DeWalt 616974-00 instruction manual General Safety Rules, Additional Safety Rules, Switch

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Questions? See us on the World	INSTRUCTION MANUAL	GUIDE D'UTILISATION MANUAL DE INSTRUCCIONES			DW275QD/DW276QD/DW277QD Screwdriver Tournevi Destornillador
	DEWALT Industrial Tool Co., 701 East Joppa Road, Baltimore, MD 21286
	(FEB03) Form No. 616974-00		DWDW275QD	Copyright © 2003

The following are trademarks for one or more DEWALT power tools: the yellow and black color scheme; the “D” shaped air intake grill; the array of pyramids on the handgrip; the kit box configuration; and the array of lozenge-shaped humps on the surface of the tool.

IF YOU HAVE ANY QUESTIONS OR COMMENTS ABOUT THIS OR ANY DEWALT TOOL, CALL US TOLL FREE AT:

1-800-4-DEWALT (1-800-433-9258)

General Safety Rules

WARNING! Read and understand all instructions. Failure to follow all instructions list- ed below may result in electric shock, fire and/or serious personal injury.

SAVE THESE INSTRUCTIONS

WORK AREA

Keep your work area clean and well lit. Cluttered benches and dark areas invite accidents.

Do not operate power tools in explosive atmospheres, such as in the presence of flam- mable liquids, gases, or dust. Power tools create sparks which may ignite the dust or fumes. Keep bystanders, children, and visitors away while operating a power tool. Distractions can cause you to lose control.

ELECTRICAL SAFETY

Grounded tools must be plugged into an outlet properly installed and grounded in accor- dance with all codes and ordinances. Never remove the grounding prong or modify the plug in any way. Do not use any adaptor plugs. Check with a qualified electrician if you are in doubt as to whether the outlet is properly grounded. If the tools should electrically malfunction or break down, grounding provides a low resistance path to carry electricity away from the user. Applicable only to Class I (grounded) tools. The DW274W and DW286G units are grounded.

Double insulated tools are equipped with a polarized plug (one blade is wider than the other.) This plug will fit in a polarized outlet only one way. If the plug does not fit fully in the outlet, reverse the plug. If it still does not fit, contact a qualified electrician to install

a polarized outlet. Do not change the plug in any way. Double insulation eliminates the need for the three wire grounded power cord and grounded power supply system. Applicable only to Class II (double insulated) tools. The DW251, DW252, DW255,DW257, DW260, DW262, DW263, DW265, DW266, DW267, DW268, DW269, DW272, DW274, DW276, DW281, DW282 and DW284 units are double insulated.

Avoid body contact with grounded surfaces such as pipes, radiators, ranges and refrig- erators. There is an increased risk of electric shock if your body is grounded.

Don’t expose power tools to rain or wet conditions. Water entering a power tool will

increase the risk of electric shock.

Do not abuse the cord. Never use the cord to carry the tools or pull the plug from an out- let. Keep cord away from heat, oil, sharp edges or moving parts. Replace damaged cords immediately. Damaged cords increase the risk of electric shock.

When operating a power tool outside, use an outdoor extension cord marked “W-A” or “W.” These cords are rated for outdoor use and reduce the risk of electric shock. When using an extension cord, be sure to use one heavy enough to carry the current your product will draw. An undersized cord will cause a drop in line voltage resulting in loss of power and overheating. The following table shows the correct size to use depending on cord length and nameplate ampere rating. If in doubt, use the next heavier gage. The smaller the gage number, the heav- ier the cord.

				Minimum Gage for Cord Sets
	Volts		Total Length of Cord in Feet
	120V		0-25	26-50	51-100	101-150
	Ampere Rating			AWG
	More	Not more
	Than	Than
0 -		6	18	16	16	14

PERSONAL SAFETY

Stay alert, watch what you are doing and use common sense when operating a power tool. Do not use tool while tired or under the influence of drugs, alcohol, or medication. A moment of inat- tention while operating power tools may result in serious personal injury,

Dress properly. Do not wear loose clothing or jewelry. Contain long hair. Keep your hair, cloth- ing, and gloves away from moving parts. Loose clothing, jewelry, or long hair can be caught in moving parts. Air vents often cover moving parts and should also be avoided.

Avoid accidental starting. Be sure switch is off before plugging in. Carrying tools with your fin- ger on the switch or plugging in tools that have the switch on invites accidents.

Remove adjusting keys or switches before turning the tool on. A wrench or key that is left attached to a rotating part of the tool may result in personal injury.

Do not overreach. Keep proper footing and balance at all times. Proper footing and balance enables better control of the tool in unexpected situations.

Use safety equipment. Always wear eye protection. Dust mask, non-skid safety shoes, hard hat, or hearing protection must be used for appropriate conditions.

TOOL USE AND CARE

Use clamps or other practical way to secure and support the workpiece to a stable platform. Holding the work by hand or against your body is unstable and may lead to a loss of control.

Do not force tool. Use the correct tool for your application. The correct tool will do the job bet- ter and safer and the rate for which it is designed.

Do not use tool if switch does not turn it on or off. Any tool that cannot be controlled with the switch is dangerous and must be repaired.

