DW841 - Grinder DEWALT - Free user manual and instructions

USER MANUAL DW841 DEWALT

Technical diagram of a power tool with numbered parts labeled 1 to 5

A

DW830

8 6 7

B1

DW840 DW841

Technical diagram of a mechanical assembly with numbered components and directional arrows indicating motion or assembly steps.

B2

DW830 9 C1

11 10 D

DW840 DW841 9

C2

513 12

E

14 2

F

Technical diagram of a hairdryer with labeled parts 1 and 2

G

VINKELSLIBER DW830/DW840/DW841

Tillykke!

WINKELSCHLEIFER DW830/DW840/DW841

MEDIUM ANGLE GRINDER DW830/DW840/DW841

Congratulations!

You have chosen a DEWALT Power Tool. Years of experience, thorough product development and innovation make DEWALT one of the most reliable partners for professional Power Tool users.

Table of contents

Technical data en - 1

EC-Declaration of conformity en - 2

Safety instructions en - 2

Package contents en - 3

Description en - 4

Electrical safety en - 4

Mains plug replacement (U.K. & Ireland only) en - 4

Using an extension cable en - 4

Assembly and adjustment en - 5

Instructions for use en - 5

Maintenance en - 6

Guarantee en - 6

Technical data

DW830 DW840 DW841
Voltage V 230	230	230
(U.K. & Ireland only)		V 115	115	115
Power input		W 1,400	1,800	2,000
No load speed		min^-1 10,000	8,000	8,000
Wheel diameter		mm 125	180	180
Max. wheel width		mm 6.5	7.0	7.0
Spindle		M14	M14	M14
Weight		kg 2.7	3.2	3.3
Fuses:
Europe		230 V tools		10 Amperes, mains
U.K. & Ireland		230 V tools		13 Amperes, in plugs

The following symbols are used throughout this manual:

Denotes risk of personal injury, loss of life or damage to the tool in case of non-observance of the instructions in this manual.

Denotes risk of electric shock.

EC-Declaration of conformity

CE

DW830/DW841

DEWALT declares that these power tools have been designed in compliance with: 98/37/EEC, 89/336/EEC, 73/23/EEC, EN 50144, EN 55014-2, EN 55014, EN 61000-3-2 & EN 61000-3-3.

DW840

DEWALT declares that these power tools have been designed in compliance with: 98/37/EEC, 89/336/EEC, 73/23/EEC, EN 50144, EN 55014-2, EN 55014, EN 61000-3-2 & EN 61000-3-11.

For more information, please contact DEWALT at the address below, or refer to the back of the manual.

Level of sound pressure according to 86/188/EEC & 98/37/EEC, measured according to EN 50144:

	DW830 DW840 DW841
L_pA	(sound pressure) dB(A)^* 90 90 90
L_WA	(acoustic power) dB(A) 103 103 103

* at the operator's ear

Take appropriate measures for the protection of hearing if the sound pressure of 85 dB(A) is exceeded.

Weighted root mean square acceleration value according to EN 50144:

	DW830	DW840	DW841
	5 m/s2	5 m/s2	5 m/s2

Director Engineering & Product Development Horst Großmann

X. fopmann

When using Power Tools, always observe the safety regulations applicable in your country to reduce the risk of fire, electric shock and personal injury. Read the following safety instructions before attempting to operate this product. Keep these instructions in a safe place!

General

1 Keep work area clean Cluttered areas and benches can cause accidents.

2 Consider work area environment

Do not expose Power Tools to humidity. Keep work area well lit. Do not use Power Tools in the presence of inflammable liquids or gases.

3 Guard against electric shock

Prevent body contact with earthed surfaces (e.g. pipes, radiators, cookers and refrigerators). For use under extreme conditions (e.g. high humidity, when metal swarf is being produced, etc.) electric safety can be improved by inserting an isolating transformer or a (FI) earth-leakage circuit-breaker.

4 Keep children away

Do not let children come into contact with the tool or extension cord. Supervision is required for those under 16 years of age.

5 Extension cords for outdoor use

When the tool is used outdoors, always use extension cords intended for outdoor use and marked accordingly.

6 Store idle tools

When not in use, Power Tools must be stored in a dry place and locked up securely, out of reach of children.

