Humimax HMA
Evaporative Humidifier/Cooler
Technical Specifications
Installation Instructions
Operating and Maintenance Instructions
Spare Parts List
Design Standard Unit
Contents
page
Design Standard
Unit
2
Operational features 4
Operation
accessories
Selection of size
6
8
System layout
10
Installation
11
Control settings
12
Remote control &
Alarm
13
Maintenance
14
Spare Parts
15
The Munters Humimax unit is an
evaporative humidifier/cooler
designed to be installed in a room or
building in which humidity or
temperature needs to be controlled.
• Four different model sizes: Humimax 02, 04, 06 and 09 (max. air
flow: 2,000, 4,000, 6000 and
9,000 m3/h).
• Humidifying or cooling operation
• Integrated control equipment with
patent-applied-for humidity
regulation.
The casing of the Humimax humidifier is
made of stainless steel. A wetting pad is
mounted in the air inlet. The air to be humidified is drawn through the pad by an axial
fan positioned in the outlet of the unit.
The bottom of the unit forms a water reservoir made of ABS. Water is supplied to the
reservoir through a water filter, a constant-flow
valve and a solenoid valve that is opened or
closed by signals from a level-sensor.
A submersible circulation pump is mounted
on the bottom of the water reservoir to feed
water to the distribution manifold located at the
top of the wetting pad.
The reservoir is emptied using a drain valve
that is opened or closed by means of a rack and
pinion drive. The drain valve is equipped with a
built-in overflow protector. The drain pipe from
the reservoir exits through the bottom section
on the unit’s inlet side.
There are two electronic temperature sensors. The sensor for dry-bulb temperature is
mounted in the unit’s inlet and the one for wetbulb temperature is submerged in the reservoir.
These provide continuous data for calculating
the relative humidity.
A control cabinet is mounted under the short
end of the reservoir. The controls in the cabinet
are used to adjust the settings for relative
Distribution manifold
• Modulating fan speed controller.
• Water reservoir is automatically
emptied and flushed.
• Energy efficient.
• Low noise level.
• Compact.
• Easy to install.
• Can be floor or wall mounted.
Motor for
drain valve
• Minimum maintenance.
• No droplet carry-over.
• EMC tested.
Water filter
• CE marked
Drain pipe
Constant flow valve
2
Manufacturer reserves the right to change specification without prior notice
sories. An alarm lamp is mounted on the outlet
side of the unit to indicate, among other things,
abnormally high water consumption, overload,
and short-circuit, see page 13.
humidity and for temperature, as well as to
select either humidifying or cooling mode,
maximum and minimum fan speed and the
nominal interval for emptying the reservoir. It
also contains a reset button for fan overload.
The power required for the unit is singlephase, 230 V, 50 Hz, which can be connected
to the lockable isolating disconnector situated
on the inlet side of the unit.
On the outside of the humidifier’s inlet is a
terminal box for connecting all external acces-
Accessories
Casing of
stainless steel
Axial fan
Water reservoir
Control
cabinet
Wet-bulb temperature sensor
Level-sensor
Alarm lamp
Pump
Drain
valve
Solenoid valve
Wetting pad CELdek®
Introduction
To modify the unit to suit special applications,
a number of accessories are available, for
example an external humidity sensor as well as
equipment for the remote control of one or
more units, see pages 6-7.
Dry-bulb temperature sensor
Terminal box
Isolating disconnector
Manufacturer reserves the right to change specification without prior notice
3
Operational features
4
Operation,
standard Humimax unit
Startup Phase
When the unit is switched on, the drain valve
starts to close and the fan starts at 20% of the
maximum speed. The supply-water solenoid
opens for 5 seconds and closes for 10 seconds to
flush the reservoir clean. This sequence repeats
itself once. (The unit can be started using one of
three accessories: operating switch, timer or
remote control.)
The drain valve is closed after 2.5 minutes.
