Quest uest PowerDry 4800D DRY 150 Pro E · qu est Quest PowerDry 4800D Pro E Installation,...

Installation, Operation and Maintenance Instructions

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This manual is provided to acquaint you withthe desiccant dehumidifier so that installation,operation and maintenance can proceed suc-cessfully. Ultimate satisfaction depends on thequality of installation and a thorough under-standing of this equipment. The dehumidifieris built around tested engineering principlesand has passed a thorough inspection forquality of workmanship and function.

Installation, Operation and Maintenance Instructions

4201 Lien Rd. Phone 608-237-8400Madison, WI 53704 Toll-Free 1-866-933-7486www.QuestProtect.com [email protected]

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TS-576

02/161

Quest PowerDry 4800D Pro E:

• 3032 Pints/day AHAM• 4800CFMprocessairflow• Dries in temperatures to 140°F•Reachesdewpointsaslowas-40°F• 48”W x 120”L x 74”H•1600lbs.(Standardmachineweightonly)•480volt3-phase

• 106fullloadamps

Quest DRY 150Quest PowerDry 4800D Pro E

QuestPowerDry4800DPro E (withoutFrame)

PN 4029193

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QuestPowerDry4800DProE(withFrame)

PN 4028203

Water Removal Rates (Pints/Day)

3032 Pints 80˚F, 60% (AHAM)

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Quest PowerDry 4800D Pro E Installation, Operation and Maintenance Instructions

2www.QuestProtect.com

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Table of Contents

SafetyPrecautions.............................................3

1. Specifications..............................................4

2. Operation...................................................5

2.1HowtheQuestDry

PowerDry4800DProEWorks...................5

3. Installation..................................................5

3.1Inspection.............................................6

3.2Location................................................6

3.3Set-Up..................................................6

3.4Ducting.................................................6

3.5AvoidingSecondarydamage.................7

3.6ElectricalRequirements.........................7

4. OperationInstructions.................................7

4.1ConnectandStart-UpProcedure...........8

4.2CoolDown...........................................8

4.3ShutDownandDisconnectProcedure..8

5. ControlPanel..............................................8

5.1MainDisconnect..................................8

5.2StandbyLight........................................8

5.3PhaseOut.............................................9

5.4SelectorSwitch.....................................9

5.5Alarm....................................................9

5.6HourMeter...........................................9

6. Maintenance...............................................9

6.1GeneralMaintenance............................9

6.2Cabinet...............................................10

6.3Filter...................................................10

6.4BlowerandMotor...............................10

6.5DriveMotor........................................10

6.6RotorDriveChain...............................10

6.7Seals...................................................10

6.8DesiccantMedia.................................11

7. PanelLayout/WiringDiagram....................12

8. TroubleShooting.......................................15

9. DetailedSequenceofEvents-

ControlOperation.....................................16

10. ServiceParts..............................................17

Warranty...................................................18

SerialNo.__________________________________

PurchaseDate_____________________________

Dealer’sName_____________________________

Read the operation and maintenance instructions carefullybeforeusingthisunit.ProperadherencetotheseinstructionsisessentialtoobtainmaximumbenefitfromyourQuestPowerDry4800DProE.



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Safety PrecautionsReadtheinstallation,operationandmaintenanceinstructionscarefullybeforeinstallingandoperating thisdevice.Properadherencetotheseinstructionsisessentialtoobtainmaximumbenefitfromyour QuestPowerDry4800DProE.

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4

1. SpecificationsPart No. 4028203 (with Frame)

Part No. 4029193 (without Frame)

Power 480 VAC, 3-Phase, 106 FLA

Water 3032 pints/day @ AHAM Removal

Blower 4800 CFM Process Air Flow 2000 CFM Reactivation Air Flow

Operating -10ºF to 140ºF Range

Filters Processfiltersize:(2)20”x20”x2” Reactivationfiltersize:(1)20”x20”x2”

Duct Options Processinlet/outlet-18”HeavyDutyPVCminimum,20”HeavyDutyPVCrecommended Reactivation-18”HeavyDutyPVCminimum,20”HeavyDutyPVCrecommended

Warranty 2years: 1st year Parts and Service 2nd year Silica Gel Rotor

*Low temperature performance is dependent on reactivation air source. Supplying warmer reactivation air will significantly increase water removal.