7 Dress properly

Do not wear loose clothing or jewellery. They can be caught in moving parts. Preferably wear rubber gloves and non-slip footwear when working outdoors. Wear protective hair covering to keep long hair out of the way.

8 Wear safety goggles

Also use a face or dust mask in case the operations produce dust or flying particles.

9 Beware of maximum sound pressure

Take appropriate measures for the protection of hearing if the sound pressure of 85 dB(A) is exceeded.

10 Secure workpiece

Use clamps or a vice to hold the workpiece. It is safer and it frees both hands to operate the tool.

11 Do not overreach

Keep proper footing and balance at all times.

12 Avoid unintentional starting

Do not carry the plugged-in tool with a finger on the switch. Be sure that the switch is released when plugging in.

13 Stay alert

Watch what you are doing. Use common sense. Do not operate the tool when you are tired.

14 Disconnect tool

Shut off power and wait for the tool to come to a complete standstill before leaving it unattended. Unplug the tool when not in use, before servicing or changing accessories.

15 Remove adjusting keys and wrenches

Always check that adjusting keys and wrenches are removed from the tool before operating the tool.

16 Use appropriate tool

The intended use is laid down in this instruction manual. Do not force small tools or attachments to do the job of a heavy-duty tool. The tool will do the job better and safer at the rate for which it was intended.

Warning! The use of any accessory or attachment or performance of any operation with this tool, other than those recommended in this instruction manual may present a risk of personal injury.

17 Do not abuse cord

Never carry the tool by its cord or pull it to disconnect from the socket. Keep the cord away from heat, oil and sharp edges.

18 Maintain tools with care

Keep the tools in good condition and clean for better and safer performance. Follow the instructions for maintenance and changing accessories. Inspect the tool cords at regular intervals and, if damaged, have them repaired by an authorized DEWALT repair agent. Inspect the extension cords periodically and replace them if damaged. Keep all controls dry, clean and free from oil and grease.

19 Check for damaged parts

Before using the tool, carefully check it for damage to ensure that it will operate properly and perform its intended function.

Check for misalignment and seizure of moving parts, breakage of parts and any other conditions that may affect its operation.

Have damaged guards or other defective parts repaired or replaced as instructed. Do not use the tool if the switch is defective. Have the switch replaced by an authorized DEWALT repair agent.

20 Have your tool repaired by an authorized DEWALT repair agent

This Power Tool is in accordance with the relevant safety regulations. To avoid danger, electric appliances must only be repaired by qualified technicians.

Additional safety rules for angle grinders

- Your angle grinder has been designed for grinding and cutting masonry and steel.

Do not cut or grind light metal with a magnesium content exceeding 80% since this type of metal is flammable.

• Do not use any accessories other than fibre reinforced grinding wheels and cutting disks.
• Use the grinding wheels and cutting disks recommended by the manufacturer only.
• The no-load speed of the grinding wheel or cutting disk must not exceed the value printed on the nameplate (instruction sheet).
• Do not cut workpieces requiring a maximum depth of cut exceeding that of the cutting disk.

Package contents

The package contains:

1 Angle grinder
1 Guard
1 Side handle
1 Flange set
1 Two-pin spanner
1 Instruction manual
1 Exploded drawing

• Check for damage to the tool, parts or accessories which may have occurred during transport.
  • Take the time to thoroughly read and understand this manual prior to operation.

Description (fig. A)

Your angle grinder has been designed for professional grinding and cutting applications.

1 ON/OFF-switch
2 Lock-on button / lock-off button (UK only)
3 Side handle
4 Guard
5 Spindle lock

DW841 - Soft start feature

The soft start feature allows a slow speed build-up to avoid an initial jerk when starting. This feature is particularly useful when working in confined spaces.

DW841 - Constant speed control feature

The constant speed control feature maintains tool speed under load to assure optimum efficiency and productivity. It also functions as an overload feature.

DW841 - Overload protection

The unit will automatically stop drawing current if the motor is being overloaded. For optimum efficiency and to avoid damaging the motor, do not overload the motor for long periods.

Electrical safety

The electric motor has been designed for one voltage only. Always check that the power supply corresponds to the voltage on the rating plate.

Your DEWALT tool is double insulated in accordance with EN 50144; therefore no earth wire is required.

