Leica RM2245 User Manual

Instruction Manual

Leica RM2245
V1.4 English - 02/2007
Always keep this manual with the instrument.
Read carefully before working with the instrument.

Leica RM2245

Rotary Microtome

NOTE

The information, numerical data, notes and val­ue judgments contained in this manual repre­sent the current state of scientific knowledge
and state-of-the-art technology as we under­stand it following thorough investigation in this
field.
We are under no obligation to update the
present manual periodically and on an ongoing
basis according to the latest technical develop­ments, nor to provide our customers with addi­tional copies, updates etc. of this manual.
For erroneous statements, drawings, technical
illustrations etc. contained in this manual we
exclude liability as far as permissible according
to the national legal system applicable in each
individual case. In particular, no liability what­soever is accepted for any financial loss or con­sequential damage caused by or related to
compliance with statements or other informa­tion in this manual.
Statements, drawings, illustrations and other
information as regards contents or technical
details of the present manual are not to be
considered as warranted characteristics of our
products.

These are determined only by the contract
provisions agreed between ourselves and our
customers.
Leica reserves the right to change technical
specifications as well as manufacturing
processes without prior notice. Only in this way
is it possible to continuously improve the tech­nology and manufacturing techniques used in
our products.
This document is protected under copyright
laws. Any copyrights of this document are
retained by Leica Microsystems Nussloch GmbH.
Any reproduction of text and illustrations (or of
any parts thereof) by means of print, photocopy,
microfiche, web cam or other methods – includ­ing any electronic systems and media –
requires express prior permission in writing by
Leica Microsystems Nussloch GmbH.
For the instrument serial number and year of
manufacture, please refer to the identification
label attached to the instrument.

© Leica Microsystems Nussloch GmbH

Published by:
Leica Microsystems Nussloch GmbH

Heidelberger Str. 17 - 19
D-69226 Nussloch
Germany
Phone: [phone]
Fax: [phone]
Internet: http://www.histo-solutions.com

Leica RM2245

3

TABLE OF CONTENTS

1. Important notes .......................................................................................................................................... 6

1.1 Symbols in the text and their meanings .......................................................................................... 6

1.2 Qualification of personnel ................................................................................................................. 6

1.3 Intended use of instrument ............................................................................................................... 6

1.4 Instrument type ................................................................................................................................... 6

2. Safety ............................................................................................................................................................. 7

2.1 Safety notes ......................................................................................................................................... 7

2.2 Warnings .............................................................................................................................................. 7

2.3 Integrated safety devices ................................................................................................................ 10

3. Instrument components and specifications ................................................................................... 12

3.1 Overview – instrument components .............................................................................................. 12

3.2 Instrument specifications ................................................................................................................ 13

3.3 Technical data ................................................................................................................................... 14

4. Startup ......................................................................................................................................................... 16

4.1 Standard delivery .............................................................................................................................. 16

4.2 Installation site requirements ......................................................................................................... 17

4.3 Assembling the handwheel ............................................................................................................. 18

4.4. Electrical connections ..................................................................................................................... 18

4.5 Switching on the instrument ........................................................................................................... 20

5. Operation .................................................................................................................................................... 21

5.1 Operating elements and their functions ........................................................................................ 21

5.1.1 Instrument control panel ................................................................................................................. 21

5.1.2 Control panel...................................................................................................................................... 22

5.1.3 Display and control elements ......................................................................................................... 23

5.2 Inserting the knife holder................................................................................................................. 30

5.3 Inserting the universal cassette clamp ......................................................................................... 31

5.4 Adjusting the clearance angle ........................................................................................................ 32

5.5 Clamping the specimen .................................................................................................................... 33

5.6 Clamping the knife / disposable blade ........................................................................................... 33

5.7 Cutting into the specimen (trimming) ............................................................................................. 34

5.8 Sectioning .......................................................................................................................................... 34

5.9 Changing the specimen or interrupting sectioning ..................................................................... 35

5.10 Finishing daily routine ...................................................................................................................... 35

6. Optional accessories ............................................................................................................................. 36

6.1 Assembly for fixture for specimen clamps ................................................................................... 36

6.1.1 Rigid fixture for specimen clamps.................................................................................................. 36

6.1.2 Directional fixture for specimen clamps ....................................................................................... 36

4

Instruction manual V 1.4 – 02/2007

TABLE OF CONTENTS

6.1.3 Fine-directional fixture for specimen clamps...............................................................................37

6.1.4 Quick clamping system .................................................................................................................... 38

6.2 Specimen clamps and holders ....................................................................................................... 39

6.2.1 Standard specimen clamp............................................................................................................... 39

6.2.2 Vee insert ........................................................................................................................................... 39

6.2.3 Foil clamp type 1................................................................................................................................ 40

6.2.4 Foil clamp type 2................................................................................................................................ 41

6.2.5 Universal cassette clamp ................................................................................................................ 42

6.2.6 Super mega-cassette clamp ........................................................................................................... 43

6.2.7 Holder for round specimens............................................................................................................ 44

6.3 Knife holder base and knife holder ................................................................................................ 45

6.3.1 Knife holder base, without lateral movement feature................................................................. 45

6.3.2 Knife holder E/E-TC........................................................................................................................... 46

6.3.3 Knife holder N/NZ ............................................................................................................................. 49

6.4 Section waste tray ............................................................................................................................ 51

6.5 Backlighting ....................................................................................................................................... 51

6.6 Tray ..................................................................................................................................................... 52

6.7 Freezer pack ...................................................................................................................................... 52

6.8 Universal microscope carrier ......................................................................................................... 53

6.9 Magnifying lens ................................................................................................................................. 55

6.9 Cold light source ............................................................................................................................... 56

6.10 Fiber-optic light guide ...................................................................................................................... 56

6.11 Ordering information ........................................................................................................................ 57

7. Customized solutions ............................................................................................................................. 59

7.1 Instrument malfunctions .................................................................................................................. 59

7.1.1 Error reports ...................................................................................................................................... 59

7.1.2 Malfunctions, possible causes and troubleshooting .................................................................. 60

7.2 Possible faults ................................................................................................................................... 61

8. Cleaning and maintenance .................................................................................................................. 62

8.1 Cleaning the instrument ................................................................................................................... 62

8.2 Maintenance ..................................................................................................................................... 64

8.2.1 Replacing fuses................................................................................................................................. 64

8.2.2 Maintenance instructions ............................................................................................................... 65

8.2.3 Lubricating the instrument .............................................................................................................. 66

9. Warranty and service............................................................................................................................. 67

10.EC Declaration of Conformity .............................................................................................................. 78

Leica RM2245

5

1. Important notes

1.1 Symbols in the text and their meanings

Dangers, warnings and cautions appear
in a gray box and are marked by a warn-

ing triangle .

Notes, i.e. important user information
appear in a gray box and are marked by

an information symbol .

(5)

RUN/
STOP

Numbers in parentheses refer to item
numbers in illustrations.

Function keys which must be pressed on
the control panel are shown in the text
in bold capital letters.

1.2 Qualification of personnel

• The Leica RM2245 may be operated by
trained laboratory personnel only.

1.3 Intended use of instrument

The Leica RM2245 is a semi-motorized rotation
microtome with a separate control panel for
creating thin sections of specimens of varying
hardness for use in routine and research labo­ratories in the fields of biology, medicine and
industry.

It is designed for cutting soft paraffin speci­mens as well as harder specimens, as long as
they are suitable for being cut manually.

The Leica RM2245 is also suitable for IVD (in
vitro diagnostics).

Any other use of the instrument is considered

improper!

1.4 Instrument type

All information provided in this manual applies
only to the instrument type indicated on the
cover page.

An identification label indicating the instrument
serial number is attached at the left side of the
instrument.

• All laboratory personnel designated to oper­ate the Leica instrument must read this
instruction manual carefully and must be
familiar with all technical features of the
instrument before attempting to operate it.

6

Fig. 1

Instruction manual V 1.4 – 02/2007

2. Safety

Be sure to comply with the safety instructions and warnings provided in this chapter.
Be sure to read these instructions, even if you are already familiar with the operation and use of
other Leica products.

2.1 Safety notes

This instruction manual contains important
instructions and information regarding the
operational safety and maintenance of the
instrument.
The instruction manual is an important part of
the product, which must be read carefully prior
to startup and use and must always be kept
near the instrument.

If additional requirements on accident
prevention and environmental protection
exist in the country of operation, this in­struction manual must be supplemented
by appropriate instructions to ensure
compliance with such requirements.

The protective devices on both instrument and accessories may neither be removed nor modified.
Only service personnel qualified by Leica may repair the instrument and access the instrument’s
internal components.

This instrument has been built and tested in
accordance with the safety regulations for
electrical measuring, control, regulating and
laboratory devices.

In order to maintain this condition and ensure
safe operation, the operator must observe all
the instructions and warnings contained in this
instruction manual.

For current information about applicable stan­dards, please refer to the CE declaration of
conformity on our Internet site:

www. histo-solutions.com

2.2 Warnings

The safety devices installed in this instrument by the manufacturer only constitute the basis for
accident prevention. Primarily responsible for accident-free operation is above all the owner of the
instrument and, in addition, the designated personnel who operates, services or cleans the
instrument.
To ensure trouble-free operation of the instrument, make sure to comply with the following instruc­tions and warnings.

Leica RM2245

7

2. Safety

Warnings – Safety instructions / warning labels attached to the instrument

• Safety instruction labels on the instrument marked with a warning triangle indicate that the
correct operating instructions (as described in this manual) must be followed when operating
or replacing the instrument component bearing the label.
Failure to adhere to these instructions may result in an accident, personal injury, damage to
the instrument or accessory equipment.

Warnings – Transport and installation

• Once removed from the crate, the instrument may only be transported in an upright position.

• Never lift the instrument by the handwheels or the cassette clamp. Always remove the section
waste tray before transporting the instrument.

• Caution! The voltage selector has been preset at the factory.
Before connecting the instrument to the mains power, please check that this setting complies
with the local power requirements of your laboratory.
The mains cable inlet is closed with an adhesive tape that indicates the actual voltage setting
of the instrument upon arrival. Severe damage can be caused to the instrument if the voltage
selector is set to an incorrect voltage!

