INSTRUCTION MANUAL FOR
CITIZEN DIGITAL BLOOD
PRESSURE MONITOR CHUG330
Thank you very much for purchasing
CITIZEN product. This device is a noninvasive blood pressure monitor by
oscillometric method and is intended to
be used for home use. It can measure thesystolic blood pressure (SYS), the diastolicblood pressure (DIA) and the pulse rate.
• Please read all of the information inthis instruction manual before
operating the device.
• Be sure to have this instruction
manual to hand during use.

2101

Date of issue: 2021-04-01

SYMBOL EXPLANATIONS: Type BF applied part

: Keep dry: Warning: Caution: Refer to instruction manual before use.
: Waste electrical products should not be disposed of with household waste.
Please recycle where facilities exist. Check with your local authority or
retailer for recycling advice.
To protect the environment, dispose of empty batteries at your retail store orat appropriate collection sites according to national or local regulations.
: Manufacturer

Name: CITIZEN SYSTEMS JAPAN CO., LTD.
Address : 6 -1-12, Tanashi-cho, Nishi-Tokyo-shi, Tokyo
188-8511, Japan

Factory
Name: CITIZEN SYSTEMS (JIANGMEN) CO., LTD.
Address : Building 6, 399 Jinxing Road, Jianghai District, Jiangmen, Guangdong, China
Name: EMERGO EUROPE: European representative
Address : Prinsessegracht 20, 2514 AP The
Hague, The Netherlands: The CE marking indicates the conformity of the product with the Union
legislation applying to the product and providing for CE marking.

SAFETY PRECAUTIONS

Be sure to read the following instructions before using the device.
Warning indicates a potentially hazardous situation which it may result in death orserious injury.
Caution indicates a potentially hazardous situation which it may result in injury orproperty damage. The property damage refers to consequential damage to buildings,
household, belongings, livestock, and pets.
Consult your physician before using the device if you have following conditions suchas heart disease, cardiovascular disease, common arrhythmias, such as atrial or
ventricular premature beats or atrial fibrillation, arterial sclerosis, poor perfusion,
diabetes, pregnancy, preeclampsia, renal disease, weak pulse, experiencing
mastectomy, other blood circulatory diseases, or if you use a cardiac pacemaker.
Do not use measurement results for self-diagnosis and self-treatment. Always consult
your physician.
If the battery fluid gets in your eyes or on your skin, rinse it off with water immediately
and then receive treatment from your physician.
Do not use the device on the injured arm or the arm under medical treatment.
Do not attach the cuff on the arm while on an intravenous drip or blood transfusion.
Do not share the cuff with other infective person to avoid cross-infection.
Do not use the device in the vicinity of flammable gases such as those used foranesthesia. It could ignite the gases and cause an explosion.
Do not use the device in enriched oxygen environments such as a hospital's
hyperbaric chamber or oxygen tent. It could ignite the oxygen and cause a fire.
The air hose of the cuff or the AC adapter cord may cause accidental strangulation in
infants.
CautionIf you find any serious incident that has occurred in relation to the device,please report to the manufacturer and the competent authority of the Member
State.

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Do not use the device for any purpose other than measuring blood pressure.
Do not attempt to disassemble, repair or modify the device or the cuff.
Do not use the device for infants or persons who cannot express their intentions.
Do not measure your blood pressure consecutively or frequently. It causes blood
congestion and you will not get a correct reading. Wait at least a few minutes before
measuring again.
If you feel there is something abnormal with your body or you start to feel unwellduring measurement, discontinue use and consult your physician.
If the irregular heartbeat indicator appears frequently, consult your physician about
your health.
Press the “START/STOP” button to reduce the pressure immediately or remove the cuff
if it does not start deflating during the measurement.
Do not use device near a mobile phone, other devices that emit electromagnetic
fields or in high electromagnetic environment. This could cause malfunction.
Some models of this device may utilize an AC adapter. In cases where the AC adapter
may be used, please read the following precautions.
When the product will not be used, unplug the power plug from the power outlet.
When disconnecting the power plug from the outlet, do not pull the power cord.
Always disconnect it by holding the power plug.
Do not insert or disconnect AC adapter from power outlet while your hands are wet.
Do not use the AC adapter if the power cord or plug is damaged or the plug is loosein the power outlet.
Wipe off any dust on the power plug.
Do not apply excessive force to the power cord or twist it, or tie the power cord in abundle during use.
Please use the dedicated AC adapter (model: AC-230CZ).

