DeWalt DW421 Manual

DeWalt Sander DW421

Læs gratis den danske manual til DeWalt DW421 (7 sider) i kategorien Sander. Denne vejledning er vurderet som hjælpsom af 47 personer og har en gennemsnitlig bedømmelse på 5.0 stjerner ud af 24 anmeldelser. Har du et spørgsmål om DeWalt DW421, eller vil du spørge andre brugere om produktet?

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Side 1/7

Minimum Gauge for Cord Sets

Volts Total Length of Cord in Feet

120V 0-25 26-50 51-100 101-150

240V 0-50 51-100 101-200 201-300

Ampere Rating

More Not more AWG

Than Than

0 - 6 18 16 16 14

6 - 10 18 16 14 12

10 - 12 16 16 14 12

12 - 16 14 12 Not Recommended

3) PERSONAL SAFETY

a) Stay alert, watch what you are doing and use common sense when operating a

power tool. Do not use a power tool while you are tired or under the influence of

drugs, alcohol or medication. A moment of inattention while operating power toolsmay

result in serious personal injury.

b) Use safety equipment. Always wear eye protection. Safety equipment such as

dust mask, non-skid safety shoes, hard hat, or hearing protection used for appropriate

conditions will reduce personal injuries.

c) Avoid accidental starting. Ensure the switch is in the off-position before plugging

in. Carrying power tools with your finger on the switch or plugging in power tools that have

the switch on invites accidents.

d) Remove any adjusting key or wrench before turning the power tool on. A wrench or

a key left attached to a rotating part of the power tool may result in personal injury.

e) Do not overreach. Keep proper footing and balance at all times. This enables better

control of the power tool in unexpected situations.

f) Dress properly. Do not wear loose clothing or jewellery. Keep your hair, clothing

and gloves away from moving parts. Loose clothes, jewellery or long hair can be caught

in moving parts. Air vents often cover moving parts and should also be avoided.

g) If devices are provided for the connection of dust extraction and collection facilities,

ensure these are connected and properly used. Use of these devices can reduce dust-

related hazards.

4) POWER TOOL USE AND CARE

a) Do not force the power tool. Use the correct power tool for your application. The

correct power tool will do the job better and safer at the rate for which it was designed.

b) Do not use the power tool if the switch does not turn it on and off. Any power tool

that cannot be controlled with the switch is dangerous and must be repaired.

c) Disconnect the plug from the power source and/or the battery pack from the power

tool before making any adjustments, changing accessories, or storing power tools.

Such preventive safety measures reduce the risk of starting the power tool accidentally.

d) Store idle power tools out of the reach of children and do not allow persons

unfamiliar with the power tool or these instructions to operate the power tool. Power

tools are dangerous in the hands of untrained users.

e) Maintain power tools. Check for misalignment or binding of moving parts, breakage

of parts and any other condition that may affect the power tools operation. If

damaged, have the power tool repaired before use. Many accidents are caused by

poorly maintained power tools.

f) Keep cutting tools sharp and clean. Properly maintained cutting tools with sharp cutting

edges are less likely to bind and are easier to control.

g) Use the power tool, accessories and tool bits etc., in accordance with these

instructions and in the manner intended for the particular type of power tool, taking

into account the working conditions and the work to be performed. Use of the power

tool for operations different from those intended could result in a hazardous situation.

5) SERVICE

a) Have your power tool serviced by a qualified repair person using only identical

replacement parts. This will ensure that the safety of the power tool is maintained.

Additional Specific Safety Instructions For Sanders

• Hold power tools 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.

• Do not sand metal of any kind with your sander. Sparks may be generated by sanding

screws, nails or other metals which may ignite dust particles.

• Do not wet sand with this sander. Liquids may enter the motor housing and cause electric

shock.

• Empty dust bag frequently. Especially when sanding resin coated surfaces such as

polyurethane, varnish, shellac, etc. The accumulation of fine sanding dust particles may

self ignite and cause fire.

• Do not operate this tool for long periods of time. Vibration caused by the operating action

of this tool may cause permanent injury to fingers, hands, and arms. Use gloves to provide

extra cushion, take frequent rest periods, and limit daily time of use.

• Sanding of lead-based paint, chemically pressure treated lumber or other materials

that may contain carcinogens is not recommended. Sanding of these materials should

only be performed by a professional.

• Clean out your tool often, especially after heavy use. Dust and grit containing metal par-

ticles often accumulate on interior surfaces and could create a risk of serious injury, electric

shock or electrocution. ALWAYS disconnect the sander from the power source before clean-

ing. ALWAYS WEAR SAFETY GLASSES that conform to ANSI Z87.1.