• When changing the voltage selector setting, ensure that the instrument is not connected to the
mains power!

• Connect the instrument to a grounded power socket only using one of the power cables provided.

• Do not operate in rooms with explosion hazard.

• Exposure to extreme temperature changes between storage and installation locations and
high air humidity may cause condensation inside the instrument. If this is the case, wait at
least two hours before switching on the instrument. Failure to comply with this may cause
damage to the instrument.

• The protective devices on both instrument and accessories must neither be removed nor modified.

Personal safety precautions

• When working with microtomes, personal safety precautions must always be taken. It is man­datory to wear work safety shoes, safety gloves, a mask and safety goggles.

8

Instruction manual V 1.4 – 02/2007

Warnings – Working at the instrument

• Take care when handling microtome knives and disposable blades. The cutting edge is

extremely sharp and can cause severe injury!

• Always remove the knife / blade before detaching the knife holder from the instrument. Always

put the knives back into the knife case when not in use!

• Never place a knife anywhere with the cutting edge facing upwards and never try to catch a

falling knife!

• Always clamp the specimen block BEFORE clamping the knife or blade.

• Lock the handwheel and cover the knife edge with the knife guard prior to any manipulation of

knife or specimen clamp, prior to changing the specimen block and during all work breaks!

• ALWAYS turn the handwheel clockwise; otherwise, the brake will not work properly.

• Always take appropriate safety precautions when sectioning brittle specimens! Specimen may

splinter!

• Ensure that liquids do not enter the interior of the instrument during work!

• Do not attempt to clamp, approach or orient the specimen during the retraction phase.

If a block is oriented during retraction, prior to the next section the block will advance by the
retraction value PLUS the selected section thickness. This involves the risk that the specimen
collides with the knife/blade!

2. Safety

Warnings – Cleaning and maintenance

• Only authorized and qualified service personnel may access the internal components of the

instrument for service and repair!

• Before each cleaning, switch off the instrument, disconnect the power plug, remove the knife

holder completely and clean it separately.
Always remove the knife / blade before detaching the knife holder from the instrument.

• Lock the handwheel before each cleaning!

• Do not use any solvents containing acetone or xylene for cleaning!

• Ensure that no liquids enter the interior of the instrument when cleaning!

• Do not turn the instrument on before it is completely dry!

• When using detergents please comply with the safety precautions of the manufacturer.

• Turn the instrument off with the mains switch and pull the mains plug, before replacing the

fuses! Only use fuses of the same specification! For fuse specifications, refer to chapter 3.3 –
"Technical data".

Leica RM2245

9

2. Safety

2.3 Integrated safety devices

5

Locking the handwheel

There are two ways of locking the handwheel (12):
Using the lever (3) on the right side of the micro-

tome base plate, the handwheel can be braked
in almost any position.

• To brake, rotate the lever in a counterclock­wise direction to position .

12

Caution!
The braking lever (3) must be exactly in
position , so that the handwheel brake
is applied correctly.
If the lever is moved beyond this point, it
is possible that the handwheel is no
longer braked.

• To unlock the handwheel brake turn the lever
(3) back to its original position. Position

.

• To lock the handwheel, press the lever (5)
outwards and continue to turn the hand-

3

wheel slowly until it locks exactly in the
12 o'clock position.

In both cases the yellow LED (4) in the LOCK will
be lit and the instrument cannot be started.

When using both brake systems at the

Fig. 2

4

same time, always move the lever (3) to
position  first. Otherwise, it may be not
be possible to release the lever (5).

10

Fig. 3

Instruction manual V 1.4 – 02/2007

2. Safety

7

Knife holder N

8

7

Knife guard on the knife holder

Each knife holder is equipped with a tightly
mounted knife guard (8, 9). This makes it possi­ble to cover completely the cutting edge in
every knife or blade position.

Knife holder N/NZ

The knife guard (8) of the knife holder N/NZ can
be easily positioned via the two handles (7)

Fig. 4).

(
To cover the knife edge, push both cover strips
of the knife guard to the center.

Fig. 4

Knife holder E/E-TC

Knife holder E

11

9

10

The knife guard on knife holder E/E-TC consists
of a red foldaway handle (9). To cover the
cutting edge, fold the knife guard handle (9)

Knife holder E-TC

upwards as illustrated in

The clamping levers on the knife
holder E are not interchangeable.
The two clamping levers (10, 11) must
remain in the position shown at all times,
as otherwise isolated malfunctions of
the knife holder can occur.
Clamping lever for the blade (10) at the
right, clamping lever for the lateral dis­placement (11) at the left.

Fig. 5.

9

Leica RM2245

Fig. 5

11

3. Instrument components and specifications

3.1 Overview – instrument components

Directional

specimen holder

fixture with quick

clamping system

Separate control panel

Leica RM2245

Instrument

control panel

Handwheel

locking

mechanism

Smooth-turning

handwheel

Lever of

handwheel brake

Knife guard on

the knife holder

Clamping lever for
lateral displacement

Knife holder E with
lateral movement

Knife holder base

12

Section waste tray

Fig. 6

Instruction manual V 1.4 – 02/2007

Rear side of instrument

Magnet for holding
the wrench size 4

3. Instrument components and specifications

Vents

Voltage selector
switch with fuses

Main switch

Power
connection

3.2 Instrument specifications

The Leica RM2245 is a semi-motorized rotary
microtome with a light-action handwheel.
The RM2245 supports two manual sectioning
modes:
rocking mode and conventional sectioning with
full turns of the handwheel.
All important controls are grouped in a user­friendly manner on a separate control panel
with adjustable inclination.
Important information on the operating status of
the instrument such as retraction, locking,
trimming thickness, section thickness, and
counters for the total number of sections and
total thickness sectioned is displayed directly
on the instrument.
The instrument features two independent hand­wheel locking systems for enhanced user safety.
It also features an adjustable retraction system.

Connecting

cable for

control panel

Fig. 7

The retraction value can be selected as
required.
The motorized object head can be moved at two
speeds (300μm/s and 900μm/s). The coarse
drive speed and direction can be controlled via
buttons at any time.
The minimum and maximum object head end
positions are signaled visually and acoustically.
The thickness for trim and sectioning
modes can be programmed and stored indepen­dently.
A ruler integrated in the base of the microtome
facilitates restoring a previous knife holder
position.

Leica RM2245

13

3. Instrument components and specifications

3.3 Technical data

General

Approvals: The instrument-specific marks are located next to

the identification label.

Nominal supply voltages: 100 / 120 / 230 / 240 V AC ±10%
Nominal frequency: 50/60 Hz
Power draw: 70 VA
Protective class
Power fuses: 2 x T 1.0 A UL listed
Pollution degree:
Overvoltage installation
Maximum heat emission: 70 J/s
Operating temperature range: +10 °C to +35°C
Temperature range during storage: +5 °C to +55 °C
Relative humidity: max. 80% non-condensing
Humidity during storage: < 80%

➀➀

➀

➀➀

according to IEC-1010, UL 3101, EN 61010

➀➀

➀

➀➀

:I

➀➀

➀

➀➀

:2

➀➀

➀

➀➀

:II

Dimensions and weight

Basic instrument

Width (including handwheel): 413 mm
Width (excluding handwheel): 300 mm
Depth (including waste tray): 618 mm
Height (total): 305 mm (with tray on the hood)
Working height (knife blade): 100 mm (measured from the base plate)
Working height (knife blade): 168 mm (measured from the table)

Weight (without accessories): approx. 37 kg

Control panel

Width: 94 mm
Depth: 164 mm
Height: 50 mm
Height (in inclined position): 81 mm

Weight (net): approx. 0.450 kg

14

Instruction manual V 1.4 – 02/2007

Microtome

Sectioning thickness setting:

Section thickness setting range: 0.50 - 100 μm
Setting values: from 0.50 μm - 5.0 μm in 0.5 μm increments

3. Instrument components and specifications

from 5.0 - 20.0 μm in 1.0 μm increments
from 20.0 - 60.0 μm in 5.0 μm increments
from 60.0 - 100.0 μm in 10.0 μm increments

Trimming section thickness setting range:
Setting values: from 1.0 - 10.0 μm in 1.0 μm increments

Object feed: 28 mm ±1 mm, feed motion via step motor

Vertical stroke: 70 mm

Maximum sectioning area w/o retraction: 65 mm without specimen orientation
Maximum sectioning area with retraction: 60 mm

Specimen retraction:

in manual sectioning mode: 5 - 100 μm in 5 μm increments; can be turned off

Electric coarse feed: 300 μm/s and 900 μm/s

Repositioning of knife holder base

north-south: ± 24 mm

Maximum specimen size (W x H x D): 50 x 60 x 40 mm

1 - 600 μm

from 10.0 - 20.0 μm in 2.0 μm increments
from 20.0 - 50.0 μm in 5.0 μm increments
from 50.0 - 100.0 μm in 10.0 μm increments,
from 100.0 - 600.0 μm in 50.0 μm increments

Specimen orientation

horizontal: 8°
vertical: 8°

Leica RM2245

15

4. Startup

4.1 Standard delivery

The Leica RM2245 standard delivery includes:

1 Leica RM2245 basic instrument, without orientation ................. 0501 38178

1 handwheel, complete ...................................................................... 0501 38181

1 external control panel ..................................................................... 0501 38179

1 section waste tray............................................................................ 0502 37931

1 set of power cables consisting of:

1 power cable for Germany ......................................................... 0411 36958

1 power cable for USA/Canada/Japan ...................................... 0411 36960

1 power cable for UK ST/BU F-5A ............................................... 0411 36959

1 tool set – consisting of: ................................................................... 0502 37965

1 Allen key with handle, size 5 ..................................................... 0194 04760

1 Allen key with handle, size 4 ..................................................... 0194 04782

1 Allen key size 3 ............................................................................ 0222 04138

1 screwdriver 3x50, 186 long ....................................................... 0170 11568

1 bottle (50 ml) of oil for drives, type 405 .................................... 0336 06086

2 micro-fuses 1.0 AT ...................................................................... 6943 01001

1 brush w/magnet .......................................................................... 0183 40426

1 dust protective cover....................................................................... 0212 30350

1 Instruction manual ........................................................................... 0700 37113

16

The accessories ordered are included in a separate box.
Carefully check the delivery against the packing list and the deliv­ery note. Should there be any discrepancy, please contact the
Leica selling unit handling your order.

