Humimax HMA Evaporative...

Humimax HMA Evaporative Humidifier/Cooler

Technical Specifications

Installation Instructions

Operating and Maintenance Instructions

Spare Parts List

2 Manufacturer reserves the right to change specification without prior notice

The Munters Humimax unit is anevaporative humidifier/coolerdesigned to be installed in a room orbuilding in which humidity ortemperature needs to be controlled.

• Four different model sizes: Humi-max 02, 04, 06 and 09 (max. airflow: 2,000, 4,000, 6000 and9,000 m3/h).

• Humidifying or cooling operation

• Integrated control equipment withpatent-applied-for humidity regulation.

• Modulating fan speed controller.

• Water reservoir is automaticallyemptied and flushed.

• Energy efficient.

• Low noise level.

• Compact.

• Easy to install.

• Can be floor or wall mounted.

• Minimum maintenance.

• No droplet carry-over.

• EMC tested.

• CE markedWater filter

Constant flow valve

Drain pipe

Motor fordrain valve

Distribution manifold

Design Standard UnitThe casing of the Humimax humidifier ismade of stainless steel. A wetting pad ismounted in the air inlet. The air to be humi-dified is drawn through the pad by an axialfan positioned in the outlet of the unit.

The bottom of the unit forms a water reser-voir made of ABS. Water is supplied to thereservoir through a water filter, a constant-flowvalve and a solenoid valve that is opened orclosed by signals from a level-sensor.

A submersible circulation pump is mountedon the bottom of the water reservoir to feedwater to the distribution manifold located at thetop of the wetting pad.

The reservoir is emptied using a drain valvethat is opened or closed by means of a rack andpinion drive. The drain valve is equipped with abuilt-in overflow protector. The drain pipe fromthe reservoir exits through the bottom sectionon the unit’s inlet side.

There are two electronic temperature sen-sors. The sensor for dry-bulb temperature ismounted in the unit’s inlet and the one for wet-bulb temperature is submerged in the reservoir.These provide continuous data for calculatingthe relative humidity.

A control cabinet is mounted under the shortend of the reservoir. The controls in the cabinetare used to adjust the settings for relative

Contentspage

Design Standard Unit 2

Operational features 4

Operation accessories 6

Selection of size 8

System layout 10

Installation 11

Control settings 12

Remote control &Alarm 13

Maintenance 14

Spare Parts 15

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3Manufacturer reserves the right to change specification without prior notice

Water reservoirPump

Solenoid valveLevel-sensor

Dry-bulb temperature sensor

Wet-bulb tempera-ture sensor

Controlcabinet

Terminal box Isolating disconnector

Alarm lamp

Drainvalve

Casing of stainless steel

Wetting pad CELdek®

Axial fan

humidity and for temperature, as well as toselect either humidifying or cooling mode,maximum and minimum fan speed and thenominal interval for emptying the reservoir. Italso contains a reset button for fan overload.

The power required for the unit is single-phase, 230 V, 50 Hz, which can be connectedto the lockable isolating disconnector situatedon the inlet side of the unit.

On the outside of the humidifier’s inlet is aterminal box for connecting all external acces-

sories. An alarm lamp is mounted on the outletside of the unit to indicate, among other things,abnormally high water consumption, overload,and short-circuit, see page 13.

AccessoriesTo modify the unit to suit special applications,a number of accessories are available, forexample an external humidity sensor as well as equipment for the remote control of one ormore units, see pages 6-7.

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Operation, standard Humimax unitStartup PhaseWhen the unit is switched on, the drain valvestarts to close and the fan starts at 20% of themaximum speed. The supply-water solenoidopens for 5 seconds and closes for 10 seconds toflush the reservoir clean. This sequence repeatsitself once. (The unit can be started using one ofthree accessories: operating switch, timer orremote control.)

The drain valve is closed after 2.5 minutes.Then, the solenoid valve opens completely andthe reservoir begins to fill. Filling lasts another 1or 2 minutes (depending on reservoir capacity)until the reservoir is full. The level-sensor shutsoff the solenoid valve.

After that, the fan runs at 50% of the maxi-mum speed for 6 minutes, before the unitswitches into operating mode.