• ALWAYS disconnect tool from the power source before changing abrasive belts,

sheets or discs. Such preventive safety measures reduce the risk of starting the power tool

accidentally.

• Replace worn CFS disc when it causes high tool rpm. High tool rpm caused by a worn

out CFS disc may result in separation of sanding pad from the sander, possibly causing per-

sonal injury. for instructions on replacing the CFS disc, see the section of this manual titled

“Tool Care.”

WARNING: ALWAYS use safety glasses. Everyday eyeglasses are NOT safety glasses.

Also use face or dust mask if cutting operation is dusty. ALWAYS WEAR CERTIFIED SAFETY

EQUIPMENT:

• ANSI Z87.1 eye protection (CAN/CSA Z94.3),

• ANSI S12.6 (S3.19) hearing protection,

• NIOSH/OSHA/MSHA respiratory protection.

WARNING: ALWAYS wear proper personal hearing protection that conforms to ANSI

S12.6 (S3.19) during use. Under some conditions and duration of use, noise from this product

may contribute to hearing loss.

WARNING: ALWAYS use eye protection. All users and bystanders must wear eye

protection that conforms to ANSI Z87.1.

WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other

construction activities contains chemicals known to cause cancer, birth defects, or other

reproductive 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.

WARNING: Use of this tool can generate and/or disburse dust, which may cause serious and

permanent respiratory or other injury. Always use NIOSH/OSHA approved respiratory protection

appropriate for the dust exposure. Direct particles away from face and body.

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

are as follows:

V ....................volts A ....................amperes

Hz ..................hertz W ...................watts

min ................minutes .................alternating current

.............direct current no ..................no load speed

Definitions: Safety Guidelines

The definitions below describe the level of severity for each signal word.

Please read the manual and pay attention to these symbols.

DANGER: Indicates an imminently hazardous situation which, if not

avoided, .will result in death or serious injury

WARNING: Indicates a potentially hazardous situation which, if not

avoided, could result in death or serious injury.

CAUTION: Indicates a potentially hazardous situation which, if not

avoided, may result in minor or moderate injury.

CAUTION: Used without the safety alert symbol indicates a poten-

tially hazardous situation which, if not avoided, result in may property

damage.

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 all instructions. Failure to follow all instructions listed below

may result in electric shock, fire and/or serious injury. The term “power tool” in all

of the warnings listed below refers to your mains-operated (corded) power tool or

battery-operated (cordless) power tool.

SAVE THESE INSTRUCTIONS

1) WORK AREA SAFETY

a) Keep work area clean and well lit. Cluttered or dark areas invite accidents.

b) Do not operate power tools in explosive atmospheres, such as in the presence of

flammable liquids, gases or dust. Power tools create sparks which may ignite the dust

or fumes.

c) Keep children and bystanders away while operating a power tool. Distractions can

cause you to lose control.

2) ELECTRICAL SAFETY

a) Power tool plugs must match the outlet. Never modify the plug in any way. Do not

use any adapter plugs with earthed (grounded) power tools. Unmodified plugs and

matching outlets will reduce risk of electric shock

b) Avoid body contact with earthed or grounded surfaces such as pipes, radiators,

ranges and refrigerators. There is an increased risk of electric shock if your body is

earthed or grounded.

c) Do not expose power tools to rain or wet conditions. Water entering a power tool will

increase the risk of electric shock

d) Do not abuse the cord. Never use the cord for carrying, pulling or unplugging the

power tool. Keep cord away from heat, oil, sharp edges or moving parts. Damaged

or entangled cords increase the risk of electric shock. Replace or repair damaged cords.

Make sure your extension cord is in good condition. Use only 3-wire extension cords that

have 3-prong grounding-type plugs and 3-pole receptacles that accept the tool’s plug.

e) When operating a power tool outdoors, use an extension cord suitable for outdoor

use. Use of a cord suitable for outdoor use reduces 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 gauge. The smaller the

gauge number, the heavier the cord.

INSTRUCTION MANUAL

GUIDE D'UTILISATION

MANUAL DE INSTRUCCIÓNES

DW421

Random Orbit Palm Sander

Ponceuse des finition orbitale excentrique

Lijadorae des órbita aleatoria

INSTRUCTIVO DE OPERACIÓN, CENTROS DE SERVICIO

Y PÓLIZA DE GARANTÍA. ADVERTENCIA: LÉASE ESTE

INSTRUCTIVO ANTES DE USAR EL PRODUCTO.