2 MonthDisplay
Battery icon

Date

3 DateSystolic bloodpressure

WHO bloodpressureclassification
indicator

Diastolic bloodpressure

Body movement
icon

Pulse rate/
Memory number

Memory icon
Average icon

Irregular heartbeat (IHB)
indicator• Be sure that the cuff size is appropriate to your arm circumference before attaching
the cuff. Refer to the “SPECIFICATIONS” for the size.
• If you feel urinate, do so before measuring your blood pressure.
• Take five or six deep breaths and then relax before measuring your blood pressure. If
you are tense when taking measurement, you will not get a correct reading.
• Your blood pressure will be elevated if you are anxious or irritated, suffering from lackof sleep or constipation, or have just taken some exercise or eaten a meal.
• Do not measure your blood pressure after smoking, bathing or drinking alcohol, coffee
or tea.
• Measure your blood pressure where the room temperature is around 68°F/20°C. Do
not measure your blood pressure when it is below 50°F/10°C or above 104°F/40°C inthe room.
• Measure your blood pressure when you are relaxed and still. Keep the cuff at theheight of your heart and do not move your arm and talk.
• Analyzing blood pressure data gathered over a long period is more important thanjust checking one measurement. Choose the time of day that you are most likely to beable to maintain taking measurements and try to measure your blood pressure at thesame time every day.

NAMES OF PARTS

Memory button

5 Minute
Press the “Memory” button repeatedly to increase the value of the minute. Press the“START/STOP” button to confirm the minute setting. Then, 12H or 24H begins
flashing.

6 12H or 24H
Press the “Memory” button repeatedly to choose the 12H or 24H. Press the “START/STOP” button to confirm time format setting. ON or OFF begins flashing.

1 Remove the battery cover.
Place a finger on the hook, and pull the cover toward you to open.

2 Insert the batteries.
3 Close the battery cover.
Fit the lugs into the recesses and close the battery cover until you hear a click.
* When the battery iconoris displayed, or nothing appears in the display,replace all 4 batteries with new ones at once. In case rechargeable battery is used,
please charge it.
* Do not use any other kind of battery other than that alkaline, manganese, nickelhydrogen , and do not mix them up.
* In the case of battery replacement, the memory is preserved even if the batteries are
replaced.
* Insert the batteries then set the clock.
* Blood pressure measurement is possible even without setting the clock. By setting theclock, you can record daily measurement results together with the time.
– USING AC ADAPTER –Insert the AC adapter plug into the AC adapter socket on the device.
When removing the AC adapter, unplug the plugfrom the outlet and the main unit socket.
* Be sure to use the dedicated AC-230CZ AC
adapter.

OutletPower plug*D
 o not place anythingaround the power plug sothat you can unplug it fromthe outlet immediately.

Hook

SocketPower cord
Plug

Notes on using AC adapter
Even when using the AC adapter, it is recommended to insert the batteries. If you
unplug the AC adapter from the outlet or main unit without batteries inserted,the date and time will be reset. (Memory is preserved.)
START/STOP
buttonAC adapter
socketAir hose

Metal loop

Press the “Memory” button repeatedly to increase the value of the hour. Press the“START/STOP” button to confirm the hour setting and value of minute begins
flashing.

Press the “Memory” button repeatedly to choose with or without time display. Press
the “START/STOP” button to confirm time display setting.

