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UsermanualMG50,MG90
Desiccantdehumidifier
190TGB-1004–N1402 ©MuntersEuropeAB2014
Importantuser informationIntendeduseMunters dehumidifiers are intended to be used for thedehumidification of air. Any other use of the unit, orusewhich is contrary to the instructions given in thismanual, can cause personal injury and damage to the unitand other property.
Nomodification of the unit is allowedwithout priorapproval byMunters. Attachment or installationof additional devices is only allowed afterwrittenagreement byMunters.
WarrantyThewarranty period is valid from the date the unitleft our factory, unless otherwise stated inwriting.Thewarranty is limited to a free exchange of parts orcomponentswhich have failed as a result of defects inmaterials orworkmanship.
All warranty claimsmust include proof that thefault has occurredwithin thewarranty period andthat the unit has been used in accordancewith thespecifications. All claimsmust specify the unit type andfabrication number. This information is stamped on theidentification plate, see sectionMarking.
It is a condition of thewarranty that the unit for thefull warranty period is serviced andmaintained asdescribed in sectionService andmaintenance. The serviceandmaintenancemust be documented for thewarrantyto be valid.
SafetyInformation about dangers are in thismanual indicatedby the commonhazard symbol:
WWWARNING!ARNING!ARNING!Indicatesapossibledanger that can lead topersonal injury.
CACACAUTION!UTION!UTION!Indicatesapossibledanger that can lead todamage to the
unit or other property, or causeenvironmental damage.
NOTE!Highlights supplementary information for optimaluseof theunit.
ConformitywithDirectivesThe dehumidifier is in conformitywith the essentialsafety requirements of theMachineryDirective2006/42/EC, the LowVoltageDirective 2006/95/EC,theRoHSDirective 2011/65/ECand theEMCDirective 2004/108/EC.The dehumidifier ismanufactured by an ISO9001:2008 accreditedmanufacturing organisation.
CopyrightThe contents of thismanual can be changedwithoutprior notice.
NOTE! Thismanual contains informationwhich isprotectedbycopyright laws. It is not allowed to reproduceor
transmit anypart of thismanualwithoutwritten consent from
Munters.
Please send any comments regarding thismanual to:
Munters EuropeABTechnicalDocumentationP.O. Box 1150SE- 164 26KISTASwedene-mail: [email protected]
ii Importantuser information 190TGB-1004–N1402
Tableof contentsImportantuser information .. . . . . . . . . . . . . . ii
Intendeduse .. . . . . . . . . . . . . . . . . . . . . . . . . . iiWarranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iiSafety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iiConformitywithDirectives . . . . . . . . . . . . iiCopyright . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii
Tableof contents .. . . . . . . . . . . . . . . . . . . . . . . . . . iii1 Introduction .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1 About thismanual . . . . . . . . . . . . . . . . . . . . . 11.2 Unintendeduse .. . . . . . . . . . . . . . . . . . . . . . . 11.3 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21.4 Marking .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Dehumidifierdesign .. . . . . . . . . . . . . . . . . . . . . . 42.1 Product description . . . . . . . . . . . . . . . . . . . 42.2 Principleof operation . . . . . . . . . . . . . . . . . . 4
3 Transport, inspectionandstorage .. . . . . . 53.1 Transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53.2 Packaginganddelivery inspection . . . 53.3 Storing theequipment . . . . . . . . . . . . . . . . 5
4 Installation .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64.1 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64.2 Site requirements . . . . . . . . . . . . . . . . . . . . . 64.3 Connectionof ductsandhoses .. . . . . . 74.4 Hose lengthandorificeplateaffects
theairflow .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4.5 Mounting theunit on thewall . . . . . . . . . . 84.6 Installationexamples . . . . . . . . . . . . . . . . . 10
