Munters ML1350 - Airflow Check and Adjustment

DehumidierML420-MLT1400
5Commissioning
TheML420-MLT1400dehumidiershaveseveralstandardfunctionsthatneedtobesetbeforeinitial
start-up.Someofthefunctionsrequireconnectiontoexternalequipment.
Somefeaturesrequireconnectionofexternalequipment.Forwiringdetails,seethewiringdiagram.
5.1Settingsbeforestart-up
5.1.1Continuousprocessairfanoperation
Standardsettingsautomaticallyactivatetheprocessairfanonlywhendehumidicationisrequired.
However,continuousprocessairowcanbedesirableevenwhendehumidicationisnotrequired.
Continuousprocessairowcanbeset,seethewiringdiagram.
5.1.2Single-stagehumiditysensor
NOTE!Whennohumiditysensorisconnected,thedehumidierwillrunatmaximumeffectcontinuously.
Ifasingle-stagehumiditysensoristted,thiswillswitchthedehumidieronandoff.Asingle-stage
humiditysensorisconnectedaccordingtothewiringdiagram.
Tomaintainaircirculation,preselectcontinuousoperationoftheprocessairfaneventhough
dehumidicationisnotrequired.Forfurtherinformation,seesection5.1.1,Continuousprocessairfanoperation.
5.1.3Two-stagehumiditysensor
NOTE!Whennohumiditysensorisconnected,thedehumidierwillrunatmaximumeffectcontinuously.
Ifatwo-stagehumiditysensorisconnected,thiswillcontrolthereactivationheaterintwostages.The
reactivationpoweriscontrolledonthebasisofthehumiditysensorreadingandthesetpoint.Atwo-stage
humiditysensorisconnectedaccordingtothewiringdiagram.
Tomaintainaircirculation,preselectcontinuousoperationoftheprocessairfaneventhough
dehumidicationisnotrequired.Forfurtherinformation,seesection5.1.1,Continuousprocessairfanoperation.
5.1.4Remotefaultindication
ThePCBdisplaycanbeusedforageneralindicationofthefollowingfaultsonthedehumidier:
■Processairfan
■Reactivationairfan
■Drivemotor
■Heater
■Auxiliaryequipmentinput
■Rotorhasstopped(ifthisoptionisinstalled)
■Blockedprocessairlter(ifthisoptionisinstalled)
■Blockedreactivationairlter(ifthisoptionisinstalled)
190TGB-1035-H1604Commissioning15