KERN OBE 112, OBE 113, OBE 111 User Instructions
OBE-1-BA-e-1510
KERN & Sohn GmbH
Ziegelei 1
D-72336 Balingen
E-mail: info@kern-sohn.com
Tel: +49-[0]7433- 9933-0
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com
User instructions
Compound laboratory
microscope
KERN OBE 111, OBE 112, OBE 113
Version 1.0
01/2015
OBE-1-BA-e-1510 2
GB
KERN OBE-1
Version 1.0 01/2015
User instructions
Compound microscopes
Table of contents
1 Before use .................................................................................... 3
1.1 General notes ............................................................................................................................ 3
1.2 Notes on the electrical system ................................................................................................ 3
1.3 Storage ...................................................................................................................................... 4
1.4 Maintenance and cleaning ....................................................................................................... 4
2 Nomenclature ............................................................................... 5
3 Technical data / model outfit ....................................................... 7
4 Assembly ...................................................................................... 8
4.1 Lenses ....................................................................................................................................... 8
4.2 Condenser ................................................................................................................................. 8
4.3 Head ........................................................................................................................................... 8
4.4 Eyepieces .................................................................................................................................. 8
5 Operation ...................................................................................... 9
5.1 Getting started .......................................................................................................................... 9
5.2 Adjust the gap between the eyes (only for OBE 112, OBE 113) .......................................... 9
5.3 Adjusting the magnification .................................................................................................... 9
5.4 Adjust the brightness............................................................................................................. 10
5.5 Dioptre compensation and focussing .................................................................................. 10
6 Storage ....................................................................................... 11
7 Maintenance ............................................................................... 11
7.1 Changing the bulb .................................................................................................................. 11
7.2 Changing the fuse .................................................................................................................. 11
8 Trouble shooting ........................................................................ 12
9 Service ........................................................................................ 14
10 Disposal ...................................................................................... 14
11 Further information .................................................................... 14
3 OBE-1-BA-e-1510
1 Before use
1.1 General notes
You must open the packaging carefully, to make sure that none of the accessories in
the packaging fall on the floor and get broken.
In general, microscopes should always be handled carefully because they are
sensitive precision instruments. When using or transporting the microscope it is
particularly important to avoid abrupt movements, as this may damage the optical
components.
You should also avoid getting dirt or finger prints on the lens surface, because in
most cases this will reduce image clarity.
To maintain the performance of the microscope, it must never be disassembled. So
components such as lenses and other optical elements should be left as they were
before use. Also the electrical parts in the base of the device must not be tampered
with, as in this area there is an additional risk of triggering an electric shock.
1.2 Notes on the electrical system
Before connecting to a mains power supply, you must make sure that you are using
the correct input voltage. The information to select the correct mains cable is located
on each device, on the rear of the product directly above the connection socket. You
must comply with this information. If you do not comply with these specifications, then
fires or other damage to the device could occur.
The main switch must also be switched off before the mains cable is connected. In
this way you will avoid triggering an electric shock.
If you are using an extension cable, then the mains cable you use must be earthed.
If the original fuse should blow, it must only be replaced by an appropriate fuse.
Suitable replacement fuses are included with the delivery.
When carrying out any procedures whereby you come into contact with the electrical
system of the device, such as, for example, changing the bulb or fuse, only carry out
these procedures when the power is disconnected.
OBE-1-BA-e-1510 4
1.3 Storage
You should ensure that the device is not exposed to direct sunlight, temperatures
which are too high or too low, vibrations, dust or a high level of humidity. The ideal
temperature range is between 0 and 40°C and a relative humidity of 85% should not
be exceeded. The device should always be located on a rigid, smooth, horizontal
surface.
When the microscope is not being used, you should fit the lens cap and cover the
microscope with the enclosed dust protective cover. If the eyepieces are being stored
separately, the protective caps must be fitted to the lens barrels. In most cases, if
dust and dirt gets inside the optical unit of a microscope this can cause irreversible
errors or damage. The best way to store accessories which consist of optical
elements, such as, for example, eyepieces and lenses, is in a dry box with desiccant.
1.4 Maintenance and cleaning
In any event, the device must be kept clean and dusted regularly. If any moisture
should be occur, before you wipe down the device you must ensure that the mains
power is switched off.
When glass components become dirty, the best way to clean them is to wipe them
gently with a lint-free cloth.
To wipe oil stains or finger prints off the lens surface, moisten the special lint free
cleaning cloth with a mixture of ether and alcohol (70 / 30 ratio) and use this to clean
the lens.
You must be careful when handling ether and alcohol, as these are highly flammable
substances. You must therefore keep it away from naked flames and electrical
devices which can be switched on and off, and only use it in well-ventilated rooms.
However organic solutions of this type should not be used to clean other components
of the device. This could lead to damage to the paint finish. To do this, it is sufficient
to use a neutral cleaning product.
You could also use the following cleaning products to clean the optical components:
Special cleaner for optical lenses
Special optical cleaning cloths
Bellows
Brush
When handled correctly and checked regularly, the microscope should give many
years of efficient service. Should repairs still be necessary, please contact your
KERN dealer or our Technical Department.
5 OBE-1-BA-e-1510
2 Nomenclature
Eyepiece
Head
Adjusting screw
Head
Lens revolving unit
Lens
Object holder
Specimen stage
Aperture adjustment
Condenser
Condenser
Field lens
Control dial
X – Y axis
Specimen
stage
Fine
adjustment
knob
Coarse
adjustment
knob
Main On/Off
switch
+ dimmer
Lens barrel connectors
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