4.6.1 Closedsystem .. . . . . . . . . . . . . . . . 104.6.2 Opensystem .. . . . . . . . . . . . . . . . . . 11
4.7 Electrical connections . . . . . . . . . . . . . . . . 124.8 Connecting thehumidistat . . . . . . . . . . . . 12
5 Operation .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135.1 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135.2 Prior to start . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135.3 Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5.3.1 Manual operation . . . . . . . . . . . . . . 145.3.2 Automatic operation . . . . . . . . . . . 14
5.4 Stop theunit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146 Serviceandmaintenance .. . . . . . . . . . . . . . . . 15
6.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156.2 Maintenanceschedule . . . . . . . . . . . . . . . . 156.3 Filter replacement . . . . . . . . . . . . . . . . . . . . . 16
7 Fault tracing .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178 Technical specification .. . . . . . . . . . . . . . . . . . . 18
8.1 Dimensionsandservice space .. . . . . . 188.2 Capacity diagrams .. . . . . . . . . . . . . . . . . . . 198.3 Fancurves .. . . . . . . . . . . . . . . . . . . . . . . . . . . . 208.4 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . 21
9 Scrapping .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2210 ContactMunters .. . . . . . . . . . . . . . . . . . . . . . . . . . . 24
190TGB-1004–N1402 Tableof contents iii
MG50&MG90
1 Introduction
1.1 About thismanualThismanual is written for the user of the dehumidifier. It contains necessary information for how to installand use the dehumidifier in a safe and efficientway. Read through themanual before the dehumidifier isinstalled and used.Contact your nearestMunters office if you have any questions regarding the installation or the use of yourdehumidifier.Thismanualmust be stored in a permanent location close to the dehumidifier.
1.2 Unintendeduse■ The dehumidifier is not intended for outdoor installation.■ The dehumidifier is not intended for use in classified areaswhere explosion safety compliant equipment
is required.■ The dehumidifiermust not be installed near any heat generating devices that can cause damage to the
equipment.
CACACAUTION!UTION!UTION!Donot sit, stand, or placeanyobjects on theunit.
1 Introduction 190TGB-1004–N1402
MG50&MG90
1.3 SafetyEverymeasure has been taken in the design andmanufacture of the dehumidifier to ensure that itmeets thesafety requirements of the directives and standards listed in theECDeclaration ofConformity.The information in thismanual shall in noway take precedence over individual responsibilities or localregulations.During operation and otherworkwith amachine it is always the responsibility of the individual to consider:■ The safety of all persons concerned.■ The safety of the unit and other property.■ The protection of the environment.
The types of dangers that are indicated in thismanual are described in section Important user information.
WWWARNING!ARNING!ARNING!- Theunitmust not besplashedwithor immersed inwater.
-All electrical installationsmust becarriedout byaqualifiedelectricianand inaccordancewith local regulations.
- Theunitmust beconnected toanearthedelectrical outlet.
-Donot connect theunit to othermains voltage thanspecifiedon the identificationplate.
-Donot operate theunit if thepowerplugor cord is damaged, riskof electrical shock.
-Donot pull theplugwithwet hands, riskof electrical shock.
-Donot insert fingersor anyother objects into theair vents, rotating fansare inside.
-Donot cover theunit as that canblockair intakeor outlet andcauseafire.
- If theunit hasoverturned, cut thepower immediately.
-AlwayscontactMunters for serviceor repair.
190TGB-1004–N1402 Introduction 2
MG50&MG90
1.4 Marking
Type MG50
Fabr. No 0214 190XXX XXXXX1 ~ 230V 50Hz
0.040 kW 0,4 kW
Max 0,440 kW
Munters Europe AB
M
IP44
Figure 1.1 Identification plate position
TypeFabr. No.
