DeWalt D21441 User manual

D21441

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ENGLISH
Congratulations!
You have chosen a DEWALT tool. Years of
experience, thorough product development and
innovation make D
EWALT one of the most reliable
partners for professional power tool users.
Technical data
D21441
Voltage V 230
(UK & Ireland) V 230/115
Power input W 770
No-load speed
1st gear min-1
0 - 1,100
2nd gear min-1
0 - 2,700
Maximum drilling range in
steel/wood/concrete mm 13/35/-
Chuck spindle thread size UNF 1/2" x 20
Collar diameter mm 43
Maximum chuck capacity mm 13
Weight kg 2.3
Fuses:
Europe 230 V tools 10 Amperes, mains
U.K. & Ireland 230 V tools 13 Amperes, in plugs
U.K. & Ireland 115 V tools 16 Amperes, mains
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
D21441
D
EWALT declares that these power tools have
been designed in compliance with: 98/37/EC,
89/336/EEC, 73/23/EEC, 86/188/EEC, EN 60745,
EN 60745-2, EN 55014-1, EN 55014-2,
EN 61000-3-2 & EN 61000-3-3.
For more information, please contact D
EWALT
at the address below, or refer to the back of the
manual.
D21441
LpA
(sound pressure) dB(A) 83
LWA
(acoustic power) dB(A) 94
Weighted RMS acceleration value m/s2< 2.5
KpA (sound pressure uncertainty) dB(A) 2.8
KWA
(acoustic power uncertainty) dB(A) 2.8
Director Engineering and Product Development
Horst Großmann
DEWALT, Richard-Klinger-Straße 11
D-65510, Idstein, Germany
ROTARY DRILL D21441

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ENGLISH
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
a Keep work area clean and well lit.
Cluttered and 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.
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.
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
tools may 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.
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.

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c Disconnect the plug from the power source
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 safety instructions for impact drills
● Wear ear protectors with impact drills.
Exposure to noise can cause hearing loss.
● Use auxiliary handles supplied with the tool.
Loss of control can cause personal injury.
● Hold power 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 also
make exposed metal parts of the power tool
"live" and shock the operator.
Package contents
The package contains:
1 Rotary drill
1 Side handle
1 Depth gauge
1 Kitbox (K-models only)
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)
1 Variable speed switch
2 Lock-on button
3 Forward/reverse slider
4 Two gear selector
5 Side handle
6 Depth adjustment rod
7 Keyless chuck
8 Sleeve
Auto-spindle lock
The auto-spindle lock is engaged when the
transmission is stationary. The chuck sleeve can
easily be turned with one hand while the other
supports the unit.
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 60745; therefore
no earth wire is required.

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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
D
EWALT 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.
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 machine (see technical data). The minimum
conductor size is 1.5 mm2
. The cable has to have a
rubber jacket and a grounding conductor.
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 -
Assembly and adjustment
Prior to assembly and adjustment
always unplug the tool.
Inserting and removing a bit (fig. A)
● Open the chuck by turning the sleeve (8)
counterclockwise and insert the bit shank.
● Place the bit in the chuck as far as it will go and
lift slightly before tightening.
● Tighten firmly by turning the sleeve clockwise.
● To remove the bit, proceed in reverse order.
Fitting the side handle (fig. A)
The side handle (5) can be fitted to suit both
RH- and LH-users.
Always use the drill with the side handle
properly assembled.
● Loosen the side handle.
● For RH-users, slide the side handle clamp over
the collar behind the chuck, handle at the left.
● For LH-users, slide the side handle clamp over
the colar behind the chuck, handle at the right.

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● Rotate the side handle to the desired position
and tighten the handle.
Setting the drilling depth (fig. B)
● Insert the required drill bit into the chuck.
● Slacken the side handle (5).
● Fit the depth adjustment rod (6) through the
hole in the side handle clamp.
● Adjust the drilling depth as shown.
● Tighten the side handle.
Forward/reverse slider (fig. A)
● To select forward or reverse rotation, use the
forward/reverse-switch (3) (see arrow on tool).
Always wait until the motor has come to
a complete standstill before changing
the direction of rotation.
Two gear selector (fig. C)
Your tool is fitted with a two gear selector (4) to
vary the speed/torque ratio.
● Release the variable speed switch and select
the required position. This can be done either
with the tool switched off or running under no
load condition. Always align the selector with
the arrow on the gear housing:
1 low speed/high torque
(drilling large holes, driving large screws)
2 high speed/low torque
(drilling smaller holes, drilling in wood)
For speed rates, refer to the technical data.
Do not change gears at full speed or
during use.
Chuck removal (fig. D & E)
● Open the chuck jaws as far as possible.
● Insert a screwdriver into the chuck and remove
the chuck retaining screw (9) by turning
clockwise.
● Tighten an Allen key into the chuck and strike it
with a hammer as shown.
Instructions for use
● Always observe the safety instructions
and applicable regulations.
● Be aware of the location of pipework
and wiring.
● Apply only a gentle pressure to the tool.
Excessive force does not speed up
drilling but decreases tool performance
and may shorten tool life.
Prior to operation:
● Insert the appropriate bit.
● Mark the spot where the hole is to be drilled.
Switching on and off (fig. A)
● To run the tool, press the variable speed switch
(1). The pressure exerted on the variable speed
switch determines the tool speed.
● If necessary, press the lock-on button (2) for
continuous operation and release the switch.
The lock-on button works only in full speed,
forward rotation.
● To stop the tool, release the switch.
● To stop the tool in continuous operation, press
the switch briefly and release it. Always switch
off the tool when work is finished and before
unplugging.
Rotary drilling (fig. A)
● Press the switch (1).
Screwdriving
● Select forward or reverse rotation.
● Press the switch (1).
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.