In this way, the temperature of the reservoirhas time to adjust, and the sensor’s measuredvalues can be used to calculate the relativehumidity of the room. (When an external humi-dity sensor is used, the unit switches directlyinto operating mode once the reservoir is full.)

Operating PhaseIn operational mode the dry-bulb temperaturesensor and the wet-bulb temperature sensorprovide data to the control cabinet, which con-tinuously calculates and compares relativehumidity values with the pre-set values. Thecontrol cabinet increases the speed of the fanuntil the pre-set value is reached.

If the setting for humidity is changed, therelative humidity is kept constant in that thespeed of the fan varies - within the set min. andmax. limits.

In the ”Cooling” mode, the speed of the fanis regulated by the preset temperature.

Reservoir EmptyingThe reservoir is emptied after a certain operat-ing interval depending on the actual amount ofwater that is evaporated. This prevents the con-centration of minerals from reaching unaccept-able levels. The reservoir-emptying interval (seepage 12) is set in the control cabinet. It depends

on the hardness of the water as well as the qual-ity of the air. If the nominal interval is twohours, the reservoir will then be emptied everyfour hours with the fan running at half speed.To empty the reservoir, the drain valve is ope-ned with the solenoid valve in closed positionwhile the pump and the fan are stopped. After 3minutes, a new clean-flush cycle begins followedby the filling of the reservoir as shown above,then followed by a new operating cycle, etc.

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Unit ShutdownWhen the humidifier is shut down the reservoiris emptied. The drain valve opens, the solenoidvalve closes and the pump stops. The fan runsup to maximum rpm, to dry the wetting pad for30 minutes. After that, the fan stops.

View from behind with pad frame removed.Water is distributed by means of the spraymanifold to the water distribution pad, whichgives an even wetting of the CELdek®

humidifying pad.

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Operation with accessories

Mesh filterThe mesh filter consists of a 200-µmm nylonmesh stretched across a stainless steel frame. Itis used to remove long-fibre airborne dust (e.g.in printing, textile or woodworking environ-ments). This will increase the time between wet-ting pad replacements and will reduce the servi-ce requirements for the humidifier.

The filter is snapped into place using theexisting fasteners located in the unit’s inlet.

The nylon mesh filter will reduce themaximum air flow by about 10%.

Air deflector

Sometimes it is necessary to direct the airstream from the unit. The air deflector hasmovable slats to direct the air both horizontaland vertically.

Circular connection flangeThe round flange lip (see picture under “Airdistribution sock”), is used to connect to a sockor circular duct.

When connecting to an external duct thatwill create a pressure drop 25, 50 or 75 Pa, (cal-culated at maximum air flow), the air flow willbe reduced by 10%, 20% or 30%, respectively.

Air distribution sock

One way of distributing the air “softly” is toconnect an air distribution sock to the outlet.The sock, which is made of a washable textile, isused to rapidly dissipate the air velocity at thefan outlet.

The maximum airflow is reduced by 10%when the sock is connec-ted.

Earthed wall plugIn cases in which the unit is to be easily mov-

able (not permanent installation), a two-metrecable with a wall socket plug is to be ordered.The wall plug is supplied to comply with localstandards.

Size Length, m02 2.504 506 509 7

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External on/off operating switchAn external on/offswitch is used tobe able to switchthe unit on or offfrom a desiredlocation. The unitcan be orderedwith the switchmounted orseparate for wallmounting.

TimerA timer is usedwhen it is desiredto have the humi-difier operatingduring presetperiods. Thetimer can be setto switch the uniton or off for eachday of the week.The minimuminterval is two

hours. The timer has a back-up power supply of150 hours and includes a manual on-auto-off switch on the front.

External humidity sensor, 4-20 mAThe internalhumidity sensorindicates themoisture level ofthe air drawn intothe unit. In mostcases, this is arepresentativevalue of the relati-ve humidity to bemaintained in the

room. If the level of the relative humidity in acertain part of the room is of particular impor-tance, an external humidity sensor can be pla-ced in the space. The maximum distance fromthe unit is 100 metres.

If an external humidity sensor is connectedto the circuit, the internal sensor isautomatically disconnected.

Another advantage of using an external

sensor is that one does not need to set the mini-mum speed in order to maintain the room’swet-bulb temperature in the water. This meansthat the fan stops completely when there is noneed for humidity at all.

