ELRO FC5003 User manual

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CARBON MONOXIDE ALARM USER MANUAL
The symbols above mean that the CO Alarm is suitable for
use in domestic premises (including static caravan holiday
homes), caravans, motor caravans and boats.
Please take a few minutes to thoroughly read the user manual
before operang or servicing and familiarize yourself and your
family with its operaon. And save for future reference.
CAUTION:
This CO alarm is designed for indoor use only. Do not expose to rain
or moisture. Do not knock or drop the detector. Do not open or tamper
with the alarm as this could cause malfuncon.
The alarm will not protect against the risk of carbon monoxide
poisoning when the baery has drained.
Installaon of the alarm should not be used as a substute for
proper installaon, use and maintenance of fuel burning appliances
including appropriate venlaon and exhaust systems.
This CO alarm can only detect CO. Please do not misuse this device
as a smoke alarm or a combusble gas detector.
WARNING! - DO NOT try to repair the device, it has the risk of
electric shock or malfuncon if the device is tampered with.
Table of Contents
1. Installaon instrucons
2. Product overview
3. Understanding your CO alarm
4. What to do if the alarm sounds
5. Baery installaon/replacement
6. General maintenance
7. Carbon monoxide overview
8. Specicaon
9. Manufacturer/Customer service informaon
10. Warranty Informaon
11. Warranty card
1. Installaon instrucons:
1.1 Installaon locaon
When choosing your installation locations, make sure you
can hear the alarm from all sleeping areas. If you install
only one CO alarm in your home, install the alarm near
bedrooms. Not in the basement or furnace room. The
recommended position for the unit should be at least 1.8
meters (about 6 feet) above the floor level. The unit is
suitable for desktop placement.
CAUTION: This alarm should be installed by a competent
person.
1.2 Installaon step
The device can be installed in two ways. Installaon steps
of the rst way.
1: Drill two ф 5.0mm holes on the wall, the distance between
the centers of the two holes is 60mm, and then insert the two
provided plastic plugs into the holes.
2: Hold the bracket by hand and align the two plastic plugs
to fix them first.
3: Insert and tighten the two provided screws.
4: Put the battery into the battery box.
5: Install the alarm on the bracket.
6: Use the TEST/SILENCE button to test the device. Ensure
that the sound of the device is in alarm mode.
CAUTION:
If the device is installed on a caravan or boat, plasc plugs are not
required. Use the self-tapping screws provided to install the device in a
wooden area.
Installaon steps of the second way. 1:
Put the battery into the battery box.
2: Install the bracket on the alarm.
3: Paste 3M tape on the bracket.
4: Fix the alarm at the correct position.
5: Use the TEST/SILENCE button to test the device.
Ensure that the sound of the device is in alarm mode.
WARNING! - DO NOT install the device in direct sunlight or high
temperature environment.

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NOTE: 3M TAPE IS AN OPTION, PLEASE PURCHASE
SEPARATELY！
1.3 Recommended installaon locaons:
placement and installaon of your CO alarm.
■Place out of the reach of children. Under no circumstance
should children be allowed to handle the CO alarm.
■ Install in a bedroom or hallway located close to the
sleeping area. Take special care to verify the alarm can be
heard in sleeping areas.
■ It is recommended that a CO alarm be installed on each
level of a multilevel home.
■ Locate 1~3 meter (3.3~10feet) away from all fuel burning
appliances.
■ Placing at eye level allows for optimum monitoring of the
red and green indicator lights.
■ Insure that all vents of the unit are unobstructed.
■ Do not install in dead air spaces such as peaks of vaulted
ceilings, or gabled roofs.
■ Do not install in turbulent air from ceiling fans.
■ Do not place near fresh air vents or close to doors and
windows that open to the outside.
■Keep the CO alarm away from excessively dusty, dirty, or
greasy areas such as kitchens, garages and furnace rooms.
Dust, grease and household chemicals can affect the sensor.
■ Keep out of damp and humid areas such as the bath room.
Avoid spraying aerosols near the CO alarm.
■ Do not install in areas where the temperature is below-10
℃ or hotter than 40℃.
■ Do not place behind curtains or furniture. CO must be able to
reach the sensor for the unit to accurately detect CO.
Caravans & Boats
Caravans & boats have additional risks due to the presence of
other vehicles, engines, generators or barbecues, however this
does not change the basic guidance on locating the alarm.
Caravans & boats should have an alarm in the same room as any
fuel-burning appliance, located in accordance with advice above.
