Munters MX2E Owner's manual

Originalinstructions

Usermanual

MX²30–95E

Desiccantdehumidiﬁer

withelectricheaterforreactivation

Appliestoallunitsmanufactured

fromweek01,2015.

190TEN–1088–G1412 ©MuntersEuropeAB2015

Importantuserinformation

Intendeduse

Munters dehumidiﬁers are intended to be used for the

dehumidiﬁcationofair.Anyotheruseoftheunit,or

use which is contrary to the instructions given in this

manual, can cause personal injury and damage to the unit

and other proper ty.

No modiﬁcation of the unit is allowed without prior

approvalby Munters. Attachment or installation

of additional devic es is only allowed after written

agreement by Munters.

Warranty

Thewarrantyp

eriodisvalidfromthedatetheunit

left our f acto

ry, unless otherw ise stated in writing.

Thewarranty

is limited to a free exchange of parts or

components w

hich have failed as a result of defects in

materials o

rworkmanship.

All war ranty claims must include proof that the

fault has occurred within the warranty period an d

that the u n it has been used in accordance with the

speciﬁcations. All claims must specify the unit type and

fabrication number. This infor m ation is stamped on the

identiﬁcation plate, see section Marking.

It is a condition of the war ranty that the unit for the full

warranty period is serviced and maintained by a qualiﬁed

Munters engineer or Munter s approved engineer.

Access to speciﬁc and calibrated test equipmen t is

necessary. The service and maintenance must be

documented for the warranty to be valid.

Alway s contact Munters for ser vic e or repair. Operating

faults can o ccur if the unit is maintained insufﬁciently or

incorrectly.

Safety

Information about dangers are in this manual indicated

by the common hazard symbol:

WARNING!

Indicatesapossibledangerthatcanleadtopersonalinjury.

CAUTIO N!

Indicatesapossibledangerthatcanleadtodamagetothe

unitorotherproperty,orc auseenvironmentaldamage.

NOTE!

Highlightssupplementaryinformationforoptimal

useoftheunit.

ConformitywithDirectives

The dehumidiﬁer is in conformity with the essential

safety requirements of the Machinery Directive

2006/42/EC, and in conformity with the provisions

of the Ecodesign Directive (ErP) 2009/125/EC, the

Ecodesign Directive for electric motors 2005/32/EC

and of the EMC Directive 2014/30/EU. The

dehumidiﬁer is manufactured by an organization

certiﬁed according to ISO 9001 and ISO 14001.

Copyright

The contents of this manual can be changed without

prior notice.

NOTE!

Thismanualcontainsinformationwhichis

protectedbycopyrightlaws. Itisnotallowedtoreproduceor

transmitanypartofthismanualwithoutwrittenconsentfrom

Munters.

Please send any co mments regarding this manual to:

Munters Euro pe AB

Technical Documentation

P.O. Box 1150

SE- 164 26 KISTA Sweden

e-mail: t-doc@munters.se

ii

Importantuserinformation

190TE N–1088–G141 2

Tableofcontents

Importantuserinformation ............... ii

Intendeduse ...........................

ii

Warranty ...............................

ii

Safety ..................................

ii

ConformitywithDirectives ............

ii

Copyright ..............................

ii

Tableofcontents ........................... iii

1 Introduction ................................. 1

1.1 General ................................

1

1.2 Aboutthismanual .....................

1

1.3 Safetyandcautions ...................

1

1.3.1 Safetylabels ...................

2

1.4 Operationmonitoring .................

2

1.5 Applicationlimitations .................

3

1.6 Faultindications .......................

3

1.7 Marking ................................

4

1.7.1 Identiﬁcationplate .............

4

1.7.2 Pressuretestpoints ...........

4

2 Dehumidiﬁerdesign ....................... 5

2.1 Productdescription ...................

5

2.2 Principleofoperation ..................

5

2.3 Maincomponents,MX²30 ............

7

2.4 Maincomponents,MX²35–95 .......

9

2.5 Hightemperaturecut-out .............

11

2.6 Conﬁgurationfeatures ................

12

2.6.1 Insulatedprocessairinlet .....

12

2.6.2 Processfancontrol ............

12

2.6.3 Bypassdamper ................

13

2.6.4 EnergyRecoveryPurgeand

EnergyEfﬁciencyPurge .......

