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Page 22 Instruction manual 50100XXX Version 3 November-07
Resolution: It is the reciprocal value of the separating power, that is to say, the smallest
distance between two points on a sample that can still be distinguished as two separate
entities. It is expressed in lines/mm.
Number of field:
It expresses the diameter (mm) of the field's diaphragm that is composed
by the eyepiece.
Field of view:
Dimensions of the real field we are observing, expressed in millimetres.
4. INSTALLATION / SETTING UP
Preliminary inspection
Unwrap the microscope, take off the involving plastic and take off the poliespan pro-
tection in which it comes fitted. Take off all the protective items and, without connecting
the microscope to the net, make sure that it does not present any damage because of the
shipment. In case the microscope presents any damage tell it immediately to your trans-
port agent or dealer so that they can make the claims in the correct time limit.
Please keep the original wrapping; you will always need it for returns enclosed with all
the accessories supplied.
Please check that all the accessories are enclosed with the equipment:
- Estative
- Head (depending on the model)
- Objectives (depending on the model)
- Eyepieces (depending on the model)
- Standard Shuko cable
(10A, 250V, UNE 20356, EN 60 320)
- Set of filters (green and blue)
We will not accept any equipment in return period unless it comes in its original wrapping.
Installation
Before using this instrument, it is convenient for you to familiarize with its components
and basic essentials.
Please put the microscope on top of a horizontal, plane and stable table making a free
space at least at 30 cm per side. Do not put the microscope near any warm supply (bur-
ners, blowlamps…), nor expose it directly to the sun, etc.
Avoid inflammable or toxic substances in the working area.
The microscope is supplied with a Schuko standard wire
Please insert the wire that feeds the AC electric current in the base of current 220V 50Hz
±10% provided with earth wire and to the other end to the microscope connector.
- Stand and mirror for life lighting
- Spare halogen lamp of 6V 20W
- Immersion oil
- Fuse
- Plastic cover
- Instruction manual
- Warranty certificate
PLEASE READ THOROUGHLY THE INSTRUCTIONS BEFORE CONNECTING
AND OPERATING WITH THIS EQUIPMENT.
Version 3 November-07 Instruction manual 50100XXX Page 27
7. CAUSES OF A DEFECTIVE IMAGE
In case of a defective image you should check the following:
Illumination is well done and luminous intensity is neither excessive nor too weak. You
should never adjust it with the condenser's diaphragm. Both the condenser and the lamp
should be well centred. Check that between the field diaphragm and the aperture diaph-
ragm there is not any diffuser filter.
Eyepieces are well fit and objectives well screwed.
When cleaning the entire optical system you should proceed as follows:
- Make the eyepieces turn checking the little specks are moving; if so you should clean
them. Make the head turn. You should never disassemble the head, but you can clean it
with delicacy by blowing the accessible surfaces of prisms with a plastic bulb.
- Turn the objective and, in case the parasite images also turn, clean it with the help of
a dry brush to remove the dust. Watch the front part of the microscope with a magnifying
glass or an inverted eyepiece.
Immersion oil is enough and does not contain air bubbles or impurities.
Thickness of slides, cover glasses and means of assembly is not too much as to avoid
focusing with medium or high magnification (there are standard sizes for both the slides
and cover glasses). Slides and cover glasses should be clean. Check that the slide is pro-
perly located and there are not two cover glasses superimposed.
8. TROUBLESHOOTING
Before sending the microscope back to Ura Technic Technical Assistance Department
you should check the following:
If the lamp does not switch on:
Check it is properly connected to the right current intake.
Check both fuse and lamp are in good conditions. If not you should replace the fuse.
If the field of vision is cut:
Check the nosepiece is properly fit. To do that, turn it slightly back and forth until it fits.
Check it is well centred. This operation is done by means of three screws that surround
the condenser's mount.
If ther
e is dust or dirt in the field of vision:
Check there is dust on the precondenser's lens, upper lens of the condenser or the eye-
piece, as well as the cleanliness of the sample. Once you find out where the dirt is you
should clean it as explained before.
If the sample gets fuzzy while observing:
Check the tension adjusting ring, as it may be too weak and provoke an involuntary fall
of the stage.
If an ar
ea in the field of vision is out of focus:
Check the objective is properly located on the luminous beam's path. If not you should
turn it until it is appropriate position.
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