Manual DeWalt D21583K (page 42 of 172) (English, German, Dutch, Danish, French, Italian, Polish, Portuguese, Swedish, Turkish, Spanish, Norwegian, Finnish)

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ENGLISH

MAINTENANCE

Your DEWALT power tool has been designed to

operate over a long period of time with a minimum

of maintenance. Continuous satisfactory operation

depends upon proper tool care and regular cleaning.

WARNING: To reduce the risk of

injury, turn unit off and disconnect

machine from power source before

installing and removing accessories,

before adjusting or changing set-

ups or when making repairs. Be sure

the trigger switch is in the OFF position.

An accidental start-up can cause injury.

Regularly take the tool to an authorized repair

agent for inspection. This includes checking the

carbon brushes, topping up oil in the gearcase and

replacement of the gearcase sealing ring.

Troubleshooting

If your tool seems not to operate properly, follow

the instructions below. If this does not solve the

problem, please contact your repair agent.

Core bit does not cut

Material too hard for core bit

• Choose a more appropriate core bit

(with softer segments).

• Apply wet drilling when appropriate.

Segments look glazed and polished

• Drill in abrasive material to re-expose diamond

segments.

Evacuated water too clear and too fluid

Water flow slows down the cutting action and

prevents the diamond segments to self-sharpen.

• Reduce water flow.

Dust accumulating in core bit

Accumulating dust slows down the drilling speed.

• Use the appropriate dust extraction device.

• Disengage drill bit regularly to evacuate cuttings.

Rotating speed not appropriate

• Refer to the technical data for proper speed

ratings.

Segments and core are burnt

• Increase water flow.

Segments wear too fast

• Choose a more appropriate core bit

(with harder segments).

• Reduce the pressure applied on the core bit.

Lubrication

Your power tool requires no additional lubrication.

Dust Extraction (dry operation)

WARNING: When performing a

dry cutting operation, connect a

dust extraction device designed in

accordance with the relevant regulations

regarding dust emissions.

Cleaning

WARNING: Blow dirt and dust out of

the main housing with dry air as often as

dirt is seen collecting in and around the

air vents. Wear approved eye protection

and approved dust mask when

performing this procedure.

WARNING: Never use solvents or

other harsh chemicals for cleaning the

non-metallic parts of the tool. These

chemicals may weaken the 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.

Optional Accessories

WARNING: Since accessories, other

than those offered by DEWALT, have

not been tested with this product, use

of such accessories with this tool could

be hazardous. To reduce the risk of

injury, only DEWALT, recommended

accessories should be used with this

product.

Consult your dealer for further information on the

appropriate accessories.

DUST EXTRACTION SYSTEM (FIG. 7)

The D27902 dust extractor (j) ensures a proper and

safe discharge of dust in all drilling applications.

WATER PUMP (FIG. 8)

Removing debris from the working area and cooling

the core bit in wet applications, the D215824 water

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DeWalt D21583K Manual

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