DeWalt DWE4234 User manual

DWE4234
Final Page size: A5 (148mm x 210mm)

B
Copyright
DeWALT
English (original instructions) 3
Français (traduction de la notice d’instructions originale) 14

:27

1
Figure A
A 
Figure B1
B1
Figure B2
B2
3
4
21
9
19
14
13
19 20
19
11
14
12
10
87

2
16
Figure C
C 
Figure D
D 
Figure E
E 
Figure F
F 
8
6
7
15
8
6
7
15
16
16
15
7
8
6
18
5
5
3
A
B

ENGLISH
3
SAVE ALL WARNINGS AND INSTRUCTIONS
FOR FUTURE REFERENCE
The term “power tool” in the warnings refers to your mains-
operated (corded) power tool or battery-operated (cordless)
powertool.
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.
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.
f ) If operating a power tool in a damp location is
unavoidable, use a residual current device (RCD)
protected supply. Use of an RCD 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 personal protective equipment. Always wear
eye protection. Protective equipment such as dust mask,
non-skid safety shoes, hard hat, or hearing protection used
for appropriate conditions will reduce personalinjuries.
Congratulations!
You have chosen a
DeWALT
tool. Years of experience, thorough
product development and innovation make
DeWALT
one of the
most reliable partners for professional power toolusers.
Technical Data
DWE4234
Voltage VAC 220/240
127
Type 1
Power input W1500
No-load/rated speed min-1 10000
Wheel diameter mm 115/125
Wheel thickness mm 6
Spindle diameter M14
Spindle length mm 16
Weight* kg 2.1
* weight includes side handle and guard
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.
NOTICE: Indicates a practice not related to
personal injury which, if not avoided, may result in
propertydamage.
Denotes risk of electricshock.
Denotes risk offire.
WARNING: To reduce the risk of injury, read the
instruction manual.
General Power Tool Safety Warnings
WARNING: Read all safety warnings and all
instructions. Failure to follow the warnings and
instructions may result in electric shock, fire and/or
seriousinjury.
English (original instructions)
ANGLE GRINDERS
DWE4234

