Page 1
Read “Safety Precautions” (P.E-8 - E-12)
to ensure correct use.
EP-NZG70J
Model
Hitachi Air Purifier
Instruction Manual
Thank you for purchasing a Hitachi air purifier.
This air purifier is for household use only.
Do not use it for any other purpose besides purifying air.
Please read this instruction manual carefully before
using this product to ensure the unit is operated
correctly.
For future reference, keep this manual in an easily
accessible place.
EP-NZG70J_EN.indd 1EP-NZG70J_EN.indd 1 6/30/2017 10:32:226/30/2017 10:32:22
Page 2
E-2
Features
1. Wide suction and speedy dust collection in just 9 minutes for a 13m2 room.
Standard applicable fl oor space - 53m
2
2. With the Allergen-free HEPA Filter, fi ne dust particles are thoroughly collected.
EP-NZG70J_EN.indd 2EP-NZG70J_EN.indd 2 6/30/2017 10:32:286/30/2017 10:32:28
Page 3
E-3
Contents
O
perating Air Purifi er
Before Us
e
C
leaning and Maintenanc
e
Features ············································
Name of Each Component / Accessories
····
Operating the Touch Operation Panel
····
Safety Precautions ··························
Cautions on Use ······························
Air Cleaner Deodorizing Performance
···
Preparations for Operation ·············
Setting Filter in Unit
····························
Installation ········································
E-2
E-4
E-6
E-8
E-13
E-14
E-14
E-16
Operation ··········································
Starting Operation ····································
Switching Airfl ow Rate ······························
Useful Features ································
Operating in Option ···································
Eco Saving Operation ·······························
PM2.5 Sensor ···········································
Stopping Operation Using Off-timer ··········
Setting the Lock ········································
Memory Function / Sensors /
Auto Detection ·································
Memory Function ······································
Air Sensor ·················································
Odor Sensor ·············································
Dust Sensor ··············································
Auto Detection ··········································
Adjusting Sensory Sensitivity Setting ·······
E-17
E-17
E-17
E-18
E-18
E-19
E-19
E-19
E-20
E-21
E-21
E-21
E-22
E-22
E-21
E-21
Cleaning ···········································
Pre-fi lter, Filter ··········································
Purifi er ······················································
Dust Sensor ··············································
Replacing the Filter ·························
Replacement Interval ································
Handling the Filter ·····································
How to Replace the Filter ·························
Troubleshooting Guide ···················
Replacement Parts ··························
Specifi cations ··································
E-23
E-23
E-24
E-24
E-25
E-25
E-25
E-26
E-27
E-29
E-29
Before Use Operating Air Purifi er Cleaning and Maintenance
E-13
EP-NZG70J_EN.indd 3EP-NZG70J_EN.indd 3 6/30/2017 10:32:286/30/2017 10:32:28
Page 4
E-4
Name of Each Component / Accessories
Names of Each Component
CAUTION
Do not subject the glass panel
(made of tempered glass) to impact
Although tempered glass is
stronger and safer than normal
glass, it can break when subject
to strong impact or force.
In case of scratches or breakage,
stop using and immediately
request repairs.
Refrain from touching the broken
glass.
Power plug
Power cord
Handle
Air inlet
CAUTION
Do not hold the flaps when
moving the unit.
Doing so may cause unexpected
injury when the unit is damaged
and overturned or dropped.
Air outlet
(stainless steel net)
Glass panel
Power button
Purifier
Touch Operation
Panel (P.E-6, E-7)
Flap
Caster
To prevent falls, the movement is
only in sideways direction. (Located
at the base of the unit)
EP-NZG70J_EN.indd 4EP-NZG70J_EN.indd 4 6/30/2017 10:32:286/30/2017 10:32:28
Page 5
E-5
(P.E-) Numbers are pages containing the main description each parts.
Pre-filter
(x1)
Accessories
Filter
CAUTION
Filter (x1)
Housed inside the purifier.
The filter must be removed from the plastic packaging before
operating the unit.
The vibration during transporting the unit might cause deodorizing agent granules
to fall out from the filter.
When removing the plastic cover of the filter and attaching the filter to the unit,
make sure that your hands, clothes, and the surroundings will not get dirty.
Wipe of any granules that may have fallen or clung to the filter.
This will not affect the deodorizing performance.
*
Senses the presence of cigarette
smoke, dust, pollen, and other
similar air contaminants.
Dust Sensor (P.E-21)
Rear panel
Odor Sensor (P.E-21)
Senses the odor components in the air.
Set in the outer part of the unit.
Filter
(Allergen-free, HEPA filter)
Pre-filter
Removes large size dust.
Name of Each Component / Accessories
EP-NZG70J_EN.indd 5EP-NZG70J_EN.indd 5 6/30/2017 10:32:286/30/2017 10:32:28
Page 6
E-6
Operating the Touch Operation Panel
The indicator lights up when the child lock is set. (P.E-20)
The indicator lights up when the unit is operating on timer. (P.E-19)
The indicator lights up when the unit is operating with PM2.5 sensing. (P.E-19)
MENU
Touch this button first when the
display or operation panel is off.
When tapped again, it turns off the
display or operation panel.
Lock
(Long-press MENU for about 3 seconds)
Use this to prevent incorrect
operation. (P.E-20)
Note
The touch operation panel is made of glass.
If the touch operation panel display disappears, touch to display it again.
The touch operation panel display will disappear when is touched again.
The upper part of the touch operation panel is the display section and the lower part is the control section.
Use the touch operation panel to switch settings.
Notification Display
The glass touch may have a different reaction depending on the sur-
rounding temperature and humidity, physical condition of the user, and
the condition of the electronic appliances near by the unit.
If it does not respond after touching, release and try again.
If the interval between touches is short, the unit may respond incorrectly.
The sensitivity will not change by the force applied when touching.
There may be no response if the operation panel is wet or dirty.
Wipe off with a dry cloth to use.
The display may be difficult to view if the unit is placed in brightly lit
places such as near a window with direct sun light.
