Maintenance - Urrea RM812B Manual De Usuario

NOTE:
• Use sharp drill bits only.
• For wood, use twist-drill bits, spade bits,
power-auger bits, or hole saws.
• For metal, use high-speed, steel-twist drill
bits or hole saws.
• For masonry (brick, cement, cinder block,
etc.) use carbide-tipped drill bits.
• Be sure that the material to be drilled is an-
chored or clamped firmly.
• If drilling thin material, use a "back-up" block
in order to prevent damage to the material.
TO BEGIN DRILLING
1. When starting a hole, make a mark on the
surface of the workpiece, and then drill a small
hole.
2. Hold the drill firmly with both hands.
3. Depress the trigger switch to start the drill,
gradually increasing speed. For continuous or
extended operation, hold the lock-On button
while pulling the trigger switch.
4. Apply pressure in line with the bit. Use
enough pressure to keep the drill biting, but
do not push hard enough to stall the motor.
NOTE: If the drill begins to stall, reduce pres-
sure slightly in order to allow the bit to regain
speed. If the bit binds, reverse the motor to
free the bit from the workpiece.
5. After completing the drilling operation,
release the trigger switch, and allow the bit
to come to a complete stop before setting the
drill down.
6. When work has been completed, clean the
drill in order to allow for smooth operation of
the drill over time.
WARNING: To reduce the risk of injury, ne-
ver touch the bit in order to clean the debris
until the drill has stopped rotating and the bit
has cooled down.
DRILLING IN VARIOUS MATERIALS
1. Choose the hammer-drilling function when
drilling in hard masonry (concrete, hard brick,
stone, cement, or marble).
2. Choose the drilling function when drilling
in soft masonry (tile, flooring, soft brick, lime
cement, or cinder block),.
3. When drilling in a smooth surface, attach
adhesive paper at the drilling location in order
to prevent the bit from gliding.
14
DRILLING IN WOOD AND PLASTIC
1. Start the drill slowly, and increase speed
gradually.
2. When using twist drill bits, pull the bit out of
the hole frequently in order to clear chips from
the bit flutes.
3. Use low speeds for plastic that has a low
melting point.
DRILLING IN METAL
1. Lubricate drill bits with cutting oil when
drilling in iron or steel.
2. Do not use a lubricant when when drilling
in nonferrous metals, such as copper, brass or
aluminium.

MAINTENANCE

WARNING: Before each use, inspect the ham-
mer drill, ON/OFF trigger switch, and cord for
any damaged, missing, or worn parts. Check
for loose screws, misalignment or binding of
moving parts, or any other condition that may
affect the operation. If abnormal vibration or
noise occurs, turn the tool off immediately, and
have the problem corrected before further use.
WARNING: Before cleaning or perform-
ing any maintenance, the tool should be
unplugged from the power supply. Using com-
pressed air may be the most effective cleaning
method.
Always wear safety goggles when cleaning
tools with compressed air.
WARNING: Do not let brake fluid, gasoline,
petroleum-based products, penetrating oil,
etc., come in contact with plastic parts. These
substances contain chemicals that can damage,
weaken or destroy plastic.
WARNING: When servicing, use only identi-
cal replacement parts. Use of any other parts
may create a hazard or cause product damage.
WARNING: Use only accessories that are
recommended for the specific model by the
manufacturer. Accessories that may be suitable
for one tool may become hazardous when
used with another tool.