Remote control with display

A remote control can be used to monitor andadjust most of the unit’s operating parametersfrom any other desired location. The maximumdistance from the unit is 100 metres.

The remote control can regulate up to amaximum of four separate units. It should onlybe used in combination with an externalhumidity sensor.

The LED display on the remote control con-tinuously shows the relative humidity or tempe-rature of the unit being monitored. Using theremote control, it is possible to carry out the fol-lowing operations:1. Reset alarm indications

2. Adjust settings for humidity and temperature

3. Set operation mode, humidifying or cooling

4. On/off

5. Set the maximum fan speed

6. Switch to max. fan speed with pump stopped.(Air circulation)

It is not possible to set the reservoir emptyinginterval nor the minimum fan speed using theremote control. The switches in the controlcabinet must be used for this.

Manufacturer reserves the right to change specification without prior notice

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8 Manufacturer reserves the right to change specification without prior notice8

Selection of sizeThe most suitable Humimax size can be chosenusing the diagram above and an ix-diagram.

ExampleTypical external air humidity (winter):x1 = 1.9 g/kg (see ix-diagram).

Internal humidity absorption, m1= 0 litre/h.

Desired room conditions, 20 °C/50% RH, i.e. x2 = 7.2 g/kg (see ix-diagram)

The room is supplied with air from outside:q1 = 1600 m3/h

SolutionStart in the diagram shown above at a roomtemperature of 20 °C and trace along the curvefor 50% RH. The humidifying rate is found onthe left-hand scale: ∆x= 2.2 g/kg.

The required air flow for the unit can be calcu-lated using the formulaq = q1•(x2-x1)/∆x+833•m1/∆x

q=1600•(7.2-1.9)/2.2+833•0/2.2 = 3 855 m3/h

Select size HMA-04

Ordering codesEvaporation-type air humidifier,

Standard Humimax Unit HMA-xx-00

Max. air flow Size

2 000 m3/h 02

4 000 m3/h 04

6 000 m3/h 06

9 000 m3/h 09

AccessoriesMesh filter, unmounted HM-xx-01

Mesh filter, mounted HM-xx-02

Air deflector, mounted HM-xx-03

Circular flange, mounted HM-xx-04

Air-distribution sock, unmounted HM-xx-05

Pair of mounting brackets, unmounted HM-00-06

Operating switch, unmounted HM-00-08

Operating switch, mounted HM-00-09

Timer, unmounted HM-00-11

Timer, mounted HM-00-12

Remote control, unmounted HM-00-13

Humidity sensor, 4-20 mA, unmounted HM-00-14

Earthed wall-socket plug, GB, mounted HM-00-16

Ordering exampleOne Humimax size 04 with separate operating switch,

mounted mesh filter and separate brackets:

1 Standard Humimax Unit HMA-04-00

1 Mesh filter, mounted HM-04-02

1 Pair of brackets, unmounted HM-00-06

1 Operating switch, unmounted HM-00-08

15

0

5

10

30

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10

20

45

0

15

30

60

0

20

30

40

50

10

70

151050

5 10

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5

7,5

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15 10 20

40

0

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0 0

17,5

20 25 30 35

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02 0204 0406 0609 097

30

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90%

80%

70%

60%

50%

40%

30%

20%

10%

Room temperature °C Evaporative cooling capacity, kW

SizeSize

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Add

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/kg

Relativ

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in ro

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Added humidity, l/h

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9Manufacturer reserves the right to change specification without prior notice 9

C

90

300

A350350 3509575 40

150

B

D

350

Water mains supply, 1/2 in. pipe thread

Mains supply, 1-phase, 230V, 50 Hz

Drain pipe, outside dia. 32 mm, O-ring sleeve

Dimensions and weightHumimax size 02 04 06 09A, mm 700 700 1300 1300

B, mm 670 920 920 1170

C, mm 361 436 459 465

D, mm 240 350 375 470

Flange lip dia., mm 460 490 735 785

Fan dia., mm 350 400 560 630

Weight with-out water, kg 25 30 60 70

Weight with water, kg 30 40 75 85

Electrical specificationRated voltage of unit, 1 phase

Units power rating, kW 0.16 0.34 0.39 0.56

Units rated current, A 0.80 1.75 1.80 2.70

Max fan speed, rpm 1370 1270 950 910

Circul. pump, rated power, W 10 10 15 15

The unit belongs to protection class IP43.Electrical connection, all sizes: 1-phase, 230V, 50Hz, 2.5A

