84
MAINTENANCE
and complete tension in the other.
Dremel lasers are delivered with the
proper amount of belt tension. It is
advisable to check belt tension when
the laser is new to establish a good
baseline for future reference. Simply
depress the belt lightly with your
fingers and note the deflection. The
belt should deflect about 1/4-1/2 inch
with a light force.
b. Tensioning the belt. Loosen the idler
pulley set screw. Pull on the Y idler
pulley mount by hand. Moderate to
strong force is recommended. Tighten
the idler pulley set screw. Repeat for
opposite side belt.
Exhaust Fan
Do not try to clean
exhaust ducting. The
high concentration of particles may
become airborne and create inhalation
exposure.
a. Clean the exhaust fan and exhaust
shroud.
After prolonged use, the fan performance
can diminish due to dust build up on the
fan blades and plenum. If the laser has
been used for a lot of woodcutting,
cleaning will need to be done more
frequently. Debris can stick to any
surface in its path. If fan noise or
vibration is detected, a good cleaning is
overdue.
Remove the flexible exhaust hose from
the exhaust shroud. With a clean soft
cloth, wipe the inside of the shroud to
remove all residue.
Inspect the flexible duct for debris. If the
diameter appears to be constricted,
replace exhaust duct with a UL181 listed
product.
With a soft cloth, clean the dust off the
fan blades. It will be necessary to remove
the fan from the enclosure.
Observe all provided warnings and safety instructions when using
the Dremel LC40. Failure to do so may result in fire, equipment
damage, property damage or personal injury.
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