HEALTH & SAFETY
L025317 Issue 1 March 2011 1-7
SPECIFIC DANGERS
Electrical Energy
In the D-Series laser marking system, the maximum operating voltage is the
connected mains voltage, which can pose a hazard to health. The mains
voltage to be maintained is shown on the name plate.
Work on live components must only be performed by authorised personnel.
In the case of a defective power supply, operation of the laser marking system
is to be stopped immediately and is only to be repaired by authorised
personnel.
Keep the control unit closed at all times. Only expressly authorised personnel
are permitted to open the control unit.
Compressed Air
The laser print head (D120 IP, D320 IP) is cooled by compressed air.
Overpressure inside the laser print head can damage the printer cabinet and
lead to personal injury.
The maximum pressure for the compressed air supplied into the print head is
3.5 bar. This Pressure must not be exceeded at any time.
The laser print head has two air outlets. Both air outlets must be kept clear as
blocked air outlets can cause overpressure inside the print head.
The compressed air must be free of oil (Class 1.7.2 of ISO 8573).
Do not swap the air inlet and outlet. The length of the compressed air outlet
hose must not exceed 4m!
Laser Radiation
Laser radiation can pose a risk to eyes and skin. The danger is not only posed
by direct laser radiation, but also by scattered radiation and reflections from
the work piece or the packaging machine. The degree of injury depends on
the duration of the effect, the power and the wavelength of the laser.
Lasers and their installations are classified into seven laser protection classes,
depending on their potential danger. Class 1 is the safest and Class 4 is
potentially the most harmful. These classes are defined in detail in EN60825
Part 1 and are summarised below:
Class 1 The accessible laser radiation may be visible or invisible and is
harmless.
Class 1M The accessible laser radiation may be visible or invisible and is
harmless, provided additional optical instruments are not used.
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