NoiseSound power level, Lw dB 74 78 79 81

Noise level1) 3), LA 3 m dB(A) 59 62 62 63

Noise level2) 3), LA room dB(A) 57 60 60 61

1) At a distance of 3 meters from the fan at an average absorption coeffi-

cient of µ=0.15 (normal damped room) and a room volume of 1 000, 2 000,

3 000, or 4 500 cubic metres for model sizes 02, 04, 06 or 09.

2) In the reverberation field of the room according to specifications, note 1.

3) When the fan is operating at half speed, the noise levels according to 1

and 2 above will be reduced with 15 dB(A). See diagram at right.

Water consumption, humidifyingThe humidifier’s water consumption depends on thetemperature of the room and its relative humidity. At 20 °Cand 50% RH, the total water consumption will vary between1.1 and 2 times the evaporation rate, depending on the presetnominal drainage interval. The evaporation rate for the vari-ous unit sizes and room conditions can be found in the figureson page 8.

100

10

20

30

40

50

20 30 40 50 60 70 80 90% of nominal fan speed

Noise reduction dB(A), atdifferent fan speeds

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Please noteAlways observe minimumclearances as indicated byshaded areas.

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Examples of installations A few examples of how the system can be builtup based on a standard unit, plus additionalaccessories are shown below. In system number1, the accessories have been installed at thefactory, and the unit can be plugged directlyinto a standard earthed wall socket.

For systems 2 to 6, which are permanent instal-lations, the accessories are supplied separatelyand are mounted on the wall or connected tothe unit by a authorized electrician.

Control is via theunit’s internalsensor. Operatingparameters such asthe settings forhumidity andtemperature areadjusted via theunit’s controlcabinet. The unit is

switched on and off using a switch mounted on thewall (system 2). It is also possible to use a weekly timerprovided with a manual on–auto–off switch on thefront (system 3).

Control is via anexternal humiditysensor. Operatingparameters such ashumidity and tempera-ture can be set usingthe unit’s control cabi-net. The unit is swit-ched on/off using aswitch mounted on awall.

Four series-connected units canbe regulated by the remotecontrol and an external sensor.The external humidity sensorsends signals to all four units,which means that all four runat the same speed. The

maximum speed and on/offcan be regulated for eachhumidifier individually usingthe remote control. (Theexternal sensor may beconnected to any one of thefour units.)

System 1 System 2 System 3

System 4

System 6

System 5

Control is via theunit’s internalsensor. Operatingparameters such asthe settings forhumidity andtemperature areadjusted via thecontrol cabinet. Theunit is switched onand off using aswitch mounted onthe unit.

Control is via an external humiditysensor. Measured values forhumidity and temperature areshown on the remote control´sdisplay. Most of the operatingparameters, such as settings forhumidity and temperature, can beset using the remote control. Theunit is switched on and off using theremote control.

I0

I0

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RH

-230V, 50 Hz

RH

RH

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Electrical connectionThe electrical connection must be car-ried out by an authorized electrician.The 230-V supply is connected asshown below. The maximum fuse to be

used is 10 amperes. Install the required accesso-ries as shown in the electrical diagram.

External power and other external connec-tions are made to the terminal box on theoutside of the humidifier.

Multiple units If one or more units are regulated using theremote control, they are to be connected inparallel across terminals 5 and6. The remote control is to beconnected to unit 1. The exter-nal humidity sensor may be con-nected to any unit. A resistor of120 W is to be connected acrossterminals 5 and 6 on the lastunit in the chain (this resistorcan be found attached to thecover of the remote control).The units are num-bered by using the dipswitches 3 and 4, seepage 12.

InstallationThe unit can be either placed directly on thefloor or mounted on a wall. The space aroundall the sides of the unit, above and behind, is tobe greater than 350 mm. See page 9.