EP-NZG70J_EN.indd 6EP-NZG70J_EN.indd 6 6/30/2017 10:32:286/30/2017 10:32:28
Page 7
E-7
Operating the Touch Operation Panel
Off-timer (P.E-19)
Use this to set the off-timer.
Airflow (P.E-17)
Use this to switch the
airflow rate.
Air Sensor (P.E-21)
Display
Operation
Panel
The level of air contamination detected
by the odor and dust sensors is
indicated through different colors.
Option (P.E-18)
Use to switch to quick cycle.
EP-NZG70J_EN.indd 7EP-NZG70J_EN.indd 7 6/30/2017 10:32:286/30/2017 10:32:28
Page 8
E-8
Safety Precautions
Please read the following safety precautions carefully before using the unit.
To prevent injury to the user or other people and property damage, the following instructions must
be followed. Also read the precautions appearing in the text carefully to ensure correct use.
Defi nition of each indication
Incorrect operations that are carried out as a result of ignoring instructions will cause harm or dam-
age. The seriousness is classifi ed by the following indications.
WARNING
CAUTION
This symbol indicates the
possibility of death or serious injury.
This symbol indicates
the possibility of injury or
damage to property.
Meaning of Symbols
Indicates “warning or caution”.
Indicates “prohibition”.
Indicates “necessity”.
WARNING
To Prevent Fire, Electric Shock and Injury
AC Outlet, Power Plug and Power Cord
Remove dust from the blade and the blade mounting surface of the power plug.
Otherwise, it may cause a fi re.
Be sure to unplug the power cord from the AC outlet when cleaning or not using the
unit for an extended period of time.
Otherwise, it may cause an electric shock or injury.
Be sure to hold the plug when unplugging it.
Otherwise, it may cause an electric shock or short-circuit, which may result in a fi re.
Securely insert the power plug into the AC outlet.
Otherwise, it may cause an electric shock, overheating or fi re.
Do not stop operation by unplugging the power plug.
Otherwise, it may cause fi re, electric shock or malfunction.
Never plug or unplug the power plug with wet hands.
Otherwise, it may cause an electric shock.
Do not use a damaged power cord or power plug, or a loose AC outlet.
Otherwise, it may cause an electric shock, short-circuit or ignition.
Do not damage the power cord.
(Do not break, modify, forcibly bend, pull or twist it. Also do not place any heavy objects on it,
pinch it, or step on it when moving it with the caster.)
Otherwise, it may cause damage to the power cord, fi re or ignition.
Make sure to avoid inserting too many plugs into the AC outlet.
Otherwise, it may cause fi re or ignition.
Do not immerse the power plug in water, or pour water on it.
Do not use a power plug when wet.
Doing so may cause ground leakage, electrical shock and unit failure.
If the supply cord is damaged, it must be replaced by the manufacturer, its service
agent or similarly qualifi ed persons in order to avoid a hazard.
Do not use with a voltage other than 220-240V AC.
Otherwise, it may cause a fi re or electric shock.
EP-NZG70J_EN.indd 8EP-NZG70J_EN.indd 8 6/30/2017 10:32:296/30/2017 10:32:29
Page 9
E-9
WARNING
Before Use
Ventilate the room frequently when in use with heating appliances.
Otherwise, it may cause carbon monoxide poisoning.
This product cannot remove carbon monoxide.
Do not block the air outlet or air inlets with laundry, cloth, curtains, etc.
Poor ventilation may cause overheating or fi re.
Do not use fl ammable materials (hair sprays, insecticides, air fresheners, etc.) near
the unit.
Do not use benzene, thinner or alcohol to clean the purifi er.
Otherwise, it may lead to cracking, electric shock, ignition, smoke or fi re.
Do not use in a kitchen as a substitute for a ventilation fan and range hood fan.
Otherwise, it may cause unit deformation by heat or it may ignite a fi re in the fi lter.
Also, it may cause failure or a decrease in the lifespan of the pre-fi lter, fi lter assembly and deodorizing
fi lter.
Keep away from lit candles, mosquito coils, lit cigarettes, etc. Also, do not let smoke
from these materials enter the unit.
Otherwise, it may cause fi re.
Do not operate the unit when using fumigating (smoking) type insecticide. Do not let
chemicals enter the unit.
Use of such insecticides will cause chemicals to accumulate in the unit and depending on a
person’s sensitivity to these chemicals, it may be harmful to one’s health.
Do not place in a location where the air from the outlets will blow directly onto heat-
ing appliances.
Otherwise, it may cause incomplete combustion and carbon monoxide poisoning.
Do not use in narrow spaces such as gaps between the furniture or closet.
Poor ventilation may cause overheating or fi re.
Do not operate the unit while fi lter, etc. is detached.
Otherwis
e it m
ay cause injury or failure.
Do not tilt or tip the unit over. Do not put your weight on the unit or step on it.
Also, do not use it in an unstable place or anywhere near infants.
Otherwise, it may cause the unit to tip over due to vibration, which may cause an injury or unit
failure.
Cleaning
When cleaning, do not splash water on the unit.
It may cause short-circuiting and electric shock.
Do not add water by submerging or splashing water on the unit.
It may cause short-circuiting and electric shock.
Safety Precautions
EP-NZG70J_EN.indd 9EP-NZG70J_EN.indd 9 6/30/2017 10:32:296/30/2017 10:32:29
Page 10
E-10
Safety Precautions
(Continued)
WARNING
Place of Use
Do not use in a location where there is huge amount of oily smoke such as in cafete-
rias and eateries.
The oil residue or dust deposited in the unit may cause fi re, unit failure and unpleasant odor.
Do not use in a location where there is flammable gas, corrosive gas or metallic
dust, or risk of leakage of oil, fl ammable gas.
It may cause fi re, explosion or unit failure.
Do not use in a location where solvents such as paint and adhesives are being used
or stored.
It may cause deterioration of parts or fi re.
Do not use in a location where soot from oil, such as machine oil, is fl oating in the
air.
It may cause a crack, electric shock or fi re.