Dimensions

Unit Width 48” Height 74” Length 120” Weight 1600 lb

Accessories

4028361 10”Flex-Duct

4028364 18”x25’,6”Pitch,HeavyDutyPVC/PolyesterDuct

4028374 18”LayFlatDuct

4035579 20”x25’,4”Pitch,HeavyDutyPVC/PolyesterDuct

4024440 Kestrel 3000 Multi-Function Air Meter

4027327 ExternalTemperaturecontrol

4020175 ExternalDehumidistat

4029003 Power Cord Grip

Air Filter Replacement

4028635 20”x20”x2”Filter



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5

2. OperationThefunctionofthedehumidifieristoremovemoisture(inthevaporstate)fromanairstream.Thisisaccomplishedbyexposingtheairtoanadsorbingmedia(desiccant)inasealedairstream(process).Afterthedesiccanthasadsorbedmoisture,itisexposedtoasecondairstreamatanelevatedtemperature(reactivation).Thiscausesthemoisturetobedrivenoutofthedesiccantpreparingitformoremoistureadsorption.Thisprocessisdoneonacontinuousbasis,providingaconstantdryingprocess.Thetwoairstreams(processandreactivation)areseparatedbyseals,whichcontactthedesiccantmedia.Figure1illustratestherelationshipofthesealsandairflowpattern.Thedehumidifierisdesignedwiththetwoairstreamsflowinginoppositedirections(counterflow)therebymaximizingtheenergyefficiencyoftheequipment.

2.1 How the Quest PowerDry 4800D Pro E WorksTheQuestPowerDry4800DProEhastwoseparateairstreamsthatrunthroughit–ProcessandReactivation(Fig.1).

Process Air Stream:

P1–4800CFMofairentersthemachine(ProcessAirInlet)and...

P2–...watervaporfromincomingairisdeposited(adsorbed)onthedesiccantwheel.

P3–4800CFMofdryairexitsthemachine(ProcessAirOutlet).

Reactivation Air Stream:

R1–2000CFMofairentersthemachine(ReactivationAirInlet)and...

R2–passesovertheheatercoils.

R3–Watervaporispickedup(desorbed)fromthedesiccantwheelbythehotairand...

R4–...2000CFMofwetairexitsthemachine(ReactivationAirOutlet).

3 InstallationProperinstallationiscriticaltotheperformanceoftheQuestPowerDry4800DProE.Followtheguidelinesbelowtomaximizeservicelifeandperformance.

Cabinet Divider and Seals

Reactivation Air Outlet

Process Air Inlet

Heater

Principle of Operation

Process Air Outlet

Desiccant Wheel

Desiccant WheelDrive and Chain

Reactivation Air Inlet

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3.1 InspectionThoroughlyinspectthemachinetoinsurenodamagehasoccurredduringshippingoronthejobsite.

3.2 LocationNote the following precautions when locating the Quest PowerDry 4800D Pro E:

ThePowerDry4800DProEisdesignedtobeusedindoorsoroutdoors.

Ifthehumidareaisverylarge,dehumidificationcanbeimprovedbyaddinganoutletducttocirculateprocessairtostagnantareas.

3.3 Set-UpWhenconditionswarranttheuseofadesiccantdehumidifier,useoneofthesetupsdescribedbelowtoachieveefficientdrying,whileavoidingsecondarydamage.ReviewSection2.1tounderstandthedesiccantdryingprocess.AlwaysensurethattheReactivationOutletductisventedtotheoutdoorstominimizethepossibilityofsecondarydamage.

Neutral Pressure Setup

Manydryingapplicationsrequireneutralpressureoperation.Inthissetup,theProcessAirInletpullsairfromtheaffectedarea(dryingchamber)andreturnsdried,processedairtotheaffectedareaviatheProcessAirOutlet.

TheReactivationAirInletandOutletarebothductedtotheoutdoors(orleftopeniftheunitissetupoutside).

Positive Pressure Setup

ForPositivePressureoperation,theProcessAirInletpullsairfromoutsidethedryingchamber,whiletheProcessAirOutletisductedintothechamber.

3.4 DuctingTheductrequirementsofthePowerDry4800DProEaremuchmorecriticalthanthoseofrefrigerant-baseddehumidifiers.ALL SUPPLY AND RETURN AIR DUCTING FOR THE PowerDry 4800D Pro E MUST BE AIR AND VAPOR TIGHT.Thisisextremelyimportantforproperperformance.Ensurethatreactivationdischargeairdoesnotentertheprocessorreactivationinlets.

Usingexcessductlengthsignificantlyreducesairflowvolumethroughduct.Thisistrueinanyapplication.Ifthejobathandneedsashortlengthofduct,cutasectiontotheappropriatelength.Ifairflowisrestrictedbyexcesslength,performancewillsuffer.Thesamecanbesaidofexcessbendsintheducting.