14

2.6.5 LowDewpointPurge ..........

15

2.6.6 Pre-reactivationheater ........

16

3 Installation ................................... 18

3.1 Safety ..................................

18

3.2 Movingthedehumidiﬁer ..............

18

3.3 Inspectionofdelivery ..................

18

3.4 Storingthedehumidiﬁer ..............

19

3.5 Siterequirements .....................

19

3.6 Foundation ............................

20

3.7 Ductinstallation .......................

21

3.7.1 Generalrecommendations ...

21

3.7.2 Ductforoutdoorairinlet .......

22

3.7.3 Ductforwetairoutlet ...........

22

3.7.4 Ductconnectiondimensions,

airinlets ........................ 23

3.7.6 Ductconnectiondimensions

(unitwithoutprocessfan) ......

24

3.7.7 Ductconnectiondimensions,

processfan ....................

25

3.7.8 Ductconnectiondimensions,

reactivationfan ................ 26

3.8 Hotwatercoilforpre-reactivation

heater ..................................

27

3.9 Steamcoilforpre-reactivation

heater ..................................

28

3.9.1 Componentsforsteam

pre-reactivationheater ........

31

3.9.2 Steamquality ..................

32

3.10 Electricalconnections ................

33

3.11 Externalhumiditytransmitter .........

33

4 Commissioning ............................. 34

4.1 Pre-startchecks ....................... 34

4.2 Airﬂowadjustment ....................

34

4.2.1 General .........................

34

4.2.2 Settingtheratedairﬂows ......

35

4.2.3 Readjustingtheairﬂow ........

35

4.2.4 Baseconﬁgurationsettings ...

36

4.3 Set-upandtestofpre-reactivation

heater ..................................

37

4.3.1 Hotwatercoil ...................

37

4.3.2 Steamcoil ......................

37

5 Operation .................................... 38

5.1 Controlpanel ..........................

38

5.2 General ................................

39

5.3 Safety ..................................

39

5.4 Quickstop ..............................

39

5.5 Operatingtheunit .....................

40

5.5.1 Initialstart-up,Manualmode

(MAN) ...........................

40

190TEN–1088–G1412

Tableofcontents

iii

5.5.2 Initialstart-up,Automaticmode

(AUTO)–regulatingtoset

point ............................

40

6 Serviceandmaintenance ................. 41

6.1 Safety ..................................

41

6.2 Regularserviceandmaintenance ...

41

6.3 Serviceoptions ........................

42

6.4 Extendedwarranty ....................

42

6.5 Serviceindicatorlamp ................

42

6.6 Serviceandmaintenanceschedule

(0–24000hours) .......................

43

6.7 Serviceandmaintenanceschedule

(28000–48000hours) .................

44

6.8 Airﬁlterreplacement ..................

45

6.9 Hotwatercoilforpre-reactivation

heater .................................. 47

6.10 Steamcoilforpre-reactivation

heater ..................................

48

7 Faulttracing ................................. 49

7.1 Safety ..................................

49

7.2 Faulttracinglist,dehumidiﬁer ........

50

7.3 Faulttracinglist,steam

pre-reactivationheater ................

52

8 Technicalspeciﬁcation .................... 53

8.1 Capacitydiagrams ....................

53

8.2 Noisedata ............................. 55

8.2.1 Noisetoroom ..................

55

8.2.2 Noiseinducts ..................

57

8.3 Dimensionsandservicespace ......

59

8.3.1 Dimensions ....................

59

8.3.2 Dimensions(unitwithout

processfan) ....................

60

8.3.3 Servicespace ..................

63

8.4 Technicaldata .........................

64

8.5 Technicaldata,

steampre-reactivationheater ........

66

9 Scrapping .................................... 67

10 ContactMunters ............................ 68

iv

Tableofcontents

190TE N–1088–G141 2

1 Introduction

1.1 General

Munters manufactures a w ide range of e fﬁcient dehumidiﬁers designed for different uses and applications.

Contact your nearest Munters ofﬁce if you have any questions reg a rding the installat ion or the use of your

dehumidiﬁer.

