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DWE396
DWE397
DWE398
www .
.eu
DWE399
Page 2
Figure 1
b
d
Figure 2
c
f
h
g
a
q
e
Figure 3
l
m
g
l
k
k
1
Page 3
Figure 4
Figure 5
o
n
j
f
o
p
i
n
2
Page 4
Figure 6
3
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ALLIGATOR SAW
DWE396, DWE397, DWE398, DWE399
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
DWE396 DWE397 DWE398 DWE399
Voltage V 230 230 230 230
UK & Ireland V 230/115 230/115 230/115 230/115
Type 1 1 1 1
Power input W 1,600 1,700 1,700 1,700
No load speed min
Stroke length mm 40 40 40 40
Cutting length mm 295 430 430 430
Cord length m 4.0 4.0 4.0 4.0
Weight kg 5.3 5.5 5.5 5.5
LPA (sound pressure) dB(A)
KPA (sound pressure
uncertainty) dB(A)
LWA (sound power) dB(A)
KWA (sound power
uncertainty) dB(A)
-1
3,000 3,000 3,000 3,000
95 95 95 95
3.0 3.0 3.0 3.0
104.0 104.0 104.0 104.0
5.6 5.6 5.6 5.6
Vibration total values (triax vector sum) determined according to EN 60745:
Vibration emission value a
Cutting clay building blocks
a
=
h,PCB
Uncertainty K = m/s²
Vibration emission value a
Cutting wood/chipboard & plastic
a
=
h,WP
Uncertainty K = m/s²
Vibration emission value a
Cutting cellular concrete
a
=
h,CC
Uncertainty K = m/s²
Vibration emission value a
Cutting insulation material
a
=
h,IM
Uncertainty K = m/s²
for DT2974
h
m/s²
for DT2372
h
m/s²
for DT2975
h
m/s²
for DT2979
h
m/s²
5.4 5.4 5.4 5.4
1.5 1.5 1.5 1.5
5.4 5.4 5.4 5.4
1.5 1.5 1.5 1.5
5.4 5.4 5.4 5.4
1.5 1.5 1.5 1.5
5.4 5.4 5.4 5.4
1.5 1.5 1.5 1.5
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The vibration emission level given in this information
sheet has been measured in accordance with a
standardised test given in EN 60745 and may be
used to compare one tool with another. It may be
used for a preliminary assessment of exposure.
WARNING: The declared vibration
emission level represents the main
applications of the tool. However if the
tool is used for different applications,
with different accessories or poorly
maintained, the vibration emission may
differ. This may significantly increase the
exposure level over the total working
period.
An estimation of the level of exposure to
vibration should also take into account
the times when the tool is switched off
or when it is running but not actually
doing the job. This may significantly
reduce the exposure level over the total
working period.
Identify additional safety measures to
protect the operator from the effects of
vibration such as: maintain the tool and
the accessories, keep the hands warm,
organisation of work patterns.
Fuses
Europe 230 V tools 10 Amperes, mains
U.K. & Ireland 230 V tools 13 Amperes, in plugs
EC-Declaration of Conformity
MACHINERY DIRECTIVE
DWE396, DWE397, DWE398, DWE399
D
EWALT declares that these products described
under Technical Data are in compliance with:
2006/42/EC, EN 60745-1, EN 60745-2-11.
These products also comply with Directive
2004/108/EC and 2011/65/EU. For more
information, please contact DEWALT at the following
address or refer to the back of the manual.
The undersigned is responsible for compilation of the
technical file and makes this declaration on behalf of
DEWALT.
Horst Grossmann
Vice President Engineering and
Product Development
DEWALT, Richard-Klinger-Strasse 11,
D-65510, Idstein, Germany
01.08.2012
Defi nitions: 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.
24
WARNING: To reduce the risk of injury,
read the instruction manual.
