Ryobi HP108L Manuel d'utilisateur télécharger pdf (Page 8)

8 — English

WARNING:

When drilling, be prepared for binding at bit breakthrough.

When these situations occur, drill 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.

 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.

 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 trig-

ger 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.

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.

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.

OPERATION

WARNING:

Make sure to insert the drill bit straight into the chuck

jaws. Do not insert the drill bit into the chuck jaws at an

angle, then tighten. This could cause the drill bit to be

thrown from the drill, resulting in possible serious per-

sonal injury or damage to the chuck.

 Grasp and hold the collar of the chuck with one hand.

With your other hand, rotate the chuck body to close and

tighten the chuck jaws.

WARNING:

Do not hold the chuck body with one hand and use the

power of the drill to tighten the chuck jaws on the drill

bit. The chuck body could slip in your hand, or your

hand could slip and come in contact with the rotating

drill bit. This could cause an accident resulting in serious

personal injury.

To remove bits, lock the switch trigger and open the

chuck jaws.

DRIVING SCREWS

See Figure 5, page 10.

The drill has a built-in LED worklight. This feature is

convenient when working in close or tight areas where

additional light is needed. Whenever the switch trigger is

depressed, the LED worklight will illuminate.

NOTE: During normal operation, if the LED worklight will not

illuminate, charge the drill.

 Check the direction of rotation selector for the correct

setting (forward or reverse).

 Secure the workpiece in a vise or with clamps to keep it

from turning as the 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.

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Ryobi HP108L Manuel d'utilisateur Page 8

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