For product data, see section Technical speciﬁcation.

1.2 Aboutthismanual

This manual contains necessary information for how to install and use the dehumidiﬁer in a safe and

efﬁcient way. Operation instructions for the control system can be f ound in a separate supplement, also

delivered with t he dehumidiﬁer.

NOTE!

Makesuretoreadallrelevantpartsofthismanualbeforeoperatingorperforminganyworkonthe

dehumidiﬁer. Thismanualshouldbestoredinapermanentlocationclosetothedehumidiﬁer.

1.3 Safetyandcautions

Every measure has been taken in the design and manufacture of the dehumidiﬁer to ensure that it meets the

safety requirements of the directives and standar ds listed in the EC Declaration of Conform ity.

The information in this manual shall in no way take precedence over individual responsibilities or local

regulations.

During operation and other work with a machine it is always the responsibility of the individual to consider:

■

The safety of all persons concerned.

■

The safety of the unit and other proper ty.

■

The protection of the environment.

The types of dangers that are indicated in this manual are described in section Important user information.

WARNING!

-Theunitmustnotbesplashedwithorimmersedinwater.

-Theunitmustneverbeconnectedtoavoltageorfrequencyotherthanthatforwhichitwasdesigned. Refertothe

identiﬁcationplate. Linevoltagethatistoohighcancauseanelectricalshockhazardanddamagetotheunit.

-Donotins

ertﬁngersoranyotherobjectsintotheairvents.

-Allelectricalinstallationsmustbecarriedoutbyaqualiﬁedelectricianandinaccordancewithlocalregulations.

-Thedehumidiﬁercanrestartautomaticallyafterapowercut. Alwayssetandlockthemainpowerswitchinthe

OFFpositionbeforecarryingoutanyservicework.

-Useonlyapprovedliftingequipmenttopreventpersonalinjuryanddamagetotheequipment.

-AlwayscontactMuntersforserviceorrepair.

190TEN–108 8–G1412

Introduction

1

1.3.1 Safetylabels

The safety labels below are attached to the unit. Make sure that all personnel working with or near the unit

are aware of the meaning of each label.

Figure 1.1 Risk of p ersonal inju ry due to electric shock. Figure 1.2 R isk of personal injury due to hot surfaces.

1.4 Operationmonitoring

Thedehumidiﬁer is controlled and monitored from the control panel on the front of the unit, see section

5.1, Control panel. The HMI (Human M achine Interface) is used to display values and parameters, and t o

input settings and commands to the control system. The HMI is described in the separate supplement.

2

Introduction

190TEN–1088–G1412

1.5 Applicationlimitations

Thedehumidiﬁer conforms to the emission limits of residential, commercial and light-industrial

environments except for the emission limits for harmonics emission (EN 61000-3-12).

As the equipment exceeds the limits for harmonics it must not be used in residential, commercial or

light-industrial environment without taking proper steps regarding the power installation like supplying the

equipment from a dedicated transformer connected to t he high or medium voltage network.

Thedehumidiﬁer conforms to R

sce

33, see Table 1.1.

Harmonic, number Limit (%)

1)

Measured value (%)

18

0,32

3 4 0,24

4 10,7 4,00

5 2,67 0,05

6

7,2

2,09

7

2

0,05

9 1,6 0,02

10 3,1 0,56

11

1,33 0,01

12 2

0,54

PWHD

2)

22

3,1

1)

Measured values valid for R

sce

=33

2)

Partial Weighted Harmonic Distortion

Table 1.1

Thedehumi

diﬁer must only be used in industrial environments (class A) when the HMI is equipped w ith a

touch pa n

el. If the HMI is equipped with a text panel, the dehumidiﬁer can be used in all environments

since t he

text panel is approved according to class B.

Thedehumidiﬁer is intended for indoor installation only.

1.6 Faultindications

Any faults are indicated by the red light on the control panel. The cause of the alarm is indicated on the

display.