– USING BATTERIES –Main unit

Cuff

4 Hour

7 With or without time display

INSERT THE BATTERIES AND AC ADAPTER

The device and its accessories
Make sure that the package contains all the following items.
• Blood pressure monitor unit
• Instruction manual and EMC technical data
• 4 AAA-size batteries for demonstration purpose only
• Cuff (model: SCN-012) 22 cm – 32 cm (8-3/4” – 12-1/2”)• [Option] Large Cuff (model: SCL-005) 32 cm – 42 cm (12-1/2” – 16-1/2”)/
AC adapter (model: AC-230CZ)

Air hose socket

Press the “Memory” button repeatedly to increase the value of the date. Press the“START/STOP” button to confirm the date setting and value of hour begins flashing.

Be sure to insert the batteries into the negative side with the protruding springs
first so as not to mix up the positive and negative terminals.

GENERAL REMARKS

Display

Press the “Memory” button repeatedly to increase the value of the month. Press the“START/STOP” button to confirm the month setting and value of date begins
flashing.

Time

Air hose plug

Battery cover* Time modification
When time modification, finish all time setting first and press and hold the “Memory“
button for more than 3 seconds. Then, value of the year begins flashing. Follow theabove setting operations.

ATTACH THE CUFF
1 Insert the air hose plug into the main unit.
* Do not bend the air hose during measurement,
which may cause inflation error or harmful
injury due to continuous cuff pressure.

2 Attach the cuff.
Unroll the cuff and put the end of the cuff
through the metal loop so that the side with the
Air hose plug
hook and loop fastener is on the outside.
* Be sure that the cuff size is appropriate to your arm circumference before attaching
the cuff.
* Attach the cuff over a bare arm or a thin sleeve.
* If you roll up your sleeve, your upper arm will be constricted and this affects yourresult.
* The blood pressure value is likely to differ between the right arm and left arm.
Measure your blood pressure with the same arm each day.
Loop fastener

Metal loop(1) Attach the cuff around your arm so that the blue marker comes to the palm side
and center of your arm. Adjust the position where the hem of the cuff is 0.4” 0.8”/ 1 cm - 2 cm above your elbow.
(2) Pull the end of the cuff outwards so that the cuff is snug around your arm andthen secure it with the hook and loop fastener. The appropriate tightness of
attaching cuff is that if you can readily slide a finger between the cuff and yourarm.

TIME AND DATE ADJUSTMENT
This device can store measurement results together with the time and date ofmeasurement. The clock can be displayed all the time, which is useful for remembering
to take measurement at the same time every day for managing your daily health.
* If you make measurements without setting the clock, the date and time will not berecorded in the measurement results, and only the blood pressure measurement
results are recorded in the order of measurement.

0.4" - 0.8"/
1 cm - 2 cm

1 YearAfter inserting batteries, press and hold “Memory” button for more than 3 seconds,
value of the year begins flashing. Press the “Memory” button repeatedly to increase
the value of the year. When the upper limit that can be set is exceeded, the display
returns to the lower limit value that can be set. Press the “START/STOP” button toconfirm the year setting and value of month begins flashing.

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3 Adjust your posture.

3 Delete result• Seat comfortably with your feet flat on the floor and do not cross your legs.
• Place your arm on a table or similar surface with your forearm extended.
• Position your arm so that the cuff is at the same height
as your heart.
• Place your hand so that your palm is facing upward andyour fingers are relaxed.
• Do not move your body or talk during the measurement.
• When measuring your blood pressure while lying down,
lie face up, straighten your arm and relax.

MEASURE YOUR BLOOD PRESSURE
1 Press the “START/STOP” button to start measurement.
All digits are displayed. Then the cuff begins pressurizing automatically.
icon that displays when all digits are displayed is not a battery* Thereplacement notification.
*  indicator will begin flashing when a pulse is detected.

– Deleting one result –Display the measurement result that you want to delete and then press and holdthe “Memory“ button for 4 seconds or more. When deletion is complete, “CL”
displayed on the screen changes from blinking to lit. When “CL” is lit, deletion iscomplete, so release the “Memory“ button. Do not remove the batteries while
deleting the memory.
– Deleting all results –After displaying the measurement results, press and hold the “START/STOP” button
for 4 seconds or more while holding down the “Memory“ button. When deletion iscomplete, the “ALL CL” displayed on the screen changes from blinking to lit. When
“ALL CL” is lit, deletion is complete, so release the buttons. Do not remove thebatteries while deleting the memory.

