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SCAN
®
10, digital, 1064 nm, f = 254 mm
Rev. 2.6 e
7 Routine Maintenance and Customer Service
31
innovators for industry
7
Routine Maintenance and Customer Service
7.1 Routine Maintenance of the
Optical Surfaces
Dirty objectives and mirrors increase the absorption
of laser power by their respective optical surfaces.
Dirt, dust and other contaminants can distort the
laser beam, burn into the surface and damage the
optical elements. The warranty does not cover any
damage due to improper use, cleaning or handling.
Routine Maintenance of the Mirrors
The deflection mirrors are especially sensitive compo-
nents and should not be touched or removed from
the scan head. Nevertheless, you must regularly
inspect the mirrors for dirt, dust and other contami-
nants. The mirrors must also be inspected after a long
storage time.
If inspection reveals dust particles, then remove them
by blowing air on the mirror’s surface with the help
of a rubber squeeze bulb or a source of compressed
clean air.
If the dust cannot be removed in this manner, or if
inspection reveals more serious contamination, then
contact SCANLAB for guidance. In extreme cases, the
complete scan head must be returned to SCANLAB
for inspection and cleaning of the mirrors. However,
in some situations SCANLAB might be able to recom-
mend a user-performed special cleaning procedure.
Routine Maintenance of the Objec-
tive’s Optical Surface
The outermost optical surface of the scan head’s
objective is cleanable by the user. Regularly check the
scan head’s objective. If dirt, dust or other contami-
nants are found, clean the objective’s optical surface
as follows:
Using a rubber squeeze bulb or compressed clean
air, blow air on the objective’s surface to remove
dust and dirt particles. If the objective is still not
clean, then use solvent and lens cleaning tissues
as described below:
(1)
Create a lens-tissue brush by folding a clean lens
tissue so that the fold is about half as wide as the
objective’s lens surface.
(2)
Dampen the lens-tissue brush with solvent. Don’t
use too much solvent, because otherwise drying
marks might appear.
(3)
Carefully grip one end of the dampened lens-
tissue brush without touching any part of the
tissue that will touch the lens surface.
(4)
Place the dampened lens-tissue brush in the
center of the objective’s lens surface. Then use a
circular
motion to wipe slowly but steadily from
the center of the optic around to the outer edges.
Repeat the above procedure until the objective’s
optical surface is completely clean. For each cleaning
swipe, create a new lens-tissue brush.
Cleaning Notes
• Avoid skin contact with the optic.
• Use only clean lint-free tissues specially manu-
factured for cleaning optics (e.g. "Kodak lens
cleaning paper"). Always use lens tissues with
a solvent, because dry tissue can scratch
optical surfaces.
• Use a solvent such as acetone or isopropanol
of high purity (evaporation residue < 0.001%).
Read and follow the safety advice and warn-
ings for the solvents you will be using.
• Use clean gloves or finger cots that are imper-
meable to the organic cleaning solvents you
will be using.
• Always wipe slowly but steadily, using a
circular motion from the center of the optic
around to the outer edges. Do not rub back
and forth!
• Only wipe with slight pressure!