MAINTENANCE AND FAULT FINDING
EPT031055 Issue 2 September 2017 5-3
CHECKING FANS AND AIR VENTS
The fans are located at the lower side of the control unit.
A fan defect immediately poses a danger of overheating that may
result in damage to the control unit, therefore the fans must be
checked once a month.
Control Unit Fans
(1) Check the fans for bearing noise. If bearing noise exists, the
respective fan must be replaced.
(2) Check the fan filters of the controller for blockages and dirt. If
necessary exchange them. The doors have to be opened to
exchange the filters.
CLEANING THE LENS
The lens must be checked monthly for dust, and if necessary be cleaned
with (absolutely clean) compressed air from a can.
For all other dirt, the lens must be cleaned with Isopropyl Alcohol and lens
paper, or cotton swabs (Q-tips), as follows:
(1) Take an unused cotton swab (Q-tip) and soak one end in Isopropyl
Alcohol.
(2) Lightly wipe with ONE PASS ONLY across the surface of the lens.
WARNING: Before undertaking any work on the
laser marking system, remove the
mains power plug.
WARNING: Ensure the mains power plug is
removed before cleaning the lens.
CAUTIONS: (1) Do not use compressed air from the
installation for cleaning.
(2) Water must not be used for cleaning, as the
lenses are not water resistant.
(3) Clean carefully as there is a risk of scratch
marks in the lens which will reduce the
marking quality.
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