help to remove the tray,
as they are not magnetic.
5
7
Fig. 16
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5. Working with the Instrument
5.4.2 Installing the Double-walled Buffer Tray
Clamps for holding the gassing hose for the buffer
in the proper position can be added to the double-
walled buffer tray. The specimen can be oriented
using the magnetic specimen holder before sec-
tioning.
When using the double-walled buffer
tray, the flow cooler must be installed
according to the assembly instruc-
tions prior to working with speci-
mens.
Fig. 17
5.4.3 Preparing a Specimen
•
•
•
Fix the specimen to the specimen plate using
the cyanoacrylate (included in the standard
scope of delivery).
6
Screw the manipulator (6) onto the specimen
plate, place it in the buffer tray and adjust it to
the desired position.
The specimen plate is held in place in the buff-
er tray magnetically.
Fig. 18
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5. Working with the Instrument
5.4.4 Installing and Removing the Blade Holder
Always remove the blade BEFORE in-
stalling or removing the blade holder!
For quality and service reasons, the
blade holder (7) is available as a com-
plete unit only.
•
Before the blade holder can be replaced, it
must be brought into a 45° inclined position.
7
8
To do so, insert the size 3 Allen key sideways
into the blade holder through the hole (8) and
rotate it 45° clockwise.
Turning the screw (9) counterclockwise
releases the blade holder, allowing it to be
replaced.
9
•
The installation is carried out in reverse order.
Cleaning the blade holder
To clean the blade holder after removal, spray it
with alcohol. It can then be wiped down with a
piece of cellulose and placed on a cellulose tow-
el to dry completely.
7
Fig. 19
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5. Working with the Instrument
5.4.5 Inserting the Blade
The blade holder can be used for ra-
zor blades, injector blades and sap-
phire blades (universal blade holder).
•
Insert a size 3 Allen key sideways into the
blade holder through the hole (8) and rotate it
90° clockwise.
8
Clamp the blade as follows:
•
Insert the provided size 3 Allen key from the
top through the opening (10) into the blade
holder (11) and open the blade holder (BH).
Hold the entire razor blade (9) (not separated)
on the left and right with both hands and in-
sert it into the blade holder – Hook in the blade
over bottom pressure plate (see Fig. 21).
Fig. 20
•
10
•
Clamp down the BH by turning the size 3 Allen
key clockwise until hand-tight.
The clamping screw (11) on the blade
holder must not be tightened too much!
11
9
Now return the blade holder to the cutting position.
Fig. 21
•
To do so, insert a size 3 Allen key sideways
into the blade holder through the hole (8) and
rotate approx. 90° counterclockwise.
For more information about adjusting the clear-
ance angle, see Fig. 22.
5.4.6 Adjusting the Clearance Angle
•
Insert a size 3 Allen key sideways into the
blade holder through the hole (8) and rotate it
to the desired clearance angle mark.
12 – 15°
13 – 18°
14 – 21°
For 15°, the effective clearance angle
is "0".
The most commonly used setting is
18° (13).
Fig. 22
12
13
14
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5. Working with the Instrument
5.5 Routine Daily Maintenance and Switching off the Instrument – VT1200/VT1200S
After all daily procedures have been finished, perform the following:
•
•
•
•
Switch off the main switch on the side of the instrument.
Place the magnifier cover on the magnifier.
Remove the blade from the blade holder and dispose of it safely.
Pull the ice bath and buffer tray off of the dovetail guide and place them
on the stage.
•
Remove and empty out the buffer tray. Dispose of the contents of the
buffer tray properly.
•
•
Remove the specimen plate and lay it flat on the stage.
Remove the specimen using a single-sided blade and remove any
cyanoacrylate adhesive residue from the specimen plate.
Caution! The contents of the ice bath can become contaminated if
buffer solution is spilled over it.
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6. Operating the VibroCheck
6.1 Using the VibroCheck with the VT1200
The following instructions must be adhered to exactly. Noncompliance can cause serious
damage to the instrument.
We recommend using the VibroCheck after each blade change to check
the optimum position of the blade and minimize the vertical vibration.
Prior to assembly, the dovetail guide (3) is brought
down to the lowest position using the DOWN key!
Foot switch for VT
1. The user installs the VibroCheck: the VC is
pushed along the dovetail guide (3) past the
mark on the base plate of the instrument (rear
(2) – VibroCheck
stop) and clamped firmly using the lever (15).
