Panasonic EW-DJ4B User manual

Operating Instructions
(Household use) Rechargeable Oral Irrigator
Model No. EW-DJ4B
LEVEL
EW-DJ4B EU0713.indb 1 2022/7/14 下午1:40

English
English 3
Deutsch 23
Français 43
Italiano 63
Español 83
Nederlands 103
Português 123
Svenska 143
Dansk 163
Norsk 183
Suomi 203
Polski 223
Česky 245
Slovensky 265
Magyar 285
Română 305
Türkçe 325
2
EW-DJ4B EU0713.indb 2 2022/7/14 下午1:40

English
Thank you for purchasing this Panasonic product.
Beforeoperatingthisunit,pleasereadtheseinstructionscompletelyandsavethemforfutureuse.
Contents
Operating Instructions
(Household use) Rechargeable Oral Irrigator
Model No. EW-DJ4B
Safetyprecautions...........................6
Intended use.............................................9
Parts identication ..................................10
Charging................................................. 11
How to use..............................................12
Points of care..........................................14
After use .................................................15
Frequently asked questions....................17
Troubleshooting......................................18
Battery life...............................................20
Removing the built-in rechargeable
battery.....................................................20
Specications .........................................21
Changing the nozzle (Sold separately)...21
3
EW-DJ4B EU0713.indb 3 2022/7/14 下午1:40

English
WARNING
• Do not immerse the AC adaptor in water or clean it with
water.
Doing so may cause electric shock or re due to a short
circuit.
• Always unplug the adaptor from a household outlet when
cleaning the AC adaptor.
Failure to do so may cause electric shock or injury.
• The supply cord cannot be replaced. If the cord is
damaged, the AC adaptor should be scrapped.
Failure to do so may cause an accident or injury.
• Oral irrigators can be used by children aged from 8
years and above and persons with reduced physical,
sensory or mental capabilities or lack of experience and
knowledge under supervision.
4
EW-DJ4B EU0713.indb 4 2022/7/14 下午1:40

English
•Oral irrigators shall be used only with cold or warm water,
or specic solutions as dened in the manufacturer’s
instructions.
• Children shall not play with the appliance.
• Do not use anything other than the supplied AC adaptor
for any purpose. Also, do not use any other product with
the AC adaptor. (See page 10.)
Doing so may cause burn or re due to a short circuit.
• The following symbol indicates that a specic detachable
power supply unit is required for connecting the electrical
appliance to the supply mains. The type reference of
power supply unit is marked near the symbol.
5
EW-DJ4B EU0713.indb 5 2022/7/14 下午1:40

English
Safetyprecautions
To reduce the risk of injury, loss of life, electric shock,
re, and damage to property, always observe the
following safety precautions.
Explanationofsymbols
The following symbols are used to classify and describe
the level of hazard, injury, and property damage caused
when the denotation is disregarded and improper use is
performed.
DANGER Denotes a potential hazard
that will result in serious
injury or death.
WARNING
Denotes a potential hazard
that could result in serious
injury or death.
CAUTION Denotes a hazard that
could result in minor injury
or property damage.
The following symbols are used to classify and describe
types of instructions to be observed.
This symbol is used to alert users to a specic
operating procedure that must not be performed.
This symbol is used to alert users to a specic
operating procedure that must be followed in
order to operate the unit safely.
WARNING
Preventing accidents
Do not store within the reach of children or
infants.Donotletthemuseit.
- Doing so may cause an accident or injury due
to accidental ingestion of removable parts.
Powersupply
Do not connect or disconnect the adaptor or
the appliance plug to a household outlet with
awethand.
- Doing so may cause electric shock or injury.
Do not place the AC adaptor over or near
waterlledsinkorbathtub.
Do not use when the AC adaptor is damaged
orwhenthettingintothehouseholdoutlet
isloose.
Donotdamage,modify,forcefullybend,pull,
twist,orbundlethecord.Also,donotplace
anythingheavyonorpinchthecord.
- Doing so may cause electric shock or re due
to a short circuit.
Donotuseinawayexceedingtheratingof
thehouseholdoutletorthewiring.
- Exceeding the rating by connecting too many
power plugs to one household outlet may
cause re due to overheating.
6
EW-DJ4B EU0713.indb 6 2022/7/14 下午1:40