Instruction manual V 1.4 – 02/2007

4.2 Installation site requirements

• Stable, vibration-free laboratory bench with horizontal and even stage
plate; practically vibration-free floor.

• No other instruments nearby which might cause vibrations.

• Room temperature permanently between +10 °C and +35 °C.

• Obstruction-free access to the handwheel.

Never operate the instrument in rooms with explosion hazard.

Setting up the instrument

Do not transport the instrument by holding it on the handwheel
shaft, the object head or the cover!

• By holding the instrument (5) at the front by the baseplate, and at the
rear by the recessed grip (Fig. 8), lift it out of the molded cushion (6) of
the packaging and place it on a stable laboratory table.

4. Startup

6

Leica RM2245

5

9

Fig. 8

• The two sliding elements (9) located on the
rear of the base plate make it easier to move
the instrument on the table.

• To move the instrument, hold it by the front
of the base plate, lift it up gently and slide it
on its slides.

17

4. Startup

4.3 Assembling the handwheel

The handwheel has to be assembled before attempting to use the instrument.
The necessary parts and tools can be found in the toolkit.

4.4. Electrical connections

The feather key (4) is loosely placed in the

4

1

handwheel shaft (1) and fixed in place with a
tie-rap during transport.

• Remove the cable tie.
Caution!
Make sure not to lose the feather key!

2

• Place the handwheel (2) on the handwheel
shaft (1) as shown.

• Tighten the screw (3) located in the center

3

hole of the handwheel with an Allen key
size 4 (5).

5

• Remove the cover foil from the self-adhesive
cover disk (6) and fix the cover disk on the

Fig. 9

handwheel.

The instrument MUST be connected to a grounded power socket. Use only the power cable
provided that matches the power supply (outlets) of the country of use. Do not use an extension
cable!

Checking the voltage

The Leica RM2245 can be connected to various
electrical power grids (depending on voltage
and frequency) and, for this reason, is always
delivered with a set of various power cables.

New instruments are factory-set to 230 volts.
This is documented by a yellow label (230 VOLT)
on the rear of the instrument, which covers the
power switch and power socket.

18

Before connecting the instrument to the
power supply, be absolutely certain to
check that the voltage selector is set to
the voltage in use in your area!
Severe damage can be caused to the in­strument if the voltage selector is set to
an incorrect voltage!
Never change the setting of the voltage
selector while the instrument is con­nected to the power supply.

Instruction manual V 1.4 – 02/2007

Checking the voltage (continued)

4. Startup

22

The voltage selector is located above the main
power switch, on the left-rear side of the instru-

21

ment (Fig. 10). The voltage setting is displayed in
the viewing window (22).

• Insert a small screwdriver into the cutout

(25) and carefully pry out the insert.

• Remove the voltage selector housing (21)

together with the fuses (23). Remove the
voltage selector block (24) (white) and insert

25

24 2123

it again such that the correct local voltage is
displayed in the viewing window (22).

• Reinsert the voltage selector housing with

the block and fuses and push it in until it
engages (audible click).

27

26

Fig. 10

Connecting the control panel

The connecting cable (15) of the control panel is
fixed to the microtome. It may not be discon­nected.

Leica RM2245

• Insert the plug (14) of the connecting cable

(15) into the connecting jack (16) on the rear
of the control panel.

• To fasten the plug, tighten the two

14

16

17

15

Fig. 11

screws (17).

19

4. Startup

4.5 Switching on the instrument

Exposure to extreme temperature changes and high air humidity may cause condensation to form
inside the instrument.
After transporting, please wait at least 2 hours to allow the instrument to adopt the ambient
temperature before turning it on!
Failure to comply with this may cause damage to the instrument.

Connecting the power supply

• Before connecting the power cable, make sure that the power switch
(27) on the rear of the instrument is switched to "O" = OFF.

• Various country-specific power cables are provided with the instru­ment. Make sure that the power cable used has the correct plug for
the power socket.

• Insert the connector of the power cable into the connection socket
(26) and plug the power plug into the power socket.

When turning the instrument on with the mains switch, do not press any of the buttons of the
control panel!

Turn the instrument on with the mains switch at the rear.



This is followed by a beep.
The instrument initializes.

20

The software version is displayed in the 4-digit display for approx. two
seconds. Then the display reads "0000". After the microtome is switched
on, the display fields and LEDs of all activated functions are lit up on the
instrument’s control panel and display field.

The three-digit LED display indicates the last value set for the section
thickness or trimming section thickness, depending on which setting was
last activated. This is indicated simultaneously on the control panel and
microtome. The LED of the active mode (here the section thickness) is illu­minated in green.

4

If the yellow LED in the LOCK field (4) of the control panel is lit, the
mechanical handwheel lock or the handwheel brake (

Item 3 in Fig. 3) is

activated.
The instrument cannot be started as long as the LED is lit.

Instruction manual V 1.4 – 02/2007

5.1 Operating elements and their functions

The operating functions of the microtome are divided between a control panel and a display unit
on the microtome.
A control panel on the instrument displays the current operating mode as well as various settings.
All operating functions are centrally located in the separate control panel. All keys and displays
are logically arranged in functional groups and easily identifiable.

5.1.1 Instrument control panel

RETRACT LED
Lights up during
specimen retraction.

Three-digit display
for displaying
section thickness/trim­ming section thickness.

Four-digit display
of the section counter.

MENU MODE button
Switches between
section thickness sum
and section counter.

5. Operation

LED - LOCK
Lights up when
handwheel locking
mechanism
is activated.

Green LED
Lights up when
trimming mode is
activated.

Green LED
Lights up when
sectioning mode is
activated.

Green LED
Section thickness sum,
indicates the total
for all sections.

Green LED
Section counter
displays the number
of all sections.

CLEAR button
Resets section counter
and section thickness
sum back (to 0).

MENU MODE + CLEAR
pressed simultaneously
switches to the setting of
the retraction value.

Leica RM2245

Fig. 12

21

5. Operation

5.1.2 Control panel

Three-digit display
for section thickness/
trimming section
thickness

LED TRIM (green)
Lights up when trim­ming mode is activated

Buttons
for setting the section
thickness/trimming
section thickness

Button
to enable and
disable rocking
mode.

Yellow LED
Flashes during coarse
feed backwards; lights
up when rear end
position is reached.

Yellow LED
Flashes during coarse
feed forwards; lights
up when front end
position is reached.

LED SECT (green)
Lights up when
sectioning mode is
activated

TRIM/SECT button
For switching between
sectioning mode and
trimming mode.

Coarse feed buttons

Trimming mode:

Sectioning mode:

22

Coarse feed
backward
fast

Multiple
step
backward

Coarse feed
forward
fast

Multiple
step
forward

Coarse feed
forward
slow

Single
step
forward

Coarse feed
backward
slow

Single
step
backward

Instruction manual V 1.4 – 02/2007

Fig. 13

5. Operation

5.1.3 Display and control elements

Fig. 14

Selecting the sectioning and trimming mode

To switch between sectioning mode and trimming mode, press the TRIM
SECT button. Whenever the button is pressed, the display toggles be-

tween SECT and TRIM.
In the SECT display, the sectioning thickness in the range from 0.50 to

100.0 μm is shown, and in the TRIM display, the trimming section thick­ness between 1.0 and 600 μm is displayed.

Setting the section thickness/trimming section thickness

Adjust these settings using the

Section thickness setting range: 0.50 - 100 μm
Setting values: from 0.5 μm - 5.0 μm in 0.5 μm increments

Three-digit display

This display is located both on the instrument
and on the control panel.
If the SECT LED is lit up, the display shows the
section thickness setting in μm.
If the TRIM LED is lit up, the display shows the
trimming section thickness setting in μm.

from 5.0 - 20.0 μm in 1.0 μm increments
from 20.0 - 60.0 μm in 5.0 μm increments
from 60.0 - 100.0 μm in 10.0 μm increments

- keys on the control panel.

Coarse feed functions

Leica RM2245

Trimming section thickness setting range: 1 - 600 μm
Setting values: from 1.0 - 10.0 μm in 1.0 μm increments

from 10.0 - 20.0 μm in 2.0 μm increments
from 20.0 - 50.0 μm in 5.0 μm increments
from 50.0 - 100.0 μm in 10.0 μm increments
from 100.0 - 600.0 μm in 50.0 μm increments.

The electric coarse feed at two speeds is used for a rapid movement of
the specimen towards and away from the knife.
Press the buttons with the double arrow for a speed of 900 μm/s; for
300 μm/s please use the buttons with a single arrow.
In sectioning mode the coarse drive can be used in STEP mode, or with
continuous feed. Continuous feed is the default setting.

23

5. Operation

Sectioning mode

Button functions in STEP

mode

Multiple
step
backward

Multiple
step
forward

Single
step
backward

Single
step
forward

Trimming mode

Backwards coarse feed

40

Forward coarse feed

41

In sectioning mode the user can select between STEP function (step­by-step specimen feed) and continuous specimen feed.

When continuous feed is selected, the coarse feed buttons have the same func­tions as in trimming mode. The STEP function is useful for careful step-by-step
approximation of the specimen towards the blade.

How to activate the STEP function:

• Switch the instrument on while holding the button on the control panel.

(Likewise, to deactivate switch the instrument on while pressing the button

.) While the instrument is initializing, hold the button until the software
version number is no longer displayed (ensure that version number 2.1 was

displayed).

This feature is only available in sectioning mode in version 2.1 or
higher. If you have an earlier software version, please contact Leica
Service.

•

Press TRIM/SECT button and select sectioning mode (LED SECT lit)

• When pressing a slow-speed coarse feed button (with an arrow) in STEP

mode, the specimen moves towards or away from the specimen by the value
indicated on the display (single step).

• By short activation of a double-arrow coarse feed button, a single step is also

effected in the appropriate direction.