Mains plug replacement (U.K. & Ireland only)

• Should your mains plug need replacing and you are competent to do this, proceed as instructed below. If you are in doubt, contact an authorized DEWALT repair agent or a qualified electrician.
• Disconnect the plug from the supply.
• Cut off the plug and dispose of it safely; a plug with bared copper conductors is dangerous if engaged in a live socket outlet.
• Only fit 13 Amperes BS1363A approved plugs fitted with the correctly rated fuse (1).
• The cable wire colours, or a letter, will be marked at the connection points of most good quality plugs.

Attach the wires to their respective points in the plug (see below). Brown is for Live (L) (2) and Blue is for Neutral (N) (4).

- Before replacing the top cover of the mains plug ensure that the cable restraint (3) is holding the outer sheath of the cable firmly and that the two leads are correctly fixed at the terminal screws.

Technical diagram of a mechanical or electrical component with numbered parts labeled 1, 2, 3, and 4.

Never use a light socket.

Never connect the live (L) or neutral (N) wires to the earth pin marked E or ± .

For 115 V units with a power rating exceeding 1500 W, we recommend to fit a plug to BS4343 standard.

Using an extension cable

If an extension cable is required, use an approved extension cable suitable for the power input of this tool (see technical data). The minimum conductor size is 1.5 mm^2 . When using a cable reel, always unwind the cable completely.

Also refer to the table below.

Conductor size (mm2) Cable rating (Amperes)
0.75 6
1.00 10
1.50 15
2.50 20
4.00 25
Cable length (m)
7.5 15 25 30 45 60
Voltage Amperes Cable rating (Amperes)
115 0 - 2.0 6 6	6 6	6 10
2.1 - 3.4 6 6	6 6 15 15
3.5 - 5.0 6 6	10 15	20 20
5.1 - 7.0	10 10 15 20 20 25
7.1 - 12.0	15 15 20 25 25	-
12.1 - 20.0	20	20	25	-	-	-

230 0 - 2.0 6 6 6 6 6 6

2.1 - 3.4 6 6 6 6 6 6

3.5 - 5.0 6 6 6 6 10 15

5.1 - 7.0 10 10 10 10 15 15

7.1 - 12.0 15 15 15 15 20 20

12.1 - 20.0 20 20 20 20 25 -

Voltage drops

Inrush currents cause short-time voltage drops. Under unfavourable power supply conditions, other equipment may be affected.

If the system impedance of the power supply is lower than 0.25 , disturbances are unlikely to occur.

Assembly and adjustment

Prior to assembly and adjustment always unplug the tool.

Mounting and removing the guard

DW830 - Mounting (fig. B1 & C1)

• Place the angle grinder on a table, spindle up.
• Align the lug (6) with the slot (7) in the bracket.
• Press the guard (8) down and turn it in the direction of the arrow (fig. B1).

The guard locking pin (9) prevents the guard from coming loose.

DW830 - Removing (fig. B1 & C1)

• Hold the tool in your hand.
• Rotate the guard (8) in the direction of the arrow (fig. C1).
• Use a screwdriver to press the locking pin (9) in the slot.
• Release the guard.

DW840/DW841 - Mounting (fig. B2 & C2)

• Place the angle grinder on a table, spindle up.
• Align the lugs (6) with the slots (7).
• Press the guard (8) down and turn it in the direction of the arrow (fig. B2).
• Securely tighten the screws (9).

DW840/DW841 - Removing

- To remove the guard, proceed in reverse order.

Mounting and removing a grinding wheel or cutting disk (fig. D & E)

• Place the tool on a table, guard up.
• Fit the spacer (11) correctly onto the spindle (10).

- Place the grinding wheel or cutting disk on the spacer.

- Screw the threaded flange (12) onto the spindle (10).

- Press the spindle lock (5) and rotate the grinding wheel or cutting disk until it locks in position.

- Tighten the threaded flange using the two-pin spanner (13) supplied.

- Release the spindle lock.

- To remove the grinding wheel or cutting disk, loosen the threaded flange using the two-pin spanner (while the spindle lock is engaged).

Fitting a wire cup brush

- Screw the wire cup brush directly onto the spindle without using the spacer and threaded flange.

Mounting the side handle (fig. F)

- Screw the side handle (4) tightly into one of the holes (14) on either side of the gear case.