Brackets for wall mounting are avail-able as accessories. For wall mounting,check that the wall has sufficient load-carrying capacity to bear the weight of

the unit, see technical specifications. If neces-sary, reinforce the wall using vertical studs.Adjust the unit horizontally using a level.

Water connectionThe fresh-water pipes should be provided with ashut-off valve near the unit.

Water connection (see dimensioned drawingon page 9). The minimum pressure is 5 bar (5 kg/cm2). The maximum pressure is 9 bar (9 kg/cm2). For drainage connection, see page 9.

The drain is to be provided with a water trap.

350 mm

1T1 T3

L

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L

0

0

0

2 4 5 6 73

I0

RH1

BA

2

5 6 7

5 7

5 7

5 6

6

6

7

* 1-phase, 230V,50Hz. 0,75 mm2

*

Isolating dis-connector

0,5

mm

2

Connection box

Connection box and Isolating disconnector

On/off switch or timer

Remotecontrol

External humiditysensor

4

3

2

1

!OBS

For mounting on a concrete wall, use an expan-sion type bolt with a diameter of 12 mm and alength of 80 mm. *

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WARNING

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CAUTION

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Setting the operating para-meters via the control cabinet

The unit’s control cabinet contains potentiome-ters and dip switches for setting and adjustingthe various operating parameters that may beneeded. See illustration.

A. Setting of set-value. The set-value forrelative humidity or for temperature. Thepotentiometer supplies the set-value for humid-ity if dip switch 1 is set to the ”off” position.The dip switch is set to ”on” for the tempera-ture set-value. The factory setting is 50% RH.

B. Setting of speed. The potentiometercontrols the fan’s min. and max. speeds, as a percent of the nominal speed.

The minimum speed has been set as 0% onunits delivered with an external humidity sensor.

The minimum speed has been set as 10% onunits delivered without ext. humidity sensors.This is done to ensure that the measured-valuefrom the water-temperature sensor in the reser-voir shall be able to provide the correct data tothe processor for calculating the RH of theroom, even in cases of low humidity needs. Inrare cases, during summer months of highhumidity, some excessive humidifying mayoccur at 10% min. speed. If required, one maythen try using 0%, whereby a certain amount ofon/off oscillation will take place. Another optionis to shut off the unit during the summer.

The maximum speed at time of delivery hasbeen set at 100%. This is changed only if thenoise level or the flow of air is not acceptable -

in cases in which the control cabinet in winterdemands maximum speed. NOTE: the max-

imum capacity of the unit will then be less.The fan can be set to constant speed by turningthe min. and max. potentiometer to the desiredspeed setting.

C. Operational settings (humidity orcooling modes). Setting dip switch 1 in posi-tion “on” is for the cooling mode and position“off” is for humidifying. The factory setting isfor humidifying. If one wishes, during the sum-mer, to change to cooling, the dip switch shouldbe moved to the ”cooling mode” position.

D. Fast or slow humidity control. Dipswitch 2 is for the fast or slow humidifyingmode. It controls how fast the unit reacts tochanges in humidity The factory setting is forfast reaction, the dip switch is in position ”on”.

E. Numbering theunits. Dip switches 3and 4 are used to num-ber the units whencommunicating withthe remote control.

F. Emptying of reservoir. The interval foremptying the reservoir is set by using dip switch5 as shown below.

The harder the water is that is supplied tothe unit, the shorter the interval should be forreservoir emptying.

Calib. of internal humidity sensorsNOTE: These instructions are only valid forinternal sensors. (External sensors cannot becalibrated manually.) The internal sensors havebeen calibrated at the factory. When necessary,re-calibration is carried out as follows.

1. Run the humidifier until the little yellowLED stops blinking (the unit has 6 LEDs: 3 bigand 3 little ones). 2. Measure the humidity atthe unit’s inlet using a humidity sensor. 3. Setthe white set-value potentiometer to the meas-ured value. 4. Turn the calibrating potentiome-ter until the little green LED begins to blink. 5. The calibration is complete.


The controlcabinet

Dip switch1-4

Reset

Maxspeed

Minspeed

Setting of humidityand temperature

Dip switch 5. Adjustmentfor emptying interval

Calibr.potentio-meter

Fuse

For hard water (more than 150 mg/l, CaCO3)For medium-hard water (75–150 mg/l, Ca CO3)For soft water (up to 75 mg/l, CaCO3)

Reservoir emptying,short intervalReservoir emptying,medium intervalReservoir emptying,long interval (Fact. set.)