• Longer activation of the double-arrow coarse feed button effects a repeated

feed motion for as long as the button is pressed.

In the trimming mode, the coarse feed buttons operate a continuous
movement as long as the button is held down. The double-arrow button

for rapid coarse feed backward movements has a lock-in function.

• To start the rapid backwards movement (away from the blade) press the

button .
After the button is pressed, the object head is moved to the rear end
position.

• To stop the movement, press any of the four coarse feed buttons.

• The yellow LED (40) in the button flashes while the object head is in motion,

and remains lit continuously when the rear end position is reached.

• Press the button to start the slow backwards movement. The

travel continues as long as the button is held depressed.

• Press the appropriate button to start a rapid or slow forward movement. The

travel continues as long as the button is held depressed.

• During the forwards movement, the yellow LED (41) in the button flashes.

When the front end position is reached, an acoustic signal is heard and the
LED stops flashing and remains lit.

.

24

Instruction manual V 1.4 – 02/2007

5. Operation

Four-digit display on the instrument

The four-digit display is adjustable.

When the

ΣΣ

Σ μm LED is lit, the display shows the

ΣΣ

sum of the section thicknesses in μm for all sec­tions completed since the instrument was
switched on.
(Section thickness sum)

When the

ΣΣ

Σn LED is lit, the display shows the

ΣΣ

number of all previously completed sections.

Fig. 15

• To change the display mode, push MENU MODE until the LED of the
desired mode is illuminated.

• Press CLEAR to reset section thickness sum or section number.

• This will only reset the currently displayed value.

Caution!
When the instrument is switched off using the main power switch,
both values (section thickness sum and section number) are
erased from memory.

Specimen retraction

Leica RM2245

To prevent damage to the blade and specimen, the specimen is moved
away from the blade during the return motion to the upper home position.

The retraction value can be selected in 5 μm increments between 5 and
100 μm. Specimen retraction is set to 10 μm at the factory.

Specimen retraction can be disabled if required.
The selected setting is maintained when the instrument is turned off.

25

5. Operation

Configuring the retraction settings

+

buttons simultaneously.

• The current set value is displayed as a three-digit number in the four­digit display (e.g. "025" = 25 μm).

• Select the desired retraction value.

• To call up the retraction settings, press the MENU MODE and CLEAR

or

The retraction value can be adjusted in increments of 5 μm to a maxi­mum of 100 μm using the

• To exit the retraction settings, press MENU MODE.
A retraction movement takes place by the newly selected value after
each section.

4

• While the specimen is in retraction, the yellow LED on the RETRACT
display (4) lights up.

Switching off the specimen retraction

• To call up the retraction settings, press MENU MODE and CLEAR
simultaneously.

+

- buttons on the control panel.

26

• To switch off retraction, press the

button on the control panel until

the display indicates "OFF".

• To exit the retraction settings, press MENU MODE.
When retraction is switched off, the specimen is not retracted.

The yellow LED (4) of the RETRACT indicator does not light up.

4

Instruction manual V 1.4 – 02/2007

Indication of remaining horizontal feed

5. Operation

HOME

Object head

Remaining horizon­tal feed 1 mm

Total horizontal feed

• You can continue with your working routine.

The yellow LED (41) in the COARSE FEED button lights up (Fig. 16).

• Feed stops once the front end position has been reached; further sec-

tioning is no longer possible in that position.

• You can continue to work on the specimen by pressing the corre-

sponding coarse feed button in the rear end position (HOME) and con­tinuing with sectioning.

41

Fig. 16

The visible and audible remaining feed indica­tion feature informs the user during trimming
and sectioning when a remaining feed of ap­proximately 1 mm is available before the front
limit is reached.

The yellow LED (41) in the COARSE FEED button
lights up from the beginning of the remaining
feed.

In addition, an acoustic signal is heard for
approx. 2 seconds.

From this point on, a remaining feed of approx.
1 mm is available.

In the remaining feed area, no more object
feeding to the knife is possible using the coarse
feed buttons.

Leica RM2245

Caution!
To do so, you must press TRIM/SECT to switch to trimming mode,
as otherwise, you cannot use the coarse feed.

If the object head is already in the remaining feed range when the
instrument is switched on, an additional acoustic signal is heard
after the software version is displayed.

• You can continue to work on the specimen by moving it back a short

distance using the coarse feed buttons (set trimming mode!).

• The STEP function is disabled in the remaining feed range.

27

5. Operation

Directional fixture for specimen clamps

In the quick clamping device of the directional specimen holder fixture, all specimen clamps
available as optional accessories can be used (implemented).

The object orientation allows for simple position
correction of the specimen surface when the
specimen is clamped into place.

30

32

29

32

31

Fig. 17

Display of the zero position

For better display of the zero position, the orien­tation has two red indicators (32).

When both indicators are visible and both set­screws are in zero position at the same time
(notch point, white marking on ""), the speci­men is in zero position.

When the large standard specimen
clamp (50 x 55 mm) is used, the speci­men orientation of 8° in north-south
direction is no longer possible.
The usable angle is only about 4° in this
case.

The directional specimen holder fixture may be
exchanged for a non-directional fixture
(optional accessory).

Orienting the specimen

Specimen blocks must not be oriented
during the retraction phase!
If a block is oriented during retraction,
the block will advance by the retraction
value PLUS the selected section thick­ness before the next section.
This may cause damage to both
specimen and knife!

• Raise the object head to the upper end posi­tion and activate the handwheel lock.

• To release the clamp, turn the eccentric
lever (29) forwards.

• Turn setscrew (30) to orient the specimen in
north-south direction. Turn setscrew (31) to
orient the specimen in east-west direction.

Each complete turn of the screw inclines the
specimen by 2 °. A total of 4 complete turns =
8 ° are possible in every direction. The accu­racy is approximately ± 0.5 °.

For ease of estimation, there is a white
marking on the handle and a notch point that
is noticeable during turning.

• To lock the current orientation, turn the ec­centric lever (29) backwards.

28

Instruction manual V 1.4 – 02/2007

5. Operation

Fine adjustment of the force balance

If another accessory of a different weight is
mounted on the object head (33), you must
check whether it is necessary to readjust the
force balance.

Checking the correct setting:

33

Fig. 18

• Attach the new accessory and clamp the

specimen.

• Set the object head to half the height of the

vertical travel range by turning the
handwheel (

Fig. 18).

If the object head remains in this exact position,
the setting is correct.
If the object head moves, i.e. it is raised or low­ered, fine adjustment is necessary.

Important!
Never turn the
screw more

1

than

/

2

turn at a time.

The force balance is adjusted using the screw
(34), which can be accessed by removing the
section waste tray on the bottom of the base

Failure to adjust the force balance may
result in injury while working.

plate of the microtome. Use the Allen key pro­vided, size 5 (with handle!) for the adjustment.

• If the object head moves downwards, turn the

1

screw approx.

/

turn clockwise.

2

• If the object head moves upwards, turn the

screw (34) approx.

1

/2 turn counterclockwise.

• Continue this procedure until the object

head no longer moves once released.

34

Fig. 19

Leica RM2245

29

5. Operation

5.2 Inserting the knife holder

55

53

52

Enlarged detail:
Scale for better
repositioning of the
knife holder for
varying specimen
heights.

51

54

Setting up the knife holder base

• Release the clamping lever (50) by rotating it
counterclockwise.

• Insert the knife holder base (51) using the
notch (52) on the bottom into the T-piece (55)
of the microtome base plate (53).

• To secure the knife holder base, turn the
clamping lever (50) clockwise.

The knife holder base (51) can be moved back
and forth on the microtome base plate. This
allows bringing the knife holder to optimal

50

sectioning position in relation to the specimen.
There is a scale (54) on the right side of the

microtome base plate. This enables faster and
better positioning of the knife holder at the
specimen if various combinations of standard
specimens and specimen holders are used. The
rear edge of the knife holder base (51) functions
as the scale reference.

30

Fig. 20

Inserting the knife holder

• Loosen the screw (58) using an Allen key
size 4 (71) until the knife holder (57) can be

56

71

moved.

• Place the knife holder (57) with the under­side groove onto the T-piece (56) of the knife

57

holder base (51).

• To clamp, retighten the screw (58).

58

Fig. 21

Instruction manual V 1.4 – 02/2007

5.3 Inserting the universal cassette clamp

5. Operation

60

There are two versions of the specimen holder,
one with and one without specimen orientation,
which are interchangeable.
The object orientation allows for simple position
correction of the specimen surface when the
specimen is clamped into place.

You can use the quick clamping system (64) to
hold all available accessory specimen clamps
(for more information, see Chapter 6 "Optional

12

accessories").

To do so, proceed as follows:

• Move the object head (60) to the upper end

position by turning the handwheel (12) and
engage the handwheel lock.

62

60

• To release the clamping system, turn the

screw (61) of the quick clamping system (64)
counterclockwise using an Allen key size 4
(71).

64

63

61

71

• Push the guide (63) of the universal cassette

clamp (62) from the left into the quick clamp­ing system (64) as far as it will go.

• To clamp the cassette clamp turn the screw

(61) clockwise as far as it will go.

Since all stage clamps available as accessories are equipped with the same kind of
guide on the back, they are inserted in the same way described here using the example
of the cassette clamp.

Leica RM2245

Fig. 22

31

5. Operation

5.4 Adjusting the clearance angle

• The index marks (0 °, 5 ° and 10°) for adjust­ment of the clearance angle (59.1) are located
on the right side of the knife holder (57).

57

51

Enlarged detail:
Index marks for
adjusting the
clearance angle.

• There is also an index mark (59.2) on the
right side of the knife holder basis (51) which
serves as a reference point when adjusting
the clearance angle.

• Loosen the screw (58) using an Allen key
size 4 (71) until the knife holder (57) can be
moved.

58

• Move the knife holder until the index mark of
the desired clearance angle coincides with
the reference line on the knife holder base.

Example:
Enlarged detail showing a clearance angle
setting of 5 °.

59.1

59.2

71

• Hold down the knife holder in this position

The recommended clearance angle
setting for knife holder E is approx.

5°.

and retighten the screw (58) for clamping.

