DeWalt DCS781 User Manual

10
ENGLISH
• Risk of injury when changing theblade.
• Risk of squeezing fingers when opening theguards.
• Health hazards caused by breathing dust developed when sawing wood, especially oak,
beech andMDF.
The following factors increase the risk of breathing problems:
• No dust extractor connected when sawingwood.
• Insufficient dust extraction caused by uncleaned exhaustfilters.
SAVE THESE INSTRUCTIONS
Chargers
DeWALT chargers require no adjustment and are designed to be as easy as possible tooperate.
Electrical Safety
The electric motor has been designed for one voltage only. Always check that the battery pack
voltage corresponds to the voltage on the rating plate. Also make sure that the voltage of your
charger corresponds to that of yourmains.
i
Your DeWALTcharger is double insulated in accordance with EN60335; therefore no
earth wire isrequired.
If the supply cord is damaged, it must be replaced only by DeWALT or an authorised
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.

WARNING: No connection is to be made to the earthterminal.
Follow the fitting instructions supplied with good quality plugs. Recommended fuse: 3A.
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mm
2
; the maximum length is30m.
When using a cable reel, always unwind the cablecompletely.
Important Safety Instructions for All BatteryChargers
SAVE THESE INSTRUCTIONS: This manual contains important safety and operating
instructions for compatible battery chargers (refer to TechnicalData).
• Before using charger, read all instructions and cautionary markings on charger, battery pack, and
product using batterypack.

WARNING: Shock hazard. Do not allow any liquid to get inside charger. Electric shock
mayresult.

WARNING: We recommend the use of a residual current device with a residual current
rating of 30mA orless.

CAUTION: Burn hazard. To reduce the risk of injury, charge only DeWALT rechargeable
batteries. Other types of batteries may burst causing personal injury anddamage.