Then, the solenoid valve opens completely and
the reservoir begins to fill. Filling lasts another 1
or 2 minutes (depending on reservoir capacity)
until the reservoir is full. The level-sensor shuts
off the solenoid valve.
After that, the fan runs at 50% of the maximum speed for 6 minutes, before the unit
switches into operating mode.
In this way, the temperature of the reservoir
has time to adjust, and the sensor’s measured
values can be used to calculate the relative
humidity of the room. (When an external humidity sensor is used, the unit switches directly
into operating mode once the reservoir is full.)
Operating Phase
In operational mode the dry-bulb temperature
sensor and the wet-bulb temperature sensor
provide data to the control cabinet, which continuously calculates and compares relative
humidity values with the pre-set values. The
control cabinet increases the speed of the fan
until the pre-set value is reached.
If the setting for humidity is changed, the
relative humidity is kept constant in that the
speed of the fan varies - within the set min. and
max. limits.
In the ”Cooling” mode, the speed of the fan
is regulated by the preset temperature.
Reservoir Emptying
The reservoir is emptied after a certain operating interval depending on the actual amount of
water that is evaporated. This prevents the concentration of minerals from reaching unacceptable levels. The reservoir-emptying interval (see
page 12) is set in the control cabinet. It depends
Manufacturer reserves the right to change specification without prior notice
on the hardness of the water as well as the quality of the air. If the nominal interval is two
hours, the reservoir will then be emptied every
four hours with the fan running at half speed.
To empty the reservoir, the drain valve is opened with the solenoid valve in closed position
while the pump and the fan are stopped. After 3
minutes, a new clean-flush cycle begins followed
by the filling of the reservoir as shown above,
then followed by a new operating cycle, etc.
When the humidifier is shut down the reservoir
is emptied. The drain valve opens, the solenoid
valve closes and the pump stops. The fan runs
up to maximum rpm, to dry the wetting pad for
30 minutes. After that, the fan stops.
View from behind with pad frame removed.
Water is distributed by means of the spray
manifold to the water distribution pad, which
gives an even wetting of the CELdek®
humidifying pad.
Manufacturer reserves the right to change specification without prior notice
Operational features
Unit Shutdown
5
Operation accessories
6
Operation
with accessories
Circular connection flange
The round flange lip (see picture under “Air
distribution sock”), is used to connect to a sock
or circular duct.
When connecting to an external duct that
will create a pressure drop 25, 50 or 75 Pa, (calculated at maximum air flow), the air flow will
be reduced by 10%, 20% or 30%, respectively.
Air distribution sock
Mesh filter
The mesh filter consists of a 200-µmm nylon
mesh stretched across a stainless steel frame. It
is used to remove long-fibre airborne dust (e.g.
in printing, textile or woodworking environments). This will increase the time between wetting pad replacements and will reduce the service requirements for the humidifier.
The filter is snapped into place using the
existing fasteners located in the unit’s inlet.
The nylon mesh filter will reduce the
maximum air flow by about 10%.
Air deflector
One way of distributing the air “softly” is to
connect an air distribution sock to the outlet.
The sock, which is made of a washable textile, is
used to rapidly dissipate the air velocity at the
fan outlet.
Size Length, m
The maximum air
2.5
flow is reduced by 10% 02
5
when the sock is connec- 04
06
5
ted.
09
7
Earthed wall plug
In cases in which the unit is to be easily mov-
Sometimes it is necessary to direct the air
stream from the unit. The air deflector has
movable slats to direct the air both horizontal
and vertically.
able (not permanent installation), a two-metre
cable with a wall socket plug is to be ordered.
The wall plug is supplied to comply with local
standards.
Manufacturer reserves the right to change specification without prior notice
An external on/off
switch is used to
be able to switch
the unit on or off
from a desired
location. The unit
can be ordered
with the switch
mounted or
separate for wall
mounting.
sensor is that one does not need to set the minimum speed in order to maintain the room’s
wet-bulb temperature in the water. This means
that the fan stops completely when there is no
need for humidity at all.
