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15

EN

Carbon monoxide – the silent killer

What is carbon monoxide?

Many people are killed each year, and many more suffer ill health from carbon monoxide 

(CO) poisoning. CO is an invisible, odourless, tasteless and extremely toxic gas. It is produced by 

appliances and vehicles burning fuels, such as coal, oil, natural/bottled gas, paraffin, wood, pet-

rol, diesel, charcoal etc. CO is absorbed by red blood cells in the lungs in preference to oxygen 

- this results in rapid damage to the heart and brain from oxygen starvation.

High levels of CO in a house can be caused by:

  Incorrectly or poorly installed fuel-burning appliances.

  Blocked or cracked chimneys/flues.

  Blocked vents or draught-proofing which makes areas with fuel burning appliances or 

fireplaces airtight.

  Engines of cars, lawnmowers etc. left running in confined spaces.

  Portable paraffin or gas heaters in badly ventilated rooms.

 

What happens when your CO alarm detects carbon monoxide?

When the CO alarm detects potentially dangerous levels of CO, it blinks the red alarm 

light immediately and then sounds a loud alarm if the CO persists. The 

Signal pattern

 ta-

ble on page 28 shows how the CO alarm reacts to different levels of CO gas and exposure 

time. At higher levels of CO, the alarm turns on sooner. The rate of blinking of the red LED 

indicates the level of CO. If your CO alarm sounds, follow the instructions in the section 

What to do when the alarm sounds

 

NEVER IGNORE THE ALARM!

Symptoms of CO poisoning

Approximate inhalation time  

and symptoms developed

The maximum allowable concentration for continuous exposure in any 8 h 

period according to OSHA*.

Slight headache after 1.5 h.

Slight headache, fatigue, dizziness, nausea after 2 – 3 h.

Frontal headaches within 1 – 2 hours, life threatening after 3 h, also  

maximum parts per million in flue gas (on an air free basis) according  

to US Environmental Protection Agency.

Dizziness, nausea and convulsions within 45 min.  

Unconsciousness within 2 hours. Death within 2 – 3 h.

Headache, dizziness and nausea within 20 min. Death within 1 h. 

Headache, dizziness and nausea within 5 – 10 min. Death within 25 – 30 min. 

Headache, dizziness and nausea within 1 – 2 min. Death within 10 – 15 min.

Death within 1 – 3 min.

CO (ppm*) 

concentration

35 

150

200

400 

 

800 

1600

3200

6400

12800

* ppm = parts per million 

** OSHA = Occupational Safety & Health Association

Содержание BE1555

Страница 1: ...BE1555 VISIT CO DETECTOR...

Страница 2: ...CO Sensor Blue Red Yellow Green BE1555 Medical device information 6 Installation 10 Signal pattern 11 Changing the radio key 12 Facts about carbon monoxide 14 Location and positioning 16 Monitoring t...

Страница 3: ...ystem consists of a set of wirelessly connected transmitters and receivers that are located across the home When a transmitter detects an activity it signals the Visit receiver that alerts the user wi...

Страница 4: ...ss Park Ellesmere Port Cheshire CH65 3EN UK Humidity during transportation and storage 95 non condensing Humidity during operation 15 to 95 non condensing Operating conditions This device is designed...

Страница 5: ...the alarm sounds and the CO source is unknown Note that the alarm may sound if cigarette smoke is blown into it or aerosols are released nearby Depending on the cause of the alarm the signal patterns...

Страница 6: ...radio key has been changed RADIO ALARM FAULT POWER TEST PUSH CARBON MONOXIDE ALARM RADIO ALARM FAULT POWER TEST PUSH CARBON MONOXIDE ALARM Systems with only BE1555 CO alarms Changing the radio key on...

Страница 7: ...a loud alarm if the CO persists The Signal pattern ta ble on page 28 shows how the CO alarm reacts to different levels of CO gas and exposure time At higher levels of CO the alarm turns on sooner The...

Страница 8: ...ghts Where it would be obstructed e g by curtains or furniture Directly above a sink or cooker Over heat sources such as radiators or hot air vents In an area where the temperature could drop below 10...

Страница 9: ...which is in a separate room from the combustion appliance s should also contain an alarm located in accordance with Figure 3 Choosing locations in caravans and boats It is not always possible to find...

Страница 10: ...m press and hold the test hush button The unit will respond with one of the following status conditions 1 The Green LED on the CO alarm blinks and the horn sounds to indicate the unit is powered and o...

Страница 11: ...blue Family members including pets exhibit ing the flu like symptoms of CO poison ing described above If any of these signs are present get the appliance checked out by an expert before further use If...

Страница 12: ...PLACE UNIT BY date has been reached Check the label on the side of the alarm CO alarms are not a substitute for life in surance House holders are responsible for their own insurance The CO alarm warns...

Страница 13: ...it is possible to further secure or tamperproof the alarm by using a No 2 or No 4 2 to 3mm diameter not supplied self tapping screw 6 to 8mm long to firmly lock the alarm and its mounting plate togeth...

Страница 14: ...ate Wait 15 s before testing again by pushing the test hush button Check the age of the alarm see the replace by label on the unit The CO alarm beeps when I press the test hush button but the Visit re...

Страница 15: ...n Group AB S dra L ngebergsgatan 30 436 32 Askim Sweden Phone 46 31 68 28 20 E mail info bellman com bellman com Revision BE1555_012MAN005 Date of issue 2020 05 18 TM and 2020 Bellman Symfon AB All ri...

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