3M 9900 Series Adjustingspeakervolume

Systemoperation

Apatroncounterismountedoneachlattice.Eachpatroncounterwillincrementonlyforthecorridoritisfacing.Sincethere

isalwaysonemorelatticethantherearecorridors,thepatroncounterfacingout,awayfromthesystem,willundernormal

circumstancesalwayshaveazeropatroncount.

Patroncountingissetbythetechnicianatinstallationtoeither

•Countpatronsastheyenterthroughacorridor

•Countpatronsastheyexitthroughacorridor

•Countpatronsastheyenterandcountpatronsastheyexitthroughacorridor

Eachpatroncountercountsindependently.Thereisnotadisplayforatotalrunningcountofallcorridorsforthesystemfor2–,3–,

or4–corridorsystems.Foratotalpatroncountformultiple-corridorsystems,youwillneedtorecordandaddtogetherthepatron

countsontheindividualpatroncounters.Ifthesystemisconfiguredtocountpatronsastheyenterandastheyexit,youwillneedto

dividethistotalinhalf,asthesystemis,ineffect,countingeachpatrontwice(onceastheyenter,andthenonceastheyexit).

Eachpatroncounterisbackedupbybatterypowersoitwillnotresettozeroanytimepowertothesystemisshutoff,disconnected,

orotherwiseinterrupted(forexample,apoweroutage).

Adjustingspeakervolume

Eachlatticehasaspeakerinsideitsbasethatwillmakethealarmsoundifanalarmconditionoccurs.Ifthealarmistooloudor

toosoft,thevolumemaybeadjustedmanually.

Note:Toadjustthespeakervolume,youwillneedasmall(4mm[0.16in.]maximumdiameter)flatbladescrewdriver.

1.Locatethespeakervolumeadjustmentknobinsidetheopeningforthespeakerinthelatticebasecover,nexttothespeaker.

2.Usethesmall(4mm[0.16in.]maximumdiameter)flat

bladescrewdriverintheadjustmentknobslottoturnthe

speakervolumeupordowntothedesiredlevel.

Tip:Useasecuredbooktotriggerthealarmsoyoucan

hearitasyouadjustthevolume.

Note:Adjustingthevolumemayalsoaffectthefrequency

(pitch)ofthealarmsound.

Figure4Speakervolumeadjustment

3.Confirmthatthealarmcanbeheardandissettoavolumelevelthatiseffectiveandappropriateforthelibrary.

4.Repeatforeachlattice.