Panasonic EY4640 User manual

Operating Instructions
Bedienungsanleitung
Instructions d’utilisation
Istruzioni per l’uso
Gebruiksaanwijzing
Manual de instrucciones
Brugsvejledning
Driftsföreskrifter
Bruksanvisning
Käyttöohjeet
Before operating this unit, please read these instructions completely and save this manual for future use.
Vor Inbetriebnahme des Gerätes die Betriebsanleitung bitte gründlich durchlesen und diese Broschüre zum späteren Nachschlagen
sorgfältig aufbewahren.
Lire entièrement les instructions suivantes avant de faire fonctionner l’appareil et conserver ce mode d’emploi à des fins de consultation
ultérieure.
Prima di usare questa unità, leggere completamente queste istruzioni e conservare il manuale per usi futuri.
Lees deze gebruiksaanwijzing aandachtig door voor u het apparaat in gebruik neemt en bewaar de gebruiksaanwijzing voor eventuele
naslag.
Antes de usar este aparato por primera vez, lea todas las instrucciones de este manual y guarde el manual para poderlo consultar en el
futuro.
Gennemlæs denne betjeningsvejledning før brugen og gem den til fremtidig brug.
Läs igenom hela bruksanvisningen innan verktyget tas i bruk. Spara bruksanvisningen för senare användning.
Før enheten tas i bruk, vennligst les disse alle anvisningene og oppbevar deretter bruksanvisningen for senere bruk.
Lue ohjeet huolella ennen laitteen käyttöönottoa ja säilytä tämä käyttöohje tallessa tulevaa tarvetta varten.
Cordless Angle Grinder
Kabelloser Winkelschleifer
Meule d'angle sans fil
Smerigliatrice angolare senza fili
Snoerloze haakse slijper
Amoladora angular inalámbrica
Akku-vinkelslibemaskine
Sladdlös vinkelslipmaskin
Batteridrevet vinkelsliper
Ladattava kulmahiomakone
Model No: EY4640

- 9 -
Original instructions: English
Translation of the original instructions:
Other languages
I. INTENDED USE
Thank you for purchasing the Panasonic
Angle Grinder. The powerful grinding
action of this tool, combined with the
convenience of its rechargeable battery
pack, provides you with great grinding
performance.
This Angle Grinder is only to be used for
grinding and cutting-off.
DANGER:
This product is a grinding tool, designed
to grind. It has a rotating disc which is
capable of cutting you deeply, causing
serious injury or death. As a result,
please read this manual and the cau-
tionary markings on the tool carefully,
and obey all of the Safety Instructions to
avoid such injury.
WARNING:
To reduce the risk of injury, always
use proper guards when grinding.
How to Use This Manual
• Please read this manual completely
before starting to use your grinder. If
you let someone else use the grinder,
make sure they either read this ma-
nual or are fully instructed in the proper
use and all safety precautions con-
cerning the grinder.
• Please keep this manual for future
reference. It contains important safety
information that you must follow to use
the grinder safely.
• This manual and product use the fol-
lowing signal words:
NOTE:
Notes provide additional information
that you should know about the grinder.
CAUTION:
Caution indicates a potentially ha-
zardous situation, which could result in
minor or moderate injury if not avoided.
Cautions also alert you to unsafe prac-
tices to be avoided.
WARNING:
Warning indicates a potentially ha-
zardous situation, which could result
in serious injury or death if not
avoided.
DANGER:
Danger indicates an imminent hazard
which will result in serious injury or
death if not avoided.
Read the “Safety Instructions” booklet
and the following before using.