Do not use in a location where any chemical is used. (Hospitals, factories, laborato-
ries, beauty salons, photographic laboratories, etc.)
Chemicals and solvents evaporating into the air deteriorate the unit. This causes electric shock.
Do not use in a humid place or in a place where it may easily be wet, such as in a
bathroom.
It may cause electric shock or fi re due to ground leakage.
Do not place it near a hot object such as a heater.
It may cause deformation, discoloration, injury and unit failure.
Do not put in places exposed to direct sunlight, wind and rain.
It may cause overheating, electric shock and fi re due to ground leakage.
Do not use in a location where a machine tool that produces flammable dust or
sparks (such as a grinder or welder) is installed.
It may cause fi re.
Miscellaneous
Even after switching on, sometimes the air purifier is inoperative or air does not
come out. There may be “cracks” and “scratches” in the power cord, or the unit has
been moved which causes the operation to stop. There may also be unusual noise
and vibration during operation. The unit may be deformed and unusually hot. There
may be a burnt odor. If there are abnormalities aside from those mentioned, unplug
the power cord immediately to prevent accidents and contact your dealer to request
for checks or repairs.
These may cause fi re due to electric shock, ground leakage or short-circuiting.
Pay specifi c attention when the user of the air purifi er is the following:
(Infants, children, the elderly, those who cannot control their body temperature)
When the body is exposed directly to the wind for a long time, health may be compromised.
Cleaning
Do not use detergents when cleaning.
Usage of chlorine-based and acid type detergents will generate toxic gas and can cause a health threat.
Also, do not use neutral detergents as it may affect the plastic.
EP-NZG70J_EN.indd 10EP-NZG70J_EN.indd 10 6/30/2017 10:32:296/30/2017 10:32:29
Page 11
E-11
Miscellaneous
Do not put your fi nger or any other object (metal, paper, etc.) into the air inlet or outlet.
It may cause injury, electric shock and fi re.
Never attempt to disassemble, modify or carry out repairs by yourself.
It may cause fi re, electric shock or injury. (Contact your dealer for repairs)
Do not operate detection switches (for the dust fi lter and rear panel) using your fi n-
gers, rod, or tape.
Doing so may result in an injury, failure, or unexpected accident.
Children should be supervised to ensure that they do not play with the appliance.
CAUTION
Moving the Air Purifi er
Move only in sideways direction with the caster (to prevent from falling).
There are cases when the fl oor may be damaged based on the type of fl ooring.
Unplug the power cord from the AC outlet.
Lift the air purifi er when moving it along a mat, a fl oor susceptible to scratches, an
uneven fl oor or a thick carpet.
It may damage the mat, fl oor and carpet and may cause unit failure and injury when tipped over.
When carrying the air purifi er, hold the handle fi rmly.
If you hold parts other than the handle, the unit may tip over and be damaged, and may cause
an accident.
Unplug the power cord from the AC outlet.
When moving the unit without unplugging, the power plug and power cord may be damaged.
Do not touch, hold, or lift the moving fl ap.
It may cause an injury and unit failure.
When carrying the air purifi er, hold the handle.
Do not pull the power cord when moving the unit.
It may damage the power cord.
Place of Use
Do not use the air purifier near a wall that cannot be scrubbed, such as a white
cloth-covered wall.
The air purifi er will take in the surrounding air and may stain a wall near its air outlet.
Do not use in storerooms for artworks and academic materials, or for other business
purposes.
It may deteriorate the quality of the stored products.
Do not put water containers such as fl ower vases and fi sh bowls on top or near the
unit.
Water deposited in the unit may cause electric shock, fi re and unit failure.
Do not use in locations near cooking appliances.
It may cause deterioration of parts, electric shock and fi re due to heat and oily smoke.
Do not use on fl oors susceptible to scratches such as Cypress fl oors.
It may damage the fl oor.
Safety Precautions
WARNING
EP-NZG70J_EN.indd 11EP-NZG70J_EN.indd 11 6/30/2017 10:32:296/30/2017 10:32:29
Page 12
E-12
Safety Precautions
(Continued)
CAUTION
Miscellaneous
Do not move or stop the fl ap by hand or by any object
Otherwise, it may cause unit failure.
If using the purifi er around pets, do not subject any parts to urine and keep pets
away from the power cord
Otherwise it can cause electric shock and fi re. If there are damages, unplug and request repairs.
Do not subject the glass panel (made of tempered glass) to impact
Although tempered glass is stronger and safer than normal glass, it can break when subjected
to strong impact or force.
In case of scratches or breakage, stop using and immediately request repairs.
Refrain from directly touching the broken glass.
Use only a genuine fi lter for the Hitachi Air Purifi er
Other fi lters may cause unit failure.
This appliance is not intended for use by persons (including children) with reduced
physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of appliance
by a person responsible for their safety.
Cleaning
Perform panel removal and installation carefully.
It may cause injuries such as pinching your fi ngers.
When cleaning, lay a soft cloth on the fl oor and place the unit and detached parts
(panel, etc.) on it
Otherwise, it may scratch the fl oor.
Attach the parts securely after cleaning
Do not use with the rear panel, pre-fi lter, fi lter, and any other parts detached. Otherwise, it may
cause unit failure.
EP-NZG70J_EN.indd 12EP-NZG70J_EN.indd 12 6/30/2017 10:32:296/30/2017 10:32:29
Page 13
E-13
Cautions on Use
Do not operate with the fi lter detached
Otherwise, no cleaning effect can be expected. It
may also cause unit failure.
Do not block or touch the odor and
dust sensors
It may reduce the sensitivity of the sensors.
Do not directly fan plants and animals
It may adversely affect them.
Refrain from moving (changing the orientation or lifting the unit, etc.) during operation
Moving the unit while in operation may cause the fan
to hit the inner case, generate noise, pull and disconnect the power cord, and cause unit failure.
Do not use in locations near cooking appliances
It may cause deformation and discoloration due to heat or oily smoke,
unit damage or fire.
Place the purifier and the cooking appliance at least 1m apart from each other.
