Master DHA 140 Manual

Edition 14 - Rev. 2
USER AND MAINTENANCE BOOK
en
LIBRETTO USO E MANUTENZIONE
it
BEDIENUNGS- UND WARTUNGSANLEITUNG
de
MANUAL DE INSTRUCCIONES PARA EL USO Y MANTENIMIENTO
es
MANUEL D’UTILISATION ET DE MAINTENANCE
fr
VEJLEDNING OM BRUG OG VEDLIGEHOLDELSE
da
KÄYTTÖ- JA HUOLTO-OHJE

HEFTE FOR BRUK OG VEDLIKEHOLD
no
ANVÄNDAR- OCH UNDERHÅLLSHANDBOK
sv
INSTRUKCJA OBSŁUGI I KONSERWACJI
pl
РУКОВОДСТВО ПО ЭКСПЛУАТАЦИИ И ТЕХНИЧЕСКОМУ ОБСЛУЖИВАНИЮ
ru
PŘÍRUČKA PRO POUŽITÍ A ÚDRŽBU
cs
HASZNÁLATI ÉS KARBANTARTÁSI KÉZIKÖNYV
hu
NAUDOJIMO IR PRIEŽIŪROS KNYGELĖ
lt
LIETOŠANAS UN TEHNISKĀS APKOPES GRĀMATIŅA
lv
KASUTUS- JA HOOLDUSJUHEND
et
MANUAL DE UTILIZARE ŞI ÎNTREŢINERE
ro
PRÍRUČKA PRE POUŽITIE A ÚDRŽBU
sk
НАРЪЧНИК ЗА ИЗПОЛЗВАНЕ И ПОДДРЪЖКА
bg
MCS Italy S.p.A.
Via Tione 12, -37010-
Pastrengo (VR), Italy
[email protected]
MCS Italy S.p.A.
Виа Тионе, 12, 37010
Пастренго (Верона), Италия
[email protected]
MCS Central Europe Sp. z o.o.
ul. Magazynowa 5A,
62-023 Gądki, Poland
o󰘲[email protected]
MCS Central Europe Sp. z o.o.
ул. Магазинова, 5A,
62-023 Гадки, Польша
o󰘲[email protected]
MCS Russia LLC
ul. Transportnaya - 22 ownership 2,
142802, STUPINO, Moscow region, Russia
[email protected]
ООО «ЭмСиЭс Россия»
Ул. Транспортная, владение 22/2,
142802, г.Ступино, Московская обл., РФ
[email protected]
MCS China LTD
Unit A1, No. 1515, Jinshao Rd.,
Baoshan Industrial Zone,
Shanghai, 200949, China
o󰘲[email protected]
MCS China LTD
строение A1, № 1515, ул. Джиньшао,
промышленная зона Баошань,
Шанхай, 200949, Китай
o󰘲[email protected]
DHA 140 - DHA 250 - DHA 360

