Dremel 300 Série Traduction De La Notice Originale page 20

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  • FRANÇAIS, page 27
a better end result. To achieve the best results when working
with different materials, set the variable speed control to suit the
job. To select the right speed for the accessory in use, practice
with scrap material fi rst.
NOTE: Speed is affected by voltage changes. A reduced incoming
voltage will slow the RPM of the tool, especially at the lowest
setting. If your tool appears to be running slowly, increase the
speed setting accordingly. The tool may not start at the lowest
switch setting in areas where outlet voltage is less than 220
volts. Simply move the speed setting to a higher position to begin
operation.
The 300 Series multitool switch settings are marked on the
speed control switch. Refer to the Speed Settings chart on pages
4-6 to help determine the proper speed for the material being
worked on and the accessory to use.
A) For use on dry wall. For best results use at 33.000 RPM.
B) For use on wall and fl oor grout. Use setting 6-8.
*) Speed for light cuts. Caution, burning on deep grooves
possible.
) Depending on cutting direction relative to grain.
Most jobs can be accomplished using the tool at the highest
setting. However, certain materials (some plastics and metals)
can be damaged by high-speed generated heat and should
be worked on at relatively low speeds. Low speed operation
(15,000 RPM or less) is usually best for polishing operations
employing the felt polishing accessories. All brushing
applications require lower speeds to avoid wire discharge from
the holder. Let the performance of the tool do the work for you
when using lower speed settings. Higher speeds are better for
hardwoods, metals and glass and for drilling, carving, cutting,
routing, shaping and cutting dadoes or rabbets in wood. The
settings for approximate RPM's are:
Switch Setting
Speed Range
1-2
10,000-14,000 RPM
3-4
15,000-19,000 RPM
5-6
20,000-24,000 RPM
7-8
25,000-29,000 RPM
9-10
30,000-33,000 RPM
Some guidelines regarding tool speed:
Plastic and other materials that melt at low temperatures
should be cut at low speeds.
Polishing, buffi ng and cleaning with a wire brush must be
done at speeds not greater than 15,000 RPM to prevent
damage to the brush and your material.
Wood should be cut at high speed.
Iron or steel should be cut at high speed.
If a high speed steel cutter starts to vibrate, it usually
indicates that it is running too slow.
Aluminium, copper alloys, lead alloys, zinc alloys and tin
may be cut at various speeds, depending on the type of
cutting being done. Use a paraffi n (not water) or other
suitable lubricant on the cutter to prevent the cut material
from adhering to the cutter teeth.
NOTE: Increasing pressure on the tool is not the answer when it is
not performing properly. Try a different accessory or speed setting
to achieve the desired result.
MAINTENANCE
Preventative maintenance performed by unauthorized personnel
may result in misplacing of internal wires and components which
could cause serious hazard. We recommend that all tool service
be performed by a Dremel Service Facility. To avoid injury from
unexpected starting or electrical shock, always remove plug from
wall outlet before performing service or cleaning.
CARBON BRUSHES
The brushes in your tool have been engineered for many hours
of dependable service. To prepare the brushes for use, run the
tool at full speed for 5 minutes under no load. This will properly
"seat" the brushes, and extend the life of the tool. To maintain
peak effi ciency of the motor, examine the brushes for wear every
40-50 hours.
Using the tool with worn brushes will permanently damage the
motor. Use only original Dremel replacement brushes.' Inspect
the multitool brushes after 40-50 hours of use. If the multitool
runs erratically, loses power, or makes unusual noises check the
brushes for wear and possible replacement. Follow these steps
to check/change the multitool brushes:
1. With the power cord unplugged, place the tool on a clean
surface. Use the tool wrench as a screwdriver to remove the
brush caps. PICTURE 9
2. Remove the brushes from the tool by pulling on the spring that
is attached to the carbon brush. If the brush is less than 3mm
long and the surface of the brush that touches the commutator
is rough or pitted, the carbon brushes should be replaced. Be
sure to check both brushes. PICTURE 10
3. If one brush is worn, you should replace both brushes for
better performance of your multitool. Remove the spring
from the brush, throw away the old brush and place the
spring on a new brush.
4. Place the carbon brush and spring back into the tool, there
is only one way the brush will fi t back into the tool.
5. Replace the brush caps onto the tool by turning the cap in
a clockwise direction. To tighten, use the wrench, but DO
NOT OVER TIGHTEN! After replacing the brushes the tool
should be run at no load; place it on a clean surface and
run it freely at full speed for 5 minutes before loading (or
using) the tool. This will allow the brushes to "seat" properly
and will give you more hours of life from each set of
brushes. This will also extend the life of your tool since the
commutator surface will also wear better and longer.
CLEANING THE TOOL
DISCONNECT THE PLUG BEFORE CLEANING
Ventilation openings and switch levers must be kept clean and
free of foreign matter. Do not attempt to clean by inserting
pointed objects through openings.
The tool may be cleaned with compressed air. Always wear safety
goggles when cleaning tool with compressed air.
There is no need to lubricate the Dremel multitool.
20

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