4
ENGLISH
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 RULES
Safety Instructions for All Operations
a ) This power tool is intended to function as a grinder,
wire brush or cut-off tool. Read all safety warnings,
instructions, illustrations and specifications
provided with this power tool. Failure to follow all
instructions listed below may result in electric shock, fire
and/or serious injury.
b ) Operations such as polishing are not recommended
to be performed with this power tool. Operations for
which the power tool was not designed may create a
hazard and cause personal injury.
c ) Do not use accessories which are not specifically
designed and recommended by the tool
manufacturer. Just because the accessory can
be attached to your power tool, it does not assure
safeoperation.
d ) The rated speed of the accessory must be at least
equal to the maximum speed marked on the power
tool. Accessories running faster than their rated speed can
break and fly apart.
e ) The outside diameter and the thickness of your
accessory must be within the capacity rating of
your power tool. Incorrectly sized accessories can not be
adequately guarded or controlled.
f ) Threaded mounting of accessories must match the
grinder spindle thread. For accessories mounted by
flanges, the arbour hole of the accessory must fit the
locating diameter of the flange. Accessories that do
not match the mounting hardware of the power tool will
run out of balance, vibrate excessively and may cause loss
of control.
g ) Do not use a damaged accessory. Before each use
inspect the accessory such as abrasive wheel for
chips and cracks, backing pad for cracks, tear or
excess wear, wire brush for loose or cracked wires.
If power tool or accessory is dropped, inspect for
damage or install an undamaged accessory. After
inspecting and installing an accessory, position
yourself and bystanders away from the plane of
the rotating accessory and run the power tool at
maximum no-load speed for one minute. Damaged
accessories will normally break apart during this test time.
h ) Wear personal protective equipment. Depending on
application, use face shield, safety goggles or safety
glasses. As appropriate, wear dust mask, hearing
protectors, gloves and workshop apron capable of
stopping small abrasive or workpiece fragments.
The eye protection must be capable of stopping flying
debris generated by various operations. The dust mask or
c ) Prevent unintentional starting. Ensure the switch
is in the off position before connecting to power
source and/or battery pack, picking up or carrying
the tool. Carrying power tools with your finger on the
switch or energising 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 dust collection
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 tool’s
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 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
ENGLISH
respirator must be capable of filtrating particles generated
by your operation. Prolonged exposure to high intensity
noise may cause hearing loss.
i ) Keep bystanders a safe distance away from work
area. Anyone entering the work area must wear
personal protective equipment. Fragments of
workpiece or of a broken accessory may fly away and
cause injury beyond immediate area of operation.
j ) Hold power tool by insulated gripping surfaces only,
when performing an operation where the cutting
accessory may contact hidden wiring or its own
cord. Cutting accessory contacting a “live” wire may make
exposed metal parts of the power tool “live” and could give
the operator an electric shock.
k ) Position the cord clear of the spinning accessory. If
you lose control, the cord may be cut or snagged and your
hand or arm may be pulled into the spinning accessory.
l ) Never lay the power tool down until the accessory
has come to a complete stop. The spinning accessory
may grab the surface and pull the power tool out of
yourcontrol.
m ) Do not run the power tool while carrying it at your
side. Accidental contact with the spinning accessory
could snag your clothing, pulling the accessory into your
body.
n ) Regularly clean the power tool’s air vents. The
motor’s fan will draw the dust inside the housing and
excessive accumulation of powdered metal may cause
electricalhazards.
o ) Do not operate the power tool near flammable
materials. Sparks could ignite these materials.
p ) Do not use accessories that require liquid coolants.
Using water or other liquid coolants may result in
electrocution or shock.
q ) Do not use Type 11 (flaring cup) wheels on this tool.
Using inappropriate accessories can result ininjury.
r ) Always use side handle. Tighten the handle securely.
The side handle should always be used to maintain control
of the tool at alltimes.
FURTHER SAFETY INSTRUCTIONS FOR ALL
OPERATIONS
Causes and Operator Prevention
of Kickback
Kickback is a sudden reaction to a pinched or snagged rotating
wheel, backing pad, brush or any other accessory. Pinching or
snagging causes rapid stalling of the rotating accessory which
in turn causes the uncontrolled power tool to be forced in the
direction opposite of the accessory’s rotation at the point of the
binding.
For example, if an abrasive wheel is snagged or pinched by the
workpiece, the edge of the wheel that is entering into the pinch
point can dig into the surface of the material causing the wheel
to climb out or kick out. The wheel may either jump toward or
away from the operator, depending on direction of the wheel’s
movement at the point of pinching. Abrasive wheels may also
break under these conditions.
Kickback is the result of tool misuse and/or incorrect operating
procedures or conditions and can be avoided by taking proper
precautions as given below:
a ) Maintain a firm grip on the power tool and position
your body and arm to allow you to resist kickback
forces. Always use auxiliary handle, if provided, for
maximum control over kickback or torque reaction
during start up. The operator can control torque reaction
or kickback forces, if proper precautions are taken.
b ) Never place your hand near the rotating accessory.
Accessory may kickback over your hand.
c ) Do not position your body in the area where power
tool will move if kickback occurs. Kickback will propel
the tool in direction opposite to the wheel’s movement at
the point of snagging.
d ) Use special care when working corners, sharp edges
etc. Avoid bouncing and snagging the accessory.
Corners, sharp edges or bouncing have a tendency to
snag the rotating accessory and cause loss of control
orkickback.
e ) Do not attach a saw chain woodcarving blade or
toothed saw blade. Such blades create frequent kickback
and loss of control.
Safety Warnings Specific for Grinding and
Abrasive Cutting-Off Operations
a ) Use only wheel types that are recommended for your
power tool and the specific guard designed for the
selected wheel. Wheels for which the power tool was not
designed cannot be adequately guarded and are unsafe.
b ) The grinding surface of centre depressed wheels
must be mounted below the plane of the guard lip.
An improperly mounted wheel that projects through the
plane of the guard lip cannot be adequatelyprotected.
c ) The guard must be securely attached to the power
tool and positioned for maximum safety, so the least
amount of wheel is exposed towards the operator.
The guard helps to protect the operator from broken wheel
fragments and accidental contact with wheel and sparks
that could ignite clothing.
d ) Wheels must be used only for recommended
applications. For example: do not grind with the side
of cut-off wheel. Abrasive cut-off wheels are intended
for peripheral grinding, side forces applied to these wheels
may cause them to shatter.
e ) Always use undamaged wheel flanges that are
of correct size and shape for your selected wheel.
Proper wheel flanges support the wheel thus
reducing the possibility of wheel breakage. Flanges
for cut-off wheels may be different from grinding
wheelflanges.

