DeWalt DCS391-XE, DCS393-XE Instruction Manual

DCS391-XE, DCS393-XE

18 V CORDLESS 165 mm (6-1/2") CIRCULAR SAW

INSTRUCTION MANUAL

DCS391-XE, DCS393-XE 18 V CORDLESS 165 mm (6-1/2") CIRCULAR SAW

A. Trigger switch lock-off button
B. Trigger switch
C. Battery pack
D. Depth Adjustment Knob
E. Shoe
F. Lower blade guard retracting lever
G. Lower blade guard

H. Blade Clamping Screw
I. Kerf indicator
J. Bevel adjustment knob
K. Blade lock button (not shown)
L. Auxiliary handle
M. Battery release button
N. Blade wrench

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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.

IF YOU HAVE ANY QUESTIONS OR COMMENTS ABOUT THIS OR ANY DEWALT TOOL,
CALL US AT: 1800 444 224 (Aust) or 0800 339 258 (NZ).

SAFETY INSTRUCTIONS FOR POWER TOOLS

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.

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.

The term “power tool” in the warnings refers to your mains-operated (corded) power
tool or battery-operated (cordless) power tool.

SAVE THESE INSTRUCTIONS

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.

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c) Prevent unintentional 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 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 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) BATTERY TOOL USE AND CARE

a) Recharge only with the charger specified by the manufacturer. A charger

that is suitable for one type of battery pack may create a risk of fire when
used with another battery pack.

b) Use power tools only with specifically designated battery packs. Use of any

other battery packs may create a risk of injury and fire.

c) When battery pack is not in use, keep it away from other metal objects like

paper clips, coins, keys, nails, screws, or other small metal objects that
can make a connection from one terminal to another. Shorting the battery

terminals together may cause burns or a fire.

d) Under abusive conditions, liquid may be ejected from the battery; avoid

contact. If contact accidentally occurs, flush with water. If liquid contacts
eyes, additionally seek medical help. Liquid ejected from the battery may

cause irritation or burns.

6) 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.

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. 230 V AC means your
tool will operate on alternating current. As little as 10% lower voltage can cause loss
of power and can result in overheating. All DEWALT tools are factory tested; if this
tool does not operate, check the power supply. Your DEWALT tool is double insulated,
therefore no earth wire is required.

• Young children and the infirm. This appliance is not intended for use by
young children or infirm persons without supervision. Young children should be
supervised to ensure that they do not play with this appliance.

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• Replacement of the supply cord. If the supply cord is damaged, it must be
replaced by the manufacturer or an authorised DEWALT Ser vice Centre in order
to avoid a hazard.

Extension Cords

CAUTION: Use only extension cords that are approved by the country’s Electrical
Authority. Before using extension cords, inspect them for loose or exposed wires,
damaged insulation and defective fittings. Replace the cord if necessary.

MINIMUM GAUGE FOR CORD SETS
For Cable length (m): 7.5 15 25 30 45 60
Use Cable with minimum rating (Amperes)
Tool Amperes

0 - 3.4 7.5 7.5 7.5 7.5 7.5 7.5

3.5 - 5.0 7.5 7.5 7.5 7.5 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 –

Safety Instructions for All Saws

a) DANGER: Keep hands away from cutting area and the blade. Keep your

second hand on auxiliary handle, or motor housing. If both hands are holding

the saw, they cannot be cut by the blade.

b) Do not reach underneath the workpiece. The guard cannot protect you from the

blade below the workpiece.

c) Adjust the cutting depth to the thickness of the workpiece. Less than a full

tooth of the blade teeth should be visible below the workpiece.

d) Never hold piece being cut in your hands or across your leg. Secure the

workpiece to a stable platform. It is important to suppor t the work properly to
minimize body exposure, blade binding, or loss of control.

e) Hold power tool by insulated gripping surfaces when performing an operation

where the cutting tool may contact hidden wiring. Contact with a “live” wire
will also make exposed metal parts of the power tool “live” and shock the
operator.

f) When ripping always use a rip fence or straight edge guide. This improves the

accuracy of cut and reduces the chance of blade binding.

g) Always use blades with correct size and shape (diamond versus round) of

arbor holes. Blades that do not match the mounting hardware of the saw will run
eccentrically, causing loss of control.

h) Never use damaged or incorrect blade washers or bolt. The blade washers and

bolt were specially designed for your saw, for optimum performance and safety
of operation.

Further Safety Instructions for All Saws

CAUSES AND OPERATOR PREVENTION OF KICKBACK:

– Kickback is a sudden reaction to a pinched, bound or misaligned saw blade,

causing an uncontrolled saw to lift up and out of the workpiece toward the
operator;

– When the blade is pinched or bound tightly by the kerf closing down, the blade

stalls and the motor reaction drives the unit rapidly back toward the operator;

– If the blade becomes twisted or misaligned in the cut, the teeth at the back edge

of the blade can dig into the top surface of the wood causing the blade to climb
out of the kerf and jump back toward the operator.

