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ComDry Control System

1

Operation

1.1 Safety

W

W

WARNING!

ARNING!

ARNING!

The unit must not be splashed with or immersed in water.

The unit can restart automatically without warning following a power failure.

Do not operate the unit if the power cable or plug is damaged, risk of electrical shock.

Do not pull the plug with wet hands, risk of electrical shock.

Do not insert fingers or any objects into the air vents, rotating fans are inside.

Do not cover the unit as that can block air intake or outlet and cause a fire.

If the unit has overturned, cut the power immediately.

1.2 Introduction

1.2.1 Humidity control

The ComDry dehumidifier is equipped with a sophisticated microprocessor based control system. This, in
combination with the built-in humidity/temperature sensor in the process air inlet, makes it possible to set
both the control and presentation of the humidity to either relative humidity (RH%), dew point (Dp °C) or
absolute humidity (X gr/kg). The control system additionally checks the temperatures before and after the
heater, as well as in the wet air after the rotor. A high safety level is obtained by various temperature sensors.
Too high temperatures gives a reduction of the heater power, while excessive temperatures will make the
system issue an alarm and shut the dehumidifier down in a controlled way. For further explanation, see

2.1, Humidity

and

2.5, Functions

.

NOTE!

The dehumidifier always operates in automatic mode (moisture based operation). As default it will use

the built-in humidity/temperature sensor, as option an external sensor.

1.2.2 Fan modes

Depending on the application, the dehumidifier can be run in different process fan modes: Fan “ON”
(continuous), “INT” (INTermittent) or “DEM” (on DEMand).

For further explanation, see

2.5, Functions

.

MEN-CDCS-A1808

Operation

1

Содержание ComDry

Страница 1: ...Original instructions Supplement ComDryControlSystem Operationinstructions Valid forunits fromserial no 20001 MEN CDCS A1808 MuntersEuropeAB2018 ...

Страница 2: ...ccess the control system 6 1 11 Change the system settings 7 1 12 Reset analarm 7 1 13 Reset the counters 8 1 14 Restore the default settings 8 1 15 Service interval alarm 9 2 Menusandparameters 10 2 1 Humidity 10 2 1 1 Internal controlling sensor 11 2 1 2 Externalcontrolling sensor 11 2 2 Run time 11 2 3 Power 12 2 4 Temperature 13 2 5 Functions 14 2 5 1 Processfanmode 14 2 5 2 Humidity control a...

Страница 3: ... temperaturesensorintheprocessairinlet makesitpossibletoset boththecontrolandpresentationofthehumiditytoeitherrelativehumidity RH dewpoint Dp C or absolutehumidity Xgr kg Thecontrolsystemadditionallychecksthetemperaturesbeforeandafterthe heater aswellasinthewetairaftertherotor Ahighsafetylevelisobtainedbyvarioustemperaturesensors Toohightemperaturesgivesareductionoftheheaterpower whileexcessivetem...

Страница 4: ... Humiditymenu 4 Temperaturemenu A Alarmindicator 2 Timemenu 5 Functionsmenu B Operationindicator 3 Powermenu 6 Alarmmenu C On Offbutton Menubutton Function Up Rightbutton Enter Confirmationbutton Down Leftbutton Table1 1Menubuttonfunctions 2 Operation MEN CDCS A1808 ...

Страница 5: ...tem finish thebooting before attempting to start the dehumidifier 1 4 2 Startthedehumidifier Followthesestepstostartthedehumidifier Step Action Illustration 1 PresstheOn Offbutton C oncetostartthedehumidifier Result If themeasuredhumidityislowerthantheSetValue the greenoperatingindicator B willstarttoflash ina longon shortoff sequence Dependingon fanmodesetting theprocessfanwillrunor not Theunit i...

Страница 6: ...ngandshorton andoffperiods 2 Theunit continuestorunfora whileinordertocooldownandthen stops 1 6 Quickstop CA CA CAUTION UTION UTION Only quick stop the dehumidifier in case of anemergency Thefan stops and the heater can bevery hot which can result in damage to theheater and other components close to it Incaseofemergency stopthedehumidifierbypullingthemainsplugor ifitispermanentlyconnectedto mains ...

Страница 7: ... Themenuindicatorstopsflashing NOTE Allmenu lists arecircular Atthe end of each menu you will find EXIT Thequickest way of navigating there is to press one timeafter having entered a menu 1 9 Accesslevels Thefollowingaccesslevelsandactionsareavailableinthecontrolsystem Accesslevel Availableactions Comment ACCESS Viewallprocessingdata ACCESS Viewallprocessingdata Adjustrelevantparameters setvalueRH...

Страница 8: ...accesslevelexists If an attempttogethigheraccessismadewiththemachineswitchedoff thedisplaywillchangeto 0 0 0 0 Press fourtimesuntil ACCESS isvisibleagain NOTE Thesystem will returnto locked mode automatically after five minutes without any activity NOTE Thesystem always starts in locked mode after power up regardlessof access level priorto power loss Followthesestepstoforcethesystemintolockedmode ...