6
ENGLISH
f ) Do not use worn down wheels from larger power
tools. Wheel intended for larger power tool is not suitable
for the higher speed of a smaller tool and may burst.
Additional Safety Warnings Specific for
Abrasive Cutting-Off Operations
a ) Do not “jam” the cut-off wheel or apply excessive
pressure. Do not attempt to make an excessive depth
of cut. Overstressing the wheel increases the loading and
susceptibility to twisting or binding of the wheel in the cut
and the possibility of kickback or wheel breakage.
b ) Do not position your body in line with and behind
the rotating wheel. When the wheel, at the point of
operations, is moving away from your body, the possible
kickback may propel the spinning wheel and the power
tool directly at you.
c ) When wheel is binding or when interrupting a cut
for any reason, switch off the power tool and hold
the power tool motionless until the wheel comes to
a complete stop. Never attempt to remove the cut-
off wheel from the cut while the wheel is in motion
otherwise kickback may occur. Investigate and take
corrective action to eliminate the cause of wheel binding.
d ) Do not restart the cutting operation in the
workpiece. Let the wheel reach full speed and
carefully re-enter the cut. The wheel may bind, walk up
or kickback if the power tool is restarted in the workpiece.
e ) Support panels or any oversized workpiece to
minimize the risk of wheel pinching and kickback.
Large workpieces tend to sag under their own
weight. Supports must be placed under the workpiece
near the line of cut and near the edge of the workpiece on
both sides of the wheel.
f ) Use extra caution when making a “pocket cut” into
existing walls or other blind areas. The protruding
wheel may cut gas or water pipes, electrical wiring or
objects that can cause kickback.
Safety Warnings Specific for Sanding
Operations
a ) Do not use excessively oversized sanding disc
paper. Follow manufacturer’s recommendations,
when selecting sanding paper. Larger sanding paper
extending beyond the sanding pad presents a laceration
hazard and may cause snagging, tearing of the disc
or kickback.
Safety Warnings Specific for Wire Brushing
Operations
a ) Be aware that wire bristles are thrown by the brush
even during ordinary operation. Do not overstress
the wires by applying excessive load to the brush.
The wire bristles can easily penetrate light clothing and/
or skin.
b ) If the use of a guard is recommended for wire
brushing, do not allow any interference of the
wire wheel or brush with the guard. Wire wheel
or brush may expand in diameter due to work and
centrifugalforces.
Additional Safety Information
• Threaded mounting of accessories must match the grinder
spindle thread. For accessories mounted by flanges, the arbor
hole of the accessory must fit the locating diameter of the
flange. Accessories that do not match the mounting hardware
of the power tool will run out of balance, vibrate excessively
and may cause loss of control.
• The grinding surface of the centre depressed wheels must
be mounted below the plane of the guard lip. An improperly
mounted wheel that projects through the plane of the guard
lip cannot be adequately protected.
• When using a different wheel size, the correct wheel
guard for that specific wheel size must also be used.
WARNING: We recommend the use of a residual current
device with a residual current rating of 30mA or less.
Residual Risks
In spite of the application of the relevant safety regulations
and the implementation of safety devices, certain residual risks
cannot be avoided. These are:
• Impairment ofhearing.
• Risk of personal injury due to flyingparticles.
• Risk of burns due to accessories becoming hot
duringoperation.
• Risk of personal injury due to prolongeduse.
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 EN60745; therefore no earth wire is required.
WARNING: 127 V units have to be operated via a fail-safe
isolating transformer with an earth screen between the
primary and secondary winding.
If the supply cord is damaged, it must be replaced by a
specially prepared cord available through the
DeWALT
serviceorganisation.
Mains Plug Replacement
(Middle East and Africa)
If a new mains plug needs to be fitted:
• Safely dispose of the oldplug.
• Connect the brown lead to the live terminal in theplug.
• Connect the blue lead to the neutralterminal.
WARNING: No connection is to be made to the
earthterminal.
Follow the fitting instructions supplied with good quality plugs.
Recommended fuse: 13A.

