Ryobi P252 Manual Del Operador página 8

CAUTION:
The metal surface may become hot during use. Avoid
contact with it to avoid possible burn injury.
To remove:
 Lock the switch trigger.
 Remove the battery pack.
 Pull the bit from the chuck chuck collet.
DRILLING / DRIVING SCREWS
See Figure 9, page 11.
 Check the direction of rotation selector for the correct
setting (forward or reverse).
 Use low (1) speed for high torque applications and high (2)
speed for fast drilling or driving applications. Refer to
Two-Speed Gear Train and Adjusting Torque.
 Secure the material to be drilled in a vise or with clamps
to keep it from turning as the drill bit rotates.
 Hold the drill firmly and place the bit at the point to be
drilled, or where the screw is to be driven.
WARNING:
Do not drive a screw where there is likely to be hidden
wiring behind the surface. Contact with a "live" wire will
make exposed metal parts of the tool "live" and possibly
shock the operator. If you must drive a screw where hid-
den wire may be present, always hold tool by insulated
gripping surfaces (handle) when performing the operation
to prevent a shock to the operator.
 Depress the switch trigger to start the drill.
 Move the bit into the workpiece, applying only enough
pressure to keep the bit cutting or driving the screw. Do
not force the drill or apply side pressure to elongate a
hole. Let the tool do the work.
NOTE: MAINTENANCE INSTRUCTIONS BEGIN ON PAGE 9
FOLLOWING FRENCH AND SPANISH LANGUAGE SECTIONS.
OPERATION
ILLUSTRATIONS START ON PAGE 10.
8 — English
WARNING:
Be prepared for binding at bit breakthrough. When these
situations occur, drill has a tendency to grab and kick op-
posite 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.
 With 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.
 When drilling metals, 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.
 If the bit jams in the workpiece or if the drill stalls, stop
the tool immediately. Remove the bit from the workpiece
and determine the reason for jamming.
NOTE: This drill has an electric brake. When the switch
trigger is released, the chuck stops turning.
WOOD AND METAL DRILLING
For maximum performance, use high speed steel bits for wood
or metal drilling. Select drilling mode on torque adjustment
ring and switch the gear train to high speed. Begin drilling
at a very low speed to prevent the bit from slipping off the
starting point.
Wood Drilling
 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
 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.