Charger Operation; Wall Mounting; Battery Packs - DeWalt DCS781 Original Instructions Manual

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
D WALT chargers require no adjustment and are designed to be as easy as possible to operate.
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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 D WALTcharger is double insulated in accordance with EN60335; therefore no
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earth wire is required.
If the supply cord is damaged, it must be replaced only by D
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 ; the maximum length is 30 m.
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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 D
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 D
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
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to electric plug and cord.
Make sure that cord is located so that it will not be stepped on, tripped over, or
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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.
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WALT or an authorised
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WALT rechargeable
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WALT
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• 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 into the charger, making sure the battery pack is fully seated
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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
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
G
Fully Charged
H
Hot/Cold Pack Delay*
* 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
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flammable liquids, gases or dust. Inserting or removing the battery from the charger may
ignite the dust or fumes.
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