Switch 3 Switch 4 Unit

off off 1

on off 2

off on 3

on on 4

Setting the desired

humidity/temperature

(set-value)

Selecting unit

Select operating mode

Displaying humidity

or temperature

Reset alarm

Starting or stopping

unit

Change max. speed

Changing normal

operation

To enter the set-value, depress and hold the SET button

down and press “+” or “–”. To check the set-value,

depress SET.

If more than one unit is connected to the same remote

control, use CHANNEL to select the one to communicate

with. The selected unit‘s number is shown in the lower

part of the display.

To choose between the humidifying mode and the cooling

mode, depress and hold the SET button and press

%RH/TEMP.

To temporarily show temperature while in the humidifying

mode or humidity in the cooling mode, depress the

%RH/TEMP button. The value is displayed for 10

seconds.

To reset the alarm, depress the RESET button.

To start or stop the humidifier, depress the CHANNEL

button until the desired unit number is displayed. Then

depress the MODE button once, hold the SET button

down and press “+” or “–”. The display will show either “on” or “off”.

To change maximum fan speed, depress the CHANNEL button until the desired unit number

is displayed. Then depress the MODE button 2 times, hold the SET button down and press

“+” or “–”. The speed is shown in per cent of max. speed, e.g. “80Pc”.

To change between normal operation, FA-1, and circulation, FA-0 (in FA-0, the humidifier

runs only as a circulation fan, with the pump stopped), depress the CHANNEL button until

the desired unit number is displayed. Then depress the MODE button 3 times, hold the SET

button down and press “+” or “–”.

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Alarm situations An alarm lamp mounted onthe fan side of the unit will beactivated in case ofmalfunction.

The appropriate alarm codecan be determined by countingthe number of “blinks“. Toreset the alarm: Press theRESET button on the controlcabinet. For units with a remo-te control, the alarm code andunit number are shown in thedisplay. To reset the alarm:Press the RESET button on theremote control.

Alarm No of Cause of failurecode blinks

A-01 1 High temperature in the control cabinet

A-02 2 Overload in the speed control.

A-03 3 Thermo-contact overload in the fan.

A-04 4 Microchip disconnection.

A-05 5 Power supply interruption.

A-06 6 Temperature sensor for water, wet bulb, is not OK.

A-07 7 Temperature sensor for air, dry bulb, is not OK.

A-08 8 Solenoid valve is open more than 10 minutes.(Check whether the water supply is shut off.)

Setting and operating the remote control

Up to four humidifiers can be supervised andregulated using the remote control. If the unit isbeing operated in its humidifying mode, thedisplay indicates the actual relative humidity ofthe room (measured-value). If the unit is in the

cooling mode, the actual temperature of theroom is displayed. If any operating parameter ischanged, the remote control automaticallyreturns to humidity/temperature display after 10seconds.

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Cleaning & inspectionAt the end of an operating season, the humidi-fier should be cleaned and inspected as follows.Half an hour before service, shut the unit off byturning the operating switch to “0”. This willresult in the fan operating automatically for 30minutes at max. rpm. The reservoir will emptyand the wetting pad will dry. When the unit isdry, vacuum clean the air filter (if any) in theinlet.

2 Before any service work isbegun, the humidifier must be

totally isolated from the main powergrid. Switch off the isolating disconnector orpull out the wall plug.

3 Loosen the screws on the frame holdingthe wetting pad. Remove the pad by

wiggling it forwards. If the wetting pad isheavily clogged with calcium carbonate pre-cipitants, it should be replaced. If the clogginghas occurred after only one operating season,reduce the time interval between reservoirdraining using the dip switch in the controlcabinet. This will result in an optimal padservice life. If the pad has large amounts oflong-fibre dust, which tends to clog the airchannels, one should try to clean it in a suitablemanner. If this does not work, the pad shouldbe replaced. Install a suitable air filter andinvestigate whether this will improveperformance during the next operating season.

Normally, with soft water and little dust inthe air, the wetting pad should not have to bereplaced more than every other season.