English
WARNING
Alwaysensuretheapplianceisoperated
on an electric power source matched to the
ratedvoltageindicatedontheACadaptor.
Fullyinserttheadaptor.
-
Failure to do so may cause re or electric shock.
Incaseofanabnormalityormalfunction
Immediatelystopusingandremovethe
ACadaptorifthereisanabnormalityor
malfunction.
- Failure to do so may cause re, electric shock
or injury.
<Abnormalityormalfunctioncases>
• The main unit, adaptor or cord is deformed
orabnormallyhot.
• The main unit, adaptor or cord smells of
burning.
•Thereisabnormalsoundduringuseor
chargingofthemainunit.
- Immediately request inspection or repair at an
authorized service centre.
This product
Thisproducthasabuilt-inrechargeable
battery.Donotthrowintore,applyheat,or
charge, use, or leave in a high temperature
environment.
- Doing so may cause overheating, ignition, or
explosion of the built-in rechargeable battery.
Donotmodifyorrepair.
- Doing so may cause re, electric shock, or
injury.
→Contact an authorized service centre for repair
(battery change, etc.).
Neverdisassembleexceptwhendisposingof
theproduct.
- Doing so may cause re, electric shock, or injury.
Cleaning
Regularlycleanthepowerplugandthe
appliance plug to prevent dust from
accumulating.
- Failure to do so may cause re due to
insulation failure caused by humidity.
Disconnect the adaptor and wipe with a dry
cloth.
CAUTION
Preventing damage to teeth and gums
Peoplewhoareunabletooperateshouldnot
usethisappliance.
People with weak oral senses should not use
thisappliance.
-
Doing so may cause injury or damage to teeth and
gums.
7
EW-DJ4B EU0713.indb 7 2022/7/14 下午1:40

English
CAUTION
Peoplewhomayhaveperiodontaldisease,
haveteethbeingtreated,orconcernedabout
symptomswithintheirmouthshouldconsult
adentistbeforeuse.
- Failure to do so may cause injury or damage to
teeth and gums.
This product
Never use for a purpose other than oral
cleaning.
- Doing so may cause an accident or injury when
the stream of water is pointed toward the eyes,
nose, ears, tongue, or throat.
Donotllthetankwithwaterwarmerthan
40°C.
- Doing so may cause burns.
Donotsharethenozzlewithyourfamilyor
otherpeople.
- Doing so may cause infection or inammation.
Note the following precautions
Donotallowmetalobjectsortrashtoadhere
tothepowerplugortheapplianceplug.
- Doing so may cause electric shock or re due
to a short circuit.
Donotdroporsubjecttoshock.
- Doing so may cause injury.
Donotputyourngers
on the nozzle storage unit
or hold the portion within
the dotted line frame when
storing.
- Doing so may get your
ngers/hand pinched.
Nozzle
storage unit
Do not wrap the cord around the adaptor
whenstoring.
- Doing so may cause the wire in the cord to
break with the load, and may cause re due to
a short circuit.
Disconnect the adaptor from the household
outletwhennotcharging.
- Failure to do so may cause electric shock or
re due to electrical leakage resulting from
insulation deterioration.
Disconnect the adaptor or the appliance plug
byholdingontoitinsteadofthecord.
- Failure to do so may cause electric shock or
re due to a short circuit.
Afteruse,cleanthemainbody,watertankand
thenozzleanddrythem.(Seepages15to
17.)
- Failure to do so may cause damage to your
health due to propagation of mold and bacteria.
8
EW-DJ4B EU0713.indb 8 2022/7/14 下午1:40