Ventilate closed rooms occasionally
The purifier does not have
a ventilation effect (removal of carbon monoxide
and other contaminants).
*
The purifier cannot remove harmful substances in cigarettes (carbon
monoxide, etc.).
Refrain from placing any object on the unit and blocking
the air inlet and outlet
Doing so may cause unit failure
and injury.
Do not use near television or radio
Doing so may interfere with
broadcasts.
Please them at least 2m apart
from each other.
The same applies for cordless phones and wireless microphones.
Safety Precautions Cautions on Use Air Cleaner Deodorizing Performance
Air Cleaner Deodorizing Performance
The fi lter of the air purifi er does not remove all odors at once, but rather circulates the air in the room, re-
moving odors gradually.
The fi lter is disposable. The deodorizing performance of the fi lter decreases with use.
When the odor emitted from the vent becomes bothersome, clean the fi lter.
(P.E-23)
When the fi lter has absorbed strong odors or has been continually used in an odorous room, the odor com-
ponents remain in the fi lter and unit, causing the odor to be emitted from the vent.
If this happens, you can decrease the amount of odor that remains in the unit by continuing to operate the
purifi er while ventilating the room.
The dust and other contaminants attached to the fi lter and unit also contain odor components.
Periodically clean the fi lter and unit so that odor is less likely to be emitted from the vent.
(P.E-23, E-24)
If the odor emitted from the vent remains bothersome after cleaning, replace the fi lter.
(P.E-25)
EP-NZG70J_EN.indd 13EP-NZG70J_EN.indd 13 6/30/2017 5:08:48 PM6/30/2017 5:08:48 PM
Page 14
E-14
Preparations for Operation
Movement with casters should be done slowly. The movement is only in sideways direction. (To prevent from falling)
No cleaning effect will be experienced if the fi lter is set without detaching the plastic cover. It will also cause unit failure.
Do not tip over or tilt the unit.
Setting Filter in Unit
Setting procedure is the same with fi lter replacement. (Use only genuine Hitachi Air Purifi er fi lters.)
Remove the filter
1
2
3
Remove the filter from the
unit.
Remove the filter from the
plastic packaging.
Remove rear panel and pre-filter
Place the unit on a flat and stable location.
Remove the pre-filter.
4
Hold the bottom part of the rear panel
(2 locations), pull it out gently, and shift
slightly upward to remove it.
Slide the switch upwards (2 locations)
to release the lock.
Switch
Slide the switch upward.
Pre-filter
Plastic packaging
Filter
Filter
Filter
CAUTION
Install the filter to the unit
Do not put excessive force and deform
the filter.
Set the filter so that you can see the label
CAUTION
EP-NZG70J_EN.indd 14EP-NZG70J_EN.indd 14 6/30/2017 10:32:306/30/2017 10:32:30
Page 15
E-15
5
4
Install the pre-filter to the unit
Securely plug the tabs of the pre-filter to the matching holes in the unit.
Slide the switch downwards (2 locations) to lock.
Gently pull the pre-filter to make sure it is not out of place.
Pre-filter
Switch
Slide the switch downward.
Plug the tabs of the pre-filter
Tab
Insertion hole
Attach the rear panel to the unit
Plug the tabs (2 locations) of the
upper part of the rear panel to
the matching holes in the unit.
Gently push the bottom sides of
the panel one after another, and
close it securely until it clicks.
Insert to the hole
Preparations for Operation
EP-NZG70J_EN.indd 15EP-NZG70J_EN.indd 15 6/30/2017 10:32:306/30/2017 10:32:30
Page 16
E-16
Installation
A caster is attached at the base of the unit, thus it should be set on an even, stable and sturdy fl oor.
(No stopper attached to the caster)
Avoid places near heating or cooling equipment and other similar equipment, and choose a location with a good air
circulation.
Keep the rear at least 3cm away from the wall. Depending on the operating environment, walls or fl oors near the
outlet may be stained as the unit draws in air. If this is a concern, move it from its current location and clean the surrounding walls and fl oors regularly.
Be sure to provide space around the sides of the unit so that the inlets and vents are not blocked by curtains or
furniture.
WARNING
Do not place on shelves, desks, tables or other similar places
Unit may fall due to vibration or tilting, and may cause injury and electric shock.
Moving the unit with the caster can be done on a sturdy and even fl oor. To move the unit on a mat,
carpet, or places with uneven surface, carry the unit by its handle.
Be careful not to pull or pinch the power cord.
Leaving the unit at the same place for an extended period of time may leave stains on the walls and fl oors.
When cleaning the unit, move it to another place and also include cleaning the fl oor.
* Leave space
* Leave space
At least 3cm
*Air inlet and outlet must not
be covered by curtains or
furnitures
EP-NZG70J_EN.indd 16EP-NZG70J_EN.indd 16 6/30/2017 10:32:306/30/2017 10:32:30
Page 17
E-17
Operation
Starting Operation
Securely insert the power plug to the outlet
1
2
Press the power button
Operation will start, and indicator
will light up.
Pressing the power button
while the unit is operating will
dim the indicator and stop the
operation of the unit.
After all indicators have light up at once,
“Auto” will light up.
For the first 3 minutes, the unit will
check and store the condition of the
room air.
During that time, the “Air Sensor” will
flash a green light.
Blinking
Power button
“Air Purify” mode is set as a factory default.
From the second use onward, the memory function enables operation based on the saved status.
(P.E-21)
For power saving, the display and operation panel other than the notifi cation display and the air sensor will turn off
approximately one minute after the unit stops operating.
Standby Power Consumption
As long as the power plug is inserted in the outlet, the unit consumes approximately 2W of power, even if the unit
is not in use.
(Unplug from the outlet if the unit will not be used for an extended period of time.)
Installation Operation
Switching Airfl ow Rate
Each time
Air
flow
button is pressed while the unit is operating, the mode switches in the following order.
