Extech Instruments CO220 Carbon Monoxide Alarm User Manual

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7 CO220-en-GB_V1.3 07/13

SetupMode



PressandholdtheSETbuttonfor2secondsfromthenormalmodeofoperationtoaccessthe

SETUPmode.

SettingYear

Whenthetwo‐digityearnumberappears,usetheSELECTbuttontoincreasetheyearvalue.

PressSETtomovetothenextsetting

SettingMonth

Whenthetwo‐digitmonthappearsontheLCDpressSELECTtoincreasethemonth.PressSETto

saveandmovetothenextsetting.

SettingDate

Whenthetwo‐digitdateappearsonLCDpressSELECTtoincreasethedate.PressSETbuttonto

saveandmovetothenextsetting.

SettingHours

Whenthetwo‐digithourappearsontheLCDpressSELECTtoincreasethehour.PressSETto

movetothenextsetting.

SettingMinutes

Whenthetwo‐digitminutesvalueappearsontheLCDpressSELECTtoincreasetheminutes.

PressSETtomovetothenextsetting.

SettingSeconds

Whenthetwo‐digitsecondsvalueappearsontheLCDpressSELECTtoincreasetheseconds.

PressSETtomovetothenextsetting(highalarmbelow).

HighCO

Alarm

IntheSETUPmode,afterthedateandtimeareset(asdetailedabove)theA‐oniconwillbe

displayedintheupperdisplay.PresstheSELECTbuttontoswitchthealarmONorOFF.See

diagrambelow.



WhenthealarmisON,presstheSETbuttontosavethesettingandmovetoCO

alarmsetting.

ThemetershowsCO

1000ppmasthedefaultalarm.TochangetheHighAlarm,pressthe

SELECTbuttontoincreasethevalue(pressandholdtheSELECTbuttontoscrollfaster).PressSET

tosaveandpressESCtoreturntothenormaloperatingmode.

Nowwhenthereadingexceedstheprogrammedlimit

themeterwillbeatoncepersecond.The

meterwillsoundthealarmuntilthereadingdoesnotexceedthealarmlimit,theuserchanges

thealarmlimitvalue,thealarmisswitchedoffasdescribedabove,orthemeterpoweris

removed.

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Extech Instruments CO220 Carbon Monoxide Alarm User Manual