- 10 -
II. ADDITIONAL
SAFETY RULES
Safety instructions for all op-
erations
Safety warning common for Grinding
or Abrasive Cutting-off operations:
1) This power tool is intended to
function as a grinder, or cut-off
tool. Read all safety warnings,
instructions, illustrations and
specifications provided with this
power tool. Failure to follow all in-
structions listed below may result in
electric shock, fire and/or serious
injury.
2) Operations such as sanding,
wire brushing, 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.
3) Do not use accessories which
are not specifically designed and
recommended by the tool man-
ufacturer. Just because the ac-
cessory can be attached to your
power tool, it does not assure safe
operation.
4) 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.
5) The outside diameter and the
thickness of your accessory must
be within the capacity rating of
your power tool. Incorrectly sized
accessories cannot be adequately
guarded or controlled.
6) The arbour size of wheels, flanges,
backing pads or any other ac-
cessory must properly fit the
spindle of the power tool. Acces-
sories with arbour holes that do not
match the mounting hardware of
the power tool will run out of bal-
ance, vibrate excessively and may
cause loss of control.
7) Do not use a damaged accessory.
Before each use inspect the ac-
cessory such as abrasive wheels
for chips and cracks. If power tool
or accessory is dropped, inspect
for damage or install an unda-
maged accessory. After inspect-
ing and installing an accessory,
position yourself and bystanders
away from the plane of the rotat-
ing accessory and run the power
tool at maximum no-load speed
for one minute. Damaged acces-
sories will normally break apart dur-
ing this test time.
8) Wear personal protective
equipment. Depending on ap-
plication, 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 eye
protection must be capable of
stopping flying debris generated by
various operations. The dust mask
or respirator must be capable of fil-
trating particles generated by your
operation. Prolonged exposure to
high intensity noise may cause
hearing loss.
9) 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.
10) Hold power tool by insulated grip-
ping surfaces only, when perform-
ing an operation where the cutting
accessory may contact hidden wir-
ing or its own cord. Cutting acces-
sory contacting a “live” wire may
make exposed metal parts of the
power tool “live” and shock the op-
erator.

- 11 -
11) 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 acces-
sory.
12) Never lay the power tool down
until the accessory has come to a
complete stop. The spinning ac-
cessory may grab the surface and
pull the power tool out of your con-
trol.
13) 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.
14) Regularly clean the power tool’s
air vents. The motor’s fan will draw
the dust inside the housing and
excessive accumulation of pow-
dered metal may cause electrical
hazards.
15) Do not operate the power tool near
flammable materials. Sparks could
ignite these materials.
16) Do not use accessories that re-
quire liquid coolants. Using water
or other liquid coolants may result in
electrocution or shock.
Further safety instructions for
all operations
Kickback and Related Warnings
Kickback is a sudden reaction to a
pinched or snagged rotating wheel,
backing pad, brush or any other acces-
sory. 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 direc-
tion of the wheel’s movement at the
point of pinching. Abrasive wheels may
also break under these conditions.
Kickback is the result of power tool
misuse and/or incorrect operating
procedures or conditions and can be
avoided by taking proper precautions
as given below.
1) 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 reactions or kickback
forces, if proper precautions are
taken.
2) Never place your hand near the
rotating accessory. Accessory may
kickback over your hand.
3) 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.

- 12 -
4) Use special care when working
corners, sharp edges etc. Avoid
bouncing and snagging the ac-
cessory. Corners, sharp edges or
bouncing have a tendency to snag
the rotating accessory and cause
loss of control or kickback.
5) Do not attach a saw chain wood-
carving blade or toothed saw
blade. Such blades create frequent
kickback and loss of control.
Additional safety instructions for
grinding and cutting-off opera-
tions
Safety warnings specific for Grinding
and Abrasive Cutting-off operations:
1) Use only wheel types that are
recommended for your power
tool and the specific guard de-
signed for the selected wheel.
Wheels for which the power tool
was not designed cannot be ade-
quately guarded and are unsafe.
2) The guard must be securely at-
tached to the power tool and po-
sitioned for maximum safety, so
the least amount of wheel is ex-
posed towards the operator. The
guard helps to protect operator
from broken wheel fragments and
accidental contact with wheel.
3) Wheels must be used only for rec-
ommended applications. For exam-
ple: 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.
4) 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 grind-
ing wheel flanges.
5) 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 Spe-
cific for Abrasive Cutting-Off Op-
erations:
1) Do not “jam” the cut-off wheel or
apply excessive pressure. Do
not attempt to make an exces-
sive 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.
2) Do not position your body in line
with and behind the rotating
wheel. When the wheel, at the point
of operation, is moving away from
your body, the possible kickback
may propel the spinning wheel and
the power tool directly at you.
3) 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 com-
plete stop. Never attempt to re-
move the cut-off wheel from the
cut while the wheel is in motion
otherwise kickback may occur.
Investigate and take corrective ac-
tion to eliminate the cause of wheel
binding.
4) Do not restart the cutting opera-
tion in the workpiece. Let the
wheel reach full speed and care-
fully reenter the cut. The wheel
may bind, walk up or kickback if the
power tool is restarted in the work-
piece.
5) 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.

