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Invacare IRC5PO2 Oxygen Equipment User Manual

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SECTION 24—ALARM TEST

Perfecto

2

™

80 Part No 1148070

SECTION 24— ALARM TEST

Alarm and Sensor Tests

ƽ DANGER

Topreventelectricalshock,ALWAYSdisconnectconcentratorfromelectricaloutlet

beforeservicing.

Checkalarmsperiodicallyforproperfunction.

Power Loss Alarm

Withtheunitrunning,removethelinecordfrompowersource.Thepowerlossalarm

modeshouldsoundtheaudiblealarmIMMEDIATELYorwithin30seconds.

NOTE:Withtheunitunpluggedandinoperableforashortperiodoftime,thebatteryfreecircuit

willbedrained.Ifpowerfailurealarmdoes

notsoundwithunitunpluggedandpowerswitchon,

thebatteryfreecircuitisdrained.Itwillrechargewhenunitispluggedinandswitchedon.

Low Pressure Test

NOTE:Forthisprocedure,refertoFIGURE 24.1onpage 81.

1. TherearetwoseparatefailuremodesforLowPressure:

•Lowproducttankpressure.(Pressureintankdropsbelowapresetvalue,typically

7p.s.i.).

• Failuretoreachthesetpointpressurewithinaprescribedtimelimit,orTimeout

Failure.

Test One

1. Withunitrunning,setflowatmaximumrating.

2. Whenthemainvalveswitches,pullthestemonthecompressorreliefvalveoutasfar

asitwillgoandholdit.

3. Thelowpressurealarmshouldactivatewithin30seconds.RefertoSensO

2

Alarm

Thresholdonpage 83forshutdownmode.

Test Two

1. Withunitrunning,setflowatmaximumrating.

2. Removethepressuresensortubing(tie‐wrap)fromthetopoftheproducttank(not

shown).

3. Thelowpressurealarmshouldactivatewithin30seconds.RefertoSensO

2

Alarm

Thresholdonpage 83forshutdownmode.

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