Airflow
“Medium” “High”“Silent”
…
MaxAuto Auto
EP-NZG70J_EN.indd 17EP-NZG70J_EN.indd 17 6/30/2017 10:32:306/30/2017 10:32:30
Page 18
E-18
Operating in Option
Rapid
For the fi rst hour, the unit operates in “High” airfl ow rate, and depending on the level of air contamination, the unit
will operate in either “High” or “Medium” airfl ow rate. For approximately 8 hours, room air will be forcefully circulated
in “High” airfl ow rate for approximately 10 minutes once every hour. Sensitivity of odor sensors will increase, and depending on the level of air contamination, the unit will operate in either “High” or “Medium” airfl ow rate. Afterwards,
high-speed will be deactivated and the airfl ow rate will return to its previous “Auto” operation mode.
Use this when grilling, cooking hot pot, or in similar instances where the room is exposed to a great deal of strong
odor.
Odor
Once every hour, room air will be forcefully circulated in “High” airfl ow rate. Sensitivity of odor sensor will increase,
and depending on the level of air contamination, the unit will operate in either “High” or “Medium” airfl ow rate.
Use this regularly for environments with strong odors such as garbage, drainage, pet and other similar odors.
You can select Option while operating.
The Quick Cycle will be switched at each touch.
Touch the button
(If it returns to No Display (Clear), it is in [Auto] airflow)
Option
Pollen Odor Rapid AbsenceNo Display (Clear) PM2.5 sensor
Useful Features
Pollen
Once every hour, room air will be forcefully circulated in “High” airfl ow rate. Sensitivity of odor and dust sensors will
increase, and depending on the level of air contamination, the unit will operate in either “High” or “Medium” airfl ow
rate. The fl ap direction will be diagonal.
Use this when worried about pollens getting into the air.
Absence
The unit will operate on “Max” airfl ow rate for the fi rst fi ve minutes (fl ap direction: upward), then it will operate for
about 55 minutes in “High” airfl ow rate (fl ap direction: swing (30 minutes) upward), and the unit will stop operating
afterwards.
Use this to clean the room air while away.
The unit automatically stops operation when the air becomes clean, saving electricity cost.
(P.E-19)
(Eco Saving Operation)
PM2.5 sensor
Switch to sensing that is suitable for small particles, like PM2.5 (general term for micro particles below 2.5µm).
(P.E-19)
EP-NZG70J_EN.indd 18EP-NZG70J_EN.indd 18 6/30/2017 10:32:306/30/2017 10:32:30
Page 19
E-19
Useful Features
Eco Saving Operation
The unit automatically stops operation when air becomes clean, saving electricity cost.
Also, if this status continues for longer than 8 hours, the unit will automatically stop operating.
Normal Auto Operation
When the air is clean, the unit will continuously operate in “Silent” airfl ow rate and not stop.
Eco Saving Operation
When the air is clean and “Silent” airfl ow rate operation continues for 10 minutes or longer, the fan stops for about
50 minutes and the unit intermittently operates using “Silent” for about 10 minutes.
If this status continues for longer than 8 hours, the unit will automatically stop operating.
* During eco saving operation, the level of air contamination is detected by the odor and dust sensors. When the
sensors detect odors and dust, the airfl ow rate will switch depending on the level of air contamination.
When the air is clean and the “Silent” airfl ow rate operation continues for 10 minutes or longer, the unit will start
intermittent operation again.
Stop
10 minutes
50 minutes
50 minutes
10 minutes
10 minutes
“Silent” Airflow
Operation
PM2.5 Sensor
Note
Operation modes other than “Air Purify” cannot be set.
While operating in PM2.5 sensing, the air sensor will light up, then enlarge and shrink slowly.
For the fi rst 90 seconds of operation, the unit will operate in “Max” airfl ow rate (air sensor: red).
The fl ap direction will be diagonal.
It will not respond to the switching of sensor sensitivity.
(P.E-22)
Change into a sensor that is suitable for small particles, like PM2.5 (general term for micro particles be-
low 2.5µm). The level of contamination in the air will be detected by the dust sensor, and the unit will operate automatically between “Medium” to “Max” airfl ow rate.
(Odor sensor control will not be performed)
Stopping Operation Using Off-timer
Touch to set the timer.
At each touch the following display will be appear on the display for setting.
No Display 4hr
Timer
Display Setting Description
No Display
Automatic stop after about 4 hours of operation4hr
Not Set
Set the off-timer to automatically stop the unit after the set operation time.
EP-NZG70J_EN.indd 19EP-NZG70J_EN.indd 19 6/30/2017 10:32:306/30/2017 10:32:30
Page 20
E-20
Setting the Lock
Prevents accidental operation by children through restricting the operation.
This can be set while the unit is operating.
The same process goes for unlocking the unit.
Long-press for about 3 seconds
1
To cancel the child lock, long-press for about 3 seconds. Then the buzzer will ring
twice (beep, beep), and the child lock will be canceled.
Each time is long-pressed for about 3 seconds, the child lock be set or cleared.
The light will go off when the child lock is canceled.
After long-pressing for about 3 seconds, a buzzer will ring once (beep) and the
child lock indicator will lit.
·
Lock
Indicator
Note
After setting “Lock”, no other buttons can be used except the
power button and .
In the event of a power interruption, restoring the power does not deactivate the child lock setting, even after
pressing the
power button and after removing the power plug from the outlet. Hold for 3 seconds
and cancel the settings.
Useful Features
(Continued)
EP-NZG70J_EN.indd 20EP-NZG70J_EN.indd 20 6/30/2017 10:32:316/30/2017 10:32:31
Page 21
E-21
Useful Features Memory Function / Sensors / Auto Detection
Memory Function / Sensors / Auto Detection
Memory Function
When
power button is turned on, the unit operates the previous operation mode set prior to turning off.
Air Sensor
The level of air contamination detected by the odor
and dust sensors is indicated by different colors.
Air sensor
Display Color : Green Orange Red
Dirtiness Level: CleanࠉࠉࠉࠉࠉDirty
Note
When the unit is placed in a location where contamination is diffi cult to detect, or when the sensor needs cleaning,
the display may not change.