TwodifferentductsizesareusedonthePowerDry4800DProE.AllductingmaterialsareavailablefromTherma-StorLLC (seeaccessorieslistinSection1).

Process inlet / Reactivation inlet: 18” flex duct.

Toattachflexductstotheprocessairintake,pushthewireofthefirstfewloopsbeyondthe2holesintheductcollar.Pushthemetalrodthroughtheductandductcollarpiercingtheductintwoplaces.Tapeorahoseclampcanbeusedtocreateanairtightseal.Alternatively,theductwirecanbepushedpasttheweldbeadsontheductcollarandtheductcanbesecuredwithhoseclampsorratchetingstraps.Ifusingonlyoneinletconnection,theothercanbeleftclosed.

Process outlet: 18” flex or lay flat plastic duct.

Toattachflexductstotheprocessairoutlet,pushthewireofthefirstfewloopsbeyondthe2holesintheductcollar.Pushthemetalrodthroughtheductandductcollarpiercingtheductintwoplaces.Tapeorahoseclampcanbeusedtocreateanairtightseal.Alternatively,theductwirecanbepushedpasttheweld



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beadsontheductcollarandtheductcanbesecuredwithhoseclampsorratchetingstraps.

Whenusing18”layflatducting,slipovertheoutletcollarandzip-tieorducttapeinplace.

Reactivation outlet: 10” flex duct or lay flat.

Toattachflexducttothereactivationairoutlet,pushthewireofthefirstcoupleofloopsbeyondtheweldbeadsonanoutletcollar.Securewithhoseclamp.

3.5 Avoiding Secondary DamageTheQuestPowerDry4800DProEisapowerfultoolcapableofremovingagreatdealofwaterfrommostenvironments.Caremustbetakentoavoidsecondarydamageofover-dryingandorunexpectedcondensation.

TheQuestPowerDry4800DProEremovesvaporwaterfromtheincomingprocessairstreamandtransfersittotheoutgoingreactivationairstream.Thereactivationexhaustairishotandwet.

Takecaretopreventthereactivationexhaustairstreamfromcausingsecondarydamageduetocondensation.AlwaysensuretheQuestPowerDry4800DProEislocatedwiththereactivationoutletpointedsuchthatreactivationairwillNOTbedrawnbackintothestructure.

TheQuestPowerDry4800DProEdoesnotproduceliquidwaterinternaltothemachine.Thereisnocondensatepumpandnodrainhose.

TheQuestPowerDry4800DProEdesiccantdehumidifierwillcontinuetoremovewaterfromalreadydry,coldair.Itispossibletoover-dryobjectsandorstructures.

Caremustbetakentoavoidsecondarydamageduetoover-drying.

3.6 Electrical RequirementsA480volt,3phasepowersourceisrequiredtooperatetheQuestPowerDry4800DProE.

Alllocalandstatecodesmustbestrictlyadheredtoandgoodelectricalpracticesshouldbefollowedtoachievethebestinstallationpossible.ThePowerDry4800DProEmustbeproperlywiredtoanadequatepowersource.Seriousdamagetothemotorsandcontrolscanoccurifincorrectvoltageisapplied.

(SeeElectrical Schematicdrawinginthebackofthismanualforinternalwiring.)

4 Operating InstructionsRefertotheOperatingInstructionslabellocatednexttothecontrolpanelofyourPowerDry4800DProE.

User-suppliedpowercord,cordgrip,andbranchprotectionappropriatefortheelectricalloadmustbesupplied.SeedeviceforFLArating.

TheQuestPowerDry4800DProEdehumidifiercomescompleteandreadyforoperation.Allthatisrequiredistoprovidetheproperpowersource,propanesupply,andductconnections(describedabove).

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4.1 Connect and Start-Up Procedure1. LockoutPowerSource.

2. Wireunit480Volt3Phase.

3. VerifySelectorSwitchissettoSTANDBY.

4. EngagePowerSourceandturnMainDisconnecttoON.

5. VerifyPHASEOUTlightisoff,ifnot,re-wirepowersourcetocorrectphaseorder.

6. COOLDOWNlightwillcomeonfor5minutes.

7. SetSelectorSwitchtoRUN.

8. Setprocessdampertoobtainamaximumof1.5”watercolumnpressureasreadonpressuregauge.

4.2 Cool Down1. SetSelectorSwitchtoSTANDBY.

2. COOLDOWNlightwillcomeonfor5minutes.

3. WhenCOOLDOWNlightisoff,MainDisconnectcanbe switchedtoOFF.

FailuretofollowCOOL DOWN PROCEDUREmayresultindamagetounitduetooverheating.ALWAYS followCOOL DOWN PROCEDUREbeforeshuttingunitdown.