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ТЕХНИЧЕСКИ ДАНИ – TECHNICKÉ ÚDAJE – TECHNISCHE DATEN – TEKNISK DATA –
TEHNILISED ANDMED – ESPECIFICACIONES TÉCNICAS – TEKNISET TIEDOT –
DONNÉES TECHNIQUES – TECHNICAL DATA – TEHNIČKI PODACI – MŐSZAKI ADATOK –
DATI TECNICI – TECHNINIAI DUOMENYS – TEHNISKIE DATI – TECHNISCHE GEGEVENS –
TEKNISKE DATA – DANE TECHNICZNE – DADOS TÉCNICOS – DADOS TÉCNICOS – INFORMAłII
TEHNICE – ТЕХНИЧЕСКИЕ ДАННЫЕ – TEKNISKA DATA – TEHNIČNI PODATKI –
TECHNICKÉ PARAMETRE – ТЕХНІЧНІ ДАНІ
MODEL DHA 140 DHA 250 DHA 360 DHA 140 DHA 250 DHA 360
Power supply Power /Ampere consumption * Moisture removal capacity Compressor Refrigerant Working range Water tank capacity Size (WxDxH) N.W.
230 V
HFC
H2O
WL
H
RT 30ºC RH 80%
( )
~230V / 50Hz ~230V / 50Hz ~230V / 50Hz ~230V / 60Hz ~230V / 60Hz ~230V / 60Hz
Power supply Power /Ampere consumption * Moisture removal capacity Compressor Refrigerant Working range Water tank capacity Size (WxDxH) N.W.
230 V
HFC
H
2
O
WL
H
RT 30ºC RH 80%
( )
780 W 1630 W 1970 W 780 W 1630 W 1970 W
11 kg/24h 25 kg/24h 35 kg/24h 11 kg/24h 25 kg/24h 35 kg/24h
40 m3/h 65 m3/h 70 m3/h 40 m3/h 65 m3/h 70 m3/h
120 m3/h 290 m3/h 400 m3/h 120 m3/h 290 m3/h 400 m3/h
Power supply Power /Ampere consumption * Moisture removal capacity Compressor Refrigerant Working range Water tank capacity Size (WxDxH) N.W.
230 V
HFC
H
2
O
WL
H
RT 30ºC RH 80%
( )
-20 – 40oC
Power supply Power /Ampere consumption * Moisture removal capacity Compressor Refrigerant Working range Water tank capacity Size (WxDxH) N.W.
230 V
HFC
H
2
O
WL
H
RT 30ºC RH 80%
( )
30 - 100%
58 dB(A) 64 dB(A) 64 dB(A) 58 dB(A) 64 dB(A) 64 dB(A)
Power supply Power /Ampere consumption * Moisture removal capacity Compressor Refrigerant Working range Water tank capacity Size (WxDxH) N.W.
230 V
HFC
H2O
W
L
H
RT 30ºC RH 80%
( )
405x315x316
mm
475x330x357
mm
550x402x427
mm
405x315x316
mm
475x330x357
mm
550x402x427
mm
Power supply Power /Ampere consumption * Moisture removal capacity Compressor Refrigerant Working range Water tank capacity Size (WxDxH) N.W.
230 V
HFC
H
2
O
WL
H
RT 30ºC RH 80%
( )
12 kg 19 kg 28 kg 12 kg 19 kg 28 kg

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Fig. 1

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Fig. 2 Fig. 3

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Fig. 4

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Fig. 5

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PLEASE TAKE TIME TO READ THIS MA-
NUAL CAREFULLY BEFORE USE AND
SAVE IT FOR FUTURE REFERENCE.
►1. PRINCIPLE OF OPERATION
The dehumidier removes water from an airow through,
and the removed water is carried away from the dehu-
midier with the regeneration air (henceforward called
reg.–air). Water adsorption and –extraction takes place
in an rotor made of water resistant silica gel. The air
ows in the dehumidier divides the rotor in two parts :
drying part and reg.–part.
Two separate air ows goes through the rotor as this:
– the main air (moist air inlet) goes through the drying
part, and leaves the dehumidier as dry air
– the reg.–air is taken from the process air, after
passing through two purge sections of the rotor. The
air is then heated to app 110°C by the build–in PTC
heaters. The warm air then passes through the reg.
section of the rotor and removes the adsorbed water
(as water vapours). The water vapours and the reg.–
air now leaves the dehumidier through the reg.– air
outlet.
The two air ows are xed and the rotor turns – this gives
an automatic process of simultaneous adsorption and
water extraction.
► FIG. 1:
1. lter,
2. fan,
3. rotor,
4. dry air,
5. PTC heating element,
6. regeneration air outlet,
7. drying sector,
8. regeneration sector,
9. pure sectors.
CAPACITY DIAGRAM (FIG. 5).
The inlet conditions of the air to be dried, determines
how much water the dehumidier will remove.
On the capacity diagram shows how much water will be
removed per kg process air.
Example, DHA360: (shown in the diagram – FIG. 5)
– inlet air conditions 20°C, 60 %RH, gives water con-
tent 8,7 g/kg
– the diagram shows then dry air condition of X= 5,6 g/
kg
– removed per kg air is then: 8,7 – 5.6 = 3,1 g/kg
Capacity DHA360 at this condition:
Dry air ow is nominal
400 m3/h =(x1,2) = 480 kg/h
Capacity, removed water per hour
= 480x3.1 = 1488 g/h
= 35 kg/24h
Capacity for DHA140 and DHA250 to be calculated in
the same way, using 120 and 290 m3/h.
The temperature of the dry air is higher than for the inlet air.
This is caused by the evaporation heat release and heat
gain from the rotor. The temperature is shown to be 33°C.
If bigger specic capacity g/kg is needed, this is possible
if the process air is reduced to less than nominal.
►2. APPLICATIONS
Dehumidiers in the DHA range is used for dehumidica-
tion of ambient air at normal atmospheric pressure. This
can be an installation for moisture control in an unheated
store room, in a water work building, production room
for hygro–scopic materials... – with the dehumidier in a
separate installation.
The dehumidier also can be used as a part of a bigger
air treatment system. Here the dehumidier often will be
placed in a by–pass to the main system.
In this case the pressure in the main system will inuence
the dehumidier – and your supplier must be contacted,
as this can inuence the capacity of the dehumidier.
Normally the dehumidier will be placed on the oor, on
a table or in a wall bracket (option). It should always be
placed horizontal, resting on the four pcs. rubber sup-
ports.
The air to the dehumidier should be free from solvents
or other explosive components, and should be free from
pollution from solid particles, oil vapours and exhaust
gases from Diesel engines.
For air to the dehumidier the following limit values must
be respected:
– max. humidity ...................... 100%RH
– max. Temperature ................... 35°C
– max./min. pressure ................. ambient +/–300Pa
The DHA range is for indoor, stationary or temporary
installations. Should not be placed in rooms with
possibility for free water on the cabinet.
CONTENTS
1... PRINCIPLE OF OPERATION
2... APPLICATIONS
3... COMPONENTS
4... INSTALLATION
5... COMMISSIONING
6... AIR FLOWS
7... MAINTENANCE
8... TROUBLE SHOOTING
9... SERVICE/REPAIR