Insert the blade and clamp tightly. Return the
blade to the cutting position (see Fig. 20).
Control panel for VT
2. Plug the connecting plug of the VibroCheck
(VC) into the socket (2) on the left side panel.
Fig. 23
Short red flash of LED on VC --> control panel
acknowledges VC. LED then remains red. LED
in DOWN key flashes green.
3. The user presses the DOWN key. The VC
moves to the bottom position, after that the
3
blade moves to the rearmost position – the LED
in the RUN/STOP key flashes. Short red flash
of LED on VC --> it then remains red.
Fig. 24
4. The user presses the RUN/STOP key: the blade
first moves towards the front (into the posi-
tion exactly above the VibroCheck); the VC
then moves into a position in which the blade
partly covers the light barrier. (If the VC does
not receive any signal via the light barrier, the
15
operation is canceled and DOWN is enabled.)
LED on VC flashes green – RUN/STOP flashes
yellow.
Fig. 25
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6. Operating the VibroCheck
When LED on VC is green and LED in RUN/
STOP is yellow, the blade starts to vibrate with
the amplitude set. Speed = 0, amplitude can
be changed at any time.
1
On the (5-digit) display, the deviation in height
amplitude is shown in μm (e.g. 0.9μm). This val-
ue can be either positive or negative. The dis-
play can be switched using the key μm/∑μm.
Then a number appears (e.g. 0.4). This means
clockwise rotation by 0.4 turns ("+" see 18a) –
(Neg. operational sign means counterclockwise
rotation – see 18a). If the value is "0", no improve-
ment of the height amplitude is possible.
5. Press the STOP key. Using a size 3 Allen key,
unscrew the clamping screw (16) only slightly,
pull off the cap (17) by pulling it upwards (keep
it in a safe place) and turn the adjusting screw
(18) by the corresponding value (here, 0.4 turns)
clockwise (in the "+" direction, 18a) using a size
3 Allen key. Tighten the clamping screw (16)
clockwise.
2
Fig. 26
17
18a
18
6. Press the RUN key, check the value, repeat
steps 5 – 7 if necessary.
7. If the measured value is accepted, press
DOWN (flashes green). VC moves to lowest
position – blade is moved to the rear. LED on
VC illuminates red again (LED on RUN/STOP
is off).
18
8. The instrument now expects the VibroCheck
to be removed. To do so, disconnect the USB
plug connection of the VC to the basic instru-
ment and pull the VC off of the dovetail guide.
LED in DOWN key continues to flash – wait
until LED in DOWN button goes out.
Fig. 27
16
If the display shows ∑μm (2) "0" (opti-
mal) and the value in μm (1) is unac-
ceptably high, the blade must be
replaced.
The normal operating status is now restored.
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6. Operating the VibroCheck
6.2 Using the VibroCheck with the VT1200S
The following instructions must be adhered to exactly. Noncompliance can cause serious
damage to the instrument.
We recommend using the VibroCheck after each blade change for check-
ing the optimum position of the blade and important sectioning parameters.
Prior to assembly, the dovetail guide (3) is brought
down to the lowest position using the DOWN key!
Foot switch for VT
VibroCheck
1. The user installs the VibroCheck: the VC is
pushed along the dovetail guide (3) past the
mark on the base plate of the instrument (rear
stop) and clamped firmly using the lever (15).
Insert the blade and clamp tightly. Return the
blade to the cutting position (see Fig. 19).
2. Plug the connecting plug of the VibroCheck
(VC) into the corresponding socket on the left
side panel. The LED on the VC quickly flashes
red --> then it remains red. The control panel
detects the VC (see Fig. 30). The LED in the
DOWN key flashes green.
Control panel for VT
Fig. 28
3
15
3. The user presses the DOWN key. The VC
moves to the bottom position, in addition to that
the blade moves to the rearmost position – the
LED in the RUN/STOP key flashes. Short red
flash of LED on VC --> it then remains red.
4. The user presses the RUN/STOP key: the blade
first moves towards the front (into the posi-
tion exactly above the VibroCheck); the VC
then moves into a position in which the blade
partly covers the light barrier. LED on VC flash-
es green – RUN/STOP flashes yellow. The con-
trol panel displays: "VIBRO search" (see
Fig. 30). A search can last up to 1 minute. When
LED on VC is green and LED in RUN/STOP is
yellow, the blade starts to vibrate.
