KERN OZL-45, User Instructions

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OZL-45-BA-e-1510
5.9 Changing the bulb
(OZL 451)
Halogen
Before changing the halogen bulb(s), you must always switch off the device and
unplug it from the mains. You must also make sure that the bulb and housing have
cooled down, so that you avoid any risk of possible burn injuries.
Please always use cloth gloves or similar to hold and fit the new bulb otherwise
grease and dust residue on the surface of the bulb could have a negative effect on its
brightness and service life.
To change the halogen bulb of a transmitted light unit, you must first undo the
screw for the bulb holder on the bottom of the stand, so that you can flip out the
plate .
Then you can simply pull the bulb out of its socket and replace it with a new one.
When you have done this, you must make sure that the bulb holder on the underside
of the stand is re-fitted properly.
Important: When changing the transmitted light bulb, it is helpful if you first remove
the holder and head of the microscope from the pillar . In this way you can easily
rotate the stand and replace the bulb.
To change the halogen bulb of a reflected light unit , you must first unscrew the bulb
housing with one hand. There is a risk here that the user could be burnt . Even if it is
only operated for a few minutes, the housing will heat up significantly .
You must be particularly careful when removing the housing, as the colour filter is
not fixed on the underside and can easily fall out , if it is rotated.
Then you can simply pull the bulb out of its socket and replace it with a new one.
Attention: When selecting a replacement bulb for the reflected light unit you must
use a halogen bulb connected to a screen which should improve the beam
characteristics.
5.10 Changing the fuse
(OZL 451)
The fuse, or its holder is fitted is on the rear of microscope stand base below the
mains connector.
If the fuse has blown, then with the device switched off and the power disconnected,
the fuse can easily be pulled out and replaced with a new fuse.
You can use a flathead screwdriver to help pull out the holder.