Remote control with display
Timer
A timer is used
when it is desired
to have the humidifier operating
during preset
periods. The
timer can be set
to switch the unit
on or off for each
day of the week.
The minimum
interval is two
hours. The timer has a back-up power supply of
150 hours and includes a manual
on-auto-off switch on the front.
External humidity sensor, 4-20 mA
The internal
humidity sensor
indicates the
moisture level of
the air drawn into
the unit. In most
cases, this is a
representative
value of the relative humidity to be
maintained in the
room. If the level of the relative humidity in a
certain part of the room is of particular importance, an external humidity sensor can be placed in the space. The maximum distance from
the unit is 100 metres.
If an external humidity sensor is connected
to the circuit, the internal sensor is
automatically disconnected.
Another advantage of using an external
A remote control can be used to monitor and
adjust most of the unit’s operating parameters
from any other desired location. The maximum
distance from the unit is 100 metres.
The remote control can regulate up to a
maximum of four separate units. It should only
be used in combination with an external
humidity sensor.
The LED display on the remote control continuously shows the relative humidity or temperature of the unit being monitored. Using the
remote control, it is possible to carry out the following 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 emptying
interval nor the minimum fan speed using the
remote control. The switches in the control
cabinet must be used for this.
Manufacturer reserves the right to change specification without prior notice
Operation accessories
External on/off operating switch
7
Size
09
04
02
30
15
06
09
20
30
20
10
40
30
15
10
5
4
%
20
%
30
%
50%
60%
2
10
40
3
1
10
40
12,5
7,5
5
70%
80%
2,5
Unit’s air flow temperature drop °C
30
in
ity
id
um
H
e
iv
lat
Re
om
ro
Fre
ezin
g
50
Added humidity, g/kg
Selection of size
10
15
6
5
20
5
30
10
20
10
10
90%
0
0
0
0
0
0
0
Added humidity, l/h
5
10
15
20
25
30
Room temperature °C
0
0
0
Evaporative cooling capacity, kW
Ordering codes
The most suitable Humimax size can be chosen
using the diagram above and an ix-diagram.
Evaporation-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
3
9 000 m /h
09
Example
Typical 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,
(see ix-diagram)
i.e. x2 = 7.2 g/kg
The room is supplied with air from outside:
q1 = 1600 m3/h
Solution
Start in the diagram shown above at a room
temperature of 20 °C and trace along the curve
for 50% RH. The humidifying rate is found on
the left-hand scale: ∆x= 2.2 g/kg.
q=1600•(7.2-1.9)/2.2+833•0/2.2 = 3 855 m3/h
Select size HMA-04
Manufacturer reserves the right to change specification without prior notice
0
35
Selection of size
The required air flow for the unit can be calculated using the formula
q = q1•(x2-x1)/∆x+833•m1/∆x
8
04
50
45
60
20
02
17,5
7
10
%
70
06
Size
Accessories
Mesh filter, unmounted
Mesh filter, mounted
Air deflector, mounted
Circular flange, mounted
Air-distribution sock, unmounted
HM-xx-01
HM-xx-02
HM-xx-03
HM-xx-04
HM-xx-05
Pair of mounting brackets, unmounted
Operating switch, unmounted
Operating switch, mounted
Timer, unmounted
Timer, mounted
Remote control, unmounted
Humidity sensor, 4-20 mA, unmounted
Earthed wall-socket plug, GB, mounted
HM-00-06
HM-00-08
HM-00-09
HM-00-11
HM-00-12
HM-00-13
HM-00-14
HM-00-16
Ordering example
One 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
350
C
150
Mains supply, 1-phase, 230V, 50 Hz
350
Water mains supply, 1/2 in. pipe thread
Dimensions and weight
02
700
670
361
240
460
350
25
30
04
700
920
436
350
490
400
30
40
A
350
Please note
Always observe minimum
clearances as indicated by
shaded areas.