Fig. 29
Fig. 30
Fig. 31
Leica VT1200 and VT1200S – Microtome
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6. Operating the VibroCheck
The deviation of the height amplitude is shown
on the display in μm (1). This value can be ei-
ther positive or negative. A number (e.g. -0.3)
appears in the ∑μm display (2). This means a
counterclockwise rotation of 0.3 (as "-") and
reduces the height amplitude to a minimum.
(If there is no operation sign, the rotation is
in a clockwise direction "+".) If the value is "0",
no improvement of the height amplitude is pos-
sible.
1
2
Fig. 32
17
18a
5. Press the STOP key. Unscrew the clamping
screw (16) only slightly using the size 3 Allen
key, pull off the cap (17) by pulling it upwards
(keep it in a safe place) and turn the adjusting
screw (18) by 0.3 turns counterclockwise "-",
18a) using the size 3 Allen key. Tighten the
clamping screw (16) clockwise.
18
6. Press the RUN key, check the value, repeat
steps 5 – 7 if necessary.
If the display shows ∑μm (2) "0" (opti-
mal) and the value in μm (1) is unac-
ceptably high, the blade must be
replaced.
18
7. If the measured value is accepted, press
DOWN (flashes green). VC moves to lowest
position – blade is moved to the rear. Control
panel for the VT displays: "VIBRO END". The
LED on the VC is again illuminated in red.
8. The instrument now expects the VibroCheck
to be removed. To do so, disconnect the USB
plug connection of the VC to the basic instru-
ment and pull the VC off of the dovetail guide.
LED in DOWN key continues to flash – wait
until LED in DOWN button goes out.
Fig. 33
16
The normal operating status is now restored.
Fig. 34
Operating Manual V1.1 – 05/2007
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7. Malfunctions: Meanings and Troubleshooting
7.1 Error Messages and Troubleshooting
Error/INF No.
Error
Troubleshooting
Remark
Error 01
- Wrong control panel
(VT1200 or VT1200S)
- Use the correct control
panel for the instrument.
- Using an incorrect
control panel does not
harm the instrument,
but no functions what-
soever are available.
Error 21
- Head does not swing
into place.
1. Check to see if an ampli-
tude value has been se-
lected.
2. Try to make the head
swing into place by gently
striking it with your hand.
3. If head does not swing
into place, inform service.
Error 22
Error 23
- Timeout while initializ-
ing the x-axis.
- Inform service!
- Inform service!
- DC motor of x-axis does
not rotate (during ini-
tialization or in normal
operation)
Error 24
Error 25
- "X-Start" limit switch is
not reached.
- Inform service!
- Inform service!
- "X-Start" limit switch
cannot be moved away
from.
Error 26
- "X-Stop" limit switch is
not reached.
- Inform service!
After all error messages, the instrument MUST be switched off, then on
again using the main switch.
Leica VT1200/VT1200S – Microtome
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7. Malfunctions: Meanings and Troubleshooting
Error/INF No.
Error
Troubleshooting
Remark
- "Bottom" limit switch
of the Z-axis is not
- Check whether an obsta-
cle is blocking the travel
path of the ice bath.
Error 27
reached during initial-
ization or operation.
Remove the obstacle.
If there is no obstacle,
and the error message
persists after the in-
strument is switched on
again: inform service.
Error 28
- The "top" limit switch
of the Z-axis is not
reached.
- Check whether an obsta-
cle is blocking the travel
path of the ice bath.
Remove the obstacle.
If there is no obstacle,
and the error message
persists after the in-
strument is switched on
again: inform service.
- Both X sensors activat-
ed (during initialization
or in normal operation)
- Inform service!
- Inform service!
Error 31
Error 32
- Both Z sensors activat-
ed (during initialization
or in normal operation)
After all error messages, the instrument MUST be switched off, then on
again using the main switch.
Operating Manual V1.0 – 10/2006
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7. Malfunctions: Meanings and Troubleshooting
Error/INF No.
Error
Troubleshooting
Remark
- Control board (C1/back
panel) and keyboard
(C2) have different
- It is possible that due to
different software ver-
sions, some or all func-
tions of the instrument
may be partly or entirely
unavailable.