English
Ifthebatteryuidleaksoutandcomesincontact
withtheeyes,donotrubtheeyes,andthoroughly
rinsewithcleanwater,suchastapwater.
- Failure to do so may cause eye injury.
Consult a physician immediately.
CAUTION
Ifthebatteryuidleaksoutandcomesincontact
withtheskinorclothes,rinseo󰀨withcleanwater,
suchastapwater.
- Failure to do so may cause inammation.
Intended use
• Please use the appliance together with toothbrush. It
is hard to remove tartar or dental calculus attached to
the tooth surface just by a water jet, so a toothbrush is
required to brush the teeth. We recommend rinsing the
inside of your mouth with the water jet after brushing
your teeth.
• When you rst begin using the oral irrigator, you may
experience slight bleeding of the gums even though
your gums may be healthy. This is because your gums
are receiving stimulation by the oral irrigator for the
rst time. The bleeding should stop after one or two
weeks of use. Bleeding that persists for more than two
weeks may be indication of an abnormal condition of
your gums, such as periodontal disease. In this case,
stop using the oral irrigator and consult your dentist.
• Do not put salt, mouthwash or other chemicals into the
water tank. Doing so may cause malfunction.
Handlingoftheremovedbatterywhendisposing
DANGER
Therechargeablebatteryisexclusivelyforuse
withthisappliance.Donotusethebatterywith
otherproducts.
Donotchargethebatteryafterithasbeen
removedfromtheproduct.
Donotthrowintoreorapplyheat.
Donothit,disassemble,modify,orpuncture
withanail.
Do not let the positive and negative terminals
ofthebatterygetincontactwitheachother
throughmetallicobjects.
Donotcarryorstorethebatterytogether
withmetallicjewellerysuchasnecklacesand
hairpins.
Donotuseorleavethebatterywhereitwillbe
exposed to high temperatures, such as under
directsunlightornearothersourcesofheat.
Neverpeelo󰀨thetube.
- Doing so may cause overheating, ignition, or
explosion.
WARNING
Afterremovingtherechargeablebattery,donot
keepitwithinreachofchildrenandinfants.
- The battery will harm the body if accidentally
swallowed.
If this happens, consult a physician immediately.
9
EW-DJ4B EU0713.indb 9 2022/7/14 下午1:40

English
AMain unit
aMain body
bPower switch
cLevel switch
dWater pressure level
LED indicator (1~4
levels)
eLow battery / Charge
status indicator (red)
fCharging socket
gNozzle release button
hCharging socket cover
iNozzle storage unit
jWater tank
kWater tank cap
lSuction hose
mFilter
nBottom cover
BACadaptor(RE7-87)
oAdaptor
pPower plug
qCord
rAppliance plug
C Ultrasonicwaterjet
nozzle(×1)
•
The nozzle is a consumable.
sNozzle insertion port
Accessory
D
Pouch
A
c
b
jC
D
s
k
h
n
B
r
p
q
o
f
g

l
m
i
a
Front Back
e
d
LEVEL
Partsidentication
• Do not dry the main unit with a dryer or a fan heater.
Doing so may cause malfunction or deformation of the
parts.
• Store the appliance in a place with low humidity after
use. Leaving the appliance in a bathroom may cause
malfunction.
• Wrap the appliance in a towel or the like when carrying
it with you. Otherwise, the water may seep out, thus
wetting surrounding objects.
• Charge the appliance correctly according to these
Operating Instructions. (See pages 11 and 12
"Charging".)
• This appliance contains battery that is only replaceable
by skilled persons. Please contact an authorized
service centre for the details of repair.
10
EW-DJ4B EU0713.indb 10 2022/7/14 下午1:40

English
Charging
• Wipe the charging socket dry before use if there are
water drops in it.
1ConnecttheACadaptor.
a
Open the charging socket cover, and then
insert the appliance plug into the charging
socket on the main body.
b
Insert the adaptor into a household outlet.
❶
❷
Note
There may be moisture inside the main unit (water tank
and suction hose) left from the distilled water used for
product testing.
Aboutthechargingreminder
function
• During use, charging is required
when the low battery / charge
status indicator (red) ashes
(once a second).
• After turning o󰀨 the power
switch " " when the battery has
little remaining charge, the low
battery indicator will light o󰀨 after
5 seconds.
Low battery
(once a
second)
（Flashing）
Indicatordisplayduringcharging
Charging
in
progress
Charging
complete
Charging
abnormal
(Flashing in red
twice a second)
（Lights on Lights o󰀨 ）（Flashing ）
How to check if charging is completed
• After charging is completed, if you disconnect
the power plug and then plug in the power plug
again to charge, (the low battery / charge
status indicator) lights on and then lights o󰀨 after
about 5 seconds.
11
EW-DJ4B EU0713.indb 11 2022/7/14 下午1:40

