Makita DDA450 Manual De Instrucciones página 10

Drilling operation
Drilling in wood
When drilling in wood, the best results are obtained
with wood drills equipped with a guide screw. The guide
screw makes drilling easier by pulling the drill bit into
the workpiece.
Drilling in metal
To prevent the drill bit from slipping when starting a
hole, make an indentation with a center-punch and
hammer at the point to be drilled. Place the point of the
drill bit in the indentation and start drilling.
Use a cutting lubricant when drilling metals. The excep-
tions are iron and brass which should be drilled dry.
CAUTION:
Pressing excessively on the tool
will not speed up the drilling. In fact, this excessive
pressure will only serve to damage the tip of your drill
bit, decrease the tool performance and shorten the
service life of the tool.
CAUTION:
Hold the tool firmly and exert care
when the drill bit begins to break through the
workpiece. There is a tremendous force exerted on
the tool/drill bit at the time of hole break through.
CAUTION:
A stuck drill bit can be removed
simply by setting the reversing switch to reverse
rotation in order to back out. However, the tool
may back out abruptly if you do not hold it firmly.
CAUTION:
Always secure workpieces in a
vise or similar hold-down device.
CAUTION:
Avoid drilling in material that you
suspect contains hidden nails or other things that
may cause the drill bit to bind or break.
CAUTION:
If the tool is operated continuously
until the battery cartridge has discharged, allow
the tool to rest for 15 minutes before proceeding
with a fresh battery.
Lanyard (tether strap) connection
Safety warnings specific for use at height
Read all safety warnings and instructions. Failure
to follow the warnings and instructions may result in
serious injury.
1. Always keep the tool tethered when working
"at height". Maximum lanyard length is 2 m
(6.5 ft).
The maximum permissible fall height for lan-
yard (tether strap) must not exceed 2 m (6.5 ft).
Use only with lanyards appropriate for this tool
2.
type and rated for at least 5.0 kg (11.0 lbs).
Do not anchor the tool lanyard to anything on
3.
your body or on movable components. Anchor
the tool lanyard to a rigid structure that can
withstand the forces of a dropped tool.
Make sure the lanyard is properly secured at
4.
each end prior to use.
5. Inspect the tool and lanyard before each use
for damage and proper function (including
fabric and stitching). Do not use if damaged or
not functioning properly.
6. Do not wrap lanyards around or allow them to
come in contact with sharp or rough edges.
7. Fasten the other end of the lanyard outside
the working area so that a falling tool is held
securely.
8. Attach the lanyard so that the tool will move
away from the operator if it falls. Dropped tools
will swing on the lanyard, which could cause injury
or loss of balance.
9. Do not use near moving parts or running
machinery. Failure to do so may result in a crush
or entanglement hazard.
10. Do not carry the tool by the attachment device
or the lanyard.
11. Only transfer the tool between your hands
while you are properly balanced.
12. Do not attach lanyards to the tool in a way that
keeps guards, switches or lock-offs from oper-
ating properly.
13. Avoid getting tangled in the lanyard.
14. Keep lanyard away from the cutting area of the
tool.
15. Use multi-action and screw gate type cara-
bineers. Do not use single action spring clip
carabineers.
16. In the event the tool is dropped, it must be
tagged and removed from service, and should
be inspected by a Makita Factory or Authorized
Service Center.
MAINTENANCE
CAUTION:
Always be sure that the tool is
switched off and the battery cartridge is removed
before attempting to perform inspection or
maintenance.
NOTICE:
Never use gasoline, benzine, thinner,
alcohol or the like. Discoloration, deformation or
cracks may result.
To maintain product SAFETY and RELIABILITY,
repairs, any other maintenance or adjustment should
be performed by Makita Authorized or Factory Service
Centers, always using Makita replacement parts.
10 ENGLISH