7
ENGLISH
Using an Extension Cable
An extension cord should not be used unless absolutely
necessary. Use an approved extension cable suitable for
the power input of your charger (see Technical Data). The
minimum conductor size is 1.5 mm2; the maximum length
is30m.
When using a cable reel, always unwind the cablecompletely.
Package Contents
The package contains:
1 Angle grinder
1 Guard
1 Side handle
1 Flange set
1 Two-pin spanner
1 Instruction manual
• 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.
Markings on Tool
The following pictograms are shown on the tool:
Read instruction manual before use.
Wear ear protection.
Wear eye protection.
Date Code Position (Fig. A)
The date code 19, which also includes the year of manufacture,
is printed into thehousing.
Example:
2016 XX XX
Year of Manufacture
Description (Fig. A, E)
WARNING: Never modify the power tool or any part of it.
Damage or personal injury couldresult.
1 Paddle switch
2 Lock-off lever
3 Spindle lock
4 Guard (125 mm)
5 Side handle (Fig.E)
6 Grinding wheel
7 Quick-change backing flange
8 Threaded clamp nut
9 Lock-on button
10 Dust ejection outlet
Intended Use
The DWE4234 heavy-duty angle grinder has been designed for
professional grinding, cutting and sanding applications.
DO NOT use under wet conditions or in the presence of
flammable liquids orgases.
This heavy-duty angle grinder is professional power tools.
DO NOT let children come into contact with the tool.
Supervision is required when inexperienced operators use
thistool.
• This product is not intended for use by persons (including
children) suffering from diminished physical, sensory or
mental abilities; lack of experience, knowledge or skills
unless they are supervised by a person responsible for their
safety. Children should never be left alone with thisproduct.
Anti-vibration Side Handle (Fig.E)
The anti-vibration side handle 5 offers added comfort by
absorbing the vibrations caused by the tool.
Keyless Guard (Fig.A)
The keyless guard 4 allows for quick adjustment during the
application to enhance application versatility.
Dust Ejection System (Fig.A)
The dust ejection system 10 prevents dust pile-up around
the guard and motor inlet, and minimises the amount of dust
entering the motor housing.
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.
Clutch
The torque limiting clutch reduces the maximum torque
reaction transmitted to the operator in case of jamming of a
disc. This feature also prevents the gearing and electric motor
from stalling. The torque limiting clutch has been factory-set
and cannot be adjusted.
No-volt Release Switch
The on/off switch has a no-volt release function: should the
power be shut off for some reason, the switch has to be
deliberately reactivated.
Overload Protection
The power supply to the motor will be stopped in case of motor
overload. The power will return once the tool has cooled down
to suitable operating temperature.