190TEN–108 8–G1412

Introduction

3

1.7 Marking

1.7.1 Identiﬁcationplate

MX² 35E-55E

MX² 60E-95E

MX² 30E

Figur e 1.3 Position of identiﬁcation plat e

1005 170XXX XXXXX

4,1 kW

Max

40,6 kW

Munters Europe AB

Isafjordsgatan 1

164 26 Kista, Sweden

M

36 kW

Made in Sweden

Fabr. No.

Fabr. year 2010

3 ~ 400V 50 Hz

Type

IP33

MX² 55E

Figure 1.4 Identiﬁcation plate, example

Explanation of "Fabr. No" on the identiﬁcation plate:

10 Year of manufacture 170XXX Article number

05 Week of manufacture XXXXX Serial number

1.7.2 Pressuretestpoints

The built-in pressure t est points are used for measuring pressure drop across components during

basic installation work and inspection of the rotor condition. For airﬂow adjustment, refer to section

4.2, Airﬂow adjustment .

MX² 35-55E

MX² 60-95E

MX² 30E

Figure 1.5 Label position

TP1

TP2

TP3

TP4

Figure 1.6 Pressu re test points

TP1. Process a ir TP1–TP4. Differential pressure, process air

TP2. Wet air TP2–TP3. Differential pressure, reactivation air

TP3. Reactivation air

TP4. Dry air

4

Introduction

190TEN–1088–G1412

2 Dehumidiﬁerdesign

2.1 Productdescription

The desiccant dehumidiﬁer has been designed to effectively dehumidify the air in environments requiring

low air humidity.

All functional components are enclosed in a corrosion resistant Aluzink

®

casing (standard) or stainless steel

casing (option) which makes installation and maintenance easy. The unit is constructed on a steel base frame

which allows the use of a fork-lift truck during transportation and installation.

The electrical control system complies with standard EN 60204-1. The electrical components are mounted

on bus bars. The dehumidiﬁer is manufactured according to E uropean standards and the established

requirements for CE-marking.

2.2 Principleofoperation

1

4

2

3

Figure 2.1 R otor principle

1. Process air

2. Dr y air

3. Reactivation air

4. Wet air

The desiccant rotor is the adsorption dehumidifying component in the unit. The rot or structure is

comprised of a large number of small air channels.

The desiccant rotor is made of a composite material that is highly effective in attracting and retaining water

vapour. T he rotor is divided in two zones. The airﬂow to be dehumidiﬁed, process air, passes through the

largest zone of the rotor and then leaves the rotor as dry air. Since the rotor rotates slowly, the incoming air

always meets a dry zone on the rotor, thus creating a continuous dehumidiﬁcation process.

Theairﬂow tha t is used to dry t he rotor, r e a c tivation air, is heated. The reactivation air passes through

the rotor in the opposite direction to the process air and leaves the rotor a s wet air (warm, moist air). This

principle enables t he dehumidiﬁer to work effectively, even at freezing temperatures.

190TEN–108 8–G1412

Dehumidiﬁerdesign

5

A

4

A

3

A

2

A

1

A

5

A

6

A

7

Figur e 2.2 Airﬂow overview

1. Process air

2. Dry air

3. Reactivation air

4. We t air

5. Reactivation fan

6. Rotor

7. Process fan

6

Dehumidiﬁerdesign

190TEN–1088–G1412

2.3 Maincomponents,MX²30

4

13

3

1

2

6

7

8

10

9

16

17

11

12

14

5

15

Figur e 2.3 Exploded view

18

19

15

Figure 2.4 Front view

190TEN–108 8–G1412

Dehumidiﬁerdesign

7

Item No.

Description

1.

Reactivation fan

2.

Filter, reactivation air

3. Filter, process air

4.

Reactivation heater

5.

Cooling fan with ﬁlter

6.

Filter, cooling fan

7.

Connector, RJ45

8.

Main power switch

9.

Pressure sensor

1)

10.

Process fan

11.

Duct, bypass damper

1)

12. Rotor

13. Drive m otor, rotor

14.

Safety thermostat (HTCO)

15.

Electrical panel

16.

Control syste

mdisplay

17.

Control panel

18.

