Munters ML270 - Commissioning; Settings before Start-Up; Continuous Process Air Fan Operation; Single-Stage Humidity Sensor

DehumidierML180-MLT350
5Commissioning
Priortostartingforthersttime,someoperatingparametersmustbesetinthecontrolsystem,seechapter
6.4,Operatorpanel.
Somefeaturesrequireconnectionofexternalequipment.Forwiringdetails,seethewiringdiagram.
5.1Pre-startchecks
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ARNING! ARNING!
ARNING!
Installation,adjustments,maintenanceandrepairsmustonlybecarriedoutbyqualiedpersonnelwhoare
awareoftherisksinvolvedwhenworkingwithequipmentoperatingwithhighelectricalvoltageandhighmachine
temperatures.
Beforestartingthedehumidierforthersttime,ensurethatthemainspowersupplyisisolatedfromthe
dehumidierandcarry-outthefollowingchecks:
1.CheckthattheModeswitchonthedehumidierisinthe“OFF”position,seesection6.4,Operatorpanel.
2.Checktheairintakeltersfordamageandproperxationandalsocheckthatallareasinsidetheunitare
clean.
3.Visuallyinspectallductingandductconnectionstomakesurethatallconnectionshavebeencorrectly
installedandthattherearenosignsofdamagetothesystem.Alsocheckthatallductsarefreefrom
obstaclesblockingtheairpassage.
4.Removethetoppanelandcheckthatnoneofthemaincontactbreakersintheelectricaloperatorpanel
havebeentripped.Fordetailsrefertothewiringdiagramsprovidedwiththeunit.
5.Checkthattheincomingpowersupplyvoltageiscorrectandthatthecablesarecorrectlyconnected.
6.TheML270hasa3phasefanmotorandtherotationdirectionofthefanimpellermustbecheckedafter
connectiontothepowersupply.Openthefrontpanelofthedehumidierandtakeouttheprocesslter.
Startthedehumidierandcheckthatthefanimpellerisrotating.Switchoffthedehumidierandwatch
thefanimpellerjustbeforeitstopsrotating.Checkthatitisrotatingclockwise.
7.Ifanexternalhumiditysensorisused,checkthatthesensoriscorrectlypositionedintheroomandis
correctlyconnectedtotheunit,seesection4.8,Externalhumiditysensor.
8.Settheprocessandreactivationairowdamperstothefullyopenposition.
190TGB-1034-L1604Commissioning15