4.3 Shut Down & Disconnect Procedure 1. VerifyCOOLDOWNlightisnotilluminatedandCoolDownProcedurehasbeenfollowed.

2. TurnMainDisconnectSwitchtoOFF.

3. DisengagePowerSource.

4. LockOutPowerSource.

5. DisconnectPowerCable.

5 Control Panel5.1 Main DisconnectThemaindisconnectswitchespowerfromthesourcetothepanel.Powermustbedisconnectedatthesourcepriortoaccessingcontrolpanel.AccesstothecontrolpanelwithpowerappliedisONLYbyqualifiedservicepersonnelwiththeappropriatepersonalprotectiveequipment PowerispresentuptodisconnecteveninOFFposition.Disconnectpoweratthesourcebeforeopeningpanel.

5.2 Standby LightTheSTANDBYindicatorlampilluminatestoindicatethatpowerissuppliedtothecontrolpanel.



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5.3 Phase OutThePHASEOUTindicatorlampilluminatestoindicatethatthe3-phasepowerisnotcorrectlywiredintothepowersupply.Changethewiringatthepowersupplyconnectiontocorrectthephaseorder.

5.4 Selector SwitchWhentheselectorswitchismovedtothe“RUN”position,thePowerDry4800DProEstartsdehumidifying.Themachinewillcontinuetodehumidifyinallconditionsuntilthepoweristurnedoff.Nodehumidistatisprovidedtomonitorprocessinletaircondition(seeover-drywarningsection3.5).Anexternalcontrol(dehumidistat,thermostatorothercontact)canbewiredinplaceofthejumperacrossterminals3040and3042.Theexternalcontrolmustbedesignedtooperatea115VACcircuit. ThePowerDry4800DProEhasonecontroldevice,thepowerswitch.Whenthepowerswitchismovedtothe“on”positionyourportabledesiccantisdehumidifying.Themachinewillcontinuetodehumidifyinallconditionsuntilthepoweristurnedoff:Thereisnodehumidistat(seeover-drywarningsection2.2).

5.5 Alarm (Light and Horn)Thealarmindicatorlampilluminates(andhornsounds)toindicatethatafaultconditionexists.Thefaultconditionscouldbe:

•MotorOverload(processorreactivation)

•ReactivationTemperaturegreaterthan375°F

•Nodehumidification(i.e.saturatedwheel)

•Lowreactivationairflow

•Stuckheatercontactor

Anexternalalarmcanbewiredtoterminals3080(power)andX2(neutral).Thiswouldsupply115VACduringanalarmcondition.

5.6 Hour MeterThehourmeterwillrunwheneverthePowerDry4800DProEisoperating.Thishourmetermeasuresthecumulativetimeofoperationinone-tenthhourincrements.Thismeterisoftenusedtoverifyhoursonajobortoschedulemaintenance.

6 Maintenance6.1 General MaintenanceAdefinitivetimescheduleshouldbeestablishedforinspectingallrotatingpartsandcomponents.Inspectionrequirementsdependonthefrequencyofoperation,transport,andoperatingconditions.Periodicallychecktheconditionoftheairfilter,rotatingparts,andfastenerstoensuretheyaresecureandinproperworkingorder.Periodicallycheckairflowtomakesuretherearenoobstructionstoairflowinoutletorinletductwork.

Recommendedminimuminspections:

•Uponinstallation

•After1weekofoperation.

•Annuallythereafteroruponlossofperformance.

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6.2 Cabinet

Disconnect power before removing access panels.

Removepanelfastenersandpanelsfromunittoaccessinternalcomponents.Theconditionofthecabinetgasketsshouldbeobservedduringinspectionandservicingtoinsureagoodseal.Anyleaksmustbesealedandpanelssecurelyfastenedforproperdehumidifieroperation.

6.3 FilterThemaintenanceintervalforthefilterdependsdirectlyonthecleanlinessoftheairenteringthedehumidifier.Itissuggestedthataprogrambeestablishedtoassurethatthefiltersarereplacedorcleanedpriortobecomingcloggedtothepointtheycreateasystemproblem.

Threealuminum(20”x20”x2”)airfiltersmustbecheckedregularly.Twofiltersarelocatedneartheprocessairinlet.Theotheroneislocatednearthereactivationairinlet.

Washthefilterswithfreshwater.Cleanthefilterfromthedownstreamside,forcingdebristowardthefilterinlet.Drythefilterscompletelybeforeinstallingtheminunit.Replacementfilterscanbeorderedfromthefactoryorpurchasedlocallyifavailable.