Fabr. year
0,09 kW
Max 0,74 kW
0919 190XXX XXXXX2009
MG90
00 ·· 230V 50 Hz
Made in SwedenMunters Europe ABIsa fjordsga tan 1164 26 Kis ta , Sweden
Weight: 10 kg
IP44
0,65 kW
RoHS
M
Figure 1.2 Identification plate
Explanation of "Fabr. No" on the identification plate:
09: Year ofmanufacture
19: Week ofmanufacture
190XXX:Article number
XXXXX: Serial number
3 Introduction 190TGB-1004–N1402
MG50&MG90
2 Dehumidifierdesign
2.1 ProductdescriptionThe desiccant dehumidifiers are designed to effectively dehumidify the air. Their compact form iscomprised of sections that are held togetherwith just four bolts. The fan, desiccant rotor and reactivationheater are held in their respective sectionswithout any furthermeans of attachment. One of the sectionscontains a distribution chamberwith insulated sections that provide exactly the right balance between thedehumidifying and reactivation air flows. The sturdy outer casing ismade of corrosion resistant, die-castaluminium.The electrical equipment complieswith theEN60204-1 standard. The dehumidifier ismanufacturedaccording to uniformEuropean standards and the established requirements forCE-marking.
2.2 PrincipleofoperationThe desiccant rotor is the adsorption dehumidifying component in the unit. The rotor structure iscomprised of a large number of small air channels.The desiccant rotor ismade of a compositematerial that is highly effective in attracting and retainingwatervapour. The rotor is divided in two zones. The airflow to be dehumidified,process air,passes through thelargest zone of the rotor and then leaves the rotor asdry air. Since the rotor rotates slowly, the incoming airalwaysmeets a dry zone on the rotor, thus creating a continuous dehumidification process.
The airflow that is used to dry the rotor, reactivation air, is heated. The reactivation air passes throughthe rotor in the opposite direction to the process air and leaves the rotor aswet air (warm,moist air). Thisprinciple enables the dehumidifier towork effectively, even at freezing temperatures.
1. Filter
2. Heater
3. Rotor
4. Drivemotor
5. Circuit board
6. Filter
7. Impeller
A. Reactivationair
B. Wetair
C. Processair
1
2
3
4
5
6
7
A
B
C
D
Figure 2.1 Principle of operation
D. Dryair
190TGB-1004–N1402 Dehumidifierdesign 4
MG50&MG90
3 Transport, inspectionandstorage
3.1 TransportUse the handleswhen lifting the unit.Use the original packagingwhen shipping the unit.
Figure 3.1Handles
3.2 Packaginganddelivery inspection1. Inspect the delivery and comparewith the delivery note, order confirmation or other delivery
documentation. Make sure that everything is included and nothing is damaged.2. ContactMunters immediately if the delivery is not complete in order to avoid installation delays.3. If the unit is to be put into storage prior to installation, see sectionStoring the equipment.4. Remove all packagingmaterial from the unit, andmake sure that no damage has occurred during
transportation.5. Any visible damagemust be reported inwriting toMunterswithin 5 days and prior to installation of
the unit.6. Dispose of the packagingmaterial according to local regulations.
3.3 Storing theequipmentFollow these instructions if the dehumidifier is to be stored prior to installation:■ Place the dehumidifier in an upright position on a horizontal surface.■ Re-use the packagingmaterial to provide protection for the unit.■ Protect the dehumidifier fromphysical damage.■ Store the dehumidifier under cover and protect it fromdust, frost, rain and aggressive contaminants.
5 Transport, inspectionandstorage 190TGB-1004–N1402
MG50&MG90
4 Installation
4.1 Safety
WWWARNING!ARNING!ARNING!Donot connect theunit to othermains voltage thanspecifiedon the identificationplate.
Theunitmust beconnected toanearthedelectrical outlet.
Donot operate theunit if thepowerplugor cord is damaged.
CACACAUTION!UTION!UTION!Donot sit, stand, or placeanyobjects on theunit.
4.2 Site requirementsThe dehumidifier is intended for indoor installation. Itmust be placed in an upright position inside oroutside the space to be dehumidified and at least 15 cmabove the floor.Avoid installing the dehumidifierwhere there is a risk ofwater entering the unit, or in a very dustyenvironment.For unit and service dimensions, see section 8.1,Dimensions and service space .