Filter guard

19. Sensor, rotor stop

1)

Option

Table 2.1 Main components, MX² 30

8

Dehumidiﬁerdesign

190TEN–1088–G1412

2.4 Maincomponents,MX²35–95

3

14

13

12

10

8

7

6

5

2

11

1

18

17

16

15

4

9

Figur e 2.5 Exploded view

19

20

22

21

Figure 2.6 Front view

190TEN–108 8–G1412

Dehumidiﬁerdesign

9

Item No.

Description

1.

Filter, reactivation air

2.

Control system display

3.

Control panel

4.

Power supply infeed b ox (MX² 60–95E)

5.

Process fan

6.

Duct, bypass damper

1)

7.

Duct, purg e, right

1)

8.

Reactivation heater

9.

Safety thermostat (HTCO)

10.

Electrical panel

11.

Drive motor, rotor

12. Rotor cassette

13.

Duct, purge, left

1)

14.

Filter guard

15.

Plate, bypass

16.

Filter, process air

17.

Reactivation fan (left)

2)

18.

Reactivation fan

19. Connector, RJ45

20.

Main power switch

21. Pressure sensor

1)

22.

Sensor, rotor stop

1)

Option

2)

Only used for reversed assemblies

Tab

le 2.2 Main components, MX² 35–95

10

Dehumidiﬁerdesign

190TEN–1088–G1412

2.5 Hightemperaturecut-out

Thedehumidiﬁer is equipped with safety therm ostats (HTC O:s) w hich prevents it from being overheated

and damaged if the reactivation air becomes too hot.

A thermostat with sensing bulb and capillary tube measures the temperature in the reactivation air duct, in

front of the rotor. The therm ostat has a reset butt on on the t hermostat housing. In a ddition, one (MX² 30,

35) or two bimetal disc thermostats are located on top of the reactivation heater elements.

If the reactivation air temperature exc eeds the therm ostat setting s, the reac tivation heater is switched off an d

the alarm message “React Heater H TC O” is shown on the control panel display.

After an alarm, the safety thermostats must be reset according to the following:

■

Reset the circuit breakers for the reactivation heater on the electrical panel.

■

Press the reset button on the therm ostat housing. See Figure 2.7 for how to access the ther mostat

housing.

Figure 2.7 Location of thermostat housing

190TEN–108 8–G1412

Dehumidiﬁerdesign

11

2.6 Conﬁgurationfeatures

This chapter includes infor mation about functions and components that can be added w hen ordering an

MX² dehumidiﬁer.

2.6.1 Insulatedprocessairinlet

All dehumidiﬁer units supplied with pre-cooled process air should have insulated process air inlet. The

process air sector in front of the rotor has an internal lining of isolation to prevent condensation on the unit.

2.6.2 Processfancontrol

The process fan is equippe

d with a frequency converter for controlling the f an speed. The process fan

control can be conﬁgure

dasﬁxed speed or variable speed according to below:

Fixed speed

The frequency conve rter for the process fan is pre-set at t he factory and the process fan always runs with a

constant speed that gives the rated process airﬂow.

Variable sp eed

The frequency conver

ter for the process fan is controlled either by ﬂow or pressure.

At ﬂow control, a pressure sensor measures the pressure difference over the inlet cone on the process fan. At

pressure control, a pressure sensor measures the air pressure in the dry air duct.

Th e a ctual value from the pressure sensor is calcula ted, tog e the r with the fan coefﬁcient, by the PLC in the

control system. The PLC compares the actual value w ith the set point value and changes the command

signal to the frequency converter if there is a difference b etween the values.

12

Dehumidiﬁerdesign

190TEN–1088–G1412

2.6.3 Bypassdamper

MX² 30

MX² 35-95

Figure 2.8 Handle for bypass damper

An installed bypass damper kit allows a ﬁxed airﬂow to be us ed when the process airﬂow exceeds t he

maximum rotor ﬂow capacity. The bypass function consists of an adjustable damper positioned in the

bypass airﬂow channel. The bypass airﬂow channel is integ rated with the unit and passes under the rotor.

NOTE!

Thebypassdampershouldonlybeadjustedbyspeciallytrainedpersonnel.