DO NOToperatetheunitwithoutthefiltersorwithlesseffectivefiltersasthedesiccantwheelinsidetheunitwillbecomecloggedandrequiredisassemblytoclean.

6.4 Blower and MotorBlowerandmotorbearingsarepermanentlylubricatedanddonotrequiremaintenance.Blowerwheel-inspectwheelbladesforaccumulationofdustanddirt.Cleanthoroughlywithcompressedairandorvacuum.Thewheelshouldnotstrikethehousingortheinletring.Makesurewheelisrotatingintheproperdirection.

6.5 Drive MotorThemediadrivemotorispermanentlylubricatedandrequiresnomaintenance.

6.6 Rotor Drive ChainAspringloadedtensionerkeepsthechainsufficientlytensioned.Checkthechainforsignsofexcessivewear.Replaceasnecessary.Ifadditionaltensionisrequired,simplytightenthenutsonthetensionspringsasrequired.

6.7 SealsHightemperaturesealsseparatetheprocessandreactivationcompartments.Normally,thesealswillnotrequireserviceorreplacement.However,shoulddamageoccur,orifpoorperformanceastheresultofanairleakissuspected,thefollowinginspectionmustbeperformedtodeterminewhetherthesealsshouldbereplaced:

Inspection:

1) Turntheunitoffandremovetheaccesscovers.

2) Visuallyinspectforgapsbetweenthedesiccantmedia

andtheseals.

3) Ifsignificantgaps,wear,ordamageareobserved, thesealneedstobereplaced.



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6.8 Desiccant MediaThesilicageldesiccantmediasuppliedwiththedehumidifierwilllastindefinitelyunderidealconditions.Duetothenatureofdesiccantstheymakeverygoodfilters.Thelifeofthedesiccantisdirectlyrelatedtotheairbornecontaminatespassedthroughit.Atmosphericcontaminants,exposuretoacidicgases/orairstreams,andcontactwithpetroleumbasedairborneparticlescanreducetheefficiencyofthedesiccantmedia.Thepreferredmethodofcleaningistoblowdustoutwithcompressedair.Properfiltrationandpreventingcontactwithchemicalswillgreatlyimprovethelifeofthedesiccant.Inspectthefaceofthemediatoseethatnosurfacedamagehasoccurred.Ifdamageisnoticed,pleasecontactTherma-Storat1-800-533-7533forassistance.Therotorshouldturnsmoothlyupontheshaft,ifnotcheckthesupportbearings.

Servicing the Quest PowerDry 4800D Pro E with its high voltage circuitry presents a health hazard which could result in death, serious bodily injury, and/or property damage. Only qualified service people should service this unit.

ELECTRICAL SHOCK HAZARD: Electrical power must be present to perform some tests; these tests should be performed only by a qualified service person.

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7 Panel Layout/Wiring Diagram



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L1 L2

L1 L2 L3

1T2

1T3

1T1

FIELD DETERMINE

L1

L2

L3

1L1

1L2

1L3

#8 AWG PER PHASETYPE MTW

1CB90 DEG C COPPER

480V 3Ø 60HZ

LL1 LL2 LL3

INCOMING POWER

GND

200 AMPNON-FUSED DISCONNECT POWER DISTRIBUTION

40A

24 KW28.9FLA

HEATER A

BRANCH PROTECTION SUPPLIED

HAR

#8 AWG PER PHASETYPE MTW90 DEG C COPPER

105 FLALARGEST MOTOR 7.5HPLARGEST HEATER 24KW

2T2

2T3

2T1

FIELD DETERMINE

L1

L2

L3

2L1

2L2

2L3


2CB90 DEG C COPPER

40A

24 KW28.9FLA

HEATER B

HBR


3T2

3T3

3T1

FIELD DETERMINE

L1

L2

L3

3L1

3L2

3L3


3CB90 DEG C COPPER

40A

24 KW28.9FLA

HEATER C

HCR


4T2

4T3

4T1

FIELD DETERMINE

L1

L2

L3

4L1

4L2

4L3

PMS


OLR-P90 DEG C COPPER

7.5HP3600 RPM

PROCESS MOTOR

PMS


10.9FLA

5T2

5T3

5T1

FIELD DETERMINE

L1

L2

L3

5L1

5L2

5L3

RMS


OLR-R90 DEG C COPPER

5HP3600 RPM

REACTIVATION MOTOR

RMS


6.1FLA

XFMR350VA

480VAC

X1 X2

H1 H4

XL1

120VAC1 2

L1

L2

1

H3 H2#14 AWG MTW WHITE#14 AWG MTW RED

#14 AWG MTW GRN/YEL

TO SHEET 3 OF 3 TO SHEET 3 OF 3

XL2


(6.3-9.0A)