NOTE! It is important that the intended installation sitemeets the requirements inorder toachieve thebestpossibleperformanceand trouble-freeoperation.
Donot position thewet air side or rear side (seeFigure 4.1 ) near thewall or heat-sensitive objects.Position the dehumidifier so that there is enough room for air circulation.
1 2
Figure 4.1
1. Wet air side2. Rear side
190TGB-1004–N1402 Installation 6
MG50&MG90
4.3 ConnectionofductsandhosesFollow the instructions belowwhen attaching ducts or flexible hoses to the air connections. The process andreactivation air inlet and dry air outlet can be connected to a duct systemor be usedwith free inlet and outlet.Thewet air outletmust always be connected to a duct or hose, whichmust be fitted at a downward angle(away from the dehumidifier) so that condensation is drained.■ Duct lengthmust be kept as short as possible tominimise static pressure loss.■ All duct and hose connectionsmust be air tight and vapour tight to ensure full performance.■ Thewet air duct or hosemust bemounted at a downward angle so that condensation can be drained.
Thewet air hose or ductmust have suitable drainage at low temperatures to prevent pooling ofcondensate. Alternatively, condensation can be avoided by insulating the ductwith at least 25mmofinsulation.
■ Cover the duct opening for outdoor air withmesh to prevent birds and rodents fromentering the unit.Position the opening so that rain and snow cannot enter the duct.
■ Thewet air duct or hosemust be corrosion resistant and able towithstand temperatures up to 70 °C.■ Thewet air is normally transported outdoors. In large premiseswhere the dehumidifier is outside of the
space to be dehumidified, thewet air can be led away near the unit. Position the outlet so that thewet airdoes not blow towardsmoisture-sensitive objects.
■ Theminimumdistance between the reactivation inlet orwet air outlet and thewall is 0.5m.■ Thefilters for both process and reactivation air can be replacedwithout having to detach ducts or hoses.
CACACAUTION!UTION!UTION!If there is a riskof freezing temperatures, thewet air ductsmust be insulated.
NOTE!Noise reduction canbeachievedbyconnectingducts to thedehumidifier.
4.4 Hose lengthandorificeplateaffects theairflowWet air / reactivation airThe dehumidifier is equippedwith an orifice plate (A) in thewet air outlet. When awall pipe is connectedto the hose (see 4.5,Mounting the unit on the wall), or if the flexible hose or duct is longer than 5m (max. 10m), the orifice platemust be removed.Dry air /process airThe hose or duct for dry and process air can have a total length of 10mbefore dehumidification capacity isaffected. The connection piece (B)makes it possible to connect the dry air outlet to a hose or duct system.
7 Installation 190TGB-1004–N1402
MG50&MG90
B
A
C
Figure 4.2Connection to air ducts
A.Orificeplate forwet air (included indelivery)
B.Connectionpiece for dryair outlet (option)
C.Connectionpiece for air inlet (option)
4.5 Mounting theunit on thewallTheMGunit can bemounted on thewall in twodifferentways using awall bracket (optional equipment),seeFigure 4.3 andFigure 4.4 . This enables optimized positioning of thewet and dry air outlets tomeet anydesired requirements.■ Alternative 1: Thewet air outlet is placed near thewall on the right side of the unit.■ Alternative 2: The front of the unit is positioned against thewall so that thewet air outlet is far from the
wall on the left side of the unit.
NOTE! In bothalternative1and2, awoodblock (or similar)must beplacedbetween thewall bracket and thewall. Thewoodblock is needed toensure there is sufficient space for theair to circulatearound theunit and tomakeit possible tomount thehumidistat contact (alternative2).
190TGB-1004–N1402 Installation 8
MG50&MG90
Figure 4.3Wall-mounted unit, alternative 1 Figure 4.4Wall-mounted unit, alternative 2
A.Wall bracket (option) C.Wall pipe (option). Mountedat adownwardangle towards theoutsideof the
building.