Disconnect the plug from the power source before making any adjustments, changing acces- sories, or storing the tool. Such preventative safety measures reduce the risk of starting the tool accidentally.

Store idle tools out of reach of children and other untrained persons. Tools are dangerous in the hands of untrained users.

Maintain tools with care. Keep cutting tools sharp and clean. Properly maintained tools, with sharp cutting edges are less likely to bind and are easier to control.

Check for misalignment or binding of moving parts, breakage of parts, and any other condition that may affect the tools operation. If damaged, have the tool serviced before using. Many acci- dents are caused by poorly maintained tools.

Use only accessories that are recommended by the manufacturer for your model. Accessories that may be suitable for one tool, may become hazardous when used on another tool.

SERVICE

Tool service must be performed only by qualified repair personnel. Service or maintenance per- formed by unqualified personnel could result in a risk of injury.

When servicing a tool, use only identical replacement parts. Follow instructions in the Maintenance section of this manual. Use of unauthorized parts or failure to follow Maintenance Instructions may create a risk of electric shock or injury.

Additional Safety Rules

Hold tool by insulated gripping surfaces when performing an operation where the cutting tool may contact hidden wiring or its own cord. Contact with a “live” wire will make exposed metal parts of the tool “live” and shock the operator.

Keep handles dry, clean, free from oil and grease. It is recommended to use rubber gloves. This will enable better control

KEEP TOOL DRY FROM SWEAT DURING USE. Reduce risk of electric shock by preventing perspiration or other liquids from entering the tool during use in hot/humid conditions. Use wrist- bands, gloves, drying towels or cloths as necessary.

CAUTION: Wear appropriate hearing protection during use. Under some conditions and duration of use, noise from this product may contribute to hearing loss.

WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other con- struction activities contains chemicals known to cause cancer, birth defects or other repro- ductive harm. Some examples of these chemicals are:

•lead from lead-based paints,

•crystalline silica from bricks and cement and other masonry products, and

•arsenic and chromium from chemically-treated lumber (CCA).

Your risk from these exposures varies, depending on how often you do this type of work. To reduce your exposure to these chemicals: work in a well ventilated area, and work with approved safety equipment, such as those dust masks that are specially designed to filter out microscopic particles.

Avoid prolonged contact with dust from power sanding, sawing, grinding, drilling, and other construction activities. Wear protective clothing and wash exposed areas with soap and water. Allowing dust to get into your mouth, eyes, or lay on the skin may promote absorption of harmful chemicals.

• The label on your tool may include the following symbols.

V		volts	A		amperes
Hz		hertz	W		watts
min		............minutes	no		alternating current
		direct current			no load speed
	..............	Class II Construction		..................	earthing terminal
	..............	safety alert symbol	.../min		revolutions per minute

Switch

To start tool, depress the trigger switch, shown in Figure 1. To stop tool, release the switch. The variable speed trigger switch permits speed control. The farther the trigger switch is depressed, the higher the speed of the tool.

To lock the switch in the on position for continuous operation, depress the trigger switch and push up the locking button. The tool will continue to run. To turn the tool off, from a locked on condition, squeeze and release the trigger once. Before using the tool (each time), be sure that the locking button release mechanism is working freely. Be sure to release the locking mechanism before disconnecting the plug from the power supply. Failure to do so will cause the tool to start immediately the next time it is plugged in. Damage or injury could result.The reversing lever is used to reverse the tool for backing out screws. It is located above the trigger, shown in Figure 1. To reverse the screwdriver, turn it off and push the reversing lever to the right (when viewed from the back of the tool). To position the lever for forward operation, turn the tool off and push the lever to the left.

Dead Spindle Action

All DEWALT screwdrivers provide a dead output spindle to permit fasteners to be located easily in the driving accessory. Clutches are held apart by light spring pressure permitting the driving clutch to rotate without turning the driven clutch and accessory. When sufficient forward pressure is applied to the unit, the clutches engage and rotate the spindle and accessories. A reversing switch makes it possible to drive or loosen either right or left hand screws.

Maintenance

CLEANING

With the motor running, blow dirt and dust out of all air vents with dry air at least once a week. Wear safety glasses when performing this operation. Exterior plastic parts may be cleaned with a damp cloth and mild detergent. Although these parts are highly solvent resist- ant, NEVER use solvents.

CHANGING CLUTCHES

1.Remove clutch housing by unscrewing (left hand thread).

2.Clamp tool or clutch housing in a resilient clamp.USE CARE, the clutch housing can be easily damaged.

3.Remove round clutch retaining rings with a very small screwdriver (see Figure 2).

4.Install new clutches and new retaining rings. Be careful to assemble the intermediate clutch large end first toward the unit and then the spring. The spring should run against the output clutch.

NOTE: If the output spindle slides toward inside of gear case, remove gear case and push output spindle forward to expose retaining ring groove. Reassemble dead spindle spring allowing no more than 1/4" projecting from end of spindle.

5. Relubricate clutches (see Parts Bulletin for DEWALT lubricants identification).

LUBRICATION

All ball and needle bearings are factory lubricated for the life of the bearing.