Preparation Before Surgery
21Leica HM500/Ref. 10 715 697/Version B
Leica MLS500 light source
Intended use: The Leica MLS500 light source serves as the illu-
mination system for the Leica HM500/HM500 Dental microscope.
The patented optics in the instrument focus the light arc of the
lamp via optics and mirrors to a light guide with a diameter of
1.5 mm. This process filters out the unwanted infrared radiation
(heat) and UV radiation (danger to skin). The fiber-optic light
guide guides the light to the microscope via total internal
reflection. The brightness can be regulated by means of a
mechanical diaphragm while keeping the color temperature
constant. In addition, filters can be swung in which make it
easier to work under special conditions.
Warning 4
Risk of eye injuries
➩Before starting up the Leica MLS500 light source make
sure that nobody will be dazzled by the light-emitting
optics on the headset.
➩Never look directly into the light outlets of the
Leica HM500 microscope, the Leica MLS500 light
source or the fiber-optic light guide when the instru-
ment is in operation.
➩Never direct the light beam directly onto the eye.
➩Never use the Leica MLS500 light source for eye
surgery or surgical procedures which require direct
illumination of the eye.
➩With the Leica MLS500 light source switched on and
the fiber-optic light guide unplugged, reduce the
brightness control of the Leica MLS500 light source to the
minimum level.
Warning 5
Risk of burn injuries
➩Never operate the fiber-optic light guide without micro-
scope optics.
➩Never touch the fiber-optic light guide plug once it has
been unplugged from the Leica MLS500 light source.
Always let the plug cool down.
➩Switch off the Leica MLS500 light source before
pulling out the fiber-optic light guide.
➩After use, unplug the fiber-optic light guide from the
Leica MLS500 light source to prevent light accidentally
being emitted from the optical outlet end of the fiber-
optic light guide.
➩Do not use a damaged or kinked fiber-optic light guide.
Warning 6
Risk to patients from failure of the Leica MLS500 light
source
➩Change the lamp before the end of its theoretical
service life.
Warning 7
Risk of explosion
➩Do not use the Leica MLS500 light source in areas
subject to explosion hazards.
➩Do not use the Leica MLS500 light source with flam-
mable mixtures such as anesthetics, oxygen or disin-
fectants.
Caution 8
Risk of fire damage
➩Keep a distance of at least 250 mm between the
microscope outlet optics and other objects.
Caution 9
Damage to the Leica MLS500 light source
➩Before using a defibrillator remove the Leica MLS500
light source from the operating area.
➩Do not operate the MLS500 light source near water or
in rooms with extreme humidity.
➩Never place flammable materials close to the
Leica MLS500 light source.
➩Keep the Leica MLS500 light source well away from
any heat sources.
➩Do not place any liquids on the Leica MLS500 light
source or spill any liquid over the Leica MLS500 light
source.
➩Keep the ventilation openings of the Leica MLS500
light source unobstructed so as to prevent overheat-
ing.
➩Ensure that the free circulation of air is not impeded
and that a distance of at least 10 cm is kept between
the ventilation openings and other objects.
➩The Leica MLS500 light source should only be used in
enclosed spaces.
➩Do not use the Leica MLS500 light source in spaces
that are too confined (such as boxes) to ensure suffi-
cient cooling and air circulation.
➩The area around the MLS500 light source should be
kept clean and free of dust and fluff so that the instru-
ment fans do not suck in any dirt.
➩Do not push objects into the Leica MLS500 light
source.
➩The MLS500 light source must be used with the power
cables provided (in the USA, "Hospital Grade" or
"Hospital Only" power cables in accordance with
UL817/UL498).
Never open the instrument or components unless
instructed expressly to do so in this manual.
Select the future location according to the following criteria:
➩ No high humidity (see Technical Data)
➩ Normal room temperature (see Technical Data)
➩ Keep ventilation slots unobstructed
➩ Not for use with flammable mixtures (such as anesthetic,
oxygen, disinfectant, etc.).
➩ Install the Leica MLS500 so that the power plug is accessi-
ble, allowing the light source to be disconnected from the
power supply.
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