- 13 -
6) 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.
Symbol Meaning
V Volts
Direct current
n Rated speed
…min
-1
Revolutions or reci-
procations per minutes
Ah Electrical capacity of
battery pack
To reduce the risk of
injury, user must read
and understand in-
struction manual.
For indoor use only.
Always wear eye pro-
tection
WARNING:
•Do not use other than the Panasonic
battery packs that are designed for
use with this rechar
g
eable tool.
• Panasonic is not responsible for any
damage or accident caused by the
use of the recycled battery pack and
the counterfeit batter
y
p
ack.
•Do not dispose of the battery pack in
a fire, or expose it to excessive heat.
•Do not drive the likes of nails into the
battery pack, subject it to shocks,
dismantle it, or attem
p
t to modif
y
it.
•Do not allow metal objects to touch
the batter
y
p
ack terminals.
•Do not carry or store the battery pack
in the same container as nails or
similar metal objects.
• Do not charge the battery pack in a
high-temperature location, such as
next to a fire or in direct sunlight.
Otherwise, the battery may overheat,
catch fire, or ex
p
lode.
• Never use other than the dedicated
charger to charge the battery pack.
Otherwise, the battery may leak,
overheat, or explode.
• After removing the battery pack from
the tool or the charger, always reat-
tach the pack cover. Otherwise, the
battery contacts could be shorted,
leadin
g
to a risk of fire.
• When the Battery Pack Has Deterio-
rated, Replace It with a New One.
Continued use of a damaged battery
pack may result in heat generation,
ignition or battery rupture.
III. ASSEMBLY
NOTE:
When attaching or removing a slide
handle, disconnect battery pack from
tool.
CAUTION:
• Always be sure that the side handle
is installed securely before operation.
Screw the side handle securely as
shown in the figure.
CAUTION:
• Never actuate the lock pin when the
spindle is rotating. The tool may be
damaged.
Press the lock button to prevent spindle
rotation when installing or removing
parts, such as grinding disc, disc guard,
etc.

- 14 -
Installing or removing disc
Inspection before use
• Has the correct grinding disc
been mounted for the object to be
ground?
• Has the proper diameter of the
grinding disc been mounted for
the tool rating?
• Has the proper grinding disc
compiled to safety standard listed
below been mounted?
Europe – EN, Australia - AS
1. Grinding disc
guard
2. Spindle
3. Grinding disc
guard fixing
screw
CAUTION:
• When using, the Grinding disc guard
must be installed on the tool so that
the closed side of the guard always
faces toward the operator.
• Ensure that blotters are used when
they are provided with the bonded ab-
rasive product and when they are re-
quired;
WARNING:
• Always use supplied guard when us-
ing tool. Grinding disc can shatter
during use and Grinding disc guard
helps to reduce chances of personal
injury.
1. Install the Grinding disc guard, and
then securely tighten the screw.
1. Clamp nut
2. Grinding disc
3. Disc flange
2. Install the disc flange and the disc
to the spindle in order as shown in
the figure.
3. Tighten the clamp nut onto the
spindle so that hollow side faces
opposite direction to the disc.
4. Push the Spindle lock button to
secure the spindle in place, and
then use the clamp nut wrench to
tighten the clamp nut securely.
1. Spindle lock
button
5. To remove the grinding disc, follow
the installation procedure in re-
verse.
Attaching or Removing Battery
Pack
1. To connect the battery pack:
Line up the alignment marks and at-
tach the battery pack.
• Slide the battery pack until it locks
into position.
2. To remove the battery pack:
Pull the button from the front to re-
lease the battery pack.
Button
A
lignment marks
1
Make sure
the side.
2
1
3
3
2
1