4 Remove the lower pad support bywiggling it downwards and backwards.

5 Clean the reservoir, the unit’s casing andthe internal components using a moist

cloth.

6 The blue input filter for the pump iscleaned by flushing with

water, or it should be replacedif necessary. Make sure that thepump inlet is completely open.

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7 Remove the distribution manifold by pull-ing it downwards out of the clamps in the

roof. Use sturdy pliers to loosen the catch onthe pipe clamp. Unscrew the hose and the endplug. Clean the water holes and flush out themanifold.

8 Check that the float moves gently bypulling it upwards.

9 Clean the water filter.

10An air filter of the mesh type can becleaned. Shake it and flush it out with

water when necessary.

11When installing the pad, check that theair flow through the pad is in the correct

direction. The steep angle of 60 deg. shouldslope in a forward direction and downward asviewed from the air inlet side. Check carefullyusing a screwdriver.


Spare Parts ListHM02 HM 04 HM06 HM09

1. Wetting pad 40602 40604 40606 40609

2. Axial fan 40545 40563 40565 15073

3. Solenoid valve 40541 40541 40541 40541

4. Level sensor 40547 40547 40547 40547

5. Circulation pump 40530 40530 40531 40531

6. Inlet filter pump 40532 40532 40532 40532

7. Drain valve 40534 40534 40534 40534

8. Rack and pinion drive 40546 40546 40546 40546

9. Temperature sensor 40548 40548 40548 40548

10. Control cabinet 40500 40500 40500 40500

11. Screen filter HM0201 HM0401 HM0601 HM0901

60°

CE Declaration of Conformity

I, the undersigned T. Stark of

Munters Europe AB

Box 434

191 24 SOLLENTUNA

Sweden

declare that the following machinery:

Type: Evaporative Humidifiers HMA 02, 04, 06 and 09.Manufacturer: Munters Europe AB, Box 29, 74 061 TOBO, Sweden

has been manufactured using the following transposed harmonised EuropeanStandards and technical specifications:

EN 50081- 2 electromagnetic compatibility, generic emission standardEN 50082- 2 electromagnetic compatibility, generic immunity standard,industrial environment

and, within the limits specified for the machinery is in conformity with theessential health and safety requirements of the Machinery Directive89/392/EEC, the LVD Directive 73/23/EEC as amended by Directive93/68/EEC and EMC Directive 89/336/EEC.

Date: 29 July 1998

T. Stark(Product Development Manager)

Munters Europe AB - HumiCool DivisionHomepage: www.munters.com

FINLANDMunters OyPL 4FIN-01301 VantaaTel: +358 9 83 860 330Fax: +358 9 83 860 336

KINGDOM OF SAUDI ARABIAHawa Munters Co. LtdP O Box 3790Riyadh 11481Tel: +966 1 477 1514Fax: +966 1 476 0936

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FRANCEMunters S.A142-176 Av. de StalingradBâtiment 5F-92712 Colombes CedexTel: +33 1 41 19 24 51Fax: +33 1 41 19 00 17

SCANDINAVIA AND EXPORTMunters Europe ABHumiCool DivisionP O Box 434S-191 24 SollentunaTel: +46 8 626 63 00Fax: +46 8 754 56 66

GERMANYMunters Euroform GmbHDivision HumiCool Postfach 1089D-52011 AachenTel: +49 241 8900 0Fax: +49 241 8900 189

SOUTH AFRICAMunters (Pty) Ltd.P O Box 4539Edenvale 1610Tel: +27 11 455 2550Fax: +27 11 455 2553

ITALYMunters S.r.lDivision HumiCoolP O Box 73I-20090 AssagoTel: +39 02 488 67 81Fax: +39 02 488 11 71

SPAINMunters Spain S.AEuropa Empresarial, Ed. Londresc/Playa de Liencres no. 2E-28230 Las Rozas de MadridTel: +34 91 640 0902Fax: +34 91 640 1132

ITALYMunters euroemme SpAStrada Piani 2I-18027 Chiusavecchia (Imperia)Tel: +39 0183 52 11Fax: +39 0183 52 13 33

UNITED KINGDOMMunters Ltd.Blackstone RoadHuntingdon Cambs PE18 6EFTel. +44 1480 432 243Fax: +44 1480 411 332

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