(P.E-24)
While operating in PM2.5 sensing, the air sensor display lights up and then blinks slowly.
Odor Sensor
The sensor detects odors in the air such as cigarette smoke or pet odors.
Even if you think the air is clean, the unit may continue the operation if the odor sensor
detects any gas component that has not been removed by the fi lter.
Also, any of the following may be detected by the odor sensor.
· Combustion gases from heating appliances during use, alcohol, odor of perfumes or
cosmetics used in beauty parlors or aesthetic salons, sprays, vapors, abrupt temperature changes, etc.
Odor Sensor
Dust Sensor
The dust sensor is capable of sensing dust in the air such as cigarette smoke,
house dust, pollen, etc.
The dust sensor may fail to sense dust stirred up when you lay out or put away bedding, which contains signifi cantly fewer contaminants than cigarette smoke, etc. In
such a case, the air sensor display may appear to be different from the apparent
dust in the air.
The dust sensor may not function properly if the sensor is dirty.
Carry out periodical cleaning of the dust sensor and the parts around it.
(P.E-24)
Cover is removed
Dust sensor
EP-NZG70J_EN.indd 21EP-NZG70J_EN.indd 21 6/30/2017 10:32:316/30/2017 10:32:31
Page 22
E-22
Auto Detection
The air purifi er performs automatic operation by detecting room air contamination using the “Odor Sensor” and “Dust
Sensor”.
During the fi rst 3 minutes after the power is turned on, the unit will check the air condition of the room.
The purifi er operates even while it checks the air condition of the room.
During this time, the “Air Sensor” fl ashes green.
After checking the air condition, the “Air Sensor” will display the room air contamination using the “Odor Sensor”
and the “Dust Sensor”.
If you plug in the power cord in an environment containing contaminated air, the sensitivity of the sensor may be
reduced.
To clean the air of the room, operate in “High” or “Max”. Or open a window and unplug the power cord from the AC
outlet when ambient air is clean and plug it back in after 10 seconds.
Adjusting Sensory Sensitivity Setting
Sensitivity of the “Odor Sensor” and “Dust Sensor” which performs automatic switching of airfl ow rate can be ad-
justed in 3-step fashion.
You can adjust the sensor sensitivity setting as desired.
The “Odor Sensor” and “Dust Sensor” are similarly adjusted.
While the sensitivity is being displayed (about 10 seconds),
continue long-pressing for about 3 seconds, while pressing once more.
While pressing , long-press for about 3 seconds
The sensitivity display will change from .
The current sensitivity is indicated and displayed. (Factory setting is )
Furthermore, when switching sensitivity, repeat procedure .
When repeating, the sensitivity display will switch like this ….
About 10 seconds after the sensitivity display has been switched, it will disappear and the selected sensor sensitivity will be set.
1
2
3
2
Air
flow
2
1
Medium
Display
Low
High
Sensor
Sensitivity
…
.
Air
flow
Air
flow
Timer
Timer
Note
Switching the sensor sensitivity is not supported in the “PM2.5 Sensor” cycle. (P.E-19)
Memory Function / Sensors / Auto Detection
(Continued)
EP-NZG70J_EN.indd 22EP-NZG70J_EN.indd 22 6/30/2017 10:32:316/30/2017 10:32:31
Page 23
E-23
Do not splash water on the unit. Doing so may cause a unit failure.
Do not use volatile solvents, such as gasoline, thinner, benzene, wax, kerosene, alcohol, etc. or polishing powder, or detergent (used for kitchen or laundry). Such chemicals could cause deformation, discoloration, damage or removal of print labels.
When using a chemically treated cloth, follow safety instructions.
Do not use a dryer or heater to dry the unit. Heating could cause deformation, discoloration, damage or removal of print labels.
Lay a soft cloth or similar material beneath and around the purifi er body to protect the fl oor against scratches
and from getting wet.
Do not tilt or tip over the unit.
Cleaning
Do not stop operation by unplugging the power plug.
Otherwise, it may cause fi re, electric shock or unit failure.
WARNING
CAUTION
Pre-fi lter, Filter
Remove the rear panel, pre-filter and filter (P.E-14)
Check if the operation has stopped before removing the power plug from the socket
While operating, press the power button and stop operation.
Cleaning
Remove dust using a vacuum cleaner.
Lightly clean using the nozzle brush of the vacuum cleaner
and vacuum the dust.
Remove dirt by washing with water.
If it is extremely dirty, wash it with water and a soft sponge
without using excessive force. Drain well and let it dry in a
well-ventilated area away from direct sunlight.
The dust on the filter may emit an odor.
Be sure to remove the dust using a vacuum cleaner or the like.
Lightly clean using the nozzle brush of the vacuum cleaner and
vacuum the dust.
1
2
3
4
5
Pre-filter
Filter
Pre-filter
Nozzle brush
The stainless coating of the surface will peel off if it is
rubbed with the floor nozzle of a vacuum cleaner or a scrub.
Do not use detergent (kitchen or laundry use) for cleaning.
CAUTION
Attach the filter (P.E-14)
Attach the pre-filter and rear panel to the unit (P.E-15)
Nozzle brush
Filter
(Do not wash with water)
Do not put excessive force and deform the filter.
CAUTION
Note: Clean the back face as well.
The pre-fi lter is a consumable part.
When damaged pre-fi lter needs to be replaced, purchase the replacement part (Part No. EP-HG50-004).
(P.E-29)
Clean the pre-fi lter and fi lter frequently because dust and dirt get on them.
Cleaning
Memory Function / Sensors / Auto Detection
EP-NZG70J_EN.indd 23EP-NZG70J_EN.indd 23 6/30/2017 10:32:316/30/2017 10:32:31
Page 24
E-24
Purifi er
(Guide for Cleaning: About Once a Month)
Wipe off dirt on the unit and glass panel, rear panel, and the surface using a soft, damp cloth.
Clean adhering chemicals such as oil components and insecticides regularly.
Remove dust from the surfaces of the rear panel air inlet, dust sensor, odor sensor, using a
vacuum cleaner and wipe off using a soft cloth.