- 15 -
IV. OPERATION
NOTE:
Be aware that this tool is always in
an operating condition, since it
does not have to be plugged into
an electrical outlet.
Power switch operation
1. Power switch
CAUTION:
• Before inserting the battery pack
into the tool, always make sure that
the power switch operates properly
and returns to the “OFF” position
when the rear of the power switch
is depressed.
• Power switch can be locked in “ON”
position. Stay alert when locking
tool in “ON” position and grasp the
tool firmly using support handle and
grip.
To start the tool, press and slide the
power switch toward the “ON” position.
For continuous operation, press the
front of the power switch to lock it.
To stop the tool, press the rear of the
power switch, then slide it toward the
“OFF” position.
When operating the tool by pulling the
trigger, there may be a momentary lag
before rotation starts. This does not
signal a malfunction.
• This lag occurs as the tool’s circuitry
starts up when the trigger is pulled
for the first time after installing a new
battery pack or after the tool has not
been used for at least 1 minute (or at
least 5 minutes when the LED is on).
Rotation will start without any lag
during second and subsequent op-
erations.
WARNING:
• It should never be necessary to
force the tool. The weight of the
tool applies adequate pressure.
Forcing and excessive pressure
could cause dangerous grinding
disc breakage.
• ALWAYS replace grinding disc if
tool is dropped while grinding.
• NEVER bang or hit grinding disc.
• Avoid bouncing and snagging the
grinding disc, especially when work-
ing corners, sharp edges etc. This
can cause loss of control and kick-
back.
CAUTION:
• After operation, always switch off
the tool and wait until the wheel has
come to a complete stop before
putting the tool down.
Visual inspection and workout
test on disc
1. Always make sure that the disc has
no cracks before use.
2. Always give workout test on the
blade as follows.
3. Always make sure the disc is firmly
fixed.
Work out time
Brand new disc more than 3 min.
Before use on
current disc more than 1 min.
Grinding operation
ALWAYS hold the tool firmly with one
hand on grip and the other on the side
handle. Turn on the tool on and then ap-
ply the wheel or disc to the workpiece.
In general, keep the edge of the wheel
or grinding disc at an angle of about
1
AB

- 16 -
15º-30º to the workpiece surface.
When using a new grinding disc, do not
work the grinder in the B direction or it will
cut into the workpiece. Once the edge of
the grinding disc has been rounded off by
use, the grinding disc may be worked in
both A and B direction.
Using a cut-off disc guard
(EY9X213E) (Available as an
accessory, not included)
WARNING:
• When using an abrasive cut-off
disc, be sure to use only the cut-off
disc guard designed for this use
with cut-off disc.
• NEVER use cut-off disc for grinding.
• Do not jam the Disc or apply ex-
cessive pressure. Do not attempt
to make an excessive depth of cut.
Overstressing the cut-off disc in-
creases the loading and suscepti-
bility to twisting or binding of the
cut-off disc in the cut and the pos-
sibility of kickback, cut-off disc
breakage and overheating of the
motor may occur.
• Do not start when disc is in the
workpiece. To do so causes the
cut-off disc binding or kickback. Let
the cut-off disc reach full speed and
then carefully cut the workpiece.
• During cutting operations, never
change the angle of the disc. Plac-
ing side pressure on the cut-off
disc (as in grinding) will cause the
disc to crack and break, causing
serious personal injury.
CAUTION:
• To prevent excessive temperature
increase of the tool surface, do not
operate the tool continuously us-
ing two or more battery packs. The
tool needs cool-off time before
switching to another pack.
• Do not close up ventilation slots on
the sides of the body during operation.
Otherwise, the machine function is
adversely affected to cause a failure.
• Do NOT strain the tool (motor). This
may cause damage to the unit.
• Use the tool in such a way as to
prevent the air from the ventilation
slots from blowing directly onto
your skin. Otherwise, you may get
burned.
Indicator lamp for On lock
warning lamp function
The grinder will not start when the
switch is at the ON position (switch
lever at ON), even when the battery
pack is inserted. The warning lamp
will flash at this time to indicate that
the on lock start prevention function
has operated.
Press the switch to the OFF position
(switch lever at OFF) and then press
it back to the ON position (switch
lever at ON) to start the grinder.
ON OFF
Make sure the side.