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►3. COMPONENTS
REGULATION BY HYGROSTAT
The dehumidier is prepared for external regulation by
a hygrostat. Therefore a special connector for this con-
nection is placed in the cabinet front cover (the black
connector).
The male part of the connector can be delivered as option.
The cable for the hygrostat must be connected the male
connector, terminals 1,2,PE.
If regulation by hygrostat is needed, simply connect the
two connector parts and choose pos. ”auto” on the se-
lector switch.
As hygrostat we recommend our DR10*) - 4512.600. Or
our electronic hygrostat DA20 - 4512.601.
*) Important:
The DR10 hygrostat must be xed onto a wall or si-
milar and must not be exposed for condensate or
other kind of free liquid.
The hygrostat should be approved for 10A.
ELECTRIC CONNECTION
The dehumidier is connected 230V, 1Ph+N+PE.
The dehumidier has a 2m cable with plug for the power
supply.
THE INSTALLED ELECTRIC HEATER
The PTC type electric heater is only functioning when
air ow through. This is the reason why no thermostats
is installed.
WARNING: DO NOT TOUCH THE ELEC-
TRIC HEATER WHEN SWITCHED ON, AS
IT IS AN UNINSULATED LIVE WIRE.
POWER CONSUMPTION & AIRFLOWS.
The dehumidier is equipped with PTC heaters.
The energy consumption of the PTC–heater is depen-
ding of the air passing through.
At the nominal air ows for the three models, the Amp for
the heater is:
DHA140: 3A, DHA250:6A, DHA360: 8A
The airow and the energy consumption is regulated on
the damper delivered in our standard reg.– duct system
(option).
NOTICE: the energy consumption of the electric hea-
ter in the rst seconds is up to 2x nominal value in
5–10 sec. after switching on the heater.
Special for DHA360:
THE ELECTRONIC TIMER, 10K4 (on delay):
The timer has the following function:
– PTC heater E1 will be switched on 30 sec. after star-
ting–up the dehumidier (on selector switch or by the
hygrostat).
The dehumidier has two PTC heaters, E1 & E2. Both are
the PTC–type, which means that the switch–on Amp is 10A.
When starting up the dehumidier, E2 is immediately
switched on. When E2 has reached its nominal Amp
(app. 5A) E1 is switched on. In this way the switch–on
Amp. is reduced compared to starting up both heaters at
the same time.
►4. INSTALLATION
The dehumidier should be installed indoors, placed on
a wall bracket or some other horizontal basis. It should
be placed on the four pcs shock absorbers underneath
the cabinet.
CONNECTION OF DUCTS/HOSES:
The main air to be dried is normally taken from the room
and through the main air lter in the back plate.
The air intake is common for process air and reg.air.
As standard the dehumidier is delivered with lter/lter
frame for the common air intake.
Reg.–air outlet should be tted with duct or hose, Instal-
led draining away from the dehumidier to allow the con-
densed water to run free. If this is not possible, a DN4
mm hole should be drilled underneath at the lowest part
of the duct.
A damper should be installed too for the adjustment of
the nominal reg.air ow (reading the Ammeter).
Dry air outlet can be connected duct or hose with the
same size as the outlet on the cabinet. See dimensions
on cabinet, FIG. 2, 3, 4.
In general ducts of the same size as placed on the dehu-
midier should be used – or bigger.
►5. COMMISSIONING
ELECTRIC
Before starting–up the dehumidier, check that all elec-
tric connections are made correctly.
If this is OK, just connect the plug into the electric switch,
and switch on.
DHA140:
The dehumidier has 2 toggle switches:
– the left one: 0/I (start/stop),
– the right one: Man/Auto (Auto = hygrostat controlled).
DHA250, 360:
The selector switch SA1 has 3 positions:
– auto = operation controlled by a hygrostat
– 0 = switched off
– man = continuous operation
“Man” means continuous operation.
Especially at ”auto” (with connected hygrostat):
– If it does not start–up, it can be caused by the hyg-
rostat.
– If the actual %RH is lower than the set value, the hy-
grostat contacts are open.
This can be checked like this:
– adjust the hygrostat to 20%RH, and the dehumidier
should then be operating
– adjust the hygrostat to 90%RH, and the dehumidier
should stop operating.
►6. AIR FLOWS.
Air ows should be adjusted.
The dry air ow should be adjusted for the nominal m3/h
for obtaining data from the capacity diagram.
If lower dew points are wanted, you need to adjust the
dry air ow to values lower than nominal.
HOW TO ADJUST THE AIRFLOWS:
– the dry air ow can be adjusted on the optional damper
in the dry air outlet. The airow must be measured be