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Lubrication
Your power tool requires no additional lubrication.
Cleaning
Keep the ventilation slots clear and regularly clean
the housing with a soft cloth.
Protecting the environment
Separate collection. This product
must not be disposed of with normal
household waste.
Should you find one day that your D
EWALT product
needs replacement, or if it is of no further use to
you, do not dispose of it with household waste.
Make this product available for separate collection.
Separate collection of used products
and packaging allows materials to
be recycled and used again. Re-use
of recycled materials helps prevent
environmental pollution and reduces
the demand for raw materials.
Local regulations may provide for separate
collection of electrical products from the household,
at municipal waste sites or by the retailer when you
purchase a new product.
D
EWALT provides a facility for the collection and
recycling of D
EWALT products once they have
reached the end of their working life. To take
advantage of this service please return your
product to any authorised repair agent who will
collect them on our behalf.
You can check the location of your nearest
authorised repair agent by contacting your local
DEWALT office at the address indicated in this
manual. Alternatively, a list of authorised D
EWALT
repair agents and full details of our after-sales
service and contacts are available on the Internet
at: www.2helpU.com
GUARANTEE
● 30 DAY NO RISK SATISFACTION GUARANTEE ●
If you are not completely satisfied with the
performance of your D
EWALT 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
D
EWALT tool, in the 12 months following
purchase, it will be undertaken free of charge
at an authorized D
EWALT 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
D
EWALT repair agent, please use the
appropriate telephone number on the back of
this manual. Alternatively, a list of authorized
D
EWALT repair agents and full details on our
after-sales service are available on the Internet
at www.2helpU.com.

Belgique et Luxembourg DEWALT Tel: +32 (0)015 - 15 47 9211
België en Luxemburg Mechelen Campus, Schaliënhoevedreef 20EFax: +32 (0)015 - 15 47 9210
B-2800 Mechelen www.dewalt.com
Danmark DEWALT Tlf: 70 20 15 10
Sluseholmen 2-4 Fax: [phone]
2450 København SV www.dewalt-nordic.com
Deutschland DEWALT Tel: [phone]
Richard-Klinger-Straße Fax: [phone]
65510 Idstein www.dewalt.de
Ελλάς Black & Decker (Hellas) S.A. Τηλ: [phone]
Στράβωνος 7 & Βουλιαγμένης 159 Φαξ: [phone]
Γλυφάδα 16674, Αθήνα Service: [phone]
España D
EWALT Tel: [phone]
Parque de Negocios “Mas Blau” Fax: [phone]
Edificio Muntadas, c/Bergadá, 1, Of. A6
08820 El Prat de Llobregat (Barcelona)
France DEWALT Tel: [phone]
Le Paisy Fax: [phone]
BP 21, 69571 Dardilly Cedex www.dewalt.fr
Schweiz DeWALT Tel: 01 - 730 67 47
Suisse In der Luberzen 40 Fax: 01 - 730 70 67
Svizzera 8902 Urdorf www.dewalt.ch
Ireland DEWALT Tel: [phone]
Calpe House Rock Hill Fax: [phone]
Black Rock, Co. Dublin www.dewalt.ie
Italia DEWALT Tel: [phone]
Viale Elvezia 2 Fax: [phone]
20052 Monza (Mi) www.dewalt.it
Nederland DEWALT BV Tel: [phone]
Joulehof 12 Fax: [phone]
4622 RG Bergen Op Zoom www.dewalt.com
Norge DEWALT Tel: [phone]
Postboks 4814, Nydalen Fax: [phone]
0422 Oslo www.dewalt-nordic.com
Österreich DEWALT Tel: 01 - 66116 - 0
Werkzeugevertriebs GmbH Fax: 01 - 66116 - 14
Erlaaerstraße 165, Postfach 320,1231 Wien www.dewalt.at
Portugal DEWALT Tel: [phone]
Rua Egas Moniz 173 Fax: [phone]
João do Estoril, 2766-651 Estoril
Suomi DEWALT Puh: 010 400 430
Keilasatama 3 Faksi: [phone]
02150 Espoo www.dewalt-nordic.com
DEWALT Tel: [phone]
Kägelhamnen 3 Fax: [phone]
02150 Esbo www.dewalt-nordic.com
Sverige DEWALT, c/o Regus Tel: [phone]
Fabriksgatan 7 Fax: [phone]
412 50 Göteborg www.dewalt-nordic.com
Türkiye Merkez Servis Tel: [phone]
Tersane Cad. Faks: 0212 361 60 19
Nafe Sokak 1-3/4 Karaköy - İstanbul
United Kingdom DEWALT Tel: [phone]
210 Bath Road Fax: [phone]
Slough, Berks SL1 3YD www.dewalt.co.uk
488072-0806/06