- 17 -
Overheat warning lamp
Off
(normal
operation)
Flashing: Overheat
Indicates operation has
been halted due to battery
overheatin
g
.
To protect the motor or battery, be
sure to note the following when car-
rying out this operation.
• If the motor or battery becomes hot,
the protection function will be acti-
vated and the motor or battery will
stop operating. The overheat warning
lamp on the control panel illuminates
or flashes when this feature is active.
• If the overheating protection feature
activates, allow the tool to cool tho-
roughly (at least 30 minutes). The
tool is ready for use when the over-
heat warning lamp goes out.
• Avoid using the tool in a way that
causes the overheating protection
feature to activate repeatedly.
• If the tool is operated continuously
under high-load conditions or if it is
used in hot-temperature conditions
(such as during summer), the over-
heating protection feature may acti-
vate frequently.
• If the tool is used in cold-temperature
conditions (such as during winter) or
if it is frequently stopped during use,
the overheating protection feature
may not activate.
• The performance of the EY9L42 de-
teriorates significantly at and below
10°C due to work conditions and
other factors.
• The ambient temperature range is be-
tween 0°C (32°F) and 40°C (104°F). If
the battery pack is used when the bat-
tery temperature is below 0°C (32°F),
the tool may fail to function properly.
• When charging a cool battery pack
(below 0°C (32°F)) in a warm place,
leave the battery pack at the place
and wait for more than one hour to
warm up the battery to the level of
the ambient temperature.
Battery low warning lamp
Excessive (complete) discharging of li-
thium ion batteries shortens their ser-
vice life dramatically. The tool includes
a battery protection feature designed to
prevent excessive discharging of the
battery pack.
• The battery protection feature acti-
vates immediately before the battery
loses its charge, causing the battery
low warning lamp to flash.
• If you notice the battery low warning
lamp flashing, charge the battery
pack immediately.
• If it is started with too little battery
power remaining, the tool may stop
operating without the battery low
warning lamp flashing first. This in-
dicates that there is too little battery
power remaining to use the tool, and
the battery pack should be charged
before further use.
• If the tool is subject to a sudden load
during use that causes the motor to
lock up, the overdischarge preven-
tion sensor may be triggered, and
the battery low warning lamp may
flash. The lamp will stop flashing
once you address the cause of the
motor’s locking up and cycle the
trigger.
Off
(normal
operation)
Flashing
(No charge)
Battery protection
feature active

- 18 -
- Accidental re-start preventive function
- Even if the battery pack is inserted
on the tool with the power switch in
the “ON” position, the tool does not
start. At this time, the lamp flickers
slowly and this shows that the ac-
cidental re-start preventive function
is at work.
- To start the tool, first slide the power
switch toward the “OFF” position
and then slide it toward the “ON”
position.
[Battery Pack]
For Appropriate Use of
Battery pack
Li-ion Battery pack
• For optimum battery life, store the
Li-ion battery pack following use
without charging it.
• When charging the battery pack, con-
firm that the terminals on the battery
charger are free of foreign substances
such as dust and water etc. Clean the
terminals before charging the battery
pack if any foreign substances are
found on the terminals.
The life of the battery pack terminals
may be affected by foreign sub-
stances such as dust and water etc.
during operation.
• When battery pack is not in use,
keep it away from other metal ob-
jects 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 to-
gether may cause sparks, burns or a
fire.
• When operating the battery pack,
make sure the work place is well
ventilated.
• When the battery pack is removed
from the main body of the tool, re-
place the battery pack cover imme-
diately in order to prevent dust or dirt
from contaminating the battery ter-
minals and causing a short circuit.
Battery Pack Life
The rechargeable batteries have a li-
mited life. If the operation time be-
comes extremely short after recharg-
ing, replace the battery pack with a
new one.
Battery Recycling
ATTENTION:
For environmental protection and
recycling of materials, be sure that
it is disposed of at an officially as-
signed location, if there is one in
your country.
[Battery Charger]
Charging
Cautions
• If the temperature of the battery pack
falls approximately below −10°C
(14°F), charging will automatically
stop to prevent degradation of the
battery.
• The ambient temperature range is
between 0°C (32°F) and 40°C (104°F).
If the battery pack is used when the
battery temperature is below 0°C (32°F),
the tool may fail to function properly.
• When charging a cool battery pack
(below 0°C (32°F)) in a warm place,
leave the battery pack at the place and
wait for more than one hour to warm
up the battery to the level of the am-
bient temperature.

- 19 -
• Cool down the charger when charging
more than two battery packs consecu-
tively.
• During charging, the charger may
become slightly warm. This is normal.
Do NOT charge the battery for a long
period.
To prevent the risk of fire or damage
to the battery charger.
• Do not use power source from an
engine generator.
• Do not cover vent holes on the
charger and the battery pack.
• Unplug the charger when not in use.
Li-ion Battery Pack
NOTE:
Your battery pack is not fully
charged at the time of purchase.
Be sure to charge the battery be-
fore use.
Battery charger
1. Plug the charger into the AC outlet.
2. Insert the battery pack firmly into
the charger.
1. Line up the alignment marks and
place the battery onto the dock on
the charger.
2. Slide forward in the direction of the
arrow.
3. During charging, the charging lamp
will be lit.
When charging is completed, an
internal electronic switch will auto-
matically be triggered to prevent
overcharging.
• Charging will not start if the battery
pack is warm (for example, imme-
diately after heavy-duty operation).
The orange standby lamp will be
flashing until the battery cools down.
Charging will then begin automati-
cally.
4. The charge lamp (green) will flash
slowly once the battery is approx-
imately 80% charged.
5. When charging is completed, the
charging lamp in green color will turn
off.
6. If the temperature of the battery pack
is 0°C or less, charging takes longer
to fully charge the battery pack than
the standard charging time.
Even when the battery is fully charged,
it will have approximately 50% of the
power of a fully charged battery at
normal operating temperature.
7. Consult an authorized dealer if the
charging lamp (green) does not
turn off.
8. If a fully charged battery pack is
inserted into the charger again, the
charging lamp lights up. After sev-
eral minutes, the charging lamp in
green color will turn off.
9. Remove the battery pack while
thebattery pack release button is
held up.
A
lignment
marks
Battery pack
release button