If the caravan has a single living space, one alarm is sufficient.
However, any sleeping accommodation which is in a separate
room from the fuel-burning appliance should also contain an
alarm.
The two most important considerations when positioning your
alarm are:
■ Not to place the alarm directly above a source of heat or
steam.
■ Positioning the alarm at a distance of 1-3 m from the
nearest edge of the potential source.

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The FAULT indicator (yellow LED) is used to indicate
fault or warning status of the CO alarm.
2.3 ALARM indicator
The ALARM indicator (red LED) is used to indicate alarm
status of the CO alarm.
2.4 TEST/SILENCE buon
The TEST/SILECNE button is used to test the unit. Press
and hold to enable TEST function.
2.5 Alarm sounder
The alarm sounder is used to send out CO alarm warning
and fault warning information.
2.6 LCD screen
Indicates CO concentration and alarm status.
3. Understanding your CO alarm:
3.1 Start up
When first power on, the ALARM indicator (red), FAULT
indicator (yellow) and POWER indicator (green) will flash
once in turn, and then the buzzer will sound once, LCD will
display for 4S. This is the power on
prompt.
Then the LCD screen will display the countdown of 56s,
and the POWER indicator (green) will flash once every
second. This is preheated state, 60 seconds later the
POWER indicator (green) flashing every 40 seconds
indicates the unit is functioning properly.
During the preheated state, LCD displays count down, when
the countdown is "0", the product goes into normal operation.
NOTE: The purpose of LCD full segment code display during power
on prompt is to check whether the LCD screen is good or not.
NOTE: When the LCD is fully displayed, the " " does not mean
that the baery is low, the " " does not mean that the sound is
muted, and 888ppm does not mean that there is dangerous carbon
monoxide concentraon around.
3.2 Normal operaon
The POWER indicator (green) flashing once every 40 seconds.
The LCD displays current CO concentration.
CO concentration display range: 0~999PPM. If the CO
concentration is under 23PPM, the LCD will display "0PPM".
NOTE: When the CO concentraon detects an ultra-high concentraon
and is detected for more than 30s, the LCD screen will display "---" unl
the alarm exits.
3.3 CO alarm warning
When the device detects a dangerous level of CO, the device
will emit a loud alarm pattern. The alarm signal pattern is 4
beeps followed about 2.5 seconds of silence. The ALARM
indicator (red) will flash the same pattern. This cycle repeats
as long as a dangerous CO condition exists. Alarm sensivity
seng:
Conforms to EN 50291-1:2018
30PPM Without alarm before 120 minutes 50PPM:
Alarm between 60 to 90 minutes 100PPM:
Alarm between 10 to 40 minutes
300PPM: Alarm within 3 minutes
NOTE: Refer to “4. What to do if the alarm sounds” when you hear the
sounds of the CO alarm warning.
3.4 CO alarm warning silence
During the device under CO alarm mode, pressing the
TEST/SILENCE button, it will be paused alarm sound of the
device about 10 minutes. The ALARM indictor (red) will
keep flash as CO alarm mode, it indicates the device is
running into the CO alarm silence mode.
NOTE: The audible alarm signal will reacvate about 10 minutes from
the me the TEST/SILENCE buon is operated where the concentraon
of CO surrounding the alarm remains at 50 PPM or greater.
NOTE: The audible alarm signal cannot to silence if the alarm at
concentraon above 200 PPM.
NOTE: The alarm silencing acvaon to once throughout a CO alarm
period.
WARNING!-Before enable feature of CO alarm warning silence,
you should be conrmed that the alarm is due to dangerous levels of
carbon monoxide and the dwelling should be venlated.
3.5 Low baery voltage warning
If the device chirps once every 40 seconds, with FAULT
indicator (yellow) will be flash. It indicates the battery is low.
The LCD displays always displays " ".
NOTE: When the low baery voltage warning is occur, the device has
capable of producing a CO alarm signal for at least 4 min or 30 days of
low baery voltage warning signal operaon.
NOTE: The device will not protect against the risk of carbon
monoxide poisoning when the baery has drained.
3.6 Low baery voltage warning silence
When the device is under the low battery warning, pressing
the TEST/SILENCE button, it will enter the low battery
voltage warning silence status for about 10 hours, meanwhile
it will appear " " on LCD, and FAULT indicator (yellow)
still keep flashing.

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NOTE: The silence feature of low baery voltage warning is
temporary acon to cancel warning sound eect, you need replace
the baery as soon as possible.
