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DehumidierML420-MLT1400

Appendix1Options

1.1General

TheML-seriesdehumidiersaredesignedsothatoptionalproductscanbeeasilyttedtothem.

Thisappendixcontainsinformationaboutalloptionalcongurationsandcomponentsthatcanbeadded

whenorderingMLdehumidiers.

NOTE!Voltagedropscanoccurwhenusingexcessivelylongcables.Ifthereislessthan20Vsupplyatthe

connectionpointsofthehumiditysensor(onthedehumidier),aseparaterelaycontrolledbythehumiditysensor

mustbeused.

1.2Runningtimemeter

Therunningtimemeterrecordsthetotalnumberofhoursthedehumidierhasrun.Thelasttwodigits

representapercentagepartofanhour.Therunningtimemetercannotbereset.

Example:0000475representsfourhoursand45minutes.

1.3Rotorstopalarm

Anoptionalreedswitchmomentarilysendsapulseonceperrevolutionoftherotor,i.e.onceevery8

minutes.Theswitchisactivatedbyamagnetmountedontherotortoproducea0VDCpulse.

Ifthepulsedoesnotoccurwithin10minutes,thedrivemotorandfaultwarningindicatorsashtoshowthat

afaulthasoccurred.Theunitisautomaticallyswitchedoff.

1.4Blockedlteralarm

Adifferentialpressureswitchcanbettedtotheprocessairandreactivationairlters.Whenthepressure

differentialacrossthelterexceedsthebelowpresetvalue,theswitchcloses,whichsendsamessage

(blockedlter)tothePCBcard.Theprocessairorreactivationairlterindicatorlightsuptoindicatethe

specicblockedlter.

1.5Filterbox-M5andF7

ML420-MLT1400dehumidierscanbeequippedwithexternallterboxesM5orF7.

Forinstructionsonhowtoattachthelterboxtotheprocessairinletorreactivationairinlet,refertothe

instructionssuppliedwiththedeliveryofthelterbox.

Thediagrambelowshowsthepressuredrop(Pa)acrossthelterinthelterbox.

190TGB-1035-H1604Options41

Munters MLT350 User Manual

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