32

Fig. 23

Instruction manual V 1.4 – 02/2007

5.5 Clamping the specimen

• Rotate the handwheel until the specimen clamp is in the uppermost
position.

• Activate the handwheel lock by allowing the handwheel handle to lock
in place and then activate the brake.

• Insert a specimen block into the specimen clamp.

5. Operation

Always clamp the specimen block BEFORE clamping the knife.
Lock the handwheel and cover the knife edge with the knife guard
prior to any manipulation of knife or specimen, prior to changing
the specimen block and during all work breaks!

A detailed description for inserting the specimen into various
specimen clamps and specimen holders is provided in Chapter 6,
"Optional accessories".

5.6 Clamping the knife / disposable blade

Be very careful when handling microtome knives or blades. The
cutting edge is extremely sharp and can cause severe injury!

• Carefully insert knife or disposable blade into the knife holder and
clamp.

• Make sure that the blade is clamped parallel to the upper edge of the
pressure plate.
(For more information

A detailed description for inserting the blade or the knife into the
individual knife holders is provided in Chapter 6, "Optional acces-
sories".

Leica RM2245

see Chapter 6.2.2, Fig. 36)

33

5. Operation

5.7 Cutting into the specimen (trimming)

• Use the TRIM/SECT key to select the trim mode.

• Set the desired trim section thickness.

• Release the handwheel lock and the brake.

•In TRIM mode, use the coarse feed buttons to move the sample
against the knife/blade.

5.8 Sectioning

Always turn the handwheel evenly in clockwise direction; otherwise, the brake will
not work properly. The rotation speed of the handwheel must be adapted to suit the
hardness of the specimen. For harder specimens, use a slower speed.

41

• Trim the sample by turning the handwheel
or

• Press the ROCK button (LED (41) in button is lit) to select ROCK mode.
Trim the specimen by rocking the handwheel back and forth.

• Terminate trimming when the desired sectioning surface and depth
have been reached.

Always use a different area of the cutting edge for trimming and sectioning.
To do so, laterally displace the blade or knife in the knife holder.

• When using the knife holder E with lateral movement, it is sufficient to
move the knife holder sideways.

• Use the TRIM/SECT key to select the sectioning mode.

• Adjust the appropriate sectioning thickness or verify the selected value.

• Select conventional sectioning or ROCK mode.

34

• To section the specimen, turn the handwheel clockwise smoothly or
rock it back and forth if in ROCK mode.

• Pick up the sections and mount them on microscope slides.

Instruction manual V 1.4 – 02/2007

5.9 Changing the specimen or interrupting sectioning

Lock the handwheel and cover the knife edge with the knife guard
prior to any manipulation of knife or object head, as well as prior
to changing the specimen block and during all work breaks!

• Raise the specimen to the upper end position and activate the me-

chanical handwheel lock.

• Cover the sectioning edge with the knife guard.

• Remove the specimen from the specimen clamp and mount a new

sample to continue.

• Before cutting into a new specimen, move the object head back to the

rear end position.

5.10 Finishing daily routine

• Raise the specimen to the upper end position by turning the handwheel

and engage the handwheel lock.

5. Operation

Leica RM2245

Always remove the knife / blade before detaching the knife holder
from the instrument.
Always put the knives back into the knife case when not in use!
Never place a knife anywhere with the cutting edge facing
upwards and never try to catch a falling knife!

• Remove the blade from the knife holder and insert it in the receptacle

at the bottom of the dispenser, or remove the knife from the knife
holder and put it back in the knife case.

• Remove the specimen from the specimen clamp.

• Push all section debris into the section waste tray and empty the tray.

• Switch the instrument off at the main power switch.

• Clean the instrument (see

Chapter 8.1).

35

6. Optional accessories

6.1 Assembly for fixture for specimen clamps

Depending upon the purchase order, the basic instrument is delivered with the directional or
rigid fixture for specimen clamps which must be assembled first. All specimen clamps
available as accessories can be used in both fixtures for specimen clamps.
Before assembling the fixture for specimen clamps, activate the mechanical handwheel lock!

2

4

3

5

9a 9a

Fig. 24

4

10

1

35b5a5 6

7 + 8

2

1

7 + 8 9b 9b

Fig. 25

• Finally, place the dovetail holder (2) and fasten
by screwing in the 4 screws (1) using an Allen
key size 3.

6.1.1 Rigid fixture for specimen clamps

• Screw the rigid fixture for specimen clamps
(4) onto the object head (3):
Remove the screw (1), attach the fixture for
specimen clamps (4) onto the object head (3)
from the front and tighten the screws (2) with
an Allen key size 3.
Next, insert the screw (1) from the side and
briefly tighten it with an Allen key size 4.

Remove the rubber ring only after
attaching the object head!

6.1.2 Directional fixture for specimen clamps

• Loosen the eccentric bolt (6) by turning it
counterclockwise.

• Completely unscrew the thrust piece (5) with a
flat-tip screwdriver and pull it out with spring
(5a) and pin (5b).

• Completely unscrew the setscrews (3) and (4).

• Attach the directional fixture for specimen
clamps as shown.

• Insert the screws (7+8) in the bore (2 screws
(8) are accessible through the bore (9a)) and
evenly screw them in using an Allen key

• Insert the spring (5a) and pin (5b) with the
flatter side into the thrust piece (5). Complete­ly screw in the thrust piece with a flat-tip
screwdriver.

• Completely screw in the setscrews (3+4).

size 3.

36

Instruction manual V 1.4 – 02/2007

6. Optional accessories

6.1.3 Fine-directional fixture for specimen

clamps

• Before the fine-directional fixture for

specimen clamps can be mounted, loosen
4 screws (10) (Allen key size 3) and carefully
remove the fixture for specimen clamps from
the baseplate (9).

10

9

• Using the 4 supplied screws (11) and the

12

11

Allen key size 3, fasten the baseplate to the
object head (12).

11

Leica RM2245

• Now, screw the fine-directional fixture for

specimen clamps with the 4 screws (10) and
the Allen key size 3 onto the object head.

If the fine-directional fixture for
specimen clamps is not used, retain the
baseplate and 4 screws (11) together
with the fine-directional fixture for
specimen clamps!

Fig. 26

37

6. Optional accessories

A

13

6.1.4 Quick clamping system

It is used as specimen holder for use with the
fine-directional fixture for specimen clamps
with zero point indicators or the directional
fixture for specimen clamps.

• Screw the 4 screws (13) into bore A with an
Allen key size 2.5 and tighten them.

A

38

Fig. 27

Instruction manual V 1.4 – 02/2007

6.2 Specimen clamps and holders

All specimen clamps available as accessories can be integrated into either the
directional or non-directional specimen holder fixture.

6. Optional accessories

6.2.1 Standard specimen clamp

66

The standard specimen clamps are available in
two sizes: 40 x 40 mm and 50 x 55 mm.
They are designed for direct clamping of
rectangular blocks. In addition, they accommo­date the foil clamps.

67

68

• Turn the knurled screw (66) counterclock-

wise to move the movable jaw (68)
downward.

• Mount the sample (67) as required.

• Turn the knurled screw (66) clockwise to

move the movable jaw upward against the
fixed jaw to securely clamp the sample.

Fig. 28

6.2.2 Vee insert

66

The vee insert (70) is mounted in the hole
provided in the lower movable jaw of the stan­dard specimen clamp.
This makes it possible to clamp round
specimens in the standard specimen clamp.

• Turn the knurled screw (66) counterclock-

wise to move the movable jaw (68) down-

70

70.1

69

68

Fig. 29

ward.

• Insert the pin (70.1) of the vee insert (70) in the

hole (69) of the lower jaw (68).

• Mount the sample as required.

• Turn the knurled screw (66) clockwise to move

the movable jaw with the vee insert upward
against the fixed jaw to securely clamp the
sample.

Leica RM2245

39

6. Optional accessories

6.2.3 Foil clamp type 1

The foil clamp type 1 is appropriate both for
clamping very small foil pieces and flat, angular
samples. It is mounted in the standard
specimen clamp.

66

73

72

76

74

71

75

Fig. 30

7473

77

Clamping of foil pieces

• Move the movable jaw (74) to the right as
required by turning the set screw with an
Allen key size 4 (71).

• Place the foil (72) between the movable jaw
(74) and the fixed jaw (73).

• To clamp the foil, screw the movable jaw
(74) against the fixed jaw (73) by using the
Allen key.

• Insert the foil clamp (75) in the standard
specimen clamp as shown.

• Turn the knurled screw (66) clockwise to
clamp the foil clamp in the standard speci­men clamp.

Clamping of flat, angular samples

To clamp angular samples, replace the long set
screw (76) with the short set screw (77)
provided with the foil clamp.

• Unscrew the long set screw (76) to the left
with an Allen key size 4 (71).

• Screw the short set screw (77) in the hole.

• Place the sample (67) between the movable
jaw (74) and the fixed jaw (73).

• To clamp the sample, screw the movable
jaw (74) by turning the set screw (77) against
the fixed jaw (73).

• Insert the foil clamp in the standard
specimen clamp as shown.

• Turn the knurled screw (66) clockwise to
clamp the foil clamp in the standard
specimen clamp.

40

67

Fig. 31

Instruction manual V 1.4 – 02/2007

6.2.4 Foil clamp type 2

The foil clamp type 2 is appropriate for large foil ribbons.
It is mounted in the standard specimen clamp.

6. Optional accessories

72 7978

66

80

• To open the jaws (78) and (79) lightly loosen

the 3 screws (

71).

(

81) with an Allen key size 4

• Insert the foil ribbon (72) from behind to po-

sition it between the movable jaw (79) and

82

the fixed jaw (78).

• To clamp the foil, first tighten the screw in

the middle and then the other two screws
(81) with the Allen key (71).

• Place the foil clamp (82) in the standard

81

specimen clamp so that the beveled surface
(80) on the back of the foil clamp points to

71

the right or left.

• Turn the knurled screw (66) clockwise to se-

curely clamp the foil clamp in the standard
specimen clamp.

