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Thank you for purchasing a Sealey product. Manufactured to a high standard, this product will, if used according to these
instructions, and properly maintained, give you years of trouble free performance.
IMPORTANT: PLEASE READ THESE INSTRUCTIONS CAREFULLY. NOTE THE SAFE OPERATIONAL REQUIREMENTS, WARNINGS & CAUTIONS. USE
THE PRODUCT CORRECTLY AND WITH CARE FOR THE PURPOSE FOR WHICH IT IS INTENDED. FAILURE TO DO SO MAY CAUSE DAMAGE AND/OR
PERSONAL INJURY AND WILL INVALIDATE THE WARRANTY. KEEP THESE INSTRUCTIONS SAFE FOR FUTURE USE.
Refer to
instructions
1. SAFETY
1.1.
WHAT IS CARBON MONOXIDE?
1.1.1.
Carbon Monoxide (CO) is an insidious poison that is released when fuels are burnt. It is a colourless, odourless, tasteless gas and
therefore very difficult to detect with the human senses. CO kills hundreds of people each year and injures many more. It binds
to haemoglobin in the blood and reduces the amount of oxygen being circulated in the body. In high concentrations CO can
kill in minutes. CO is produced by the incomplete combustion of fuels such as wood, charcoal, coal, heating oil, paraffin,
petrol, natural gas, propane, butane etc.
1.1.2.
Examples of CO sources:
Running car engine in a garage, oil and gas furnaces, wood stoves, barbecues, clogged chimneys, wood and gas fireplaces, heating
boiler, gas appliances, portable generators, gas or kerosene heaters.
1.2.
SYMPTOMS OF CO POISONING
The following symptoms may be related to CO poisoning:
35ppm
The maximum allowable concentration for continuous exposure for healthy adults in any 8 hour period.
200ppm Slight headaches, fatigue, dizziness, nausea after 2-3 hours.
400ppm Frontal headaches within 1-2 hours, life threatening after 3 hours.
800ppm Dizziness, nausea and convulsions within 45 minutes, unconsciousness within 2 hours, death within 3 hours.
1600ppm Headache, dizziness and nausea within 20 minutes, death within 1 hour.
6400ppm Headache, dizziness and nausea within 1-2 minutes.
1.3.
Installing a CO alarm is only the first step towards safer living conditions. Make sure that you and the other members of your
household are familiar with the cause and effects of carbon monoxide poisoning and how to operate the CO alarm.
Test your CO alarm once a month.
9
Replace low batteries immediately.
9
Only purchase approved combustion devices.
9
Install combustion devices in the correct way and strictly follow the instructions of the manufacturer.
9
Have any installations carried out by a professional.
9
Have your installations checked by a qualified installer on a regular basis.
9
Have your chimney and any drainage cleaned every year.
9
Regularly check all combustion devices and verify if devices are free of corrosion.
9
Never use a barbecue indoors or in garages.
9
Ensure proper ventilation when using a fireplace or multiburner.
9
Always pay attention to the symptoms of Carbon Monoxide poisoning.
9
This alarm can only be used for residential applications, it is NOT suitable for use on boats, in vehicles, factories or shopping malls etc.
9
Avoid contact with organic solvents (including silicone and other adhesives), coatings, pharmaceutical, oil and high concentrations of
8
gas. This unit can not be used in environments containing corrosive gas, corrosive gas can damage the unit.
DO NOT use where there is strong wind movement.
8
DO NOT block the alarms air inlet otherwise the unit's sensitivity will be affected.
8
This unit can not bear excessive shock or vibration.
8
It will take this alarm a long time to return to its initial state after it has been used in high concentrations of gas for a long time.
8
Never open the unit, electrolyte leakage can cause damage.
8
This CO alarm is designed only to sense Carbon Monoxide from any source of combustion. It is NOT designed to detect smoke, fire
8
and other gases.
WARNING: This device is designed to protect individuals from acute effects of carbon monoxide exposure. It may not fully safeguard
‰
individuals with specific medical conditions. If in doubt, consult a medical practitioner.
2. INTRODUCTION
Certified to BS EN50291-1:2010+A1:2012. Memory feature allows the operator to detect if and when the alarm has sounded while there has
been no-one present. Front LED panel indicates low battery and fault. Powered by three AA batteries (not included). Maximum lifespan five
years.
3. SPECIFICATION
MODEL NO: ............................................................. SCMA1
Batteries (not included) .................................................3x AA
© Jack Sealey Limited
CARBON MONOXIDE ALARM
SCMA1
MODEL NO:
Original Language Version
SCMA1 Issue 2 23/06/2020
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Summary of Contents for Sealey SCMA1
- Page 1 SCMA1 MODEL NO: Thank you for purchasing a Sealey product. Manufactured to a high standard, this product will, if used according to these instructions, and properly maintained, give you years of trouble free performance. IMPORTANT: PLEASE READ THESE INSTRUCTIONS CAREFULLY. NOTE THE SAFE OPERATIONAL REQUIREMENTS, WARNINGS & CAUTIONS. USE THE PRODUCT CORRECTLY AND WITH CARE FOR THE PURPOSE FOR WHICH IT IS INTENDED.