DEWALT Industrial Tool Co., 701 East Joppa Road, Baltimore, MD 21286

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 questions or comments, contact us.

Pour toute question ou tout commentaire, nous contacter.

Si tiene dudas o comentarios, contáctenos.

1-800-4-D WALT • www.dewalt.comE

..................Class I Construction ...................earthing terminal

......................(grounded) ..................safety alert symbol

.................Class II Construction …/min .......... revolutions or reciprocation

.....................(double insulated) .................... per minute

BPM .............beats per minute

Precautions To Take When Sanding Paint

1. Sanding of lead based paint is NOT RECOMMENDED due to the difficulty of controlling

the contaminated dust. The greatest danger of lead poisoning is to children and pregnant

women.

2. Since it is difficult to identify whether or not a paint contains lead without a chemical

analysis, we recommend the following precautions when sanding any paint:

PERSONAL SAFETY

1. No children or pregnant women should enter the work area where the paint sanding

is being done until all clean up is completed.

2. A dust mask or respirator should be worn by all persons entering the work area. The

filter should be replaced daily or whenever the wearer has difficulty breathing. See

your local hardware store for the proper NIOSH-approved dust mask.

3. NO EATING, DRINKING or SMOKING should be done in the work area to prevent

ingesting contaminated paint particles. Workers should wash and clean up BEFORE

eating, drinking or smoking. Articles of food, drink, or smoking should not be left in the

work area where dust would settle on them.

ENVIRONMENTAL SAFETY

1. Paint should be removed in such a manner as to minimize the amount of dust gener-

ated.

2. Areas where paint removal is occurring should be sealed with plastic sheeting of

4 mils thickness.

3. Sanding should be done in a manner to reduce tracking of paint dust outside the work

area.

CLEANING AND DISPOSAL

1. All surfaces in the work area should be vacuumed and thoroughly cleaned daily for

the duration of the sanding project. Vacuum filter bags should be changed frequent-

ly.

2. Plastic drop cloths should be gathered up and disposed of along with any dust chips

or other removal debris. They should be placed in sealed refuse receptacles and

disposed of through regular trash pick-up procedures. During clean up, children and

pregnant women should be kept away from the immediate work area.

3. All toys, washable furniture and utensils used by children should be washed thoroughly

before being used again.

SAVE THESE INSTRUCTIONS

Motor

Your D WALT tool is powered by a DE EWALT built motor. Be sure your power supply agrees with

the nameplate marking. (Volts, 120 AC only). Voltage decrease of more than 10% will cause

loss of power and overheating. All DEWALT tools are factory tested; if this tool does not operate,

check the power supply.

Intended Use

The DW421 heavy-duty random orbit palm sander has been designed for professional

sanding at various work sites (i.e., construction sites). use under humid conditions DO NOT

or in presence of flammable liquids or gases.

This random orbit palm sander is a professional power tool. DO NOT let children come into

contact with the tool. Supervision is required when inexperienced operators use this tool.

Attaching Sanding Discs

Your sander is designed to use 5" (127 mm) sanding discs. Discs have an 8 hole dust

extraction pattern and hook and loop attachment. To attach paper to the sanding pad:

REQUIRED SANDPAPERS

Disc

Size

Attachment

Method

Hole

Pattern

5" Hook & Loop 8 holes

1. Turn off and unplug the tool.

2. Turn the sander over so that the sanding pad is facing upward.

3. Clean dust from the vinyl pad face.

4. Hold the pad with one hand to keep it from rotating.

5. With the other hand, align the holes if they are present, and place the disc directly on top

of the pad. (FIG. 1).

NOTE: Do not use sanding screen (e.g. screen used for sanding drywall) directly on the

hook and loop pad. The screen will not hold and will damage the hooks on the pad. The

hooks on the pad will wear very rapidly if left in contact with the work surface while the tool

is operating.

Switch (Fig. 2)

To turn the unit on, depress the side of the dust protected switch that corresponds to

the symbol “I”. To turn the tool off, depress the side of the switch that corresponds to the

symbol “O”.

Dust Extraction (Fig. 3, 4)

Your sander comes equipped with a cloth bag to collect the dust generated during sand-

ing. It was designed to be very durable and efficient yet easy to empty. To empty the dust

collection bag:

1. Turn off and unplug tool.

2. While holding the canister, twist to unlock and remove the adapter. (Fig. 3)

3. Gently empty the bag and shake out the adapter. (Fig. 4)

You may notice that all the dust will not come free from the bag. This will not affect sanding

performance but will reduce the sander’s dust collection efficiency. To restore your sander’s

dust collection efficiency, depress the spring inside the dust bag when you are emptying it

and tap it on the side of the trash can or dust receptacle.