Drain pipe, outside dia. 32 mm, O-ring sleeve
Humimax size
A, mm
B, mm
C, mm
D, mm
Flange lip dia., mm
Fan dia., mm
Weight with-out water, kg
Weight with water, kg
B
350
06
1300
920
459
375
735
560
60
75
09
1300
1170
465
470
785
630
70
85
Electrical specification
Rated voltage of unit, 1 phase
Units power rating, kW
0.16
0.34
0.39
Units rated current, A
0.80
1.75
1.80
Max fan speed, rpm
1370
1270
950
Circul. pump, rated power, W
10
10
15
The unit belongs to protection class IP43.
Electrical connection, all sizes: 1-phase, 230V, 50Hz, 2.5A
0.56
2.70
910
15
Noise reduction dB(A), at
different fan speeds
Noise
Sound 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 coefficient 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.
50
40
30
20
10
0
10 20 30 40 50 60 70 80 90
% of nominal fan speed
Selection of size
95
Noise reduction dB(A)
40
75
90
Control Cabinet
D
300
Water consumption, humidifying
The humidifier’s water consumption depends on the
temperature of the room and its relative humidity. At 20 °C
and 50% RH, the total water consumption will vary between
1.1 and 2 times the evaporation rate, depending on the preset
nominal drainage interval. The evaporation rate for the various unit sizes and room conditions can be found in the figures
on page 8.
Manufacturer reserves the right to change specification without prior notice
9
Examples of installations
For systems 2 to 6, which are permanent installations, the accessories are supplied separately
and are mounted on the wall or connected to
the unit by a authorized electrician.
A few examples of how the system can be built
up based on a standard unit, plus additional
accessories are shown below. In system number
1, the accessories have been installed at the
factory, and the unit can be plugged directly
into a standard earthed wall socket.
System layout
System 1
0
System 2
Control is via the
unit’s internal
sensor. Operating
parameters such as
the settings for
humidity and
temperature are
adjusted via the
control cabinet. The
unit is switched on
and off using a
switch mounted on
the unit.
I
System 4
0
I
RH
System 3
Control is via the
unit’s internal
sensor. Operating
parameters such as
the settings for
humidity and
temperature are
adjusted via the
unit’s control
cabinet. The unit is
switched on and off using a switch mounted on the
wall (system 2). It is also possible to use a weekly timer
provided with a manual on–auto–off switch on the
front (system 3).
0
I
System 5
Control is via an
external humidity
sensor. Operating
parameters such as
humidity and temperature can be set using
the unit’s control cabinet. The unit is switched on/off using a
switch mounted on a
wall.
RH
Control is via an external humidity
sensor. Measured values for
humidity and temperature are
shown on the remote control´s
display. Most of the operating
parameters, such as settings for
humidity and temperature, can be
set using the remote control. The
unit is switched on and off using the
remote control.
System 6
RH
-230V, 50 Hz
Four series-connected units can
be regulated by the remote
control and an external sensor.
The external humidity sensor
sends signals to all four units,
which means that all four run
at the same speed. The
10
maximum speed and on/off
can be regulated for each
humidifier individually using
the remote control. (The
external sensor may be
connected to any one of the
four units.)
Manufacturer reserves the right to change specification without prior notice
Electrical connection
Installation
The electrical connection must be carried out by an authorized electrician.
The 230-V supply is connected as
WARNING
VARNING
shown below. The maximum fuse to be
used is 10 amperes. Install the required accessories as shown in the electrical diagram.
External power and other external connections are made to the terminal box on the
outside of the humidifier.
The unit can be either placed directly on the
floor or mounted on a wall. The space around
all the sides of the unit, above and behind, is to
be greater than 350 mm. See page 9.