Fig. 32

Leica RM2245

41

6. Optional accessories

6.2.5 Universal cassette clamp

60

65

Order No. 0502 37999

Fig. 33

Universal cassette clamp, ice-cooled

a

The universal cassette clamps (UCC) are
designed for horizontal or vertical
clamping of all kinds of commercial
cassettes.

• Push the lever (60) forwards.

• Mount the cassette (65) horizontally or
vertically as required.

• To clamp the cassette, release the lever (60).

Use the ice-cooled UCC with the
non-directional specimen holder
fixture only!

• Ice cubes can be made using the included
Paraflex mold (a).

• Quick clamping system (b), see page 45.

42

b

Order No. 0502 37793

Fig. 34

Instruction manual V 1.4 – 02/2007

6.2.6 Super mega-cassette clamp

6. Optional accessories

2

4

5

3

Assembly of the super mega-cassette clamp

The super mega-cassette clamp should preferably be used with the rigid
fixture for specimen clamps.
To do so, proceed as follows:

Remove the rubber ring (5) only after having attached the cassette
clamp on the object head!

• Screw the rigid fixture for specimen clamps (4) onto the object head (3):
Remove the screw (1), place the fixture for specimen clamps (4) onto
the object head (3) from the front and tighten the screws (2) with an
Allen key size 3.

Next, insert the screw (1) from the side and briefly tighten it with an
Allen key size 4.

• Insert the super mega-cassette clamp from the side on the left into the
dovetail guide of the rigid fixture for specimen clamps and tighten
screw (1).

If the directional fixture for specimen clamps is used with the rigid
knife holder base, the orientation must be in position "0" and the
cover for backlighting illumination must be detached. (Danger of
collision if not observed!)

1

Fig. 35

Leica RM2245

NEVER use the super mega-cassette clamp with backlighting
illumination!

43

6. Optional accessories

6.2.7 Holder for round specimens

The holder for round specimens is designed to accommodate cylindrical samples.
Inserts for specimens of 6, 15 and 25 mm diameter are available.

• To mount the required insert (89.1-3) turn the
clamping ring (90) counterclockwise and

89.1

92

remove it.

89.2

• Place the required insert into the tension
ring (90) and screw the tension ring onto the
thread (91) by turning it clockwise.

91

90

89.3

• Mount the sample (67) and fix by turning the
clamping ring (90) clockwise.

• To orient the inserted sample, insert the pin
(92) into the bore (93) and rotate it counter­clockwise to release the clamp. You can
now rotate the specimen so that the side

67

93

you want faces upwards.

• To lock it in the position you have chosen,
tighten the pin (92) by turning it clockwise.

Fig. 36

44

Instruction manual V 1.4 – 02/2007

6.3 Knife holder base and knife holder

94

6.3.1 Knife holder base, without lateral movement feature

51

6. Optional accessories

The plastic handles of all clamping levers on the
instrument and knife holders can be turned to
the position that is most convenient for each
user.

Pull the grip (94) out of the lever, hold it in this
position, and rotate it to the desired position. It
will then lock automatically when released.

Fig. 37

Repositioning the knife holder base

The one-piece knife holder base (rigid) (51) can
be moved forwards and backwards on the
microtome base plate.

This vertical displacement allows bringing the
knife holder into the optimal cutting position in
relation to the specimen.

Leica RM2245

50

Fig. 38

• To release, rotate the clamping lever (50) on
the right side of the microtome base plate
counterclockwise.

• Reposition the knife holder together with the
knife holder base forward or backward as
appropriate.

• Secure the clamping mechanism by rotating
the lever (50) clockwise.

45

6. Optional accessories

6.3.2 Knife holder E/E-TC

The knife holder E-TC is designed for the
Leica TC-65 tungsten carbide blades.

Prior to inserting the blade, both knife
holder and knife holder base must have
been installed on the instrument!

Inserting the blades, knife holder E and E-TC

Knife holder E-TC

• Fold knife guard (9) downward.

• To insert the blade, flap the right clamping
lever (10) forward and down.

• Carefully insert the blade from the side.
Make sure that the blade is clamped parallel
to the upper edge of the pressure plate.

• To clamp the blade, rotate clamping lever

9

The knife holder E is designed for conventional disposable blades from all current manufacturers. It
is available in two models: one for narrow-band blades and one for broad-band blades. The knife
holder has a lateral movement, so that the entire width of the blade can be used. It is also equipped
with a blade ejector (9a).

10

Fig. 39

(10) back upwards.

46

Knife holder E

9a

11

9

10

Fig. 40

The clamping levers on the knife holder
are not interchangeable. The two clamp­ing levers (10, 11) must remain in the po­sition shown at all times, as otherwise
isolated malfunctions of the knife hold­er can occur.
Clamping lever for the blade (10) at the
right, clamping lever for the lateral
displacement (11) at the left.

Instruction manual V 1.4 – 02/2007

Knife holder E

13

11

A

Note on the knife holder E:

6. Optional accessories

Lateral displacement (only for knife holder E)

10

B

12

Fig. 41

The knife holder E is an important precision component, the quality and
precise adjustment of which have a lasting effect on the entire function of
the microtome. In case of malfunctions or damages to the clamp mount, it
is always required to replace the clamp mount, including the pertinent
clamping lever.
Leica Microsystems offers special prices for new clamp mounts in case of
damages to the clamp mount after the warranty has expired.
In this way, perfect function of the device can be ensured over the course
of many years.

The lateral movement feature of the knife
holder base enables the use of the entire length
of the blade or knife, eliminating the need for re­adjusting the knife holder. The knife holder E
consists of a segment arch A (with lever (11))
and the clamp mount B (with lever (10) and
ejector (13)).
The extreme left and right positions as well as
the middle position are each marked with a
notch point.

• To release the clamp, rotate the lever (11) on

the left side of the knife holder forwards.

• Move the knife holder sideways.

• To clamp, rotate the lever (11) back.

Setting of the clamping system of the clamp mount on the segment arch

To ensure a proper sectioning result, clamp
mount B must be securely clamped onto
segment arch A.
The clamping is carried out using an eccentric
at the lever (11). The clamping force is adjusted
with the setscrew (12) on the underside of the
segment arch. The setting of the clamping is
carried out so that the clamping lever can be
rotated to the stop with constantly increasing

Adjust the clamping with a 2.5 mm Allen key at
the grubscrew (12) so that the lever initially
"bars" when the lever is activated. Continue
turning the grubscrew (12) a little bit (approx.

1

/4 turn to the left or right), then check that the
lever no longer "bars", but also does not jam
"heavily".
(The language CD features a short video film for
this purpose.)

resistance.

Leica RM2245

47

6. Optional accessories

Knife holder E with water bath for narrow-band and broad-band blades

Fig. 42

Use

9

11

10

Knife holder E with water bath is available for
both narrow-band and broad-band blades.

The knife guard on knife holder E consists of a
red foldaway handle (9). To cover the cutting
edge, fold the knife guard handle (9) upwards as
illustrated in Figure.

The clamping levers on the knife holder are not interchangeable. The two clamping
levers (10 and 11) must remain in the position shown at all times, as otherwise isolated
malfunctions of the knife holder can occur.
Clamping lever for the blade (10) at the right, clamping lever for the lateral displacement
(11) at the left.

Floating thin paraffin sections (for example, for subsequent immunostaining
procedures) on the surface of the water. Flat paraffin sections can be
removed from the surface of the water using glass slides.

48

The vessel is filled with water up to the blade.
After trimming, remove the section waste from
the tray and create the sections to be prepared.
The sections floating on the surface of the wa­ter can be removed using the glass slide.

Fig. 43

Instruction manual V 1.4 – 02/2007

6.3.3 Knife holder N/NZ

The knife holders N and NZ are appropriate for standard steel and tungsten carbide knives, profile
c and d, up to 16 cm long. The integrated height adjustment feature allows you to also use knives
that have been resharpened numerous times.

Mounting the knife support bar

• Push knife guard (8) to the center.

• Set the knife support bar (46) onto the height adjustment screws (not
visible) in the position shown. The flat ends of the height adjustment
screws must be located in the slots at each end of the knife support
bar.

Enlarged detail:
Knife inserted and
height-adjusted

Knife holder N
For holding conventional

knives up to 16 cm in
length.

6. Optional accessories

Prior to inserting the knife, both knife holder and knife holder base
must have been installed on the instrument!

49

39

Knife holder NZ
For holding conventional and hard

metal knives up to 16 cm in length.
Knife pressure plate (56) for extreme
stability and full utilization of the
knife blade.

49

Leica RM2245

8

47

56

48

46

Fig. 44

49

6. Optional accessories

Inserting the knife

• Rotate the knurled nuts (48) on the right and left of the knife holder
forward in opposite directions, lowering the knife support bar to the
lowest possible position, thus ensuring that the knife edge will not be
damaged when inserting the knife.

• Unscrew the clamping screws (49) as far out as possible (rotate
counterclockwise).

• Hold the knife (47) at the knife back and carefully insert it in the holder
from the side as shown with the cutting edge facing upward.

Knife height adjustment

When adjusting the clearance angle, the knife edge should be positioned
as exactly as possible in the actual center of rotation of the knife holder.
The lay-on edge (39) of the rear clamping chucks serves as a reference
position for correct knife height adjustment. The knife edge should be
parallel with the locating edges.

• Rotate the knurled nuts (48) uniformly and backwards until the knife
blade is parallel to the lay-on edge (39) (see detailed illustration) of the
rear clamping chucks.

• To clamp the knife (47) evenly screw the two knife clamping screws
(49) inward (rotate clockwise).

Lateral repositioning of the knife

• Push knife guard (8) to the center.

• Loosen the clamping screws (49) by turning them counterclockwise.

• Push the knife (47) to the left or right as required.

• To clamp the knife (47), always tighten the clamping screw (49) first
which is located on the side to which the knife has been repositioned
by turning it clockwise.

50

Instruction manual V 1.4 – 02/2007

6. Optional accessories

18

53

6.4 Section waste tray

• Push the section waste tray (18) from the
front to the microtome base plate (53) until it
is held in place by the two magnets (39)
(on the front of the microtome base plate).
To remove the section waste tray, lift it

39

Fig. 45

1

2

3

1

5

4

slightly and pull it off towards the back.