B.Wetair hose D.Woodblock (depth30mm,width40mm, length350mm)
NOTE!Mount thewall pipewith the thinpipe facingdown toenable condensatedrainage through thepipe,seeFigure4.5 .
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�����
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�����
�����
�����
�����
����
����
����
����
����
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Figure 4.5Wall pipe
9 Installation 190TGB-1004–N1402
MG50&MG90
4.6 Installationexamples
4.6.1 Closedsystem
The air in the room is circulated through the dehumidifier.
1
Figure 4.6Closed system, dehumidifier located in the room.
1. Dehumidifier located in the room:
Thewet air outlet is connected toahoseand is thenemittedoutside
the room(outdoors). The reactivationair is taken from theoutsidevia
ahoseor duct connected toaconnectionpiece.
NOTE!Ashort hose (~0.3m)on thedryair outletcan improveair circulationandeliminate the riskofshort-circuitingdryair andprocessair.
2
Figure 4.7Closed system, dehumidifier locatedoutside the room.
2. Dehumidifier locatedoutside the room:
Theprocessair is taken from thedehumidified roomviaahoseor duct
connected toaconnectionpiece. Thedryair is emitted into the room
throughahoseconnected toaconnectionpiece.
3
Figure 4.8Closed system, dehumidifier located in the room.
3. Dehumidifier located in the room:
Thewet air outlet is connected toahoseand thewet air is emitted
outsideof the room(outdoors). The reactivationair is taken from the
dehumidified room.
Thedehumidification capacity becomes2/3of that indicated in the
diagram, seechapter8.2, Capacity diagrams.
NOTE!Ashort hose (~0.3m)on thedryair outletcan improveair circulationandeliminate the riskofshort-circuitingdryair andprocessair.
190TGB-1004–N1402 Installation 10
MG50&MG90
4.6.2 Opensystem
The space is ventilatedwith dehumidified air.
1
Figure 4.9Open system, dehumidifier locatedoutside the room.
1. Dehumidifier locatedoutside the room:
Dryair is emitted into the roomviaahoseor duct connected toa
connectionpiece.
2
Figure 4.10Open system, dehumidifier located in the room.
2. Dehumidifier located in the room:
Thewet air outlet is connected toahoseand thewet air is emitted
outside the room(outdoors). The reactivationair andprocessair are
taken into theunit via hosesor ductsandconnectionpieces. Dryair
is emitted into the roomviaaconnectionpiece.
11 Installation 190TGB-1004–N1402
MG50&MG90
4.7 Electrical connectionsIncludedwith the delivery is a 2.5m long power cablewith a plug for connection to an earthed outlet. Thevoltage and frequency are specified on the unit identification plate, see section 1.4,Marking.
4.8 Connecting thehumidistatThe dehumidifier comeswith a socket designed for the connection of a single step humidistat with lowvoltage. See the figure below. The humidistat can be ordered as an accessory.
Figure 4.11Connector for humidistat cable
The connection socket for the humidistat is located on the front of the unit.
1
Figure 4.12Humidistat connection socket (1)
Aroomhumidity sensor is to bemounted 1-1.5m above the floor. Itmust be positioned so that it is notdirectly exposed to dry air from the unit or to humid air flowing in through opening doors. Position it awayfromheat sources and direct sunlight.The humidistatmust be a single-stage humidistat and connected so that the control circuit closeswhenrelative humidity increases. The connection cablemust be screened and equippedwith a copper conductorwith aminimumcross-section area of 2 x 0.75mm2.If the unit is used togetherwith an external humidistat, operationmodeAorB can be used.ModeA:The humidistat regulates the entire dehumidifierON/OFF (standardmode).ModeB:The humidistat only regulates the reactivation heater and the fan operates continuously.ContactMunters for changing the operationmode.
190TGB-1004–N1402 Installation 12
MG50&MG90
5 Operation
5.1 Safety
WWWARNING!ARNING!ARNING!Donot operate theunit if thepowerplugor cord is damaged.
