Ryobi P222 Manual Del Operador página 7

 Depress the switch trigger to start the tool.
 Move the bit into the workpiece, applying only enough
pressure to keep the bit cutting. Do not force the tool or
apply side pressure to elongate a hole. Let the tool do
the work.
WARNING:
Be prepared for binding at bit breakthrough. When these
situations occur, the tool has a tendency to grab and kick
opposite to the direction of rotation and could cause loss
of control when breaking through material. If not prepared,
this loss of control can result in possible serious injury.
 When drilling hard, smooth surfaces, use a center punch
to mark the desired hole location. This will prevent the bit
from slipping off-center as the hole is started.
 If the bit jams in the workpiece or if the tool stalls, stop
the tool immediately. Remove the bit from the workpiece
and determine the reason for jamming.
NOTE: This tool has an electric brake. When the switch
trigger is released, the chuck stops turning. When the brake
is functioning properly, sparks will be visible through the
vent slots on the housing. This is normal and is the action
of the brake.
NOTICE:
During extended periods of use, it is possible that lubri-
cation may leak from the gearbox. This is a normal oc-
currence and does not indicate a problem with the tool.
Avoid placing the tool on an unprotected surface to avoid
possible property damage.
WOOD AND METAL DRILLING
For maximum performance, use high speed steel bits for
wood or metal drilling. Select drilling mode. Begin drilling
at a very low speed to prevent the bit from slipping off the
starting point.
NOTICE:
When using the tool, do not apply too much pressure. Too
much pressure will place unnecessary load on the motor.
OPERATION
WOOD DRILLING
 Select Rotational Drilling Mode.
 Increase the speed as the drill bit bites into the material.
 When drilling through holes, place a block of wood behind
the workpiece to prevent ragged or splintered edges on
the back side of the hole.
METAL AND STEEL DRILLING
 Select Rotational Drilling Mode.
 Use a light oil on the drill bit to keep it from overheating.
The oil will prolong the life of the bit and increase the
drilling action.
 Maintain a speed and pressure which allows cutting
without overheating the bit. Applying too much pressure
will:
• Overheat the drill;
• Wear the bearings;
• Bend or burn bits; and
• Produce off-center or irregular-shaped holes.
 When drilling large holes in metal, start with a small bit,
then finish with a larger bit.
MASONRY DRILLING
See Figures 5 and 6, page 10.
For maximum performance, use carbide-tipped masonry
impact bits or designated hammer drill bits when drilling
holes in brick, tile, concrete, etc.
 Select Rotary Hammer Mode.
 Apply light pressure at medium speed for best results in
brick.
 Apply additional pressure for hard materials such as
concrete.
 When drilling holes in tile, practice on a scrap piece to
determine the best speed and pressure. Begin drilling at
a very low speed to prevent the bit from slipping off the
starting point.
CHISELING
See Figures 5 and 7, page 10.
 Select Chisel Only Mode.
 Position the tip of the chisel at the point where chiseling
is to begin.
 Apply light pressure and medium speed for best results in
brick or tile. Apply additional pressure for hard materials
such as concrete.
 Selecting Chisel Adjust Mode allows the bit to rotate
freely to the best operating position for your chiseling
application.
7 — English