3.7 Fault warning
If the device chirps twice every 40 seconds with FAULT
indicator (yellow) will be flash. It indicates the CO alarm is
in malfunction condition. The LCD displays " Err ", that
means your CO alarm have no detecting function and no
respond CO.
NOTE: Maybe the sensor is missing, replace the device immediately.
Please contact us to more service.
3.8 Fault warning silence
When the device is in a fault state, press the TEST/SILENCE
button, it will enter the fault warning mute state for about 10
hours, while displaying " " on the LCD, and the FAULT
indicator (yellow) remains flashing.
NOTE: The silence feature of fault warning is a temporary acon to
cancel warning sound eect, you need replace the device as soon
as possible.
3.9 End-of-life warning
If the device chirps three times every 40 seconds with FAULT
indicator (yellow) flash 3 times and the LCD displays ‘End’.
It indicates end of life of CO alarm. You need to immediately
replace the CO alarm.
3.10 Test the device
When the device under normal operation status, you can test
the device by TEST/SILENCE button, press and hold the
TEST/SILENCE button, you should hear alarm sound
pattern (<85dB) and with a corresponding ALARM
indicator (red) flash. After the eight sound, the device will
issuing a normal alarm volume (≥85dB). Test process will
stop when release the button, but the alarm will ring for at
least two cycles. The LCD displays current CO
concentration during testing.
NOTE: Aer the TEST/SILENCE buon is enabled, the alarm sounds
and the red alarm light ashes. This does not indicate that CO is
present.
NOTE: If the device is in failure state and end of life state, the
device cannot be tested.
NOTE: Test the device every week! If at any me your device does
not perform as described, replace it immediately.
3.11 Weekly test
Recommend test the alarm weekly by pressing the
TEST/SILENCE button to ensure the normal operation of the
equipment.
3.12 Alarm memory
7 days alarm memory function.
When the device detects CO and alarms, after the device exits
the alarm, it will chirps once every 40 seconds with ALARM
indicator (red) will be flash. And when the CO concentration
<23PPM, the LCD will displays "AL".
After pressing the TEST/SILENCE button, the product will
clear the alarm memory warning, and respond to the
corresponding function of the button. Short press the button
to display the maximum CO concentration recorded on the
LCD for 4 seconds, press and hold the button to enter the test
alarm state.
Or 7 days later, the device will automatically clear the alarm
memory prompt.
NOTE: Press and hold the TEST/SILENCE buon during the display
period to clear the maximum concentraon value memorized and
enter the test alarm state.
4. What to do if the alarm sounds:
WARNING! – Actuaon of your CO alarm indicates the presence of
Carbon Monoxide (CO) which can KILL YOU. WARNING! – Acon of this
device indicates the presence of dangerous levels of CO! CO can be
fatal! If the alarm sounds:
4.1 Keep calm and open all doors and windows to increase
the rate of ventilation. Stop using all fuel-burning
appliances and ensure, if possible, that they are turned off,
e.g. for gas appliances, isolate the emergency control
valve;
4.2 If the alarm continues to be activated, then evacuate the
premises. Leave the doors and windows open, and only
reenter the building when the alarm has stopped. In multi-
occupancy and multi-storey premises, ensure that all the
occupants are alerted to the risk;
4.3 Get medical help for anyone suffering the effects of
carbon monoxide poisoning, and advise that carbon
monoxide inhalation is suspected;
4.4 Telephone the appropriate appliance servicing and/or
maintenance agency or, when necessary, the relevant fuel
supplier on their emergency number or the national Gas
Emergency Service Provider, if appropriate, so that the
source of carbon monoxide emissions can be identified
and corrected. Unless the reason for the alarm is
obviously spurious, do not use the fuel-burning appliances
again, until they have been checked and cleared for use by
a competent person according to national regulations.

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5. Baery installaon/replacement:
Once chirps with corresponding FAULT indicator (yellow
LED) flashing once every 40 seconds indicates that the
battery is
low battery, you must to replace with battery specified, please
see
“8. Specification”
To install or replace the battery in unit, please perform the
following steps:
5.1 Remove the device from the wall.
5.2 Remove the old battery and replace it with a new one.
5.3 Put the battery into the battery box.
5.4 Install the alarm back to the bracket.
5.5 Use the TEST/SILENCE button to test the alarm. If the
test alarm is normal, it means that the device can work
normally.
WARNING! - Use only the baery specied. Use of dierent baery may
have a detrimental eect on the CO alarm. A good safety measure is to
replace the baery at least once a year.