InF 41
software versions.
Inform service and have
the software updated to
the latest version.
InF 42
- Control board (C1/back
panel) and VibroCheck
(C3) have different
- It is possible that due to
different software ver-
sions, some or all func-
tions of the instrument
may be partly or entirely
unavailable.
software versions.
"InF" messages can be removed by pressing the Clear key.
The message appears once each time the instrument is switched ON.
"InF" messages do not cause the instrument to be locked.
After all error messages, the instrument MUST be switched off, then on again using the main
switch. – Exceptions are InF 41 and 42.
- A calibration is car-
ried out even if the
blade is jagged.
Error 51
- Horizontal calibration
of VibroCheck is not
possible.
- Possible operating error,
see Operating Manual.
- Great deal of damage or
dirt on the blade or blade
holder. Use a new blade
or blade holder.
A great deal of obvi-
ous damage or dirt
must be present
before a blade cali-
bration is canceled
automatically.
- Controllers have different
software versions. Have
the software updated.
- VibroCheck is defective.
Have it checked by ser-
vice.
Leica VT1200/VT1200S – Microtome
43
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7. Malfunctions: Meanings and Troubleshooting
Error/INF No.
Error
Troubleshooting
Remark
- Basic calibration of
light barrier is not pos-
sible for VibroCheck.
- Emitter diode or receiver
is defective.
Error 52
- VibroCheck is defective.
- Inform service!
Error 53
- VibroCheck blade
search not successful.
- No blade and/or blade
holder swung out or not
installed.
- VT1200 drives to the
lowest Z position us-
ing the stepper motor
after an unsuccessful
search. (Allows blade
installation)
- Emitter diode or receiver
dirty. Clean
- VibroCheck is defective.
Communication
between keyboard
– VT1200/S
- Communication error
between control unit
and VT.
- VT1200S: display lights up,
but remains blank.
- VT1200: row of dots
flashes.
- Inform service!
- The knife/blade
collides with the
buffer tray
- The buffer tray was not
pushed in up to the
rear pin or was not
clamped down during
installation.
Push in the buffer tray as
far as it will go and clamp
it down with the lever.
- The VibroCheck
collides with the
blade
- The VibroCheck was
not pushed all the way
in or was not clamped
down during installa-
tion.
- Push in the VibroCheck as
far as it will go and clamp
it down with the lever.
- Switching from SINGL
to CONT is not possible.
- In MAN mode, only single cuts are possible.
- The cutting window
cannot be defined.
- In MAN mode, only single cuts are possible.
- If multiple cuts are required, switch to AUTO mode.
Operating Manual V1.0 – 10/2006
44
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7. Malfunctions: Meanings and Troubleshooting
Error/INF No.
Error
Troubleshooting
Remark
- Not accepted:
• Negative values
• Values of more than
1000μm
Blocked when
RUN is active!
- In MAN mode, pressing
the AUTO-FEED key
feeds the last saved
value.
- In MAN mode, if the
PAUSE key has not
been assigned a func-
tion, a short beep
sounds.
When a key is pressed,
a beep sounds.
If the 1000 hour limit is exceeded while the interment is in normal operat-
ing mode, a flashing "SEr" appears in the upper 3-digit LED for approx. three
seconds after the sectioning process has been ended with the RUN/STOP
key. This indicates that the vibrating component needs to be serviced.
The plug connections are
The instrument is
not working.
VT connection cable: Check
the control unit and power
plug.
loose or the instrument is
connected to the power
supply improperly or not
at all.
Replace the power fuses.
The power fuses are
defective.
Leica VT1200/VT1200S – Microtome
45
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7.
Malfunctions: Meanings and Troubleshooting
7.2 Replacing the Main Fuse
Caution:
Always unplug the power supply before replacing the fuses!
•
Remove the fuse housing on the right side of the instrument above the
power switch. To do so, push an appropriate tool (small screwdriver)
into the slots on the right and the left (Fig. 35 a) and carefully pull it out.
•
Remove the defective fuse and replace it with
the replacement fuse included in the standard
scope of delivery (see Fig. 35 c).
•
Reinsert the fuse housing into the holder on
the instrument according to Figure 35 b and
gently push it in until you hear it click into
place.
