Troubleshooting; Repair And Maintenance - VWR VisiScope 300 Serie Manual De Instrucciones

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Troubleshooting

Review the information in the table below to troubleshoot operating problems.
PROBLEM
LIGHT DOESN'T TURN ON
IMAGE CANNOT BE SEEN OR
IS DARK.
IMAGE IS UNCLEAR, BLURRED
OR HAS INSUFFICIENT
CONTRAST.

Repair and maintenance

Microscopy environment
This microscope is recommended to be used in a clean, dry and shock free environment with a temperature
of 0-40°C and a maximum relative humidity of 85 % (non condensing). Use a dehumidifier if needed.
To think about when and after using the microscope
The microscope should always be kept vertically when moving it and be careful so that no moving parts, such
as the eyepieces, fall out. Never mishandle or impose unnecessary force on the microscope.
Never attempt to service the microscope yourself.
After use, turn off the light immediately, cover the microscope with the included dust-cover, and keep it in a
dry and clean place.
Electrical safety precautions
Before plugging in the power supply, make sure that the supplying voltage of your region matches with the
operation voltage of the equipment and that the lamp switch is in off-position.
Users should observe all safety regulations of the region. The equipment has acquired the CE safety label.
However, users do have full responsibility to use this equipment safely.
Cleaning the optics
If the optical parts need to be cleaned try first to: use compressed air. If that is not sufficient: use a soft lint-free
piece of cloth with water and a mild detergent. And as a final option: use the piece of cloth moistened with a
3:7 mixture of ethanol and ether. Note: ethanol and ether are highly flammable liquids. Do not use them near
a heat source, near sparks or near electric equipment. Use these chemicals in a well ventilated room.
CAUSE
Power supply not plugged.
Potentiometer
Optical head out of focus
Brightness level is low
Photo tube inserted
Objectives or filters are dirty. Wipe them clean.
Optical head out of focus
Eyepieces set incorrectly
10
SOLUTION
Check that the power supply cable is
well inserted on the rear of the micro-
scope.
Rotate the brightness adjustment
potentiometers and check if there is an
increase in the light output.
Change the height of the head until you
reach the correct focus.
Rotate the brightness adjustment po-
tentiometers.
If not using a camera, check that
the path selection lever is fully
inserted into the head (photo output
disabled).
Change the height of the head until you
reach the correct focus.
Check the eypieces are set to "zero"
position of dioptric compensation (rota-
ting the ring below each eyepiece).

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