6.5 Backlighting

The backlighting is inserted at the front
into the one-piece knife holder base.

• Remove the two screws (1) using a slotted
screwdriver and then remove the cover
plate (2).

• Insert the backlighting (3) in the recess at
the rear of the knife holder base.

• Connect the plug (4) of the backlighting to
the socket (5) on the microtome.

The backlighting illuminates once the micro­tome is turned on with the mains switch.

Leica RM2245

Fig. 46

NEVER use the backlighting illumination
with the super mega-cassette clamp!

51

6. Optional accessories

98

98

6.6 Tray

The tray is mounted on the hood of the micro­tome so that the small feet on the underside fit
into the cutouts on the hood.
It is for storage of the utensils used during
sectioning as well as the sectioned specimens.

Fig. 47

6.7 Freezer pack

The freezer pack consists of the freezer plate
(98) and the insulation jacket (99). It is for
cooling (or keeping cold) paraffin specimens.
Up to 35 standard cassettes can be cooled at
the same time. The specimens require approx.
20 min. for being cooled from room temperature
(approx. 20 °C) to "sectioning temperature".
The cooling performance depends on the
ambient temperature and the volume of the
specimens being cooled.
The insulation jacket can be placed on the hood
of the microtome in the same manner as the
tray, or it can be placed next to the instrument.

When using the freezer pack on the
instrument the tray (Fig. 44) must be
removed.

52

99

Fig. 48

• Remove the freezer plate from the insulation
jacket and place it in a deep freezer, ideally
overnight (but for at least six hours) at
approx. -23 °C.

• Reassemble the freezer plate and insulation
jacket and place them on the bench or the
instrument.

Instruction manual V 1.4 – 02/2007

6.8 Universal microscope carrier

6. Optional accessories

a

Unpack all accessories in the package
and check for completeness.

1

1 - Baseplate with drilling (a)
2 - Vertical column with size 8 cap screw (b) and lock

washer (c)

Fig. 49

d

e

8

2

c

3

b

7

6

4

5

3 - Horizontal arm with cross-member (d) and support

ring (e)

4 - Support plate, large (for RM2235, RM2245 and

RM2255)
5 - Support plate, small (for RM2265)
6 - Allen key, size 3
7 - 4 countersunk screws to install support plate
8 - Allen key, size 8

Fig. 50

Assembling the universal microscope
carrier

Leica RM2245

1. Attach baseplate

• Select the large (5) or small (4) support plate,

depending on the microtome to be used.

• Attach the support plate to the baseplate with

the included 4 countersunk screws (7) using

the Allen key size 3 (6).

Fig. 51

53

6. Optional accessories

b

c

Fig. 52

2. Attach vertical column

• Insert the cap screw (b) into the hole of the
baseplate from below. Place the lock washer
(c) on the cap screw from above.

• Thread the silver vertical column (2) onto the
baseplate from above and tighten with the
Allen key size 8.

Fig. 53

f

2

A

The lock washer must be positioned
between the baseplate and vertical
column to prevent unintentional turning
of the column.

Extreme danger of tipping! After installing
the vertical column, immediately place the
microtome onto the baseplate so that the
front feet of the microtome are positioned
in the shallow recesses (A).

3. Attach horizontal arm

• Slide the support ring (e) onto the vertical
column and position it so that the lock nut (f)
is facing to the back. Tighten the lock nut.

2

h

d

g

• Slide the cross-member (d) onto the column.
Ensure that the lock screw (g) is facing to the
right of the baseplate. The horizontal arm must
be centered over the microscope.

e

• Slide the horizontal arm (3), flat side facing the
lock screw (g), into the cross-member (d) and
tighten.

54

Fig. 54

For more information on connecting and
using the microscope, magnifying lens
or cold-light source, please see the
appropriate manual.

Instruction manual V 1.4 – 02/2007

6.9 Magnifying lens

6. Optional accessories

1

4

2

Fig. 55

3

Fig. 56

The magnifying lens provides a 2x
magnification and can be used with all
Leica 2200 series rotary microtomes.

Leica RM2245

Always protect the magnifier glass from
exposure to direct sunlight! Exposure to
sunlight may cause a burning glass effect.
Danger of fire!

• Use the provided protective cap (4) to cover

the magnifying lens.

Fig. 57

55

6. Optional accessories

6.9 Cold light source

1

6.10 Fiber-optic light guide

6

The cold light source may be operated
at the power supply voltage specified on
the identification label (on the underside
of the instrument) only.

• Connect the power cable (1) to the connect­ing jack on the rear of the device.

• Plug the power plug into the power socket.

Carefully read the instruction manual

7

Fig. 58

provided separately before use!

• Attach the fiber-optic light guide (2) to the
adapter of the magnifying lens and secure it
in place in the bore (6) using the screw (5).

•

Pull off the protective cap (3) from the end of the
fiber-optic light guide and keep it in a safe place.

• Insert this end into the opening provided (4)
until it engages with a slight click.

• Switch on the Cold light source using the
power switch (7).

• Remove the protective caps (8) and align the
light guide with the specimen.

Fig. 60

56

Fig. 59

2

5

8

4

3

Fig. 62, Leica rotary microtome with installed optional
accessories: magnifying lens and fiber-optic light guide

Instruction manual V 1.4 – 02/2007

6. Optional accessories

6.11 Ordering information

Fixture for specimen clamps, rigid, silver ............................................................................. 0502 38160

Fixture for specimen clamps, directional, silver ................................................................. 0502 38949

Fixture for specimen clamps, directional, with 2 zero point indicators, silver ............... 0502 37717

Quick clamping system, complete ......................................................................................... 0502 37718

Knife holder-base rigid, silver ................................................................................................ 0502 37962

Knife holder N RM22xx, silver ................................................................................................ 0502 37993

Knife holder NZ RM22xx, silver .............................................................................................. 0502 37994

Knife holder E narrow band RM22xx, silver, with ejector .................................................. 0502 40508

Knife holder E broad band RM22xx, silver, with ejector .................................................... 0502 40509

Knife holder E narrow band Run-off tray RM22xx............................................................... 0502 38961

Knife holder E broad band Run-off tray RM22xx ................................................................. 0502 39114

Knife holder E-TC RM22xx silver ............................................................................................ 0502 37997

Standard specimen clamp with adapter 50x60, silver ........................................................ 0502 38005

Standard specimen clamp with adapter 40x40, silver ........................................................ 0502 37998

V-insert for Standard specimen clamp, silver ..................................................................... 0502 38000

Universal cassette clamp, with adapter (silver).................................................................. 0502 37999

Universal cassette clamp - ice-cooled ................................................................................. 0502 37793

Megaclamp assembly RM22xx, silver................................................................................... 0502 38967

Foil clamp - type 1, black ......................................................................................................... 0402 09307

Foil clamp - type 2, black ......................................................................................................... 0402 26922

Round specimen holder, silver ............................................................................................... 0502 38001

Round specimen holder with adapter and 3 clamping rings, silver ................................. 0502 38002

Clamping ring for round specimen holder, d = 6 mm .......................................................... 0356 08322

Clamping ring for round specimen holder, d = 15 mm ........................................................ 0356 09200

Clamping ring for round specimen holder, d = 25 mm ........................................................ 0356 08320

Leica RM2245

57

6. Optional accessories

EM specimen holder fixture, black ....................................................................................... 0502 29968

EM univ. specimen holder ...................................................................................................... 0356 10868

EM flat specimen holder......................................................................................................... 0355 10405

Special wrench f. EM holder ................................................................................................. 0356 10869

Universal microscope carrier, complete ............................................................................. 0502 40580

Magnifying lens assembly ...................................................................................................... 0502 42790

Cold light sources

Leica CLS 100X, 100-120V/50-60Hz ................................................................................ 0502 30214

Leica CLS 100X, 230V/50-60Hz ................................................................................. 0502 30215

Leica CLS 100X, 240V/50-60Hz ................................................................................. 0502 30216

Fiber-optic light guide ........................................................................................................ 0502 30028

Backlighting assembly ............................................................................................................ 0502 38719

External power supply, complete .......................................................................................... 0500 31244

Handrest for waste tray .......................................................................................................... 0502 38770

Cooling device assembly ........................................................................................................ 0502 38325

Section waste tray, large ....................................................................................................... 0502 37931

Section waste tray, small ....................................................................................................... 0503 39060

Demo Box RM22xx series ....................................................................................................... 0502 38930

Tray ............................................................................................................................................ 0502 37932

"Leica" brush w/magnet .......................................................................................................... 0183 40426

58

Instruction manual V 1.4 – 02/2007

7.1 Instrument malfunctions

7.1.1 Error reports

Indication E1

If this message follows the software version indication after switching on
the instrument, a loss of all parameters has occurred.

• Press any key.
All parameters are then set back to the default values.

• Now all settings must be checked to see if the previously entered
values are still correct.
The values may have to be reentered.

You can continue with your normal working routine.

If E-1 appears repeatedly when switching the instrument on, the lithium
battery may need replacement (service life approx. 7 years).

• Proceed as described above.

• Work normally after checking the settings.

• Have the battery replaced by Leica service as soon as possible.

7. Customized solutions

Certain instrument malfunctions appear on the 3-digit LED display
or are indicated through illuminated LED’s on the control panel.

40

41

Leica RM2245

LEDs (40), (41) in the coarse feed buttons are lit at the same time.

This indicates a defect in the detection of the STOP and HOME positions
of the object head.

The problem can only be resolved by customer service.

59

7. Customized solutions

7.1.2 Malfunctions, possible causes and troubleshooting

Following is a list of the most common problems which can arise while working with the
instrument, along with possible causes and troubleshooting procedures.
If the malfunction cannot be remedied with any of the options listed in the table, or the problem
occurs repeatedly, inform the Leica Service Support immediately.

Problem Corrective actionPossible cause

• No display; no reaction to
buttons pressed after the
instrument is switched on.

• Feed motion no longer occurs.

• The specimen in the residual
path area cannot be returned
using the coarse feed buttons.