General Power Tool Safety Warnings
WARNING! Read all safety warnings
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.
b) Do not operate power tools in explosive
and all instructions. Failure to follow
the warnings and instructions may result
in electric shock, fire and/or serious
injury.
SAVE ALL WARNINGS AND INSTRUCTIONS
FOR FUTURE REFERENCE
Cluttered or dark areas invite accidents.
atmospheres, such as in the presence of
flammable liquids, gases or dust. Power
tools create sparks which may ignite the dust
or fumes.
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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.
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.
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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 Rules for Alligator
Saws
• Hold power tool by insulated gripping
surfaces, 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.
PLUGGING INTO THE MAINS, SWITCHING ON AND OFF
• Always ensure that the alligator saw is switched
OFF before plugging into the mains.
• After switching OFF, never attempt to stop the
saw blades with your fingers.
Never put the saw down on a table
or work bench unless switched OFF.
The saw blades will keep running up to
10seconds after the machine has been
switched OFF.
WHEN SAWING
• Remove all nails and metal objects from the
workpiece before starting work.
• Wherever possible, use clamps and vices to
fasten the workpiece securely.
• Do not attempt to saw extremely small
workpieces.
• Do not bend too far forward. Make sure
that you always stand firmly, particularly on
scaffolding and ladders.
• Always hold the saw with both hands.
• Do not use the saw for cutting curves and
pockets.
CHECKING AND CHANGING THE SAW BLADES
• Unplug the tool before cleaning or changing the
saw blades.
• Only use DEWALT saw blades conforming to
the specifications contained in these operating
instructions.
• Only sharp saw blades in perfect working
condition should be used; cracked or bent saw
blades should be discarded and replaced at
once.
• Always use suitable gloves when handling the
saw blades and rough work materials.
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 flying particles.
– Risk of burns due to accessories becoming hot
during operation.
– Risk of personal injury due to prolonged use.
Markings on Tool
The following pictograms are shown on the tool:
Read instruction manual before use.
Wear ear protection.
Wear eye protection.
Do not expose the power tool to humidity.
Do not use the power tool if the main
cable is damaged.
DATE CODE POSITION (FIG. 1)
The Date Code (q), which also includes the year of
manufacture, is printed into the housing.
Example:
2012 XX XX
Year of Manufacture
Package Contents
The package contains:
1 Alligator saw
1 TCT saw blade set for low density building
block (DWE396, DWE397)
1 TCT saw blade set for medium density building
block (DWE398)
1 TCT saw blade set for cellular concrete and
plaster board (DWE399)
1 Hex key
1 Cutting slot scraper (DWE399 only)
1 Instruction manual
1 Exploded drawing
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• 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 (fi g. 1)
WARNING: Never modify the power
tool or any part of it. Damage or
personal injury could result.
a. On/off trigger switch
b. Lock-off button
c. Rear grip handle
d. Front handle
e. Saw blades
f. Bar
g. Hex key
h. Dust port
INTENDED USE
Your DEWALT alligator saw DWE396, DWE397,
DWE398 and DWE399 has been designed for
professional sawing applications of clay building
blocks, cellular concrete, wood, plastic and
insulation materials with suitable saw blade.
DO NOT use under wet conditions or in presence of
flammable liquids or gases.
DO NOT let children come into contact with the
tool. Supervision is required when inexperienced
operators use this tool.
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.
If the supply cord is damaged, it must be replaced
by a specially prepared cord available through the
DEWALT service organisation.
Mains Plug Replacement
(U.K. & Ireland Only)
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.
Follow the fitting instructions supplied with good
quality plugs. Recommended fuse: 13 A.
WARNING: No connection is to be
made to the earth terminal.
Using an Extension Cable
If an extension cable is required, use an approved 3–
core extension cable suitable for the power input of
this tool (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.
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 setups or when making repairs. Be sure
the trigger switch is in the OFF position.
An accidental start-up can cause injury.
Replacing the Saw Blades
REMOVING THE SAW BLADES (FIG. 2–5)
1. Place the tool upside down on a flat, stable
work surface.
