DeWalt DWD024 manual Trigger Switch Fig, Proper Hand Position, Drilling, Variable Speed

English

Trigger Switch (Fig. 1)

To start the drill, depress the trigger switch; to stop the drill, release the trigger switch.

NOTE: Use lower speeds for starting holes without a center punch, drilling in metal or plastics, driving screws or drilling ceramics. Higher speeds are better for drilling wood and composition boards and using abrasive and polishing accessories.

VARIABLE SPEED

A variable speed trigger switch (A) permits speed control—the farther the trigger is depressed, the higher the speed of the drill. For continuous operation, press and hold the variable speed switch, move the lock-on button (B) up, then release the switch.

To stop continuous operation, press the switch briefly and release it. Always switch the tool off when work is finished and before unplugging.

Proper Hand Position
	FIG. 9
		J
(Fig. 9)

WARNING: To reduce the risk of serious personal injury, ALWAYS use proper hand position as shown in figure 9.

WARNING: To reduce the risk of serious personal injury, ALWAYS hold securely in anticipation of a sudden reaction.

Proper hand position requires one hand on

the main handle (J), with the other hand on G the side handle (G).

Drilling

WARNING: To reduce the risk of personal injury, ALWAYS ensure workpiece is anchored or clamped firmly. If drilling thin material, use a wood “back-up” block to prevent damage to the material.

1.Use sharp drill bits only. For WOOD, use twist drill bits, spade bits, power auger bits, or hole saws. For METAL, use steel twist drill bits or hole saws. For MASONRY, such as brick, cement, cinder block, etc., use carbide-tipped bits rated for percussion drilling.

2.Always apply pressure in a straight line with the bit. Use enough pressure to keep drill biting, but do not push hard enough to stall the motor or deflect the bit.

3.Hold tool firmly with both hands to control the twisting action of the drill.

4.IF DRILL STALLS, it is usually because it is being overloaded or improperly used. RELEASE TRIGGER IMMEDIATELY, remove drill bit from work, and determine cause of stalling.

DO NOT CLICK TRIGGER ON AND OFF IN AN ATTEMPT TO START A STALLED DRILL — THIS CAN DAMAGE THE DRILL.

5.To minimize stalling or breaking through the material, reduce pressure on drill and ease the bit through the last fractional part of the hole.

6.Keep the motor running when pulling the bit back out of a drilled hole. This will help prevent jamming.

7.With variable speed drills there is no need to center punch the point to be drilled. Use a slow speed to start the hole and accelerate by squeezing the trigger harder when the hole is deep enough to drill without the bit skipping out.

DRILLING IN METAL

Start drilling with slow speed and increase to full power while applying firm pressure on the tool. A smooth even flow of metal chips indicates the proper drilling rate. Use a cutting lubricant when drilling metals. The exceptions are cast iron and brass which should be drilled dry.

NOTE: Large [5/16" (8 mm) to 1/2" (13 mm)] holes in steel can be made easier if a pilot hole [5/32" (4 mm) to 3/16" (5 mm)] is drilled first.

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