35 b
35 a
35 c
Fig. 35
Operating Manual V1.1 – 05/2007
46
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8.
Cleaning and Maintenance
8.1 Cleaning the Instrument
Always put the blades back into the blade case/dispenser when
not in use.
When using cleaners, comply with the safety instructions from the
manufacturer and the labor-safety regulations at your laboratory.
When cleaning the outer surfaces of the instrument, do not use
xylene or solvents containing acetone or xylene. The finished sur-
faces are not resistant to xylene or acetone!
Ensure that liquids do not enter the interior of the instrument dur-
ing cleaning.
Before each cleaning, carry out the following preparatory steps:
•
•
•
•
Switch off the main switch on the side of the instrument.
Place the magnifier cover on the magnifier.
Remove the blade from the blade holder and dispose of it safely.
Pull the ice bath and buffer tray off of the dovetail guide and place them
on the stage.
•
Remove and empty out the buffer tray. Dispose of the contents of the
buffer tray properly.
•
•
Remove the specimen plate and lay it flat on the stage.
Remove the specimen using a single-sided blade and remove any
cyanoacrylate adhesive residue from the specimen plate.
Instrument and outside surfaces
If necessary, the varnished outside surfaces of the control panels can be
cleaned with a mild commercial household cleaner or soap water and then
be wiped with a cloth.
The instrument must be completely dry before it can be used again.
Cleaning the blades
Always wipe the blade from the back of the blade (sapphire blade)
to the cutting edge. NEVER wipe in the opposite direction – risk of
injury!
Clean using an alcohol-based solution or acetone.
Leica VT1200 and VT1200S – Microtome
47
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9.
Ordering Information for Optional Accessories, Consumables and Spare Parts
Ice bath ................................................................................................... 0481 42010
Buffer tray
Buffer tray, complete (plastic)..........................................................................0481 42089
Buffer tray, complete (metal)............................................................................0481 42084
Buffer tray, double-walled, complete .............................................................0481 42088
Buffer tray lid available in
plastic (0481 42089) or metal (0481 42084) ......................................................0481 42090
Hose clamp .......................................................................................................... 0481 41952
Specimen plate
Specimen plate, non-directional (for 20mm high specimens) ...................0481 42086
Specimen plate, non-directional (for 10mm high specimens) ...................0481 43399
Specimen plate, directional, incl. swivel handle ..........................................0481 42068
Blade
VT blades (Gillette), 1 package of 10x10 blades ...........................................0205 42056
Sapphire blade, blade angle of 22° .................................................................0216 39372
Injector blade, dispenser with 20 blades .......................................................0358 27411
Blade holder, complete .....................................................................................0481 42030
VibroCheck............................................................................................. 0481 42075
Display
Microscope, complete ......................................................................................0481 42024
Cover for the LED connection ..........................................................................0481 43402
Magnifier, complete ...........................................................................................0481 42035
Cold light sources
Cold light source CLS 100X 100 – 120V/50-60Hz ...........................................0502 30214
Cold light source CLS 100X 230 – 240V/50-60Hz ...........................................0502 30215
Cold light source CLS 100X 240V/50-60Hz .....................................................0502 30216
Fiber-optic light guide ....................................................................................... 0502 30028
Adhesive
Cyanoacrylate adhesive containing 10gr. .....................................................0371 27414
Refrigeration
Minichiller (circulating cooler) -20°C – +40°C, 115V/60Hz ........................0481 44157
Minichiller (circulating cooler) -20°C – +40°C, 230V/50/60Hz ..................0481 44156
Foot switch.................................................................................................. 0481 43397
Protective cover, small ............................................................................. 0212 43742
Protective cover, large ............................................................................. 0212 43743
Fuse: T1A, 5*20 .................................................................................................... 6943 01000
Cover for the LED connection ..........................................................................0481 43402
Operating Manual V1.1 – 05/2007
48
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9. Ordering Information for Optional Accessories, Consumables and Spare Parts
9.1 Extension Accessories for Standard Specimens
Ice bath
•
•
•
Removable
Drawer design
Remains stable on the stage when preparing
specimen
•
Integrated hand rests for use with the
Leica VT1200 / VT1200 S.