Instructions for use

• Always observe the safety instructions and applicable regulations.
- Ensure all materials to be ground or cut are secured in place.
- Apply only a gentle pressure to the tool. Do not exert side pressure on the grinding wheel or cutting disk.
- Avoid overloading. Should the tool become hot, let it run a few minutes under no load condition.

Prior to operation:

• Install the appropriate guard and disk or wheel. Do not use excessively worn disks or wheels.
• Be sure the spacer and threaded flange are mounted correctly.
• Make sure the disk or wheel rotates in the direction of the arrows on the accessory and the tool.

Switching ON and OFF (fig. G)

• To run the tool, press the lock-off button (2) and the ON/OFF-switch (1). For continuous operation, press the lock-on button (2) and release the ON/OFF-switch.
• To stop the tool, release the ON/OFF-switch. To stop the tool in continuous operation, press the ON/OFF-switch once more.

Do not switch the tool ON or OFF when under load.

Consult your dealer for further information on the appropriate accessories.

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.

Lubrication

Your Power Tool requires no additional lubrication.

Cleaning

Keep the ventilation slots clear and regularly clean the housing with a soft cloth.

Unwanted tools and the environment

Take your tool to an authorized DeWALT repair agent where it will be disposed of in an environmentally safe way.

GUARANTEE

• 30 DAY NO RISK SATISFACTION GUARANTEE If you are not completely satisfied with the performance of your DEWALT tool, simply return it within 30 days, complete as purchased, to the point of purchase, for a full refund or exchange. Proof of purchase must be produced.

• ONE YEAR FREE SERVICE CONTRACT •

If you need maintenance or service for your DEWALT tool, in the 12 months following purchase, it will be undertaken free of charge at an authorized DEWALT repair agent. Proof of purchase must be produced. Includes labour and spare parts for Power Tools. Excludes accessories.

• ONE YEAR FULL WARRANTY •

If your DEWALT product becomes defective due to faulty materials or workmanship within 12 months from the date of purchase, we guarantee to replace all defective parts free of charge or, at our discretion, replace the unit free of charge provided that:

• The product has not been misused.
• Repairs have not been attempted by unauthorized persons.
- Proof of purchase date is produced. This guarantee is offered as an extra benefit and is additional to consumers statutory rights.

For the location of your nearest authorized DEWALT repair agent, please use the appropriate telephone number on the back of this manual.

AMOLADORA ANGULAR DW830/DW840/DW841

¡Enhorabuena!

Director Engineering & Product Development Horst Großmann

X. fopman

MEULEUSE D'ANGLE DW830/DW840/DW841

Félicitations!

L'emballage contient:

Director Engineering & Product Development Horst Großmann

X. Jopmann

DEWALT, Richard-Klinger-Straße 40, D-65510, Idstein, Duitsland

Director Engineering & Product Development Horst Großmann

X. fopman

DEWALT, Richard-Klinger-Straße 40, D-65510, Idstein, Tyskland

Sikkerhetsforskrifter

REBARBADORA DW830/DW840/DW841

Parabéns!

Director Engineering & Product Development Horst Großmann

X. fopmann

DEWALT, Richard-Klinger-Straße 40, D-65510, Idstein, Alemanha

15 Tire as chaves de aperto

Director Engineering & Product Development Horst Großmann

X. Jopman

DW840/DW841 - Irrotus

VINKELSLIPAR DW830/DW840/DW841

Vi gratulerar!

Director Engineering & Product Development Horst Großmann

X. fopmann

DEWALT, Richard-Klinger-Straße 40, D-65510, Idstein, Tyskland

Säkerhetsinstruktioner

DW840/DW841 - Demontering

TAŞLAMA MAKİNESİ DW830/DW840/DW841

Tebrikler!

Calpe House Rock Hill

Black Rock, Co. Dublin

Fax: [phone]

Italia

DEWALT Tel: [phone]

Viale Elvezia 2

20052 Monza (Mi)

Fax: [phone]

Nederland

DEWALT Tel: [phone]

Florijnstraat 10

4879 AH Etten-Leur

Fax: [phone]

www.dewalt.benelux.com

Norge

DEWALT Tel: [phone]

Strømsveien 344

1011 Oslo

Fax: [phone]

www.dewalt-nordic.com

Österreich

DEWALT Tel: 01 - 66116 - 0