English
2Forsafetyandenergysaving,
disconnect the power plug after
chargingiscompleted.
• Disconnect the appliance plug from the charging
socket, and then close the charging socket cover.
• To keep charging the battery will not a󰀨ect
battery performance.
Operating time after a full charge
approx.10minutes*
(When the water pressure level is set to 4)
* It varies with the ambient temperature and usage
conditions.
• Charging is completed after approx. 1 hour.
(The charging time may vary with the remaining
battery capacity.)
Notes
• The charging time may di󰀨er when the appliance is
used for the rst time, or if it has not been used for
more than 6 months.
In addition, (the charge status indicator) may not
light on in the rst several minutes of charging, but it
will light on as the charging proceeds.
• The recommended ambient temperature for charging
is 10 °C - 35 °C. It may take longer to charge, or
will ash rapidly and the battery may fail to charge
properly in extremely high or low temperatures.
How to use
1Pulloutthemainbodywhile
rotating it, and then install the
nozzle.
a
Open the water tank cap.
• If it is closed, the main body
is hard to be pulled out.
b
Pull the main body to the "
" mark.
• Be noted that the nozzle
may be ejected from the
nozzle storage unit.
c
Install the nozzle while
holding the main body.
• Install it into place until it
clicks.
❸
❶
❷
click
2Fillthewatertankwithwater.
a
Add water while keeping the
main unit level.
• Do not ll beyond the
full-water position.
b
Close the water tank cap
securely.
• Always use new tap water or
lukewarm water.
• If you feel the water is cold,
use lukewarm water with a
temperature of 40 °C or less.
Full-water position
12
EW-DJ4B EU0713.indb 12 2022/7/14 下午1:40

English
If the water tank cap
comeso󰀨
• Align the groove of the
water tank cap with the
protrusion of the water
supply port, and press the
water tank cap into place
until it clicks.
Protrusion

Groove
3Press the level switch to
selectyourdesiredwater
pressurelevel.
Press
LEVEL
• After you press the level
switch, the last used water
pressure level is automatically
selected. Then each time
you press the level switch,
the water pressure level is
switched once in the following
order: 1 (weak) → 2 → 3 → 4
(strong) → 1...
Weak
(water pressure level 1)
Strong
(water pressure level 4)
Aboutthewaterpressurelevelmemory
function
Thelastselectedwaterpressurelevelwillbe
remembered,fromwhichtheappliancewill
startnexttime.
• When the appliance has not been used for a long
time or when the battery is used up, the water
pressure level will return to 1.
4Cleaninsideyourmouthwith
thewaterjet.
a
Place the nozzle in your
mouth.
b
Close your mouth gently.
c
Turn on the power switch " ".
•
You can switch the water
pressure level by pressing the
level switch, even while using
the appliance.
• If the main unit is tilted too
much, the water does not
come out from the nozzle.

Afullylledwatertankprovidesapproximately
40secondsofuse.
(When the water pressure level is set to 4)
Keepyourface
overthebasin.
Place the main
unitupright.
Point 2
Point 1
※It can also be used in a bath.
13
EW-DJ4B EU0713.indb 13 2022/7/14 下午1:40