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measured and adjusted on the damper for the nominal
value.
Free blowing, the capacity in kg/h will increase: If the
demand for very dry air is not needed, the dehumidier
should then operate free blowing
– the reg.– air ow can be adjusted on the damper in
the reg.–air outlet (option). Start–up with the damper
in the closed position, opening until the Ammeter in-
dicates:
DHA140: 3A, DHA250:6A, DHA360: 8A
Notice: DHA140 has no Ammeter installed and the Amp
must be measured using an Ampere instrument.
IMPORTANT :
Reg.–air ow always has to be controlled. Check the
reg.–duct for allowing free blowing of the reg.–air.
Check that the reg.–air duct is installed draining from the
dehumidier.
SPECIAL FOR DHA360:
STARTING–UP OF THE HEATERS:
The two heaters E1 & E2 starts up with 10K4 delaying
E1 with 30 seconds.
On the Am–meter this will be indicated like this:
– when the dehumidier is switched on, the Am.meter
shows 10A in app. 5 sec., and fall down to 5A.
– after 30 sec. E1 is switched on and the Ammeter
show app. 18A for 5 sec., and then it fall down to
8,00A with the reg–air correctly adjusted.
With the electrical settings and air ows adjusted, the
dehumidier will then operate automatically by means of
the internal control– and safety functions – controlled by
an external hygrostat.
►7. MAINTENANCE
The DHA dehumidiers only needs a minimum of main-
tenance. All components are service free, which means
no lubrication or adjustment.
Only three things should be checked under normal ope-
ration:
– air lter should be replaced at least every 2 months
if stationary installed. At renting the dust level might
be high and the lter must be replaced often – and
the cabinet and rotor should be cleaned after each
period,
– the rotation of the rotor should be checked once a
month,
– the power consumption of the electric heater should
be checked often (reading on the Ammeter, Excl.
DHA140)).
Rotation of the rotor can be checked through the dry air
outlet if no duct is connected). The rotor should then turn
clockwise.
If the rotor rotates during operation, and the energy con-
sumption of the electric heater shows nominal Amp, you
can be almost sure that the dehumidier is operating at
an optimum. We nevertheless recommend some peri-
odic verication of the entire dehumidier, to see if all
internal functions are OK and checking of gaskets and
moving parts for wear and tear.
This will ensure that the capacity is on its maximum, and
thus won’t waste any energy.
►8. TROUBLE SHOOTING
IF THE DEHUMIDIFIER DOES NOT START
WHEN ELECTRIC CONNECTED:
► check the external fuse
IF THE DEHUMIDIFIER IS NOT OPERA-
TING IT IS PROBABLY THE EXTERNAL
HYGROSTAT WHICH HAS BROKEN:
► This is a normal situation when the desired humidity
is obtained. To check: adjust the hygrostat for 20%RH,
and the dehumidier should start operating. Adjust again
for the desired humidity.
IF THE DESIRED HUMIDITY IS NOT OB-
TAINED:
► The problem can be the dehumidier – or the oth-
er parts in the total installation ( room tightness, hyg-
rostat...). To verify this, check:
– rotation of rotor ?
– the dry air should be 15–20°C warmer than the inlet
main air. If it is cold it could indicate that the rotor is
not turning caused by broken drive belt or the motor
has stopped.
– by hand feel the temperature of the reg. outlet air, and
feel the airow. The temperature is depending on the
inlet conditions, but should be 40–60°C.
► If the temperature is higher it could indicate that the
rotor is not turning.
► Check the Ammeter reading, must be nominal value:
DHA140: 3A *), DHA250:6A, DHA360: 8A
*) no Ammete
If it is cold and Ammeter shows 0A, the electric heater
might need replacement.
THE UNIT IS TOO NOISY:
► Check whether the unit is sitting on a level surface.
THE UNIT IS LEAKING:
► Make sure the unit is in good shape.
► If you are not using continuous drainage, make sure
the rubber plug (at the bottom of the unit) is in its posi-
tion.
►9. SERVICE/REPAIR
SAFETY INSTRUCTION
Before opening the dehumidier, make sure that the
electric power is switched off on the main switch. Pull
the power plug to be sure.
REPLACING THE ELECTRIC HEATERS
DHA140:
Remove the cabinet top cover.
Remove the internal hose for the reg–air outlet.
Release the total internal assembly, and pull it out of the
cabinet.
The PTC heater is now accessible for replacing.
DHA250, DHA360:
When the small cover in the front of the dehumidier is
removed, the two PTC heaters are accessible for repla-
cing.