FU1

FU2

2A

FU3

4A

PHASE

L1

L2

L3


MONITOR

**(BY OTHERS)**

SET AT 6.3A

(9.0-12.5A)SET AT 10.9A

4

3

5

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9 Troubleshooting

Trouble Probable Fault Probable Cause Corrective Action 1. Main power off Check main power and cable 2. Main disconnect open Close or replace disconnect 3. Selector switch open Close or replace switch

Unit Stopped (fan off, no heater)

Power/Control Failure

4. Dehumidistat Repair or replace 1. Motor circuit breaker or

overload tripped Reset circuit breaker or overload

2. Contactor failure Repair or replace 3. Motor winding failure Repair or replace

Fan off (Rotor turns)

Power/Mechanical Failure

4. Fan motor failure Repair or replace 1. Excessive unconditioned make-

up air Reduce make-up air

2. Leaking ducts or air handling equipment outside controlled area

Seal leaks

3. Access opening to area not sealed

Close and seal

Excessive infiltration of humid air into the controlled area

4. Area not vapor tight Seal with paint or vapor barrier 1. Dehumidistat needs

adjustment Re-adjust

2. Improper settings Re-adjust

Faulty humidity controls

3. Defective Replace 1. Dirty filter Clean or replace 2. Obstruction at inlet, outlet or

ducting Remove obstruction

Inadequate air flow

3. Clogged desiccant media (high pressure differential across media)

Remove and replace media rotor

1. Element failure Check elements – repair or replace

2. Low / no voltage Correct power supply / breakers

Inadequate or no reactivation heat

3. Control elements failure Control set point / repair or replace

1. Air leaking into dehumidifier Replace access door gaskets Air seals and gaskets 2. Air bypassing media or leaking

seals Check media position, replace seals

1. Chain Repair or replace 2. Motor/gear box Repair or replace 3. Damaged desiccant rotor Repair or replace

Unit running but humidity rises

Ineffective desiccant media

4. Contaminated or damaged desiccant

Replace desiccant rotor



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9 Troubleshooting

Trouble Probable Fault Probable Cause Corrective Action 1. Main power off Check main power and cable 2. Main disconnect open Close or replace disconnect 3. Selector switch open Close or replace switch

Unit Stopped (fan off, no heater)

Power/Control Failure

4. Dehumidistat Repair or replace 1. Motor circuit breaker or

overload tripped Reset circuit breaker or overload

2. Contactor failure Repair or replace 3. Motor winding failure Repair or replace

Fan off (Rotor turns)

Power/Mechanical Failure

4. Fan motor failure Repair or replace 1. Excessive unconditioned make-

up air Reduce make-up air

2. Leaking ducts or air handling equipment outside controlled area

Seal leaks

3. Access opening to area not sealed

Close and seal

Excessive infiltration of humid air into the controlled area

4. Area not vapor tight Seal with paint or vapor barrier 1. Dehumidistat needs

adjustment Re-adjust

2. Improper settings Re-adjust

Faulty humidity controls

3. Defective Replace 1. Dirty filter Clean or replace 2. Obstruction at inlet, outlet or

ducting Remove obstruction

Inadequate air flow

3. Clogged desiccant media (high pressure differential across media)

Remove and replace media rotor

1. Element failure Check elements – repair or replace

2. Low / no voltage Correct power supply / breakers

Inadequate or no reactivation heat

3. Control elements failure Control set point / repair or replace

1. Air leaking into dehumidifier Replace access door gaskets Air seals and gaskets 2. Air bypassing media or leaking

seals Check media position, replace seals

1. Chain Repair or replace 2. Motor/gear box Repair or replace 3. Damaged desiccant rotor Repair or replace

Unit running but humidity rises

Ineffective desiccant media

4. Contaminated or damaged desiccant

Replace desiccant rotor

8 Troubleshooting

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10 Detailed Sequence of Events – Control Operation1. TurningonMainDisconnectatdehumidifierprovides480VAC,3phasepowertothecontrolpanel.