Donot insert fingersor anyother objects into theair vents.
Theunit can restart automaticallywithoutwarning followingapower failure.
CACACAUTION!UTION!UTION!Donot sit, stand, or placeanyobjects on theunit.
5.2 Prior tostartThe following checksmust be carried out before the dehumidifier is started for the first time:1. Check that the unit is correctly connected to the power source according to the identification plate, see
chapter 1.4,Marking. If a fused switch has beenfitted, the fuse data of the switchmust be checked.2. If a humidistat has been installed, the usermust check that it has been correctly positioned in the room
andhas been correctly connected to the unit, see chapter 4.8, Connecting the humidistat.
13 Operation 190TGB-1004–N1402
MG50&MG90
5.3 Start
5.3.1 Manual operation
Set themode selector switch toMAN and connect the dehumidifier to awall socket, or operate the externalcircuit breaker, and check that the unit starts.
1
Figure 5.1MAN-AUTmode selector switch (1)
5.3.2 Automatic operation
NOTE!Toenable running theunit in automaticmode, a single-stagehumidistat (option)must be installedandconnected to theunit.
1. Connect the dehumidifier to awall socket, or operate the external circuit breaker, and check that theunit starts.
2. Set themode selector switch to theAUTposition and adjust the humidistat setpoint to theminimumvalue for relative humidity (RH).
3. Slowly increase the humidistat setpoint until the dehumidifier stops. This is done to check that thehumidistat and dehumidifier are operating correctly.
NOTE!The fancancontinue to rotatewhen the reactivationheater hasbeenswitchedoff dependingon theoperationmode. More information is available in chapter 4.8,Connecting thehumidistat.
4. Adjust the humidistat setpoint to the desiredRHvalue.
5.4 Stop theunitTo stop the unit, disconnect it from the power source or use the external circuit breaker.
190TGB-1004–N1402 Operation 14
MG50&MG90
6 Serviceandmaintenance
6.1 General
WWWARNING!ARNING!ARNING!-Do not attempt to repair, dismantle or modify this unit.- Remove the mains plug from the socket before starting any maintenance work.The dehumidifier is designed for continuous use over a long period of timewith aminimal amount ofsupervision. Under normal operating conditions,maintenance requirements areminimal. The serviceinterval dependsmainly on the operational conditions andworking environment.
NOTE! It is recommended to contactMunters for serviceor repair. Operating faults canoccur if theunit ismaintained insufficiently or incorrectly.
Munters Service can offer a service plan adapted to suit the conditions of a specific installation. See contactaddresses on the back page of thismanual.
6.2 MaintenancescheduleMunters recommends the followingmaintenance schedule. The schedule contains inspection andmaintenance procedures aswell as the recommended intervals for units used under normal operating andenvironmental conditions. If the process air contains a lot of dust, preventativemaintenance should beperformed at shorter intervals than those specified below.
Inspection/maintenanceComponent
3-6months 12months
ProcessandReactivation filter. Clean thefilter cassette (1)and replace thefilterasnecessary.
Clean thefilter housingand replace thefilter
Unit housing.
Check for physical damageandclean theoutsideof theunit asnecessary.
Check for physical damageandclean theoutsideof theunit asnecessary. Checkanyline connections toensure theyareproperlyattachedand that therearenoair leaks.
Humidistat.Nocorrectiveaction/check Checksensor functionsandcalibrate if
necessary. Contact yourMuntersproductservicedepartment as required
Functionality andperformancecheck
Nocorrectiveaction/check Performacomplete functionality andperformancecheck, and replacewornparts asnecessary.
(1)Ensure that thearrowpoints toward thedehumidifierwhenchanging thefilter cassette.
Table 6.1Maintenance schedule
15 Serviceandmaintenance 190TGB-1004–N1402
MG50&MG90
6.3 Filter replacement1. Remove the filter cassette by sliding it upwards according toFigure 6.1 .2. Clean the filter holder andfit a newfilter cassette.