Страница 9: ...le They will not start to flash if is pressed regardlessof access level To find out if a parameteris changeable orread only see section 2 Menus and parameters 1 12 Resetanalarm Followthesestepstoresetanalarm Step Action Result Illustration 1 Writedownthealarmmessagebeforeresettingthealarm The informationcan be helpfulwhentroubleshooting 2 Wait untilthedehumidifierhas stopped Press Thedisplaychange...

Страница 10: ...atically changes back to thestored counter value 4 Confirmtheresettingwith Thecounterisreset NOTE PressingENTERwhen the display shows Rst NO will returnthe stored counter value in the display again 1 14 Restorethedefaultsettings Torestorethefactorydefaultsettingsyoumusthave one star access see1 10 Accessthecontrolsystem Followthesestepstorestoreallthedefaultfactorysettings Step Action Result Illus...

Страница 11: ... been adjusted TheTimetoservicecounter Sxxxxh countsdowntozero Whenitreacheszero thesystemissuesa soft alarm thenexttimetheunitisswitchedon Thealarmonlymakesthealarmmenusymbolflash notthe redalarmindicator and TIMEFORSERVICE isshowninthedisplay Thealarmwillnotmaketheunit stop Theunitcanstillbeoperatedasnormalwiththealarmpresent Followthesestepstochecktheserviceparametersandstoptheservicealarm Step...

Страница 12: ...thatthedehumidifierisinstand by Itwillstarttodehumidifyagain whenthehumidityisequalto orgreaterthantheSetValue Typeofhumiditycontrol relativehumidity dewpointorabsolutehumidity andunitsystem metricor imperial governsthereadingsandsettingsinthismenu See2 5 Functionsforreferenceandexplanation Displayview Description Type Settingoption Internal sensor reading READONLY D1 X1 Externalsensor reading 1 R...

Страница 13: ...itchedoff butpowered When switchedon thesystemmakesfiveattempts during20seconds tocontacttheexternalcontrollingsensor Ifthisfails thesystemrevertstotheinternalRH1 sensor Subsequentlyanyrenewedassignmentofthe externalsensorascontrolmustbecarriedoutmanually 2 2 Runtime Runtimeisregisteredaslongastheprocessairfanisoperating Itstopscountingwhentheunitisinstand bymodeorisswitchedoff Thesystemhastworunt...

Страница 14: ...mode ThecountershowstheconsumptionaswholekW hours ItisalsopossibletomonitorrealtimePower W current A andvoltage V measurementsinthismenu NOTE Resetting is always performedmanually Unplugging the unit ora power failure will not reset the kWh counter Displayview Description Type Settingoption kWhcounter RESETTABLE Yes No Real timePower READONLY Real timeCurrent Voltage READONLY 12 Menusandparameters...

Страница 15: ...t aftertheheater aswellasthewet airtemperature Wt andtheprocessairinlettemperature T1 ismeasured ThetemperatureisshownindegreesCelsiusorFahrenheit dependingonthesettingintheFunctionsmenu Displayview Description Type Settingoption Processairinlet temperature internal sensor READONLY Externalsensor 1 READONLY Reactivation temperature READONLY Wet airtemperature READONLY Reactivation inlet temperatur...

Страница 16: ...and mode thefanwillstopwhenthedesiredhumidity SetValueminus Hysteresis isreached It willstartagainwhenthesensedhumidityisequalto orgreaterthantheSet Value Thisgivesinpracticea controlwithgreaterhysteresisthan FanINT dependingon thefollowing Whenthedehumidifierhas reachedthedesiredhumiditylevel it willshifttostand byandstoptheprocess fan Aftera while internalmachineheatwillincreasethetemperatureoft...

Страница 17: ...TABLE Fan ON INT DEM Metricorimperialunits ADJUSTABLE SI IP Humidity ADJUSTABLE RH Dp Absolute humidity Unit serial no READONLY IDno ACCESSLevel ADJUSTABLE ACCESS Restoreto default settings onlypossible when dehumidifierisOFF RESETTABLE Yes orNo Mainsfrequency ADJUSTABLE 50 or60 Hz MEN CDCS A1808 Menusandparameters 15 ...

Страница 18: ...llbeshowninthedisplayandthedehumidifierwillstopafterithascooleddown Thiscantakeacoupleofminutes CA CA CAUTION UTION UTION Do not unplug the dehumidifier while it is cooling down the reason forthe alarmcan beoverheating Displayview Description Type Sourceof alarmin fulltext RESETTABLE Alarmstatus READONLY 16 Menusandparameters MEN CDCS A1808 ...

Страница 19: ...ximumanddefaulthumidityvalues 2 7 2 Servicetime Thistableshowstheminimum maximumanddefaultservicetimevalues Parameter Defaultsetting Max Min T h servicetime 4000 8000 500 Table2 2Time min maxanddefaultservicetimevalues 2 7 3 Functions ThistableshowsthedefaultsettingsandsettingoptionsoftheFunctionsmenu Parameter Defaultsetting Options Fan FanON FanINT FanDEM Unit SI metricunits IP imperialunits Dp ...

Страница 20: ...www munters com ...

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