- 20 -
LAMP INDICATIONS
Charging is completed. (Full charge.)
Battery is approximately 80% charged.
Now charging.
Charger is plugged into the AC outlet. Ready to charge.
Charging Status Lamp.
Left: green Right: orange will be displayed.
Battery pack is cool.
The battery pack is being charged slowly to reduce the load on the battery.
Battery pack is warm.
Charging will begin when temperature of battery pack drops. If the temperature of the
battery pack is -10° or less, the charging status lamp (orange) will also start flashing .
Charging will begin when the temperature of the battery pack goes up"
Charging is not possible. Clogged with dust or malfunction of the bat-
tery pack.
Turn off Lit Flashing
(Green) (Orange)

- 21 -
Information for Users on Collection and Disposal of Old
Equipment and used Batteries
These symbols on the products, packaging, and/or accompanying
documents mean that used electrical and electronic products and
batteries should not be mixed with general household waste.
For proper treatment, recovery and recycling of old products and used
batteries, please take them to applicable collection points, in accordance
with your national legislation and the Directives 2002/96/EC and
2006/66/EC.
By disposing of these products and batteries correctly, you will help to
save valuable resources and prevent any potential negative effects on
human health and the environment which could otherwise arise from
inappropriate waste handling.
For more information about collection and recycling of old products and
batteries, please contact your local municipality, your waste disposal
service or the point of sale where you purchased the items.
Penalties may be applicable for incorrect disposal of this waste, in
accordance with national legislation.
For business users in the European Union
If you wish to discard electrical and electronic equipment, please contact your
dealer or supplier for further information.
[Information on Disposal in other Countries outside the Euro-
pean Union]
These symbols are only valid in the European Union. If you wish to discard these
items, please contact your local authorities or dealer and ask for the correct method
of disposal.
Note for the battery symbol (bottom two symbol examples):
This symbol might be used in combination with a chemical symbol. In this case it
complies with the requirement set by the Directive for the chemical involved.

- 22 -
Replacing carbon brushes
Keep the carbon brushes clean and
free to slip in the holders. When it is
less than 5 mm shorter both carbon
brushes should be replaced at the
same time. Use only identical carbon
brushes.
Insert the top end of slotted bit screw-
driver into the notch in the tool and
remove the brush cap cover by lifting it
up.
1. Brush cap
cover
2. Brush cap
Use a screwdriver to remove the caps.
Take out the worn carbon brushes, in-
sert the new ones and secure the brush
caps.
Reinstall the brush cap cover on the
tool.
To maintain product SAFETY and RE-
LIABILITY, repairs, any other main-
tenance or adjustment should be per-
formed by Panasonic Authorized or
Factory Service Centers, always using
Panasonic replacement parts.
V. MAINTENANCE
• Use only a dry, soft cloth for wiping
the unit. Do not use a damp cloth,
thinner, benzine, or other volatile
solvents for cleaning.
• In the event that the inside of the
tool or battery pack is exposed to
water, drain and allow to dry as
soon as possible. Carefully re-
move any dust or iron filings that
collect inside the tool. If you expe-
rience any problems operating the
tool, consult with a repair shop.
VI. ACCESSORIES
CAUTION:
• The use of any accessories not
specified in this manual may result
in fire, electric shock, or personal
injury. Use recommended acces-
sories only.
• Your tool is supplied with a guard for
use with a grinding disc. A cut-off
disc can also be used with a cut-off
disc guard. If you decide to use your
Panasonic grinder with approved
accessories which you purchase
from your Panasonic distributor or
factory service center, be sure to
obtain and use all necessary fasten-
ers and guards as recommended in
this manual. Your failure to do so
could result in personal injury to you
and others.
Grinding Disc
• EY9X202E
Wheel diameter 115 mm x 6 mm x
22 mm
Grinding Disc Guard
• EY9X212E
Cut-off Disc
• EY9X203E
Wheel diameter 115 mm x 2.5 mm x
22 mm
Cut-off Disc Guard (For cut-off disc)
• EY9X213E
Disc Flange
• EY9X221E
Clamp Nut
• EY9X231E
2
1
Carbon brush