Order no. 0481 42010
Fig. 36
9.1.1 Buffer Tray
Buffer tray, complete (plastic)
•
•
•
•
Buffer tray and lid
Magnetic holder for the specimen plate
Specimen plate, non-directional
Clamp (2x) for holding the hose in position in
the buffer tray
3
•
•
Volumes: 125 cm *
Autoclavable
Order no. 0481 42089
Hose clamp
Fig. 37
Buffer tray, complete (metal)
•
•
Buffer tray and lid
Magnetic holder for the specimen plate
(see the minimized illustration)
Specimen plate, non-directional
Clamp (2x) for holding the hose in position in
the buffer tray
•
•
3
•
•
Volumes: 125 cm *
Non-autoclavable
HC
Underside
Fig. 38
Order no. 0481 42084
Leica VT1200 and VT1200S – Microtome
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9. Ordering Information for Optional Accessories, Consumables and Spare Parts
Buffer tray, double-walled, incl. integrated hand
rest, complete
•
•
•
•
Buffer tray, double-walled
Magnetic holder for the specimen plate
Specimen plate, non-directional
Clamp for holding the hose in position in the
buffer tray
3
•
•
Volumes: 400 cm *
Non-autoclavable
Fig. 39
Order no. 0481 42088
* (Specifications without the blade holder, measured 4mm below the upper edge of the buffer tray)
Lid for covering the buffer tray
The buffer tray is available in plastic
(0481 42089) or metal (0481 42084)
•
Order no. 0481 42090
Fig. 40
9.1.2 Specimen Plate
Specimen plate, non-directional
•
•
•
For specimens of 2 cm in height
Can be rotated 360°
Attached with magnets in the buffer tray
Order no. 0481 42086
Fig. 41
Operating Manual V1.1 – 05/2007
50
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9. Ordering Information for Optional Accessories, Consumables and Spare Parts
Specimen plate, non-directional
•
•
•
For specimens of 1 cm in height
Can be rotated 360°
Attached with magnets in the buffer tray
Order no. 0481 43399
Fig. 42
5°
10°
Specimen plate, directional
Magnet on the
underside
•
•
Inc. swivel handle
Inc. marks for angling specimen 5° and 10°
Order no. 0481 42068
Fig. 43
9.1.3 VibroCheck
Optional measuring instrument for displaying the
vertical deviation of the blade (in μm) and for dis-
playing the direction of rotation of the screws
used to minimize the vertical deviation of the
blade. Can be adjusted using the adjusting screw
on the blade holder.
Order no. 0481 42075
Fig. 44
Leica VT1200 and VT1200S – Microtome
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9. Ordering Information for Optional Accessories, Consumables and Spare Parts
9.1.4 Blades
VT blades (Gillette), platinum plated
1 dispenser with 10x10 blades
Order no. 0205 42056
Sapphire blade, blade angle of 22°
The blade can be reground.
Order no. 0216 39372
Injector blade, dispenser with 20 blades
Fig. 45
Order no. 0358 27411
-
-
-
-
-
-
-
-
Microscope support
9.1.5 Microscope, Complete
S6 Stereozoom microscope
2 eyepieces, 10x23 B, adjustable
Protective objective glass
Bearing cylinder with 3 screws
Dust cover, large
Adapter for the fiber-optic light guide slot
Cover for the LED connection
Fig. 46
Order no. 0481 42024
9.1.6 Magnifier, Complete
-
-
-
-
-
Magnifier support
a
Lens (2x magnification) with lens cover (a)
Bearing cylinder with 3 screws
Dust cover, large
Adapter for the fiber-optic light guide slot
Order no. 0481 42035
Fig. 47
Operating Manual V1.1 – 05/2007
52
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9. Ordering Information for Optional Accessories, Consumables and Spare Parts
9.1.7 Installing the Magnifier Support or Microscope Support
•
First, remove the cover (3) from the basic in-
strument and store it in a safe place.
3
•
Insert the provided Allen screws (a) into the
hole (4) in the bearing bush. Use the size 3
Allen key to screw the screws into the open
slot on the top side of the basic instrument.
•
•
-
Push the magnifier support or microscope
support into the bearing bush as far as it will
go.
a
Adjust the magnifier to the desired inclination
angle and screw in the screw (2) using the size
3 Allen key.
4
Insert the S6 stereozoom micro-
scope into the ring holder and
attach it by screwing it
down.