English
Notes
• The appliance does not work when plugged into a
household outlet.
• For the rst use, turn on the power switch " " to jet
water so that you can check the water pressure level.
(Please start using the appliance from water pressure
level 1.)
• The appliance may not operate in an ambient
temperature approximately 5 °C or lower.
• Do not push the tip of the nozzle too hard against the
teeth or gums.
• If you feel that the irritation is strong, turn o󰀨 the power
switch " " and use the appliance from water pressure
level 1.
• Do not turn on the power switch " " when the water
tank is empty unless you are drying the moisture inside
the main unit. (Doing so may cause malfunction.)
Points of care
• With the ultrasonic water jet nozzle, clean every nook
and cranny of areas that are hard to reach with a
toothbrush.
• Change the way you use and move the unit depending
on the purpose and the area you want to clean.
• Please rinse areas with sensitive gums with a weak
water jet.
■How to use
Interdental cleaning
• Direct the water jet onto the space
between the teeth.
• Direct from the front and rear sides
of the teeth.
Periodontal pocket cleaning
• Aim the water jet at the space
between teeth and gums.
• Slowly shift the water jet along the
gums.
• Clean the front and back of the teeth
and behind the molars as well.
14
EW-DJ4B EU0713.indb 14 2022/7/14 下午1:40

English
Gums care
• Stimulate the gums.
Fororthodonticbracketarea
• Direct the water jet around
orthodontic brackets and bridges.
Powerful water jets are used to thoroughly rinse each
corner clean by removing tartar or dental calculus from
"interdental gaps" and "periodontal pockets" that are
hard to reach with a toothbrush.
After use
Pleasecleantheapplianceaftereachuse.
1To prevent the water from
splashingabout,turno󰀨the
power switch
" " while keeping
thenozzleinyourmouth.
press
Power
switch
2Emptythewatertankanddrain
the remaining water in the main
unit,forthesakeofhygiene.
❶
Drainage
exit
❷
a
Open the water tank cap, and
pour out the remaining water.
• Be sure to pour out the
remaining water after each
use.
b
Turn on the power switch " " to
drain the remaining water in the
main unit.
c
Turn o󰀨 the power switch " "
when no more water comes out.
3Removethebottomcover,
and
washthemainbody(asawhole)
andinsideofthetank.
a
Remove the nozzle while
pressing the nozzle release
button.
Nozzle
release
button
15
EW-DJ4B EU0713.indb 15 2022/7/14 下午1:40

English
b
Remove the water tank from the
main unit, and then take out the
bottom cover.
Howtoremovethebottom
cover
a
Rotate the bottom cover until
the " " mark on the water tank
is aligned with the " " mark on
the bottom cover.
b
Remove the bottom cover.
c
Clean it with water.
• When draining, do not hit the
appliance on the washbasin or the
like.
ⓑⓐ
4Storeitafteritisdry.
a
Wipe away the water with a
towel or the like and dry them in
a well-ventilated shade.
b
Store the nozzle and the main
unit.
・
Attach the bottom cover onto
the water tank.
・
Do not get your ngers pinched
in on the nozzle storage
unit.
Nozzle storage unit
Gently rotate the main
unit and push it into
the water tank.
(Until the protrusion fits
into the groove.)
Howtoattachthebottom
cover
a
Align the " " mark on the
water tank with the " " mark
on the bottom cover, and
attach the bottom cover.
b
Rotate the bottom cover until
the " " mark on the bottom
cover is aligned with the "
▲
"
mark on the water tank.
ⓐ
ⓑ
Iftherubberringofthebottom
covercomeso󰀨
・
Keep the convex part of the
rubber ring facing outward, and
install the rubber ring onto the
bottom cover.
Convex
part
Notes
• Do not wash with lukewarm water exceeding 50 °C.
• Use neutral kitchen detergent and rinse well with
water to ensure no detergent remains after cleaning.
• Never use thinners, benzine, or alcohol.
(Doing so may cause malfunction, cracking or
discolouration of the parts.)
• The water tank and the bottom cover can be washed
in a dish washer.
16
EW-DJ4B EU0713.indb 16 2022/7/14 下午1:40

English
Whenthewaterjetispoor
Remove the dirt from the lter (the tip of the suction
hose).
Filter
Rub it gently with a soft brush.