- 23 -
VII. SPECIFICATIONS
MAIN UNIT
Mountin
g
wheel diameter 115 mm
Mountin
g
wheel innerhole diameter 22 mm
S
p
indle thread size M14
Motor volta
g
e 14.4 V DC
Rated s
p
eed 9500 min-1
(
r
p
m
)
Wei
g
ht
(
with batter
y
p
ack
)
2.2 k
g
Overall len
g
th 361 mm
Noise
,
Vibration See the included sheet
BATTERY PACK
Model EY9L41 EY9L42 EY9L44 EY9L45
Storage battery Li-ion Battery
Battery voltage 14.4 V DC (3.6 V x 4 cells) 14.4 V DC (3.6 V x 8 cells)
BATTERY CHARGER
Model EY0L81
Electrical
Rating See the rating plate on the bottom of the charger
Weight 0.93 kg
Charging time
EY9L41 EY9L42 EY9L44 EY9L45
Usable: 45 min Usable: 30 min Usable: 50 min Usable: 65 min
Full: 60 min Full: 35 min Full: 65 min Full: 80 min
Model EY0L82
Electrical
Rating See the rating plate on the bottom of the charger
Wei
g
ht 0.93 k
g
Charging time
EY9L41 EY9L42 EY9L44 EY9L45
Usable: 35 min Usable: 30 min Usable: 40 min Usable: 50 min
Full: 50 min Full: 35 min Full: 55 min Full: 60 min
NOTE: This chart may include models that are not available in your area.
Please refer to the latest general catalogue.
NOTE: For the dealer name and address, please see the included warranty card.

- 24 -
VIII. ELECTRICAL
PLUG INFOR-
MATION
FOR YOUR SAFETY PLEASE READ
THE FOLLOWING TEXT CAREFULLY
This appliance is supplied with a moulded
three pin mains plug for your safety and
convenience.
A 5 amp fuse is fitted in this plug.
Should the fuse need to be replaced please
ensure that the replacement fuse has a rat-
ing of 5 amp and that it is approved by ASTA
or BSI to BS1362.
Check for the ASTA mark or the BSI mark
on the body of the fuse.
If the plug contains a removable fuse cover
you must ensure that it is refitted when the
fuse is replaced.
If you lose the fuse cover the plug must not
be used until a replacement cover is ob-
tained.
A replacement fuse cover can be purchased
from your local Panasonic Dealer.
IF THE FITTED MOULDED PLUG IS UN-
SUITABLE FOR THE SOCKET OUTLET IN
YOUR HOME THEN THE FUSE SHOULD
BE REMOVED AND THE PLUG CUT OFF
AND DISPOSED OF SAFELY.
THERE IS A DANGER OF SEVERE ELEC-
TRICAL SHOCK IF THE CUT OFF PLUG IS
INSERTED INTO ANY 13 AMP SOCKET.
If a new plug is to be fitted please observe
the wiring code as shown below.
If in any doubt please consult a qualified
electrician.
IMPORTANT:
The wires in this mains lead are
coloured in accordance with the
following code:
Blue: Neutral
Brown: Live
As the colours of the wire in the mains lead
of this appliance may not correspond with
the coloured markings identifying the ter-
minals in your plug, proceed as follows.
The wire which is coloured BLUE must be
connected to the terminal in the plug which
is marked with the letter N or coloured
BLACK.
The wire which is coloured BROWN must be
connected to the terminal in the plug which is
marked with the letter L or coloured RED.
Under no circumstances should either of
these wires be connected to the earth ter-
minal of the three pin plug, marked with the
letter E or the Earth Symbol .
How to replace the fuse: Open the fuse
compartment with a screwdriver and re-
place the fuse and fuse cover if it is re-
movable.
This apparatus was produced to BS800.
ONLY FOR U. K.
Fuse Cover