8
ENGLISH
ASSEMBLY AND ADJUSTMENTS
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. Before reconnecting the tool, depress and
release the trigger switch to ensure that the tool is off. An
accidental start-up can cause injury.
Attaching Side Handle (Fig.E)
WARNING: Before using the tool, check that the handle is
tightened securely.
WARNING: The side handle should always be used to
maintain control of the tool at all times.
Screw the side handle 5 tightly into one of the holes 18 on
either side of the gear case.
Guards
CAUTION: Guards must be used with all grinding
wheels, cutting wheels, sanding flap discs, wire
brushes, and wire wheels. The tool may be used
without a guard only when sanding with conventional
sanding discs. Refer to Figure A to see guards provided
with the unit. Some applications may require purchasing
the correct guard from your local dealer or authorized
service centre.
NOTE: Edge grinding and cutting can be performed with Type
27 wheels designed and specified for this purpose; 6.35 mm
thick wheels are designed for surface grinding while thinner
Type 27 wheels need to be examined for the manufacturer's
label to see if they can be used for surface grinding or only
edge grinding/cutting. A Type 1 guard must be used for any
wheel where surface grinding is forbidden. Cutting can also be
performed by using a Type41 wheel and a Type 1guard.
NOTE: See the Accessories Chart to select the proper guard /
accessory combination.
Adjusting and Mounting Guard (Fig. B)
CAUTION: Turn unit off and unplug the tool before
making any adjustments or removing or installing
attachments or accessories.
CAUTION: BEFORE operating the tool, identify which
guard adjustment option your tool is set to.
Adjustment Options
For guard adjustment, the guard release lever14 engages
one of the alignment holes12 on the guard collar using a
ratcheting feature. Your grinder offers two options for this
adjustment.
• One-touchTM: In this position the engaging face is slanted
and will ride over to the next alignment hole when guard
is rotated in a clockwise direction (spindle facing user) but
self-locks in the anti-clockwise direction.
• Two-touchTM:In this position the engaging face is straight
and squared off. It will NOT ride over to the next alignment
hole unless guard release lever is pressed and held while
simultaneously rotating the guard in either a clockwise or
anti-clockwise direction (spindle facing user).
One-TouchTM Two-TouchTM
Setting Guard Adjustment Options
To adjust the guard release lever14 for desired
adjustmentoption:
1. Remove screw13 using a T20 bit.
2. Remove the guard release lever taking note of the spring
position. Choose the end of the lever for the desired
adjustment option. One-touch will use the slanted end of
the lever14 to engage the alignment holes12 on the
guard collar. Two-touch will use the squaredend to engage
the alignmnet holes12 on the guard collar.
3. Replace the lever, positioning the chosen end under the
spring19. Ensure the lever is in proper contact with
thespring.
4. Replace screw and torque to 2.0-3.0N-m. Ensure proper
installation with spring return function by depressing guard
release lever14.
Mounting Guard (Fig. B)
CAUTION: Prior to mounting guard, ensure the screw,
lever, and spring are fitted correctly before mounting
theguard.
1. With the spindle facing the operator, press and hold the
guard release lever14.
2. Align the lugs11 on the guard with the slots20 on the
gearcase.
3. Push the guard down until the guard lugs engage and
rotate them in the groove on the gear case hub. Release the
guard release lever.
4. To position the guard:
One-touchTM: Rotate the guard clockwise into the desired
working position. Press and hold the guard release lever14
release lever to rotate the guard in the anti-clockwise
direction.
Two-touchTM:Press and hold the guard release lever14.
Rotate the guard clockwise or anti-clockwise into the
desired working position.
NOTE: The guard body should be positioned between the
spindle and the operator to provide maximum operator
protection.
The guard release lever should snap into one of the
alignment holes12 on the guard collar. This ensures that
the guard is secure.
5. To remove the guard, follow steps 1–3 of these instructions
in reverse.