Scrub it clean
gently with a
soft brush.
Filter
Brush
Suction
hose
Frequentlyaskedquestions
Question Answer
Battery
Will the battery
be exhausted
after a long
period of disuse?
▶
Please charge it once every 6
months if you have not used
it for over 6 months as the
battery may deteriorate.
Can the battery
be charged
before every
use?
▶
This appliance uses a Lithium-
ion battery. Therefore, the
service life of the battery will
not be a󰀨ected even if it is
charged after each use.
17
EW-DJ4B EU0713.indb 17 2022/7/14 下午1:40

English
Troubleshooting
Problem Possiblecause Action
While charging
The low battery /
charge status
indicator does
not light on.
▶
The appliance was just
purchased or it has not been
used for a while.
▶Keep charging, and the indicator will light on after
a while. (See page 12.)
▶
The main unit is not properly
plugged in the charging
socket.
▶
Check to see that the appliance plug is in full
contact with the charging socket, and that the low
battery / charge status indicator is on. (See page
11.)
The charge status
indicator ashes
rapidly (twice a
second).
▶
The ambient temperature is
too low or too high during
charging.
▶
Please charge within the recommended
temperature range of 10 °C to 35 °C.
If the indicator ashes even when you charge
it within the recommended temperature range,
contact your dealer or Service Centre for repair.
The appliance can
be used for just
several minutes
even after a full
charge.
▶
The main unit is not properly
plugged in the charging
socket.
▶
Check to see that the appliance plug is in full
contact with the charging socket, and that the low
battery / charge status indicator is on. (See page
11.)
▶
The battery has reached
the end of its life (approx. 3
years).
▶Have the battery replaced by your dealer or an
authorized service centre.
The appliance
does not work, but
does not ash
as expected.
▶
18
EW-DJ4B EU0713.indb 18 2022/7/14 下午1:40

English
Problem Possiblecause Action
While using
The appliance
does not operate.
▶
The battery has reached
the end of its life (approx.3
years).
▶Have the battery replaced by your dealer or an
authorized service centre.
▶The appliance is used with
approximately 5 °C or lower. ▶Use the appliance in an ambient temperature
approximately 5 °C or higher.
The water jet is
poor.
▶The nozzle is clogged. The
outlet of nozzle is squashed. ▶Replace the nozzle with a new one.
▶The lter is clogged. ▶Remove the dirt from the lter.
(See page 17.)
No water comes
out.
▶The main unit is tilted too
much. ▶
Please use the appliance
with the main unit upright.
(See page 13.)
▶It may take some time to suck
up water. ▶
Put water into the nozzle
port a, install the nozzle,
and turn on the power
switch. ab
The nozzle is hard
to install. ▶ ▶ ▶ ▶ ▶ ▶ Apply water to the nozzle
insertion port b.
Water leaks from
the bottom cover. ▶The rubber ring of the bottom
cover is not installed properly. ▶Please install it properly.
(See page 16.)
If the problems still cannot be solved, contact the store where you purchased the unit or a service centre authorized
by Panasonic for repair.
19
EW-DJ4B EU0713.indb 19 2022/7/14 下午1:40

English
①
②
⑦
③
⑥
⑤
④
Top
Bottom
Removingthebuilt-inrechargeablebattery
Batterylife
Approximately 3 years. The battery may have reached
its operating life if the operating time decreases
drastically, even after a full charge.
(The operating life of the battery may di󰀨er depending
on usage or storage conditions.)
Removethebuilt-inrechargeablebatterybefore
disposingoftheappliance.
The battery is to be disposed of safely.
Please make sure that the battery is disposed of at an
o󰀩cially designated location if there is one.
This gure must only be used when disposing of the
appliance, and must not be used to repair it. If you dismantle
the appliance yourself, it will no longer be waterproof, which
may cause it to malfunction.
• Remove the appliance from the adaptor, press the
power switch to turn on the power and then keep the
power on until the battery is completely discharged.
• Use a screwdriver to perform steps ato gto
disassemble the main unit and remove the battery.
• Insulate the ⊕and ⊖terminals by applying tape to
them. (To prevent short circuit of terminals).
Forenvironmentalprotectionandrecyclingof
materials
This appliance contains a Lithium-ion battery.
Please make sure that the battery is disposed of at
an o󰀩cially assigned location, if there is one in your
country.
20
EW-DJ4B EU0713.indb 20 2022/7/14 下午1:40