2. Loosen the gearcase cap screw (k) with
the hex key (g). When loosened, the gearcase
cap (l) should release and spring open.
3. With the hex key (g), loosen both of the blade
setting screws (m). The screws will be held in
place by the screw clips.
4. Carefully pull the saw-blade-end up until it is
disengaged from and clear of the Blade-Clampsystem.
5. Pull the saw blade back and out of the front
guard (n) and take it off of the bar (f).
6. Repeat this procedure for the other saw blade.
FITTING THE SAW BLADES (FIG. 4)
1. Slide one saw-blade into the blade guide slot (i)
making sure that the end with the slotted hole
(p) fits into the front guard (n).
2. Slide the back of the saw blade down until the
threaded hole (o) aligns with the blade setting
screw (m).
3. Repeat this procedure for the other saw blade.
4. Tighten both saw blade setting screws (m)
securely by pressing and turning simultaneously
with the short end of the hex key (g).
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5. Close the gearcase cap (l) and tighten the
gearcase cap screw.
WARNING: Before operation let the
saw blades run freely for approx. 20 s.
Saw Blades
Cat. No. Material
to be cut
DWE396 Rough wood HSS DT2970
Fine wood HSS DT2971
Fine wood TCT DT2972
Low density building block TCT T12 DT2973
Medium density building block TCT T20 DT2977
DWE397 Rough wood HSS DT2978
Low density building block TCT T12 DT2974
Medium density building block TCT T20 DT2976
Insulation materials HSS DT2979
Celluar contrete TCT 12 DT2975
DWE398 Rough wood HSS DT2978
Low density building block TCT T12 DT2974
Medium density building block TCT T20 DT2976
Insulation materials HSS DT2979
Celluar contrete TCT 12 DT2975
DWE399 Rough wood HSS DT2978
Low density building block TCT T12 DT2974
Medium density building block TCT T20 DT2976
Insulation materials HSS DT2979
Celluar contrete TCT 12 DT2975
Recommended
saw blade type
Prior to Operation (fi g. 1)
• Mount the appropriate type of saw blade.
• Check that the tool is running properly and can
perform all its functions. Make sure that the bar
(f) is still straight and the saw blades (e) and the
housing are undamaged.
OPERATION
Instructions for Use
WARNING: Always observe the safety
WARNING: To reduce the risk
WARNING:
• Ensure the material to be sawn is
instructions and applicable regulations.
of serious personal injury, turn
tool off and disconnect tool from
power source before making any
adjustments or removing/installing
attachments or accessories.
secured in place.
• Apply only a gentle pressure to the
• Avoid overloading.
tool and do not exert side pressure on
the saw blade.
WARNING: For applications where
mineral dust or hardwood is emitted due
to the work process the machine shall be
connected to a suitable dust extraction
system.
Proper Hand Position (fi g. 1, 6)
WARNING: To reduce the risk of
Proper hand position requires one hand on the
front handle (d) with the other hand on the rear grip
handle (c).
serious personal injury, ALWAYS use
proper hand position as shown.
WARNING: To reduce the risk of
serious personal injury, ALWAYS hold
securely in anticipation of a sudden
reaction.
Switching On and Off (fi g. 1)
For safety reasons the ON/OFF switch (a) is
equipped with a lock-off button (b).
1. Push the lock-off button (b) to unlock the tool.
2. To run the tool, press the ON/OFF switch (a).
As soon as the ON/OFF switch is released the
lock-off switch is automatically activated to
prevent unintended starting.
3. Always switch off the tool before unplugging.
Sawing (fi g. 1, 3, 4, 6)
NOTICE: Do not use the saw for cutting
For long, straight cuts first draw a line on the
workpiece and follow the line.
Make downward cuts only. Avoid cutting earth as
this will blunt the saw blades very quickly.
When using a saw horse always cut on the outside
of the saw horse arms.