Kickback is the result of saw misuse and/or incorrect operating procedures or
conditions and can be avoided by taking proper precautions as given below:
a) Maintain a firm grip with both hands on the saw and position your arms to

resist kickback forces. Position your body to either side of the blade, but not
in line with the blade. Kickback could cause the saw to jump backwards, but

kickback forces can be controlled by the operator, if proper precautions are taken.

b) When blade is binding, or when interrupting a cut for any reason, release the

trigger and hold the saw motionless in the material until the blade comes to
a complete stop. Never attempt to remove the saw from the work or pull the
saw backward while the blade is in motion or kickback may occur. Investigate

and take corrective actions to eliminate the cause of blade binding.

c) When restarting a saw in the workpiece, center the saw blade in the kerf and

check that saw teeth are not engaged into the material. If saw blade is binding,
it may walk up or kickback from the workpiece as the saw is restarted.

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• Use clamps or another practical way to secure and support the workpiece
to a stable platform. Holding the work by hand or against your body leaves it
unstable and may lead to loss of control.

• Keep your body positioned to either side of the blade, but not in line with the
saw blade. KICKBACK could cause the saw to jump backwards (see Causes and
Operator Prevention of Kickback and KICKBACK).

• Air vents often cover moving parts and should be avoided. Loose clothes,
jewelry or long hair can be caught in moving parts.

• Avoid cutting nails. Inspect for and remove all nails from lumber before cutting.

WARNING: We recommend the use of a residual current device with a residual

current rating of 30mA or less.

WARNING: ALWAYS wear approved protective safety equipment complying with

the following standards:

• Eye protection: AS/NZS1337 Eye Protectors for Industrial Applications;

• Hearing protection: AS/NZS1270 Acoustics – Hearing Protection;

• Respiratory protection: AS/NZS1716 Respiratory Protective Devices.

WARNING: Some dust created by power sanding, sawing, grinding, drilling, and
other construction activities contains chemicals known to cause cancer, birth defects
or other reproductive harm. Some examples of these chemicals are:

• lead from lead-based paints,

• crystalline silica from bricks and cement and other masonry products, and

• arsenic and chromium from chemically-treated lumber.

Your risk from these exposures varies, depending on how often you do this type of
work. To reduce your exposure to these chemicals: work in a well ventilated area, and
work with approved safety equipment, such as those dust masks that are specially
designed to filter out microscopic particles.

• Avoid prolonged contact with dust from power sanding, sawing, grinding,

drilling, and other construction activities. Wear protective clothing and wash
exposed areas with soap and water. Allowing dust to get into your mouth, eyes,

or lay on the skin may promote absorption of harmful chemicals.

WARNING: Use of this tool can generate and/or disburse dust, which may cause

serious and permanent respiratory or other injury. Always use NIOSH/OSHA approved

d) Support large panels to minimize the risk of blade pinching and kickback.

Large panels tend to sag under their own weight. Supports must be placed under
the panel on both sides, near the line of cut and near the edge of the panel.

e) Do not use dull or damaged blades. Unsharpened or improperly set blades

produce narrow kerf causing excessive friction, blade binding and kickback.

f) Blade depth and bevel adjusting locking levers must be tight and secure

before making cut. If blade adjustment shifts while cutting, it may cause binding
and kickback.

g) Use extra caution when making a “plunge cut” into existing walls or other

blind areas. The protruding blade may cut objects that can cause kickback.

LOWER GUARD SAFETY INSTRUCTIONS
a) Check lower guard for proper closing before each use. Do not operate the saw

if lower guard does not move freely and close instantly. Never clamp or tie the
lower guard into the open position. If saw is accidentally dropped, lower guard

may be bent. Raise the lower guard with the retracting handle and make sure it
moves freely and does not touch the blade or any other part, in all angles and
depths of cut.

b) Check the operation of the lower guard spring. If the guard and the spring

are not operating properly, they must be serviced before use. Lower guard
may operate sluggishly due to damaged parts, gummy deposits, or a build-up of
debris.

c) Lower guard should be retracted manually only for special cuts such as

“plunge cuts” and “compound cuts.” Raise lower guard by retracting handle
and as soon as blade enters the material, the lower guard must be released.

For all other sawing, the lower guard should operate automatically.

d) Always observe that the lower guard is covering the blade before placing saw

down on bench or floor. An unprotected, coasting blade will cause the saw to
walk backwards, cutting whatever is in its path. Be aware of the time it takes for
the blade to stop after switch is released.

Additional Specific Safety Instructions for Circular Saws

WARNING: Do not use abrasive wheels or blades.
WARNING: Do not use water feed attachments.