CAUTION: Children should be supervised to ensure that they do not play with
theappliance.
NOTICE: Under certain conditions, with the charger plugged into the power supply, the
exposed charging contacts inside the charger can be shorted by foreign material. Foreign
materials of a conductive nature such as, but not limited to, steel wool, aluminum foil
or any buildup of metallic particles should be kept away from charger cavities. Always
unplug the charger from the power supply when there is no battery pack in the cavity.
Unplug charger before attempting toclean.
• DO NOT attempt to charge the battery pack with any chargers other than the ones in
this manual. The charger and battery pack are specifically designed to worktogether.
• These chargers are not intended for any uses other than charging De WALT
rechargeable batteries. Any other uses may result in risk of fire, electric shock
orelectrocution.
• Do not expose charger to rain orsnow.
• Pull by plug rather than cord when disconnecting charger. This will reduce risk ofdamage
to electric plug andcord.
• Make sure that cord is located so that it will not be stepped on, tripped over, or
otherwise subjected to damage orstress.
• Do not use an extension cord unless it is absolutely necessary. Use of improper
extension cord could result in risk of fire,electric shock, orelectrocution.
• Do not place any object on top of charger or place the charger on a soft surface
that might block the ventilation slots and result in excessive internal heat. Place the
charger in a position away from any heat source. The charger is ventilated through slots in the
top and the bottom of thehousing.
• Do not operate charger with damaged cord or plug—have them replacedimmediately.
• Do not operate charger if it has received a sharp blow, been dropped, or otherwise
damaged in any way. Take it to an authorised servicecentre.
• Do not disassemble charger; take it to an authorised service centre when service or repair
is required. Incorrect reassembly may result in a risk of electric shock, electrocution orfire.
• In case of damaged power supply cord, the supply cord must be replaced immediately by the
manufacturer, its service agent or similar qualified person to prevent anyhazard.
• Disconnect the charger from the outlet before attempting any cleaning. This will
reduce the risk of electric shock. Removing the battery pack will not reduce thisrisk.
• NEVER attempt to connect two chargerstogether.
• The charger is designed to operate on standard 230V household electrical power. Do
not attempt to use it on any other voltage. This does not apply to the vehicularcharger.
Charging a Battery (Fig.B)
1. Plug the charger into an appropriate outlet before inserting batterypack.
2. Insert the battery pack
3
into the charger, making sure the battery pack is fully seated
in the charger. The red (charging) light will blink repeatedly indicating that the charging
process hasstarted.
3. The completion of charge will be indicated by the red light remaining ON continuously.
The battery pack is fully charged and may be used at this time or left in the charger. To
remove the battery pack from the charger, push the battery release button
4
on the
batterypack.
NOTE: To ensure maximum performance and life of lithium‑ion battery packs, charge the
battery pack fully before firstuse.
Charger Operation
Refer to the indicators below for the charge status of the batterypack.
Charge Indicators
F
Charging
I
G
Fully Charged
J
H
Hot/Cold Pack Delay*
K
* The red light will continue to blink, but a yellow indicator light will be illuminated during this
operation. Once the battery pack has reached an appropriate temperature, the yellow light
will turn off and the charger will resume the chargingprocedure.
The compatible charger(s) will not charge a faulty battery pack. The charger will indicate faulty
battery by refusing tolight.
NOTE: This could also mean a problem with acharger.
If the charger indicates a problem, take the charger and battery pack to be tested at an
authorised servicecentre.
Hot/Cold Pack Delay
When the charger detects a battery pack that is too hot or too cold, it automatically starts a
Hot/Cold Pack Delay, suspending charging until the battery pack has reached an appropriate
temperature. The charger then automatically switches to the pack charging mode. This feature
ensures maximum battery packlife.
A cold battery pack will charge at a slower rate than a warm battery pack. The battery pack
will charge at that slower rate throughout the entire charging cycle and will not return to
maximum charge rate even if the battery packwarms.
The DCB118 charger is equipped with an internal fan designed to cool the battery pack. The fan
will turn on automatically when the battery pack needs to be cooled. Never operate the charger
if the fan does not operate properly or if ventilation slots are blocked. Do not permit foreign
objects to enter the interior of thecharger.
Electronic Protection System
XR Li‑Ion tools are designed with an Electronic Protection System that will protect the battery
pack against overloading, overheating or deepdischarge.
The tool will automatically turn off if the Electronic Protection System engages. If this occurs,
place the lithium‑ion battery pack on the charger until it is fullycharged.
Wall Mounting
These chargers are designed to be wall mountable or to sit upright on a table or work surface.
If wall mounting, locate the charger within reach of an electrical outlet, and away from a
corner or other obstructions which may impede air flow. Use the back of the charger as a
template for the location of the mounting screws on the wall. Mount the charger securely
using drywall screws (purchased separately) at least 25.4mm long with a screw head diameter
of 7–9mm, screwed into wood to an optimal depth leaving approximately 5.5mm of the
screw exposed. Align the slots on the back of the charger with the exposed screws and fully
engage them in theslots.
Charger Cleaning Instructions

WARNING: Shock hazard. Disconnect the charger from the AC outlet before
cleaning. Dirt and grease may be removed from the exterior of the charger using a cloth
or soft non‑metallic brush. Do not use water or any cleaning solutions. Never let any liquid
get inside the tool; never immerse any part of the tool into aliquid.
Battery Packs
Important Safety Instructions for All BatteryPacks
When ordering replacement battery packs, be sure to include catalogue number andvoltage.
The battery pack is not fully charged out of the carton. Before using the battery pack and
charger, read the safety instructions below. Then follow charging proceduresoutlined.
READ ALL INSTRUCTIONS
• Do not charge or use battery in explosive atmospheres, such as in the presence of
flammable liquids, gases or dust. Inserting or removing the battery from the charger may
ignite the dust orfumes.

DeWalt DCS781 Specifications

General

Brand	DeWalt
Model	DCS781
Category	Saw
Language	English