Invacare IRC5P - Alarm System Testing; Power Loss Alarm Test; Low Pressure Test

SECTION 24—ALARM TEST
Perfecto
2
™
80 Part No 1148070
SECTION 24— ALARM TEST
Alarm and Sensor Tests
 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.