Rear panel
Dust sensor
Odor sensor
Air inlet
Nozzle brush
Dust Sensor
(Guide for Cleaning: At Least Once Every 3-6 Months)
Clean regularly at least once every 3-6 months.
The dust sensor is less likely to detect dirt in the air if it is not cleaned regularly.
If the sensor is dirty, it might not work properly and will detect dust even if the air is clean.
Remove dust sensor cover and collect
the dust
Place your finger on the lower part and press.
Remove the dust cover, vacuum well using the nozzle
brush of the vacuum cleaner, and wipe using a soft cloth.
Check if the operation has stopped before
removing the power plug from the socket
While operating, press the power button and
stop operation.
1
2
3
Wipe the lens with a cotton swab
(commercial product)
CAUTION
Dust sensor cover
Nozzle brush
Lens
When dirt is difficult to remove, wipe the lens
with a cotton swab slightly moistened with
water, then wipe with a dry cotton swab after.
Remove all dust around the lens.
After cleaning, attach the dust sensor cover.
After cleaning, plug the air purifier in a clean
environment and turn on in Purify/Auto
operation mode. If the Air Sensor does not
turn green after about 10 minutes, there
might be remaining dust left.
Please clean it again.
Do not put excessive force on the lens.
This may cause damage.
Do not use excessive force when removing and
attaching the tabs of the dust sensor cover.
This may cause damage.
Cleaning
(Continued)
EP-NZG70J_EN.indd 24EP-NZG70J_EN.indd 24 6/30/2017 10:32:316/30/2017 10:32:31
Page 25
E-25
Replacing the Filter
Replacement Interval
The fi lter is disposable. The deodorizing performance of the fi lter decreases with use.
The standard life of a fi lter is approximately 10 years as determined by the Japan Electrical Manufacturers'
Association.
A test according to JEM1467(Japan Electrical Manufacturers' Association) was conducted. If 5 cigarettes are
smoked per day:
[Filter] Number of years is up to the point the air purifying time takes twice as long as when the fi lter was new.
* This is only a guide. It differs from the actual use in an average household.
The fi lter should be replaced immediately if its color resembles any of the colors on the dirtiness label at-
tached to the unit.
The colors on the dirtiness label only serve as a guide. Depending on the installation location, the actual color
of the contaminated fi lter may differ from the color on the label.
Dirtiness Label
For the room seldom
exposed to cigarette
smoke
For the room
always exposed
to cigarette smoke
Filter Replacement Guide
Replace the filter
promptly when its
color becomes
similar to either
color.
Replace the fi lter when it becomes diffi cult to remove odor.
Depending on the location and usage, it may also be shortened. If it becomes diffi cult to remove dust or
odor, replace the fi lter immediately. Otherwise, the fi lter may generate odors.
The following cases will shorten the life of the fi lter:
When the purifi er takes in oily smoke, carbon substances (soot), etc. or when the smell of new building materials
remains after the construction or remodeling of a building
When used in stores, such as in coffee shops, game parlors, barber shops, beauty parlors, hotels, inns, and of-
fi ces
When used in places with strong smells such as cigarettes, barbecue, aroma oils, or air fresheners
When the purifi er takes in combustion gases generated by heating appliances
When the purifi er takes in solvents such as paints, adhesives, etc.
When used in dusty locations near roads subject to heavy traffi c.
Handling the Filter
Make sure to take the fi lter out of its plastic cover before using.
Do not set the fi lter while it is still inside the plastic cover. This may cause a unit failure.
Avoid handling it roughly.
Do not crush, crumple, or roll the fi lter.
When the fi lter is broken, it will not have any cleaning effect.
Do not wash the fi lter.
The fi lter cannot be reused even after washing. Please buy and replace it with a new fi lter.
The fi lter contains plastic. Dispose of the fi lter according to local regulations.
Cleaning Replacing the Filter
EP-NZG70J_EN.indd 25EP-NZG70J_EN.indd 25 6/30/2017 10:32:326/30/2017 10:32:32
Page 26
E-26
How to Replace the Filter
Remove the rear panel and pre-filter (P.E-14)
Remove the old filter (P.E-14)
Remove the plastic packaging of the new filter, and attach the filter in the unit
Attach the pre-filter and rear panel to the unit (P.E-15)
Check if the operation and the fan have stopped, and then unplug the power cord
While operating, press the power button and stop operation.
1
2
3
4
5
CAUTION
Use only a genuine filter for the Hitachi Air Purifier
Other filters may cause unit to malfunction.
CAUTION
If the filter is set while without removing its plastic packaging, it will not be able to
have a cleaning effect. It will also cause unit malfunction.
The vibration during transporting the unit might cause deodorizing agent granules to
fall out from the filter.
When removing the plastic cover of the filter and attaching the filter to the unit,
make sure that your hands, clothes, and the surroundings does not get dirty.
Wipe off any granules that may have fallen or clung to the filter.
This will not affect the deodorizing performance.
CAUTION
Do not put excessive force and deform the filter.
Filter
Filter
Replacing the Filter
(Continued)
EP-NZG70J_EN.indd 26EP-NZG70J_EN.indd 26 6/30/2017 10:32:326/30/2017 10:32:32
Page 27
E-27
Troubleshooting Guide
Troubleshooting GuideReplacing the Filter
Before Requesting Repairs
Symptoms Check Solution
Air does not
come out or it
will not turn on
Is the power plug properly inserted in the outlet? Insert the power plug properly in the outlet.
Is the breaker switched off? Switch on breaker.
Did you turn on the “Power” button on the unit? Press the “Power” button to turn on.
Are the fi lter correctly installed in the unit?
Install fi lter correctly in the unit. (P.E-14, E-15)
It cannot be
operated
Is the child lock set? Cancel the setting.
(P.E-20)
Are there any water droplets or dust on the opera-
tion panel?
Wipe off with a soft cloth.
(P.E-6, E-7)
Are you wearing any gloves or have bandages? Touch it directly.