NOTE: Constant exposure to high or low humidity or temperatures
may reduce baery life.
CAUTION: Please replace new 2pcs same type baeries in the
meanme.
CAUTION: Test the alarm for correct operaon using the
TEST/SILENCE buon, whenever the baery is replaced!
6. General maintenance:
To keep your CO alarm in good working order, please follow
these simple steps:
6.1 Verify the unit's alarm sound and indicators operation by
enable the TEST/SILENCE button once a week.
6.2 Remove the unit from the wall and clean the alarm cover
and vents with a soft brush attachment once a month to
remove dust and dirt.
6.3 Never use detergents or other solvents to clean the unit.
6.4 Avoid spraying air fresheners, hair spray, or other aerosols
near the CO alarm.
6.5 Do not paint the unit. Paint will seal the vents and
interfere with the sensor's ability to detect CO. Never
attempt to disassemble the unit or clean inside. This action
will void your warranty.
6.6 As soon as possible, place the CO alarm back in its proper
location to assure continuous protection from carbon
monoxide poisoning.
6.7 When household cleaning supplies or similar
contaminants are used, the area should be ventilated.
6.8 A list of materials that may be expected to be found in
recreational vehicles that may produce vapours or gases,
e.g.
oils, cleaning fluids, polishes, paints, greases, cooking
operations, etc. which may affect the reliability of the
apparatus in the short or long term.
WARNING! - The following substances can aect the sensor and may
cause false acons: methane, propane, isobutene, isopropanol,
ethylene, benzene, toluene, ethyl acetate, hydrogen sulde, sulfur
dioxides, alcohol based products, paints, thinner, solvents,
adhesives, hair sprays, aer shaves ,perfumes and some cleaning
agents.
WARNING! - Your CO alarm will not be operaonal and will not
monitor for CO levels without baery.
WARNING! - This apparatus is designed to protect individuals from
the acute eects of carbon monoxide exposure. It will not fully
safeguard individuals with specic medical condions. If in
doubt consult a medical praconer.
7. Carbon monoxide (CO) overview:
7.1 Toxic eects
Carbon monoxide (CO) is a colourless, odourless,
nonirritating gas classified as a chemical asphyxiant and
whose toxic action is a direct result of the hypoxia produced
by a given exposure.
CO is rapidly absorbed through the lungs, diffuses across
the alveolar capillary membrane and is reversibly bound with
haemoglobin as carboxyhaemoglobin (COHb), however, a
minute amount is present in the plasma. The affinity of
haemoglobin for CO is over 200 times its affinity for oxygen.
This reduces the oxygen carrying capacity of the blood, and
has an effect on the dissociation of oxyhaemoglobin, which
further reduces the oxygen supply to the tissues. CO is
chemically unchanged in the body, and is eliminated in
expired air. The elimination is determined by the same factors
that applied during absorption. The half-life while breathing
room air is 2 h - 6,5 h depending on the initial COHb level.
If the CO level in the inhaled air is constant, the level of
COHb in the blood will approach an equilibrium (saturation)
state after several hours. However, the rate at which the
equilibrium is reached depends on many factors, e.g. lung
ventilation rate (physical activity) and alveolar capillary
transfer, cardiac parameters, blood haemoglobin
concentration, barometric pressure, oxygen and carbon
dioxide concentration in the inhaled air, but the two most
important factors in determining the COHb level are the CO
concentration and the duration of exposure.
The effects of different saturation blood COHb levels on
healthy adults are shown in Table 7.1.
Table 7.1 – Health eects of COHb blood levels on healthy adults
% COHb
Eects
0.3 – 0.7
Normal range in non-smokers due to endogenous CO
production
0.7 – 2.9
No proven physiological changes
2.9 – 4.5
Cardio-vascular changes in cardiac patients
4 – 6
Usual values observed in smokers, impairment in
psychomotor tests
7 – 10
Cardio-vascular changes in non-cardiac patients
(increased cardiac output and coronary blood flow)
10 – 20
Slight headache, weakness, potential burden on foetus

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20 – 30
Severe headache, nausea, impairment in limb movements
30 – 40
Severe headache, irritability, confusion, impairment in
visual acuity, nausea, muscular weakness, dizziness
40 – 50
Convulsions and unconsciousness
60 – 70
Coma, collapse, death
Source: U.S. Environmental Protection Agency 1984
The relationship between the CO concentration and the
duration of exposure can be calculated for a given %COHb, by
parameterising the above factors. Figure 7.1 shows examples
for a person undertaking light/moderate exercise.
