Dremel 8240 Traducción De Las Instrucciones Originales página 31

during operation by sliding the switch back or
forth between any one of the settings.
To select the right speed for each job, use
a practice piece of material.
OPERATING SPEEDS
Refer to the chart on pages 17-18 to help
determine the proper speed for the material
being worked on and the accessory to use.
Do not exceed 15,000 rpm when using wire
brushes.
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 and shaping.
Some guidelines regarding tool speed:
• Plastic and other materials that melt at low
temperatures should be cut at low speeds.
• Polishing, buffing and cleaning with a wire
brush must be done at speeds no 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 slowly.
• 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 paraffin (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.
A d
STALL PROTECTION
This tool has a stall protection feature built
into it to protect the motor and battery in the
event of a stall. If you put too much pressure
on the tool for too long, or bind the bit in a
work piece, especially at high speeds, the
motor will stop. Simply take the tool out of the
material you were stalled in, and the tool will
begin to spin again at the selected speed. If
the tool continues to stall for longer than 5
seconds, the tool will automatically shut itself
off. This additional feature further protects the
motor and the battery from damage. When the
battery becomes close to empty, the tool may
shut down automatically more frequent than
normal. If this happens, it is time to recharge
the battery.
MAINTENANCE AND CLEANING
NO USER SERVICEABLE PARTS
!
INSIDE. PREVENTIVE MAINTENANCE
PERFORMED BY UNAUTHORIZED
PERSONNEL MAY RESULT IN INCORRECT
CONNECTION OF INTERNAL WIRING AND
COMPONENTS WHICH COULD CAUSE
SERIOUS HAZARD.
The tool can be cleaned most effectively
with compressed dry air. Always wear
safety goggles when cleaning tools with
compressed air.
TO AVOID ACCIDENTS, ALWAYS
!
DISCONNECT THE TOOL AND/OR
CHARGER FROM THE POWER SUPPLY
BEFORE CLEANING
Ventilation openings and switch levers must be
kept clean and free of foreign matter. Do not
attempt to clean the tool by inserting pointed
objects through an opening.
CERTAIN CLEANING AGENTS AND
!
SOLVENTS DAMAGE PLASTIC PARTS.
Some of these are: gasoline, carbon
tetrachloride, chlorinated cleaning solvents,
ammonia and household detergents that contain
ammonia.
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