CAUTION: Never operate this tool unless the dust collector is in place. Sanding dust

exhaust may create a breathing hazard.

OPERATION

WARNING: To reduce the risk of serious personal injury, turn tool off and

disconnect tool from power source before making any adjustments or removing/

installing attachments or accessories.

Usage

To operate your sander, grasp it as shown in figures 5A or 5B and turn it on. Move the unit

in long, sweeping strokes along the surface being sanded, letting the sander do the work.

Pushing down on the tool while sanding actually slows the removal rate and produces an

inferior quality surface. Be sure to check your work often, this sander is capable of removing

material rapidly, especially with coarse paper.

The random orbital action of your sander allows you to sand with the grain or at any angle

across it for most sanding jobs. To produce the best finish possible, start with coarse grit

sandpaper and change gradually to finer and finer paper. Vacuum and wipe surface with a

tack cloth between grit steps.Your sander is designed to sand into small or confined areas.

Its small size and light weight make it ideal for overhead work.

If your sander has the dust collection feature, the rate at which the dust collection bag fills

up will vary with the type of material being sanded and the coarseness of the sandpaper.

For best results, empty the bag frequently. When sanding painted surfaces, (see the follow-

ing for additional precautions when sanding paint) you may find that the sandpaper loads

up and clogs with paint. A heat gun will work much better to remove paint before sanding.

FOLLOW ALL SAFETY INSTRUCTIONS IN HEAT GUN INSTRUCTION MANUAL.

MAINTENANCE

WARNING: To reduce the risk of serious personal injury, turn tool off and

disconnect tool from power source before making any adjustments or removing/

installing attachments or accessories.

Cleaning

WARNING: Never use solvents or other harsh chemicals for cleaning the non-metallic

parts of the tool. These chemicals may weaken the plastic materials used in these parts.

Use a cloth dampened only with water and mild soap. Never let any liquid get inside the

tool; never immerse any part of the tool into a liquid.

FIG. 2FIG. 1

FIG. 3 FIG. 4

FIG. 5A FIG. 5B

FIG. 7 FIG. 8

FIG. 9

FIG. 10

Tool Care

1. Keep your sander as clean as possible by wiping with a clean cloth and blowing air

through it after every 5 hours of use.

2. As part of CFS (Controlled Finishing System), your sander is equipped with a

replaceable disc which is located between the pad and the shroud. It is designed to

increase the dust collection efficiency and control the pad speed while the unit is off the

work. The disc is designed to be a consumable part and will occasionally need to be

replaced. Replacement is necessary when the pad speed increases very dramatically

when the unit is lifted from the work surface. To replace your CFS disc:

a. Turn off and unplug tool.

b. Remove 3 screws from the bottom of the pad.

c. Remove the pad.

d. Snap out worn disc.

e. Snap in new disc, aligning notch in disc with cut out in shroud shown in figure 7.

f. Press in new disc around the edges using both hands to ensure that the disc is

inserted snugly into the shroud as shown in figure 8.

g. Replace the pad and the 3 screws.

3. Avoid overloading your sander. Overloading will result in a considerable reduction in

speed and finish quality of your work. The unit may also become hot. In this event, run

sander at a no load condition for a minute or two.

4. If you wrap the cord around the tool when you store it, leave a generous loop of cord

such that the strain relief does not bend. This helps prevent premature cord failure.

Brush Replacement

WARNING: To reduce the risk of serious personal injury, turn tool off and

disconnect tool from power source before making any adjustments or removing/

installing attachments or accessories.

Follow these directions to replace the tool’s brushes:

1. Remove the three screws located in the top cap, as shown in figure 9.

2. Lift off the top cap. Observe the brush holders and wires leading from the brushes to the

motor field, as shown in figure 10.

3. Pull the wires from the motor field and then lift and hold out of the way of one of the

brush springs.

4. Remove the old brush from the brush holder and discard the brush/wire assembly. Still

holding the brush spring out of the way, insert the new brush and release the spring

against the back of the brush. Then plug the wire into the motor field. Repeat the pro-

cedure for the second brush.

5. Replace the top cap and tighten the three screws that hold it in place. Always replace

both brushes.

Lubrication

Self lubricating bearings are used in the tool and periodic relubrication is not required.

However,

it is recommended that, once a year, you take or send the tool to a service center for

a thorough cleaning and inspection.

Produkt Specifikationer

Mærke:	DeWalt
Kategori:	Sander
Model:	DW421

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