Figure 7.1–Relaonship between CO concentraon and exposure me
for various %COHb (light/moderate exercise) 7.2
Chronic eects on high risk groups
Individuals with coronary artery disease exposed to low
levels of CO show reduced ability to exercise and the time
of onset of exercise-induced angina pectoris in such
patients exposed to low levels of CO is reduced.
Carbon monoxide readily crosses the placental barrier and
may endanger the normal development of the foetus.
A number of high-risk groups are particularly sensitive to
the effects of CO because of various organ impairments or
specific changes, mainly:
a) those whose oxygen carrying capacity is decreased due to
anaemia or other haemoglobin disorders;
b) those with increased oxygen needs such as those
encountered in fever, hyperthyroidism or pregnancy;
c) those with systemic hypoxia due to respiratory
insufficiency;
d) those with heart disease and any vascular insufficiency.
WHO guidance states that in order to protect non-smoking,
middle-aged and elderly population groups with documented
or latent coronary artery disease from acute ischaemic heart
attacks, and to protect the foetuses of non-smoking pregnant
women from untoward hypoxic effects, a COHb level of
2.5% should not be exceeded. The following WHO
guideline values and periods of time-weighted average
exposures have been determined in such a way that the
COHb level of 2.5% is not exceeded, even when a normal
subject engages in light or moderate exercise:
· 100 mg/m³ (90 ppm) for 15 min;
· 60 mg/m³ (50 ppm) for 30 min;
· 30 mg/m³ (25 ppm) for 1 h; ·
10 mg/m³ (10 ppm) for 8 h.
7.3 Normal COHb levels
Under normal conditions, humans typically have low
levels of COHb of between 0.3% and 0.7% present within
the body.
These levels are considered neither beneficial nor harmful.
7.4 Tobacco smoking
Tobacco smokers are exposed to significant concentrations
of CO. In cigarette smokers, the COHb concentration varies
between 5%-9%, while heavy cigar smokers may exceed
10%.
WARNING! - Exposure to high levels of carbon monoxide can be
fatal or cause permanent damage and disabilies.
WARNING! - The device may not prevent the chronic eects of
carbon monoxide exposure, and that the device will not fully
safeguard individuals at special risk.
8. Specicaon:
Model: FC5003
Product standards: EN 50291-1:2018
EN 50291-2:2019
Type of apparatus: Type B
Power supply: 3V (2*AA alkaline battery)
Recommend baery type:
Raymax LR6/GP GN15A (The normal service life is 3 years)
Raymax LR6 Premium (The normal service life is 10 years)
Sensor type: Electrochemical
Product service life: 10 years after manufacture Sensivity
seng:
Conforms to EN 50291-1:2018 standard.
30PPM： Without alarm before 120 minutes 50PPM:
Alarm between 60 to 90 minutes 100PPM:
Alarm between 10 to 40 minutes

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300PPM: Alarm within 3 minutes
Standby current: <20µA (average)
Alarm current: <50mA (average)
Operaon ambient condion: -10 ~ +40℃, 25 ~ 95%RH
Storage/Transport ambient condion: -20 ~ +50℃, 25 ~
95%RH
Alarm sound: ≥85dB(A) at 3m
Low baery warning silence: about 10 hours
Installaon locaon: ceiling, wall or desktop placement
Detecon range: Max. 40 m 2 within a room.
Size: 120*73*34.2 mm
Weight: 100 ± 5g (net)
NOTE: This CO alarm is designed to detect carbon monoxide gas
from any source of combuson. It is not designed to detect any
other gas.
During the warranty period, defective devices can be sent
to the service address given overleaf for you (postpaid). You
will then receive a new or repaired device back free. After the
warranty period has expired you still have the possibility of
sending the defective device for repair to the address given
overleaf. Repairs carried out after the warranty period must be
paid for.
In the event of misuse or improper treatment, use of force
or intervention not carried out by our authorized service
branches, the warranty is no longer valid. This warranty does
not restrict
your legal rights.
NOTE: In the event of a warranty claim, please return the ll receipt
and completed warranty card with fault descripon together with
the defecve device.
NOTE: The warranty does NOT cover the baeries supplied.
Service and contact
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possible service as quickly as possible, we ask you to consider
the following:
Go to www.elro.eu to receive a quick answer to your question.
Here you will find answers to frequently asked questions,
detailed installation videos and the most recent version of a
product manual. Can't resolve your question using the website?
Leave a question via the product page or send an email to
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