Powerisdistributedtobreakersforblowermotors,heatersandthecontroltransformer.Thecontroltransformersupplies115VACforcontrolsystemanddesiccantwheelmotor.PHASEOUTlamp,ifilluminated,indicatesthepowersupplyisnotconnectedcorrectly.Rewirepowersupplyasneeded.

a. STANDBYlampilluminates.

b. Rotormotorterminals,3470andX2,energizeprovidingthedesiccantmotorwith115VACpower. Desiccantwheelbeginstorotate.

c. ReactivationmotorstarterRMScontactsclose,startingthereactivationblower.

d. COOLDOWNlightilluminates,indicatingthetimedheatercooldowncyclehasstarted.

e. TimerelayTR1startsthe5minuteheatercooldowncycle.Contactsarenormallyclosed,timed open(NCTO).Followingthedelay…

I. TR1relayenergizes,openingcontactsfortheCOOLDOWNlightandreactivationblowermotorstarter(RMS).Rotormotorterminals3470andX2de-energize.

Note:ThecooldowncyclecanbeinterruptediftheRUNpositionisselectedandnoalarmconditionsarepresent.

2. SelectingtheRUNposition(selectorswitch)…

a. ProvidespowertothetemperaturecontrolTC.

b. StartrelaySRenergizes,ifnoalarmconditionsarepresent(ARrelayde-energized)

I. TimerelayTR1andCOOLDOWNlightde-energize.Runindicatorilluminates.Reactivationblowermotorstarterisenergized.PressureswitchPS1isactivatedwhenreactivationairflowreachesminimumlevel.

II. TDR2startsa20seconddelayfollowedbyenergizingProcessmotorstart(PMS),hourmeter,andTDR440sectimer.IfpressureswitchPS1wasnotactivatedinpreviousstepduetolackofairflow,Alarmrelayisenergizedandunitisnotallowedtorun.

III. Heater“A”RelayHARenergizes,ifauxiliarycontactsofthereactivationmotoroverload(RMS)areclosedandthetemperaturecontroliscallingforheat.

IV. UponTDR4reaching40seconds,remainingheatcontactorsHBRandHCRareenergized

3. Iftemperatureinreactivationheaterplenumexceeds375°F,thetemperaturecontrolTCwillcloseitsauxiliarycontact,energizingthelatchingalarmrelayAR.

a. ALARMlampilluminates.

b. Alarmhornsounds.

c. Terminals3080andX2energize.Theseterminalscanbeutilizedforanexternalalarm(1ampmaximum).

d. TimerelayTR1startsthe5minuteheatercooldowncycle.Followingthedelay…

I. TR1relayenergizes,openingcontactsfortheCOOLDOWNlightandreactivationblowermotorstarter(RMS).Rotormotorterminals3470andX2de-energize.

ResetalarmbyturningtheselectorswitchtoSTANDBY.

Probablecausesforahightemperaturefaultarereducedairflow,dirtyfilter,incorrectreactivationblowerrotation,orblowerfailure.



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4. Onafaultfromanoverloadrelay(OLR-PorOLR-R),thelatchingalarmrelay(AR)energizes.Theeffectislistedinlines3athrough3d. TurntheselectorswitchtoSTANDBY,allowingthecooldowncycletocompletebeforeturningOFFthemaindisconnect.FollowLockOut–TagOutproceduretode-energizethepowercordsupplyingthe4800.Resettheoverloadrelaylocatedinthecontrolcabinet.Closeandsecurecabinetdoor.EnergizeunitfollowingproperLockOut–TagOutprocedure. Probablecausesforafaultfromanoverloadrelayareinsufficientrestrictionofairflow(overloadingmotorbyallowingexcessiveairflow)orblower/motorfailure.

5. Onafaultfromtheinternalprocessdehumidistatthatpersistsfor20minutes,thelatchingalarmrelay(AR)energizes.Theeffectislistedinlines3athrough3d.TDR1providesa10minutedelayfortheremovalofresidualhumiditydesiccantduringstartup. ResetalarmbyturningtheselectorswitchtoSTANDBY. Probablecausesforafaultfromtheinternaldehumidistatareheaterfailureordesiccantfailure.

6. Onafaultfromastuckheatercontactor,theAlarmRelaywillenergizeandthereactivationblowerwillremainoncontinuously.TheRotorwillcontinuetoturn,buttheprocessblowerwillNOTcomeon.Shutoffpowerwiththemaindisconnectandreplacetheinoperablecontactortocleartheerror.

No dehumidistat is provided to monitor process inlet air condition (see over-dry warning section 3.5). An external control (dehumidistat, thermostat or other dry contact) can be wired in place of the jumper across terminals 1 and 3082. The external control must be designed to operate a 115 VAC circuit. Contact closure will start dehumidification. A control wired across terminals 1 and 3082 will be in series with the selector switch. Turn the selector switch to RUN to operate the dehumidifier from an external control.