Brackets for wall mounting are available as accessories. For wall mounting,
check that the wall has sufficient loadWARNING
VARNING
carrying capacity to bear the weight of
the unit, see technical specifications. If necessary, reinforce the wall using vertical studs.
Adjust the unit horizontally using a level.
Isolating disconnector
Connection box
T1 T3
*
3 4
5 6 7
0
350 mm
0,5 mm2
L
1 2
!
0
I
On/off switch
or timer
L
0
1 2
External humidity RH
sensor
Remote
control
* 1-phase, 230V,
50Hz. 0,75 mm2
*
Connection box and Isolating disconnector
BA
L
0
For mounting on a concrete wall, use an expansion type bolt with a diameter of 12 mm and a
length of 80 mm.
Multiple units
If one or more units are regulated using the
remote control, they are to be connected in
parallel across terminals 5 and
From remote
control
6. The remote control is to be
connected to unit 1. The exter5 6 7
1
nal humidity sensor may be connected to any unit. A resistor of
5 6 7
120 W is to be connected across
2
terminals 5 and 6 on the last
unit in the chain (this resistor
5 6 7
can be found attached to the
3
cover of the remote control).
The units are num5 6 7
bered by using the dip
4
switches 3 and 4, see
CAUTION
OBS
page 12.
!
Installation
!
600 mm
Water connection
The fresh-water pipes should be provided with a
shut-off valve near the unit.
Water connection (see dimensioned drawing
on 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.
Manufacturer reserves the right to change specification without prior notice
11
in cases in which the control cabinet in winter
demands maximum speed. NOTE: the maximum capacity of the unit will then be less.
Setting of humidity Fuse The control
The
fan can be set to constant speed by turning
and temperature
cabinet
the min. and max. potentiometer to the desired
speed setting.
Calibr.
potentioOperational settings (humidity or
meter
cooling modes). Setting dip switch 1 in position “on” is for the cooling mode and position
Min
“off” is for humidifying. The factory setting is
speed
for humidifying. If one wishes, during the sumMax
mer, to change to cooling, the dip switch should
speed
be moved to the ”cooling mode” position.
Reset
Fast or slow humidity control. Dip
switch 2 is for the fast or slow humidifying
mode. It controls how fast the unit reacts to
changes in humidity The factory setting is for
Dip switch
Dip switch 5. Adjustment fast reaction, the dip switch is in position ”on”.
1-4
for emptying interval
Numbering the
Switch 3 Switch 4 Unit
The unit’s control cabinet contains potentiomeunits. Dip switches 3
off
off
1
ters and dip switches for setting and adjusting
and 4 are used to numon
off
2
the various operating parameters that may be
ber the units when
off
on
3
needed. See illustration.
communicating with
on
on
4
the remote control.
Setting of set-value. The set-value for
relative humidity or for temperature. The
Emptying of reservoir. The interval for
potentiometer supplies the set-value for humidemptying the reservoir is set by using dip switch
ity if dip switch 1 is set to the ”off” position.
5 as shown below.
The dip switch is set to ”on” for the temperaThe harder the water is that is supplied to
ture set-value. The factory setting is 50% RH.
the unit, the shorter the interval should be for
reservoir emptying.
Setting of speed. The potentiometer
controls the fan’s min. and max. speeds, as a per
Reservoir emptying,
For hard water
short interval
(more than 150 mg/l, CaCO3)
cent of the nominal speed.
Reservoir emptying,
For medium-hard water
The minimum speed has been set as 0% on
medium interval
(75–150 mg/l, Ca CO3)
units delivered with an external humidity sensor.
Reservoir emptying,
For soft water
long interval (Fact. set.) (up to 75 mg/l, CaCO3)
The minimum speed has been set as 10% on
units delivered without ext. humidity sensors.