INDICATORSTROUBLESHOOTING
Troubleshooting 1
Display
No response when
you press button orload battery.

Unable to takemeasurement

2 The measurement result is displayed.
Once measurement is completed, the cuff deflates andthe measurement result is displayed. If there is no error in
the measurement result, the device stores the result
automatically.

Display* If theicon displays, the measurement result is notincluded in the average value calculation.
* If theorindicator displays in the measurement
result, please refer to “INDICATORS”.

160
140
130
120

Grade 2 Hypertension (moderate)

Normal

80

85

90

100

110 Diastolic(mmHg)

60 measurement results can be stored in memory. The average value is calculated
automatically to help you for managing your daily health.

• Do not store the product in locations exposed to direct sunlight, high temperatures,
low temperatures, high relative humidity or excessive amounts of dust. Refer to the“SPECIFICATIONS” for the detailed storage conditions.
• Make sure to store the product where children, pets cannot reach and or pests are notthere.
• Do not drop the device or the cuff and give any shocks or vibrations.
• Do not bend the cuff or the air hose excessively. The pressurization failure may result.
• Remove the batteries if the product will be left unused for a long period of time. Thereis a risk of failure due to fluid leaking from the batteries.
• Do not wash or get wet the cuff as well as avoid to get water into the air hose. The
failure may result.
• Do not clean the device or the cuff with alcohol, thinners or benzine, as this could
damage the product.
• In case the device or the cuff gets dirty, wipe off the dirt with cloth moistened with aneutral detergent, then wipe it with a dry cloth.
• It is recommended that the product is inspected every two years to ensure proper
function and performance.

Press the “Memory“ button repeatedly to see your past results. After memory
number appears, result is displayed. Each time you press the “Memory“ button, anolder result comes up.

Soft cuff (SCN-012)

Cuff circumference range

22 cm – 32 cm (8-3/4" – 12-1/2")

Measurement Pressure
range
Pulse

0 – 280 mmHg

Speaking, arm or body movement,
angry, excited or nervous during
measurement.

Possible cause

Try again when calm and without
speaking or moving during
measurement.

Consult your physician.

Solution

Accuracy

40 – 180 pulse/min

Pressure±3 mmHg

Pulse±5% of reading

Inflation

Automatic inflation by internal pump

Deflation

Automatic speed deflation system

Rated voltage

6V DC

ExhaustElectromagnetic quick exhaust valve

Power supply

4 × 1.5 V
SIZE AAA batteries (R03, LR03), AC adapter (option)(model: AC-230CZ)

Battery duration

Approx. 300 times (Alkaline), Approx. 150 times (Manganese)

Automatic power off function

Approx. 3 mins. (after activated)

Main unit dimensions

110 (W) × 47 (H) × 104 (D) mm(: direct current)

Unit

Approx. 210 g w/o batteries

Cuff

Approx. 130 g

Temperature

10°C – 40°C

Operatingconditions

Humidity

15% – 85%RH

Barometricpressure

700 hPa – 1060 hPa

Storageconditions

Temperature-20°C – 60°C

Humidity

10% – 95%RH

WeightAttach the cuff correctly and try
again.

Measurement cannot be
performed because there isexcessive pressure on the sensor.

Cuff pressure above 281 mmHg.

If the pressure does not fall
automatically during measurement,press the “START/STOP” button tostop the measurement and remove
the cuff.

Mode of operation

Continuous operation

Low battery

Change the batteries.

Memory1 × 60 readings, Average of last 3 readings

Service Life

5 years

Cuff’s Life

Approx. 2000 times

Protection against ingress of
water

IPX0

Accessories

Cuff, 4 AAA batteries for demonstration purpose, Instruction
manual and EMC technical data

Optional Accessories

Large Cuff (model:SCL-005) 32 cm – 42 cm (12-1/2”-16-1/2”),
AC adapter (model: AC-230CZ)

The device is not working properly.

