16
Fig. 13. Cold-light system
Switch for selecting the light exit
Intensity control
Holder for cold-light cable
Endoscope holder
4.2.5 Halogen cold-light system
Attention with the cold-light source!
Because of the high energy of the light there is a large
amount of heat emission at the point of the optical
system. Avoid too small a distance between the tissue
andtheeldoflightemissionofthelightguideresp.of
the endoscope, as this may cause coagulation of the
patient's tissue. When using the endoscope avoid the
direct contact between area of light emission and the
tissue.
Attention, Fire Hazard!
Do never place the area of light emission from the light
guide or from the endoscope onto heat-absorbing
surfaces (dark pieces of cloth, etc.), because this will
cause unacceptable high heating or even ignition of
the material. Switch off the light when you do not require
the light over a prolonged period of time.
The cold-light source used in the ATMOS
®
C 31 consists of
four halogen low-voltage lamps with a colour temperature
of 3300 K. The halogen lamps are only switched on if the
respective light exit is activated.
The brightness is individually adjustable for each of the
four light exits; a memory function realizes which optics are
used and guarantees the availability of the previously set
light performance with every use of the chosen instrument.
The light guide connectors are installed on the right side
of the function column.
The respective connections are marked with the
corresponding symbols:
Headlamp
Microscope
Light guide 1
Light guide 2
Starting the cold-light system
After having operated the main switch of the ATMOS
®
C 31
(
,g.1,page7)thecold-lightsourcechangesoverto
standby mode, i.e. none of the halogen lamps is switched
on.
• When removing a light guide resp. when swivelling
down the microscope or removing the headlamp from
its suspension the respective instrument is supplied
with light. Manual selection of a light exit on the foil
keyboard is, of course, possible at any time.
4.0 Operation
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