This is done to ensure that the measured-value
Calib. of internal humidity sensors
from the water-temperature sensor in the reserNOTE: These instructions are only valid for
voir shall be able to provide the correct data to
internal sensors. (External sensors cannot be
the processor for calculating the RH of the
calibrated manually.) The internal sensors have
room, even in cases of low humidity needs. In
been calibrated at the factory. When necessary,
rare cases, during summer months of high
re-calibration is carried out as follows.
humidity, some excessive humidifying may
1. Run the humidifier until the little yellow
occur at 10% min. speed. If required, one may
LED stops blinking (the unit has 6 LEDs: 3 big
then try using 0%, whereby a certain amount of
and 3 little ones). 2. Measure the humidity at
on/off oscillation will take place. Another option the unit’s inlet using a humidity sensor. 3. Set
is to shut off the unit during the summer.
the white set-value potentiometer to the measThe maximum speed at time of delivery has
ured value. 4. Turn the calibrating potentiomebeen set at 100%. This is changed only if the
ter until the little green LED begins to blink.
noise level or the flow of air is not acceptable 5. The calibration is complete.
Setting the operating parameters via the control cabinet
Control settings
C.
12
D.
E.
A.
B.
Manufacturer reserves the right to change specification without prior notice
F.
Up to four humidifiers can be supervised and
regulated using the remote control. If the unit is
being operated in its humidifying mode, the
display indicates the actual relative humidity of
the room (measured-value). If the unit is in the
cooling mode, the actual temperature of the
room is displayed. If any operating parameter is
changed, the remote control automatically
returns to humidity/temperature display after 10
seconds.
Setting the desired
To enter the set-value, depress and hold the SET button
humidity/temperature down and press “+” or “–”. To check the set-value,
(set-value)
depress SET.
Selecting unit
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.
Select operating mode To choose between the humidifying mode and the cooling
mode, depress and hold the SET button and press
%RH/TEMP.
Displaying humidity
or temperature
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.
Reset alarm
To reset the alarm, depress the RESET button.
Starting or stopping
unit
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”.
Change max. speed
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”.
Changing normal
operation
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 “–”.
Alarm situations
An alarm lamp mounted on
the fan side of the unit will be
activated in case of
malfunction.
The appropriate alarm code
can be determined by counting
the number of “blinks“. To
reset the alarm: Press the
RESET button on the control
cabinet. For units with a remote control, the alarm code and
unit number are shown in the
display. To reset the alarm:
Press the RESET button on the
remote control.
Alarm No of Cause of failure
code 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.)
Manufacturer reserves the right to change specification without prior notice
Remote control & Alarm
Setting and operating the remote control
13
Cleaning & inspection
Maintenance
At the end of an operating season, the humidifier should be cleaned and inspected as follows.
Half an hour before service, shut the unit off by
turning the operating switch to “0”. This will
result in the fan operating automatically for 30
minutes at max. rpm. The reservoir will empty
and the wetting pad will dry. When the unit is
dry, vacuum clean the air filter (if any) in the
inlet.
14
2
!
Before any service work is
WARNING
VARNING
begun, the humidifier must be
totally isolated from the main power
grid. Switch off the isolating disconnector or
pull out the wall plug.
4
Remove the lower pad support by
wiggling it downwards and backwards.
5
Clean the reservoir, the unit’s casing and
the internal components using a moist
cloth.
3
Loosen the screws on the frame holding
the wetting pad. Remove the pad by
wiggling it forwards. If the wetting pad is
heavily clogged with calcium carbonate precipitants, it should be replaced. If the clogging
has occurred after only one operating season,
reduce the time interval between reservoir
draining using the dip switch in the control
cabinet. This will result in an optimal pad
service life. If the pad has large amounts of
long-fibre dust, which tends to clog the air
channels, one should try to clean it in a suitable
manner. If this does not work, the pad should
be replaced. Install a suitable air filter and
investigate whether this will improve
performance during the next operating season.
Normally, with soft water and little dust in
the air, the wetting pad should not have to be
replaced more than every other season.
