KERN Optics OBN-13, User Instructions

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21 OBN-13-BA-e-1510
6
Changing the bulb
Halogen
You must not attempt to change the bulb immediately after the microscope has been
used, as the bulb will still be hot and so there is a risk that the user could be burnt.
Before changing the bulb the device must be switched off and unplugged.
To change the bulb, tip the device carefully to the back or side. When doing this,
please make sure that all microscope components are firmly fixed. The bulb holder is
on the underside of the device. It can be opened by undoing the screws on the holder
(see illustration) . We recommend that here you should also test again, to check that
heat is no longer being produced. The defective bulb can be pulled out of the socket
and be replaced with a new one. After the bulb holder has been replaced in the
underside of the device and the screws replaced, the bulb replacement procedure is
complete.
Important:
When fitting the new bulb into the socket, it must only be handled with sterile gloves
or using the bulb packaging film. Grease and dust residue can have a negative effect
on the light quality and service life.
7
Changing the fuse
The fuse housing is on the rear of the microscope below the mains power supply
socket. With the device switched off and unplugged, you can pull out the housing.
When doing this, it is helpful to use a screwdriver or similar tool. The defective fuse
can be removed from its housing and be replaced with a new one.
After that, you just need to insert the fuse housing back into the insertion point below
the mains power supply socket.