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Page 2: Wall Mounted Installation
WALL MOUNTED INSTALLATION 6.2.1. Establish the mounting location see section 5.1.and ensure there is no electrical wiring or pipework in the area adjacent to the mounting surface. 6.2.2. Mark the two mounting hole locations and drill holes. 6.2.3. Screw the screws into the drilled holes and keep the screws out by 4mm. Hang unit on wall. 6.3. TABLE TOP INSTALLATION 6.3.1. Place alarm on a table top so that users can see the LEDs clearly. 7. OPERATION 7.1. INSTALL BATTERIES (REFER TO FIG.2) 7.1.1. The alarm is powered by 3x LR6 size AA 1.5V batteries. 7.1.2. Undo the screw and release the clip to open the battery compartment door on the rear of the detector. 7.1.3. Make sure the batteries are inserted the correct way round (see the polarity diagrams in the bottom of the compartment). 7.1.4. The red plastic indicator has to fit under the battery, the door will not shut if this is not done. SCMA1 Issue 2 23/06/2020 Original Language Version © Jack Sealey Limited... -
Page 3: Normal Operation
7.3. HOW TO TEST THE CO ALARM 7.3.1. Press the TEST button, the unit will trigger an analogue output of high CO concentration that will be detected by the MCU, thus starting alarming together with the red LED flashing, simultaneously the unit will display the simulated CO concentration with the “SPEAKER” symbol flashing, (SPEAKER symbol) see fig.4. fig.3 fig.4 NOTE: Test this alarm when the “ppm” symbol is displayed in the LCD after the batteries have been installed. Though this alarm can self-diagnose the amplifying circuit and sensor, it is recommended that you test your CO alarm once a month to ensure it is working correctly. 7.4. ALARM LOCKING fig.5 7.4.1. If the TEST button is pressed again whilst the CO alarm is sounding, the alarm will move into LOCKING status and the red LED and the green LED will flash every 10 seconds at the same time, the “SPEAKER” symbol on the LCD will disappear. The unit will not respond to any action during the 2 minute LOCKING status. If the CO concentration exceeds 300PPM in 3 minutes, the unit will start alarming, see fig.5. 7.4.2. When the CO concentration goes down to or below 5PPM the unit will stop alarming. SCMA1 Issue 2 23/06/2020 Original Language Version © Jack Sealey Limited... - Page 4 7.9.1. In normal operation with no CO gas present, when the LCD does not show “0 PPM”, you can press the TEST button down for 3 seconds until the PPM character on the LCD disappears, then release the TEST button until the LCD shows “0 PPM”. 7.9.2. Manual Zero can only be carried out under the following two conditions: A: The CO concentration on the LCD is lower than 10 PPM. fig.8 B: The first digit of the LCD shows “-”. 7.10. FAULT SIGNAL WARNING 7.10.1. The unit will self-test the amplifying circuit and sensor every 10 seconds. When there is a problem with the amplifying circuit or sensor,the unit will beep every 30 seconds along with a yellow flashing LED, the LCD will show “---”, see fig.7. Flashes every 60 seconds SCMA1 Issue 2 23/06/2020 Original Language Version © Jack Sealey Limited...
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Page 5: Maintenance
Hydrogen Methane Iso-Butane Carbon dioxide Carbon di-sulfate Hydrogen sulfide Nitrogen Oxide Nitrogen Dioxide Less than 5 Ammonia 0*** Ethyl acetate 0*** Di-chloromethane 0*** Heptane 0*** Toluene 0*** 0*** Ethanol Less than 2* Hexa-methyl di-siloxan Exposure time *:30 minutes **:40minutes ***:2hours SCMA1 Issue 2 23/06/2020 Original Language Version © Jack Sealey Limited... -
Page 6: Environment Protection
Sealey Ltd Batteries Producer Registration Number (BPRN) is BPRN00705. Note: It is our policy to continually improve products and as such we reserve the right to alter data, specifications and component parts without prior notice. Important: No Liability is accepted for incorrect use of this product. Warranty: Guarantee is 12 months from purchase date, proof of which is required for any claim. Sealey Group, Kempson Way, Suffolk Business Park, Bury St Edmunds, Suffolk. IP32 7AR 01284 757500 01284 703534 sales@sealey.co.uk www.sealey.co.uk SCMA1 Issue 2 23/06/2020 Original Language Version...