Figure 6.1Removing the filter cassette
190TGB-1004–N1402 Serviceandmaintenance 16
MG50&MG90
7 Fault tracing
Symptom Possiblecause Correctiveaction
Failureof theelectrical supply Checkpower supply to theunit.
Theunitwasset toautomaticmodeby
mistakewithnohumidistat connected.
Humidistat fault (automaticmode).
Set tomanual operatingmodeandcheck that thedehumidifier
starts. If theunit starts, theproblemprobably lieswith the
humidistat. Check thehumidistat by checking that the
dehumidifier startswhen thesetpoint of thehumidistat is
lowered. Reset thehumidistat setpoint after thecheck.
Calibrate thehumidistat asnecessaryor replace it.
The thermal protection in the fanmotor has
been triggered.
-Switchoff theunit anddisconnect thepower supply
-Remove theconnectionpieces for thehosesor ductsand the
filter cartridgeon theprocessand/or reactivation side.
-Check that the impellerswhicharenowaccessible rotate
freely.
Unit has stopped.
Thehigh-temperature fusehasbeen
tripped.
Check that thefilters andhosesor ductsarenot cloggedand
reset the fuse. Before the fusecanbe reset, theunitmust be
disconnected from thepower sourceand then reconnected
once it has cooled. Theprimary causesbehind triggeringof the
high-temperature fuseare:
- Fault in the reactivationairflow.
-Blockedfilter, hoseor duct.
-Blocked impeller.
Reactivation temperature is too low. Check that theorificeplate (A) is fitted.
The reactivationheater is not operating. Check that the reactivationheater isworkingbymeasuring
current consumption, seechapter8.4, Technical data.
The reactivationairflow is incorrect Check thefilter andanyhosesor ducts for leakageor blockage.
Theuseof a restricting flange in combinationwithwall pipes
canalso causean incorrect reactivationairflow.
Lossof performance:
Thedehumidifier is
in operationbut is not
controlling thehumidity.
Rotor drivemechanism fault Check through thedryair outlet that the rotor rotatesat approx.
10 revolutionsper hour.
Table 7.1 Fault tracing list
17 Fault tracing 190TGB-1004–N1402
MG50&MG90
8 Technical specification
8.1 Dimensionsandservicespace
Figure 8.1Dimensions
1. Processair inlet 3. Reactivationair inlet
2. Dryair outlet 4. Wet air outlet
NOTE!Thespecifieddimensionsandweightsapply toboth theMG50andMG90dehumidifier.
Width
(A)
Depth
(B)
Height
(C)
Diameter 1
(D)
Diameter
(E)
Service
access
area (F)
Service
access
area (G)
Weight
275mm 275mm 392mm 62,5mm 50mm 350mm 500mm 10kg
(1)Adapter availableasanoption to convert a rectangular opening toa roundone.
Table 8.1Dimensions and weight
190TGB-1004–N1402 Technical specification 18
MG50&MG90
8.2 CapacitydiagramsApproximate capacity in kg/h. For detailed information, please contact your nearestMunters location.
AB
C
80% RH
60% RH
40% RH
60% RH
80% RH
40% RH
MG50 MG90
Figure 8.2Capacity diagrams
1. Temperature, processair (°C)
2. Relativehumidity, processair (%RH)
3. Dehumidification capacity (kg/h), (moisture removal (kg/hour))
19 Technical specification 190TGB-1004–N1402
MG50&MG90
8.3 FancurvesThe fan curves are based on an air inlet temperature of 20 °C and air density of 1.2 kg/m³
Figure 8.3 Fan curves
Symbols
q: Airflow, ls,m3/h
ps: Available static pressure
1: Process air
2: Reactivation air. Without orifice plate onwet air outlet (1).
(1) The dehumidifier is deliveredwith an orifice plate on thewet air outlet.