Are you touching any other buttons? Touch one at a time.
The operation
stopped midway
Are there any strong impact or is the unit tilted?
Make sure not to subject the unit to strong impacts.
Or place it in on a stable, even location.
Is it operating in “Absence” or “Eco Saving Opera-
tion” cycle?
Switch to other quick cycles.
(P.E-18, E-19)
The airfl ow rate does
not decrease even
though the air is clean
Is the airfl ow rate switched?
Touch Airfl ow Level button and select Auto or another airfl ow rate.
(P.E-17)
The airfl ow
rate does not
increase even
though the air
is contaminated
Is the airfl ow rate switched?
Touch Airfl ow Level button and select Auto or another airfl ow rate.
(P.E-17)
Is the odor sensor opening blocked by dust or any
other objects?
Clean the odor sensor.
(P.E-24)
When the power plug is in the outlet, did the air
around become clean?
Switch the airfl ow rate.
(P.E-17)
Or open a window, unplug the power plug from
the outlet when the surrounding air becomes
clean, and plug it in again after 10 seconds.
(P.E-22)
The air sensor display
color does not
change from
green
Is the unit placed in a location where it cannot be
reached by odors and dust?
Try moving it to another location.
Is the dust sensor dirty?
Clean the dust sensor.
(P.E-24)
Is the odor sensor opening blocked by dust or any
other objects?
Clean the odor sensor.
(P.E-24)
The air sensor display
color does not
change from
red
Is there anything nearby that the odor sensor may
detect?
Heating appliances that generate combustion gases
Alcohol, cosmetics, sprays, etc.
The purifier may detect components of invisible
gas that cannot be cleaned by the fi lter and still
continue operating.
Open a window for ventilation.
(P.E-22)
Is the dust sensor dirty?
Clean the dust sensor.
(P.E-24)
Is the odor sensor opening blocked by dust or any
other objects?
Clean the odor sensor.
(P.E-24)
It is hard to remove the smell
or the unit has
a smell
Is the pre-fi lter too dirty?
Refer to “Pre-fi lter” in “Cleaning” when cleaning
the pre-fi lter.
(P.E-23)
Is the fi lter dirty?
Or is it time to replace the fi lter?
Refer to “Replacing the Filter” when replacing
the fi lter.
Depending on the location or usage, the replacement interval may be shorter.
(P.E-25)
The airfl ow rate
switched in the
middle of operation
Is it set in “Auto” airfl ow rate, or “Pollen” or “Eco
Saving Operation” quick cycles?
Switch airfl ow rate and quick cycle.
(P.E-17 - E-19)
Are the rear panel, fi lters correctly set? Set them correctly.
EP-NZG70J_EN.indd 27EP-NZG70J_EN.indd 27 6/30/2017 10:32:326/30/2017 10:32:32
Page 28
E-28
Following Conditions are Normal
Sounds and Vibrations
Symptoms Cause (This is normal)
The flap makes whirring, rattling, and rumbling
noises when it is opened, closed, or in swing mode
It is the sound of the motor that moves the fl ap.
The unit vibrates when it is on “Max” airfl ow rate.
It is because of the rotation of the fan.
When switching the operation mode or airflow rate, the purifier sometimes makes
whirring and whirling sounds
This is the sound of the unit changing the rotational speed of the
motor.
Heat and Smells
Symptoms Cause (This is normal)
The air coming out of the air outlet smells
The unit’s parts have a smell when it is fi rst used.
Or the deodorizing performance of the fi lter has decreased.
Clean the fi lter.
(P.E-23)
The Touch Operation Panel is warm
The unit’s interior is lined with control circuits.
This causes the unit to become warm.
Operations / Others
Symptoms Cause (This is normal)
The movement of the fl
ap is unstable, or its
direction is misaligned
It may have become misaligned when it was moved by hand. If it
does not work properly because it was moved by hand, stop it by
pressing the ”Power” button once, and start the operation again.
The fan stopped
The fan may stop if it is set in eco saving operation.
(P.E-18, E-19)
The rotation does not increase smoothly
when “Max” airfl ow rate is used
The rotation gradually increases.
It takes approximately 1 minute for the rotation to increase.
Noise enters the television and radio
Separate the purifi er from the television and radio, or change the
orientation of the purifi er.
Or, use an outlet in a different location.
The touch operation panel display disappeared
For power saving, the display and operation panel other than the
notifi cation display and the air sensor will turn off approximately
one minute after the unit stops operating.
Troubleshooting Guide
(Continued)
Alert Display
Symptom Cause
All airfl
ow indicators are
blinking.
Faulty fan rotation.
Stop the operation, unplug the power cord from AC outlet and contact your dealer for service.
EP-NZG70J_EN.indd 28EP-NZG70J_EN.indd 28 7/6/2017 1:31:23 PM7/6/2017 1:31:23 PM
Page 29
E-29
Replacement Parts Specifi cations
Replacement Parts
Purchase from Hitachi Home Appliances dealers.
Filter assembly for Hitachi Air Purifi er
(Allergen-free, HEPA fi lter)
EPF-G60H
Pre-fi lter
Specify service part EP-HG50-004.
Specifi cations
Power Supply AC 220-240V 50-60Hz
Applicable Floor Space 53m
2
Max High Medium Silent
Airflow Rate (m
3
/min.) 7.0 4.0 2.7 1.1
Power Consumption (W) 50 13 8 6
Unit Dimensions 669mm (H) × 360mm (W) × 254mm (D)
Weight Approx. 10.5kg
Power Cord Length Approx. 1.8m
Troubleshooting Guide
EP-NZG70J_EN.indd 29EP-NZG70J_EN.indd 29 6/30/2017 10:32:336/30/2017 10:32:33
Page 30
E-30
EP-NZG70J_EN.indd 30EP-NZG70J_EN.indd 30 6/30/2017 10:32:336/30/2017 10:32:33
Page 31
E-31
EP-NZG70J_EN.indd 31EP-NZG70J_EN.indd 31 6/30/2017 10:32:336/30/2017 10:32:33
Loading...