1. The power cable is not connect­ed correctly.

2. Power fuses are defective.

3. The cable of the control panel is
not connected correctly.

4. The voltage selection switch is
set incorrectly.

1. The end of the residual path has
been reached.

2. The specimen was already
within the residual path when
the instrument was switched on.

1. STEP mode is still active (LED in
SECT button lights up).

1. Check the connection of the
power cable.

2. Replace power fuses (see 8.3).

3. Check the connection of the
cable to the control panel.

4. Check the voltage setting and
correct it if necessary
(see Chapter 4.4).

1. Select the trim mode by pressing
TRIM/SECT. Then return the
specimen using the coarse feed
button. Then retract the specimen
using the coarse feed button.

2. Follow the procedure in Item 1.

1. Press the TRIM/SECT button to
switch to trimming mode. Return
the specimen using the coarse
feed button.

60

Instruction manual V 1.4 – 02/2007

7.2 Possible faults

Problem Corrective actionPossible cause

7. Customized solutions

1. Thick/thin sections

The sections alternate between
being thick and thin. In extreme
cases, there are no sections
whatsoever.

2. Section compression

The sections are very com­pressed, show folds or are
squeezed together.

3. "Stripes" in sections

For knife holder E

4. Noises during sectioning

The knife "sings" when
sectioning hard specimens.
The sections show scratches or
chatter marks.

5. High blade consumption

• Insufficient clamping of blade,
knife holder, specimen or
orientation.

• The blade is dull.

• The pressure plate is damaged
or incorrectly adjusted.

• Clearance angle of the knife/
blade too small.

• The blade is dull.

• The specimen is too warm.

• The sectioning speed is too fast.

• There is an accumulation of
paraffin on the rear pressure
plate of the knife holder.

• The sectioning speed is too fast.

• The clearance angle is too wide.

• Insufficient clamping of speci­men clamp and/or knife holder.

• Too great of a sectioning force
was applied.

• Check the clamping positions
and repeat the clamping
process

• Laterally displace the knife
holder or insert a new blade.

• Insert a new pressure plate or
use a new knife holder.

• Methodically experiment with
larger clearance angle settings
until you have found the opti­mum angle.

• Use another area of the blade or
a new blade.

• Cool the specimen before
sectioning.

• Reduce the sectioning speed.

• Remove paraffin from this area
on a regular basis.

• Select a slower sectioning
speed.

• Methodically reduce the clear­ance angle setting until you
have found the optimum angle.

• Check all screw and clamp
connections on the specimen
holder system and the knife
holder. If necessary, tighten the
levers and screws.

• Adjust the sectioning speed
and/or section thickness when
sectioning. Select a thinner
section.

Leica RM2245

61

8. Cleaning and maintenance

8.1 Cleaning the instrument

Always remove the knife / blade before detaching the knife holder from the instrument.
Always put the knives back into the knife case when not in use!
Never place a knife anywhere with the cutting edge facing upwards and never try to catch a falling
knife!
When using cleaners, comply with the safety instructions of the manufacturer and the labor-safety
regulations of your laboratory!
When cleaning the outer surfaces, do not use xylene, scouring powders or solvents containing
acetone or xylene. Xylene or acetone will damage the finished surfaces!
Ensure that liquids do not enter the interior of the instrument during cleaning!

Before each cleaning carry out the following preparatory steps:

• Raise the specimen clamp to the upper end position and activate the
handwheel lock.

• Switch the unit off and unplug it.

• Remove the blade from the knife holder and insert it in the receptacle
at the bottom of the dispenser, or remove the knife from the knife
holder and put it back in the knife case.

• Remove knife holder base and knife holder for cleaning.

• Remove the specimen from the specimen clamp.

• Remove section waste with a dry brush.

• Remove specimen clamp and clean separately.

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.
To remove paraffin residue, xylene substitutes, paraffin oil, or paraffin
removers such as "Para Gard" (Polysciences) can be used.

The instrument must be completely dry before it can be used again.

Cleaning the knife

Always wipe the knife from the back of the knife to the cutting edge. NEVER wipe in the
opposite direction - risk of injury!

Clean using an alcohol-based solution or acetone.

62

Instruction manual V 1.4 – 02/2007

Knife holder E

84

11

86

87

8. Cleaning and maintenance

9

83

11

10

Fig. 61

Take the knife holder apart for cleaning. To do
so, proceed as follows:

• Fold the knife guard (9) and ejector (84)
downward.

Rotate the clamping lever (11) of the lateral dis-

•

placement forwards and pull it out sideways.

• Push the knife holder base plate (86) with
the pressure plate (83) until it can be
removed from the segment arch (87).

• Rotate the blade clamping lever (10) down­ward and pull it out sideways.

• Remove pressure plate (83).

• Clean all parts of the knife holder.

If several knife holders are cleaned at
the same time, the parts must not be
mixed up!

For cleaning and removal of paraffin, do
not use xylene or cleaning fluids con­taining alcohol (e.g. glass cleaner).

86

83

Leica RM2245

10

Fig. 62

• Dry knife holder and reassemble.

• After cleaning the moving parts, apply a thin
coat of drive part oil to them (see also

Chapter 8.2.3).

• When installing the pressure plate (83),
ensure that the upper edge is parallel to and
level with the rear edge of the knife holder
base (86) (see also

Fig. 38, Page 45).

63

8. Cleaning and maintenance

Universal cassette clamp

• Detach cassette clamp (13) for a thorough cleaning, removing all

60

13

Fig. 63

paraffin residues.

• For cleaning, do not use xylene. Use xylene substitutes or paraffin
removers such as "Para Gard".

• The cassette clamp (13) can also be placed in an oven heated to a
maximum of 65 °C, until the liquid wax escapes.

• Remove paraffin residues with a dry cloth.

• After such a cleaning procedure in an oven, always be sure to
lubricate the axle and spring of the clamping lever (60) (see also

chapter 8.2.3).

8.2.1 Replacing fuses8.2 Maintenance

21

22

Switch the unit off and unplug it. Use only
the supplied replacement fuses. Both
fuses must have the same rating (check
the imprint!).

• Insert a small screwdriver into the cutout
(25) and carefully pry out the insert.

25

24 2123

• Remove the voltage selector housing (21)
together with the fuses (23).

• Remove the fuses. While doing so, leave the
voltage selector switch block (24) in the
housing.

• Replace defective fuses and reinstall the
voltage selector into the instrument.

• Check that the correct voltage value is
displayed in the viewing window (22).

Fig. 64

64

Instruction manual V 1.4 – 02/2007

8. Cleaning and maintenance

8.2.2 Maintenance instructions

Only authorized and qualified service personnel may access the internal components of
the instrument for service and repair!

The instrument is basically maintenance-free.
To ensure trouble-free operation of the instrument over a long period of time, the following is

recommended by Leica:

1. Thoroughly clean the instrument on a daily
basis.

2. Enter into a service contract at the latest at
the end of the warranty period. For more in­formation, please contact your local Leica
technical service center.

We recommend the following inspection intervals depending on the general workload of the
instrument as defined in the three categories listed in the table:

3. Have the instrument inspected on a regular
basis by a qualified service technician
authorized by Leica.

The intervals depend on how heavily the
instrument is used.

Number of sections per day:

Workload (hours per day):

Sectioning speed:

Specimen material:

Maintenance:

↓↓

↓

↓↓

Leica RM2245

Category I

> 8.000 sections per day

> 5 hours per day

Predominantly high sectioning
speed

Working with soft and hard
specimens

Every 12 months

Category II

< 8.000 sections per day

< 5 hours per day

Slow to medium sectioning
speed

Predominantly soft specimen
material

Every 24 months

Note for inspection

• When the instrument reaches approx. 2 million performed strokes, the
code SEr always appears for approx. 3 seconds in the three-digit
display when the TRIM/SECT button is pressed
(switching between trimming and sectioning mode).
This is a reminder that the instrument must be inspected by an
authorized Leica service technician, regardless of how heavily the
instrument has been used.

65

8. Cleaning and maintenance

95

8.2.3 Lubricating the instrument

Once a month, lubricate the following parts with
the included drive parts oil No. 405 (1 - 2 drops
are enough).

96

Instrument and specimen holder:

• The clamping key (95) of the quick clamping
system.

• The T-piece (55) on the microtome base

55

plate.

• Guide rails (96) for the knife holder base on

56

the microtome base plate.

• The T-piece on the knife holder base (56).

11

88

10

Knife holder E:

• Clamping lever (11) for the lateral displace­ment.

• T-piece (88) and guide (97) of the knife

97

holder for the lateral displacement.

• Clamping lever (10) for the blade.

66

Knife holders N and NZ:

• Sliding surfaces of the finger guard (8).

91

90

8

• Knurled nuts (73) for measuring height
adjustment.

Universal cassette clamp:

• Shaft (90) and flat coil spring (91) of the
clamping lever of the cassette clamp. After
lubrication, move the lever back and forth

73

Fig. 65

several times.

Instruction manual V 1.4 – 02/2007

Warranty

Service information

9. Warranty and service

Leica Microsystems Nussloch GmbH guarantees that the contractual
product delivered has been subjected to a comprehensive quality control
procedure based on the Leica in-house testing standards, and that the
product 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
agreement. The warranty terms of your Leica sales organization or the or­ganization from which you have purchased the contractual product shall
apply exclusively.

If you are in need of technical customer service or spare parts, please
contact 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 local applicable regulations.
Special attention should be paid to the lithium cell of the electronic circuit
board!

Leica RM2245

67

10. EC Declaration of Conformity

EC Declaration of Conformity

We herewith declare, in exclusive responsibility, that the

Leica RM2245 – Rotary Microtome

was developed, designed and manufactured to conform with the

• Council Directive 73/23/EEC, (Low Voltage),

• Council Directive 89/336/EEC, Appendix I (Electromagnetic Compatibility) and

• European council Directive 98/79/EC (IVD)
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 61010-2-101: 2002

Safety requirements for electrical equipment for measurement, control and laboratory use ­Part 2-101: Particular requirements for in vitro diagnostic (IVD) medical equipment

• EN 61326-1: 1997 + A1: 1998 + A2: 2001 + A3: 2003

Electrical equipment 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 equipment 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

January 12, 2004

. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Dag Graupner

Managing Director