190TGB-1004–N1402 Technical specification 20
MG50&MG90
8.4 TechnicaldataMG50 MG90
Processair(1)
Free-blowingair 50Hz (m³/h) 80 110
Free-blowingair 60Hz (m³/h) 85 120
Ratedairflow (m³/h) 50 90
Available static pressure50Hz (Pa) 100 100
Available static pressure60Hz (Pa) 120 120
Fanmotor power (kW) 0.040 0.090
Reactivationair (1)
Ratedairflow (m³/h) 12 20
Available static pressure (Pa) 50 100
Fanmotor power (kW) (2) - -
Reactivationairheater
Heater power (kW) 0.4 0.65
Temperature increaseacrossheater (°C) 97
Miscellaneousdata
Max. noise level unducted (dBA) 48 56
Drivemotor power (W) 5
IECprotective class (casing) IP44
IECprotective class (electric panel) IP54
Fanmotorwinding insulation class ClassB
Drivemotorwinding insulation class ClassB
Rotor type HPS
Environmental conditions
Operating temperature (°C) -20... +40
Maximum installationaltitude, abovesea level (m) 2000
Transport andstorage temperature (°C) -20... +70
(1)Figuresquotedarebasedon fan inlet temperatureof 20°C, andanair density of 1,2 kg/m3
(2)Commonmotor for processand reactivation fans
Table 8.2 Technical data
Totalpower, voltageandcurrent
Unit MG50 MG90
Voltage (V) 115 200 230 240 115 200 230 240
Frequency (Hz) 50-60 50-60 50-60 50-60 50-60 50-60 50-60 50-60
Total power (W) 440 440 440 440 740 740 740 740
Current (A) 3,8 2,2 1,9 1,8 6,4 3,7 3,2 3,1
Table 8.3 Power, voltage and current
21 Technical specification 190TGB-1004–N1402
MG50&MG90
9 ScrappingThe unitmust be scrapped in accordancewith applicable legal requirements and regulations. Contact yourlocal authorities.The rotormaterial is not combustible, and should be deposited like glass fibrematerials.If the rotor has been exposed to chemicals that are dangerous to the environment the riskmust be assessed.The chemicals can accumulate in the rotormaterial. Take the necessary precautions to complywithapplicable legal requirements and regulations.
WWWARNING!ARNING!ARNING!If the rotor is tobecut in pieces,wearasuitableCEmarked facemaskselectedandfitted inaccordancewith theapplicable safety standards toprotect from thedust.
190TGB-1004–N1402 Scrapping 22
MG50&MG90
10 ContactMuntersAUSTRIA MuntersGmbH
AirTreatmentZweigniederlassungWien
Eduard-Kittenberger-Gasse56,Obj. 6A-1235Wien
Tel: +4316164298–[email protected]
BELGIUM MuntersBelgiumnvAir Treatment
Blarenberglaan21cB-2800Mechelen
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DENMARK MuntersA/SAir Treatment
Ryttermarken4DK-3520Farum
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FINLAND MuntersFinlandOyKuivaajamyynti
Hakamäenkuja3FI-01510VANTAA
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FRANCE MuntersFranceSASAir Treatment
106,BoulevardHéloiseF-95815ArgenteuilCedex
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GERMANY MuntersGmbHAirTreatment-Zentrale
Hans-Duncker-Str. 8D-21035Hamburg
Tel: +49 (0) 40879690 [email protected]
ITALY Munters ItalyS.p.AAir Treatment
StradaPiani 2I-18027ChiusavecchiaIM
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NETHERLANDS MuntersVochtbeheersing Energieweg69NL-2404HEAlphena/dRijn
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ul. Swietojanska55/1181-391Gdynia
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POBox1150S-16426Kista
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Glattalstr. 501CH-8153Rümlang
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UNITEDKINGDOM MuntersLtdAir Treatment
PathfinderPlace10RamsayCourtHinchingbrookeBusinessParkHuntingdonPE296FYCambs
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BRAZIL Tel: +551150540150www.munters.com.br
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190TGB-1004–N1402 ContactMunters 24
www.munters.com