1. Clamp the workpiece on one side only to
2. Hold your D
curves or pockets. Make sure the bar
end protrudes from the workpiece.
prevent the bar from jamming in the workpiece.
Should this happen, ease open the cut with
wedges to relieve the strain on the blade. Do
not try to wrench the saw free.
EWALT power tool by the front
handle (d) and the rear grip handle (c) to guide
the saw properly.
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3. Switch the tool on before placing blade in
contact with the workpiece. Refer to Switching
On and Off instruction in this manual.
WARNING: Apply only a gentle
pressure to the tool and do not exert
side pressure on the saw blade.
4. After blades have engaged the workpiece,
guide the tool back and forth in a rotating, see
saw like motion as the blades cut down through
the workpiece. Refer to Figure 6.
5. Once cut is complete, release the trigger switch.
To increase performance and lifetime of non-painted
saw blades, regularly apply oil to the blades and in
the oil holes (j) (every 15–30 min.). Do not lubricate
painted blades.
Regularly check the saw blade setting screws (m).
Sawing in Cellular Concrete,
Low Density and Medium Density
Building Blocks (fi g. 5)
WARNING: Cellular concrete, low
density and medium density building
blocks contain lime and quartz sand.
After use to guarantee optimum
performance, the saw blades, the bar
and the saw blade guide slot (i) must be
thoroughly cleaned, using the cutting
slot scraper. (DWE399 only)
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.
Lubrication
• Lubricate the saw blades (if fitted with
non-painted blades), the bar and the saw blade
guide slot upon cleaning. Do not lubricate
painted blades.
• If the tool will not be used for a long period of
time, coat the non-painted saw blades and fill
the oil holes with a little oil (e.g., machine oil) Do
not oil painted blades.
Let the tool run for a few seconds to enable the
oil to reach all parts. This protects the tool from
corrosion.
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
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.
Regularly remove the saw blades after cutting
cellular concrete or thermal building blocks.
Thoroughly clean the saw blades and the bar. To
clean the saw blade guide slot use the scraper
supplied with the tool. (DWE399 ONLY)
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.
Protecting the Environment
Separate collection. This product must
not be disposed of with normal
household waste.
Should you find one day that your DEWALT 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.
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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 DEWALT 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 DEWALT
repair agents and full details of our after-sales
service and contacts are available on the Internet at:
www.2helpU.com.
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GUARANTEE
DEWALT is confident of the quality of its
products and offers an outstanding guarantee
for professional users of the product. This
guarantee statement is in addition to and in
no way prejudices your contractual rights as a
professional user or your statutory rights as a
private non-professional user. The guarantee
is valid within the territories of the Member
States of the European Union and the
European Free Trade Area.
• 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 with all
original components, as purchased, to
the point of purchase, for a full refund or
exchange. The product must have been
subject to fair wear and tear and proof of
purchase must be produced.
• ONE YEAR FREE SERVICE CONTRACT •
If you need maintenance or service for your
EWALT tool, in the 12 months following
D
purchase, you are entitled to one service free
of charge. It will be undertaken free of charge
at an authorised DEWALT repair agent. Proof
of purchase must be produced. Includes
labour. Excludes accessories and spare parts
unless failed under warranty.
• ONE YEAR FULL WARRANTY •
EWALT product becomes defective
If your D
due to faulty materials or workmanship
within 12 months from the date of purchase,
DEWALT guarantees 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;
• The product has been subject to fair
wear and tear;
• Repairs have not been attempted by
unauthorised persons;
• Proof of purchase is produced;
• The product is returned complete with all
original components.
If you wish to make a claim, contact your
seller or check the location of your nearest
authorised DEWALT repair agent in the
DEWALT catalogue or contact your DEWALT
office at the address indicated in this manual.
A list of authorised DEWALT repair agents and
full details of our after-sales service is available
on the Internet at: www.2helpU.com.
ENGLISH
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