Fig. 48
2
Fig. 49
Fig. 50
Leica VT1200 and VT1200S – Microtome
53
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9. Ordering Information for Optional Accessories, Consumables and Spare Parts
9.1.8 Fiber-optic Illumination, Cold Light Source
Fiber-optic illumination
•
The fiber-optic illumination is installed after
the magnifier has been installed in the magni-
fier holder and then connected to the cold light
source.
Fig. 52
Order no. 0502 30028
Leica CLS 100 cold light source
•
Serves as a light source for the fiber-optic
illumination.
100-120 V, 50/60 Hz
230-240 V, 50/60 Hz
240 V, 50/60 Hz
Order no. 0502 30214
Order no. 0502 30215
Order no. 0502 30216
Fig. 51
Fig. 53
The cold light source must be operat-
ed at the power supply voltage speci-
fied on the nameplate (on the under-
side of the instrument).
Carefully read the separate Operating
Manual provided before use!
Operating Manual V1.1 – 05/2007
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9. Ordering Information for Optional Accessories, Consumables and Spare Parts
9.1.9 Cyanoacrylate Adhesive
Single-component adhesive for adhering speci-
mens to the specimen plate – Contains 10gr.
Order no. 0371 27414
Fig. 54
9.1.10 Minichiller (circulating cooler)
Connect the circulating cooler with air-cooled
refrigerator to the double-walled buffer tray ac-
cording to the Installation Instructions included
in separate packaging.
Voltage variant 115V/60Hz
Order no. ................................................ 0481 44157
Voltage variant 230V/50/60Hz
Fig. 55
Order no. ................................................ 0481 44156
9.1.11 Foot Switch
Insert the foot switch into the uppermost socket
marked "FS" (5) on the left side of the basic in-
strument.
5
•
The foot switch performs the START/STOP
function.
Order no. 0481 43397
Fig. 56
Leica VT1200 and VT1200S – Microtome
55
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10. EC Declaration of Conformity
EC declaration of Conformity
We herewith declare, in exclusive responsibility, that the instrument
Leica VT1200/VT1200S – Microtome with vibrating blade
was developed, designed and manufactured to conform with the
•
•
Council Directive 73/23/EEC, (Low Voltage) and
Council Directive 89/336/EEC, Appendix I (Electromagnetic Compatibility),
including their amendments up to the date mentioned below.
The following harmonized standards were applied:
•
•
•
•
EN 61010-1: 2001
Safety requirements for electrical equipment for measurement, control and laboratory use -
Part 1: General requirements
EN 61326-1: 1997 + A1: 1998 + A2: 2001 + A3: 2003
Electrical equipmentl for measurement, control and laboratory use - EMC requirements -
Part 1: General requirements
EN 61000-3-2: 2000
Electromagnetic compatibility (EMC)
Part 3-2: Limits - Limits for harmonic current emissions
EN 61000-3-3: 1995 + A1: 2001
Electromagnetic compatibility (EMC)Part 3: Limits -
Section 3: Limitation of voltage fluctuations and flicker in low-voltage
supply systems for equirement with rated current £ 16 A
In addition, the following in-house standards were applied:
DIN EN ISO 9001: 2000.
•
Leica Microsystems Nussloch GmbH
Postfach 1120
D-69222 Nussloch
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hartmut Braun
Managing Director
Dezember 6, 2006
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11. Warranty and Service
Warranty
Leica Microsystems Nussloch GmbH guarantees that the contractual prod-
uct delivered has been subjected to a comprehensive quality control
procedure based on the Leica in-house testing standards, and that the prod-
uct is faultless and complies with all technical specifications and/or agreed
characteristics warranted.
The scope of the warranty is based on the content of the concluded agree-
ment. The warranty terms of your Leica sales organization or the organiza-
tion from which you have purchased the contractual product shall apply
exclusively.
Service information
If you are in need of technical customer support or spare parts, please con-
tact your Leica representative or the Leica dealer where you purchased the
instrument.
Please provide the following information:
•
•
•
•
Model name and serial number of the instrument
Location of the instrument and name of the person to contact
Reason for the service call
Delivery date
Decommissioning and disposal
The instrument or parts of the instrument must be disposed of according to
existing applicable, local regulations.
Leica VT1200 and VT1200S – Microtome
57
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Notes
Operating Manual V1.1 – 05/2007
58
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