1

2

3

4

6

5

Figur e 2.9 Bypass principle

1. Reactivation air

2. Heated reactivation air

3. Wet air

4. Pr ocess air

5. Dry air

6. Bypassed process air

190TEN–108 8–G1412

Dehumidiﬁerdesign

13

2.6.4 EnergyRecoveryPurgeandEnergyEfﬁciencyPurge

1

2

3

4

7

6

5

6

Figure 2.10 Principle for Ener gy Recover y Purge and Ener gy Ef ﬁciency

Purge

1. Reactivation air

2. Heated reactivation air

3. Wet air

4. Pr ocess air

5. Dry air

6. Purge air

7. Warm purge air

Energy Recover y Purge (ERP) and Energ y Efﬁciency Purge (EEP) are two energy saving solutions that

recycles heat f rom the rotor, after the reactivation section in the rotational direction of the rotor. A minor

part of the reactivation airﬂow is bypassed to the war m sector of the rotor, before the airﬂow enters the

reactivation heater. T he airﬂow is heated up by the rotor and then mixed with the reactivation airﬂow, after

the r eactivation heater. The recycled heat from the rotor increases the efﬁciency and reduces the energy

consumption.

Compared to a standard unit, ERP will give the same dehumidiﬁcation capacity with reduced reactivation

heater energ y. With EEP, the reactivat ion heater energy is the same as in a standard unit, while the

dehumidiﬁcation capacity is increased.

Thepurge airﬂow duct on MX² 30 is installed on the rear side of the unit. The purge airﬂow (ERP, EEP,

LDP)canbeadjustedwithadamperinstalledontheduct.

MX² 30

Figure 2.11 Purge airﬂow duct

Thepurge airﬂow duct on MX² 35–95 is located inside the unit and the purge airﬂow (ERP, EEP) cannot be

adjusted. An a djustable damper for Low Dewpoint Purge is located on top of the unit.

14

Dehumidiﬁerdesign

190TEN–1088–G1412

2.6.5 LowDewpointPurge

2

5

3

6

4

1

7

Figure 2.12 Low Dewpoint Purge principle

1. Reactivation air

2. Heated reactivation a ir

3. Wet air

4. Process air

5. Dry air

6. Warm purge air

7. Adjustable damper

Low Dewpoint Purge (L

DP) is used to enable e xtra low dewpoints. A minor part of the process airﬂow is

forced through a sma

ller sector of the rotor which, according to the rotor rotation direction, is positioned

directly after the r

eactivation sector. The result is that a part of the process air is taken off (purge air) and the

rotor ma terial is c

ooled down before it is exposed to the dry air outlet sector. The warm purge airﬂow which

is drawn from the s

maller sector of the rotor passes an adjustable damper and enters the reactivation air just

before the react

ivation heater. This makes drying of the rotor more efﬁcient.

NOTE!

Thepurge

airﬂowsettingisapplicationdependentandshouldonlybeadjustedbyspeciallytrained

personnelduri

ngthecommissioningtoobtainthedesireddryairdewpoint. Ageneralrecommendationisthatthe

purgeairﬂowre

presents10%ofthetotalprocessairﬂow.

MX² 30

MX² 35-95

Figure 2.13 Adjustable damper for Low Dewpoint Pur ge

NOTE!

Theadjustabledamperissetfromthefactoryandshouldonlybeadjustedbyspeciallytrainedpersonnel.

190TEN–108 8–G1412

Dehumidiﬁerdesign

15

2.6.6 Pre-reactivationheater

A pre-reactivat ion heater is an additional heater which fur ther reduces energy costs. It is installed on t he

reactivation air inlet and consists of a heating coil and a control valve with actuator. The heating coil uses

steam or hot water as heating medium and is connected to the plant steam supply or district heating system.

During normal operating conditions the pre-reactivation heater functions as the main heater whereas the

electric reactivation heater is not in use. During peak load periods that require more dehumidiﬁcation

capacity, or if the heating medium supply becomes insufﬁcient, the built-in regulation equipment s tarts

the electric reactivation heater.

The control valve and a ctuato

r are delivered separately if ord ered, a nd must be installed.

1

2

Figure 2.14 MX² 30 with pre-reactivation heater

1. Filter box, reactivation air

2. Pre-reactivation heater

16

Dehumidiﬁerdesign

190TEN–1088–G1412

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