Optimal

STORAGE, CLEANING AND MAINTENANCE

2 Past result

Cuff

Attach the cuff correctly and take a
deep breath and relax to takemeasurement again.

High-Normal

CALL THE MEASUREMENT RESULTS

icons are displayed, and soon, theChange the batteries.

Pulse rate is out of measurement
range. The pulse was (39 bpm orless, or 181 bpm or more).

Grade 1 Hypertension (mild)

Press “START/STOP” button to turn the device off or it will turn off automatically after
approximately 3 minutes.

Press the “Memory” button, theand theaverage value of last 3 measurements appears.

Upper arm

Low battery

Systolic (mmHg)

3 Finishing measurement.

1 Average value

Digital display type

3 WHO blood pressure classification indicator

180

Oscillometric method

Measurement localization

The pulse cannot be detected
because the cuff is not fitted
properly.

or

CHUG330

Measurement system
Display

The cuff is not properly tightened.

The blood pressure classification indicator has six levels which the grades classified
by World Health Organization (WHO).

Model number
Take out batteries, and insert allbatteries in correct direction again.

Troubleshooting 2

If a large pressure change is detected due to movement of the
body or arm during measurement, it will be displayed after themeasurement is completed.

Grade 3 Hypertension (severe)

Solution

Incorrect operation or strong
electromagnetic interference.

The device may not be able tomeasure the pulse of persons withan extremely weak pulse or
persons with arrhythmia.

2 Body movement icon
* If you feel abnormal, or when you want to stop measurement, press “START/STOP”
button, then the cuff will deflate and measurement stops.
* If pressing the “START/STOP” button does not release the air, unplug the air hoseplug from the main unit and remove the cuff from the arm.
* Pressurization in manual mode: Press and hold the “START/STOP” button andrelease it at the pressure value where you want
to stop (about 40 mmHg higher than the
maximum blood pressure) to stop the pressure
at that pressure. The pressure upper limit is 280
mmHg.

Possible cause

The cuff position was not correct or
Attach the cuff correctly and try
it was not properly tightened.
again.
Pulse is not detected.

1 Irregular heartbeat (IHB) indicator

The irregular heartbeat (IHB) indicator is displayed after
measurement ends if an irregular heartbeat is detected during
measurement.
Correct measurement may not be possible if your heartbeat
fluctuates greatly during measurement. If the irregular heartbeat
indicator is displayed, measure your blood pressure again whilerelaxed and still.
If the irregular heartbeat indicator appears frequently, consult yourphysician about your health.

SPECIFICATIONSElectric shock protection
Applied part

Please contact the local distributor.

Internal power unit/class II equipment (when using AC adapter)
Type BF (Cuff )* This device corresponds to the below standards: IEC 60601-1/EN 60601-1 (Medical electricalequipment – Part 1), IEC 60601-1-2/EN 60601-1-2 (Medical electrical equipment – Part 1-2), EN
1060-3 (Non-invasive sphygmomanometers – Part 3).
IMPORTERCITIZEN SYSTEMS EUROPE (Company name)Otto-Hirsch-Brücken 17 70329 Stuttgart, Germany (Address)
Main specifications of AC adapter
Input:
Indoor use only
100 – 240 V AC 50/60 Hz 0.12 – 0.065 A
Output:6 V DC 700 mA* Do not use in humid or wet places.
Operating temperature and humidity:
10°C – 40°C/15% – 85% RH
Storage temperature and humidity:
AC adapter plug polarity (positive tip polarity)-20°C – 60°C/10% – 95% RH
Operating pressure range:
700 hPa – 1060 hPa
Class II equipment

DISPOSING• When disposing of the device and cuff, do so properly in accordance with the local
rules and regulations for where you live.
• When disposing the battery, please help to protect natural environment by respecting
national and/or local recycling regulations.

Press the “START/STOP” button to finish memory mode.

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