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REPLACING OF GEARMOTOR, AMMETER,
HOURCOUNTER, SELECTOR SWITCH
Remove the cabinet top cover.
Remove the cabinet front cover. All cables to the dehumi-
dier (fan, gear motor and heaters) are to be unscrewed
by the terminals.
Now the cabinet front cover is free to be unscrewed and
the components accessible for replacing.
REPLACING OF FAN
DHA140:
Remove the cabinet top cover.
Remove the internal hose for the reg–air outlet.
Release the total internal assembly, and pull it out of the
cabinet.
The fan is now accessible for replacement.
DHA250, DHA360:
Remove the cabinet top plate. The fan is placed on the
fan plate, and can easily be pulled up and out of the ca-
binet.
Disconnect the electric connection (separate the plug).
REPLACING OF ROTOR
DHA140:
Remove the cabinet top cover.
Remove the internal hose for the reg–air outlet.
Release the total internal assembly, and pull it out of the
cabinet.
The rotor is now accessible for replacement.
DHA250, DHA360:
Remove the top plate and pull the fan up and out of the
cabinet.
Remove the hose by pulling it off the duct connections
Remove the two springs on the small shafts by unscre-
wing the screws
Unscrew the screw in the rotor shaft, remove the washer
and the spring.
Now the dividing plate with the reg.air connector can be
pulled off the shafts, and the rotor is free for replacing
too.
REPLACING THE FILTER
For replacing the lter in the air inlet, remove the screws
and the net. Now the lter can be taken out and a new
one installed.