Manufacturer reserves the right to change specification without prior notice
6
The blue input filter for the pump is
cleaned by flushing with
water, or it should be replaced
if necessary. Make sure that the
NOTE
VARNING
pump inlet is completely open.
!
Clean the water filter.
An air filter of the mesh type can be
cleaned. Shake it and flush it out with
water when necessary.
7
Remove the distribution manifold by pulling it downwards out of the clamps in the
roof. Use sturdy pliers to loosen the catch on
the pipe clamp. Unscrew the hose and the end
plug. Clean the water holes and flush out the
manifold.
60°
11
When installing the pad, check that the
air flow through the pad is in the correct
direction. The steep angle of 60 deg. should
slope in a forward direction and downward as
viewed from the air inlet side. Check carefully
using a screwdriver.
8
Check that the float moves gently by
pulling it upwards.
Spare Parts List
HM02
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
11. Screen filter
40500
40500
40500
40500
HM0201
HM0401
HM0601
HM0901
Manufacturer reserves the right to change specification without prior notice
Maintenance & Spares
9
10
15
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:
Manufacturer:
Evaporative Humidifiers HMA 02, 04, 06 and 09.
Munters Europe AB, Box 29, 74 061 TOBO, Sweden
has been manufactured using the following transposed harmonised European
Standards and technical specifications:
EN 50081- 2 electromagnetic compatibility, generic emission standard
EN 50082- 2 electromagnetic compatibility, generic immunity standard,
industrial environment
and, within the limits specified for the machinery is in conformity with the
essential health and safety requirements of the Machinery Directive
89/392/EEC, the LVD Directive 73/23/EEC as amended by Directive
93/68/EEC and EMC Directive 89/336/EEC.
Date: 29 July 1998
A Repro Reklamproduktion 0200
T. Stark
(Product Development Manager)
Munters Europe AB - HumiCool Division
Homepage: www.munters.com
FINLAND
Munters Oy
PL 4
FIN-01301 Vantaa
Tel: +358 9 83 860 330
Fax: +358 9 83 860 336
FRANCE
Munters S.A
142-176 Av. de Stalingrad
Bâtiment 5
F-92712 Colombes Cedex
Tel: +33 1 41 19 24 51
Fax: +33 1 41 19 00 17
GERMANY
Munters Euroform GmbH
Division HumiCool
Postfach 1089
D-52011 Aachen
Tel: +49 241 8900 0
Fax: +49 241 8900 189
ITALY
Munters S.r.l
Division HumiCool
P O Box 73
I-20090 Assago
Tel: +39 02 488 67 81
Fax: +39 02 488 11 71
ITALY
Munters euroemme SpA
Strada Piani 2
I-18027 Chiusavecchia (Imperia)
Tel: +39 0183 52 11
Fax: +39 0183 52 13 33
KINGDOM OF SAUDI ARABIA
Hawa Munters Co. Ltd
P O Box 3790
Riyadh 11481
Tel: +966 1 477 1514
Fax: +966 1 476 0936
SCANDINAVIA AND EXPORT
Munters Europe AB
HumiCool Division
P O Box 434
S-191 24 Sollentuna
Tel: +46 8 626 63 00
Fax: +46 8 754 56 66
SOUTH AFRICA
Munters (Pty) Ltd.
P O Box 4539
Edenvale 1610
Tel: +27 11 455 2550
Fax: +27 11 455 2553
SPAIN
Munters Spain S.A
Europa Empresarial, Ed. Londres
c/Playa de Liencres no. 2
E-28230 Las Rozas de Madrid
Tel: +34 91 640 0902
Fax: +34 91 640 1132
UNITED KINGDOM
Munters Ltd.
Blackstone Road
Huntingdon Cambs PE18 6EF
Tel. +44 1480 432 243
Fax: +44 1480 411 332
HC/MEX/CGB-0007-02/00