9 Service Parts

Item Part No. Qty. Description

1 4027228 1 Blower,Reactivation,460V,5HP

2 4027229 1 Blower,Process,460V,7.5HP

3 4028630 1 Probe,Thermocouple,TypeJ,12”

4 4028633 3 HeatingElement,24KW

5 4020175 1 Dehumidistat

6 4028771 1 TemperatureControllerwith

ControlOutputBoard,RelaySPST

7 4028624 1 ControlBox

8 4030198 2 Fuse 2A

9 4030199 1 Fuse 4A

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Warrantor:Therma-StorLLC4201 Lien RdMadison,WI53704Telephone:1-866-933-7486

Who Is Covered:Thiswarrantyextendsonlytotheoriginalend-useroftheQuestPowerDry4800DPro E desiccantdehumidifier,andmaynotbeassignedortransferred.

One Year Warranty:Therma-StorLLCwarrantsthat,forone(1)yeartheQuestPowerDry4800DPro E desiccantdehumidifierwilloperatefreefromanydefectsinmaterialsandworkmanship,orTherma-StorLLCwill,atitsoption,repairorreplacethedefectivepart(s),freeofanycharge.End-UserResponsibilities:WarrantyservicemustbeperformedbyaServicerauthorizedbyTherma-StorLLC.Iftheend-userisunabletolocateorobtainwarrantyservicefromanauthorizedServicer,theend-usershouldcallTherma-StorLLCattheabovenumberandaskfortheTherma-StorServiceDepartment.,whichwillthenarrangeforcoveredwarrantyservice.Warrantyservicewillbeperformedduringnormalworkinghours.

Theend-usermustpresentproofofpurchase(lease)uponreQuest,byuseofthewarrantycardorotherreasonableandreliablemeans.Theend-userisresponsiblefornormalcare.Thiswarrantydoesnotcoveranydefect,malfunction,etc.resultingfrommisuse,abuse,lackofnormalcare,corrosion,freezing,tampering,modification,unauthorizedorimproperrepairorinstallation,accident,actsofnatureoranyothercausebeyondTherma-StorLLC’reasonablecontrol.

Limitations and Exclusions:IfanyQuestPowerDry4800DProEDesiccantDehumidifierpartisrepairedorreplaced,thenewpartshallbewarrantedforonlytheremainderoftheoriginalwarrantyperiodapplicablethereto(butallwarrantyperiodswillbeextendedbytheperiodoftime,ifany,thattheQuestPowerDry4800DPro EDesiccantDehumidifierisoutofservicewhileawaitingcoveredwarrantyservice).

UPONTHEEXPIRATIONOFTHEWRITTENWARRANTYAPPLICABLETOTHEQuestPowerDry4800DPro EDESICCANTDEHUMIDIFIERORANYPARTTHEREOF,ALLOTHERWARRANTIESIMPLIEDBYLAW,INCLUDINGMERCHANTABILITYANDFITNESSFORAPARTICULARPURPOSE,SHALLALSOEXPIRE.ALLWARRANTIESMADEBYTHERMA-STORLLCARESETFORTHHEREIN,ANDNOCLAIMMAYBEMADEAGAINSTTHERMA-STORLLCBASEDONANYORALWARRANTY.INNOEVENTSHALLTHERMASTORLLC,INCONNECTIONWITHTHESALE,INSTALLATION,USE,REPAIRORREPLACEMENTOFANYQuestPowerDry4800DProEDESICCANTDEHUMIDIFIERORPARTTHEREOFBELIABLEUNDERANYLEGALTHEORYFORANYSPECIAL,INDIRECTORCONSEQUENTIALDAMAGESINCLUDINGWITHOUTLIMITATIONWATERDAMAGE(THEEND-USERSHOULDTAKEPRECAUTIONSAGAINSTSAME),LOSTPROFITS,DELAY,ORLOSSOFUSEORDAMAGETOANYREALORPERSONALPROPERTY.

Somestatesdonotallowlimitationsonhowlonganimpliedwarrantylasts,andsomedonotallowtheexclusionorlimitationofincidentalorconsequentialdamages,sooneorbothoftheselimitationmaynotapplytoyou.

Legal Rights:Thiswarrantygivesyouspecificlegalrights,andyoumayalsohaveotherrightswhichvaryfromstatetostate.

Quest PowerDry 4800D Pro E Desiccant Dehumidifier Limited Warranty

Quest uest PowerDry 4800D DRY 150 Pro E · qu est Quest PowerDry 4800D Pro E Installation,...

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