background image

Air Dehumidification 

 
The processes that take place during air dehumidifica-
tion are based on physical laws. We will try to describe 
these in a simplified form to give you a rough idea about 
the principle of air dehumidification. 

There are two different ways of drying the buildings: 
 
1. B y   h e a t i n g   a n d   e x c h a n g i n g   t h e   a i r :

 

The ambient air is heated to absorb humidity and to 
be carried off to the outside. However, the total gen-
erated energy is lost with the carried off humid air. 

 
2. By dehumidifying:

 

The humid air in the closed room is continuously de-
humidified according to the condensation principle. 

 
Dehumidification has a decisive advantage regarding 
energy consumption:  
Energy is exclusively needed for the existing room vol-
ume. The mechanical heat released during the dehu-
midification process increases the room temperature 
slightly. 

When used correctly the air dehumidifier consumes 
only approx. 25 % of the energy to be supplied accord-
ing to the “heating and ventilation” principle. 

As you can see the corrosion speed is insignificant at a 
relative air humidity of less than 50 % and at a humidity 
rate of less than 40 % it can even be neglected. When 
the relative humidity exceeds 60 % corrosion speed in-
creases considerably.  

This limit regarding damages caused by humidity is also 
applicable to many other materials, such as powdery 
substances, packing materials, wood, and electronic  
apparatuses. 

 Relative Air Humidity 
 

Ambient air is a gas mixture and it always contains a 
certain rate of water in the form of water vapour. 

This percentage of water is indicated in g per kg of dry 
air (absolute water content). 

1 m³ of air weighs approx. 1.2 kg at 20° C. 

Depending on the temperature each kg of air can only 
absorb a defined quantity of water vapour. When this 
quantity has been absorbed, the air is “saturated” and 
has a relative humidity of 100 %. 

By relative air humidity we understand the relation be-
tween the percentage of water vapour contained in the 
air at the moment concerned and the maximum possi-
ble percentage of the water vapour, based on equal 
temperatures. 

The capacity of air to absorb water vapour increases 
with raising temperatures. This means that the maxi-
mum possible (= absolute) water content is increased 
with increasing temperatures. 

The Use of REMKO Air Dehumidifiers 

 

No matter how well doors and windows are insu-
lated, wetness and humidity penetrate even through 
thick concrete walls. 

The water quantities required for binding regarding 
the production of concrete, mortar, plaster, etc. need 
in some cases 1 or 2 months to diffuse. 

And even the humidity that penetrates into the brick-
work after floods and inundations is released very 
slowly. 

E.g. this is also the case regarding humidity con-
tained in stocked materials. 

The humidity that emanates from parts of buildings or 
materials (water vapour) is absorbed by the ambient air. 
Consequently the humidity content of the air increases 
which results in corrosion and in the formation of mil-
dew, decay, flaked off paint coats and other undesired 
damage caused by humidity.  

E.g. the following diagram shows in an exemplary way 
the corrosion speed of metal at different air humidity 
rates.

 

Temp. °C

 

Water vapour content in g/m³ at an air humidity of

 

40%

 

60%

 

80%

 

100%

 

-5

 

1,3

 

1,9

 

2,6

 

3,3

 

+10

 

3,8

 

5,6

 

7,5

 

9,4

 

+15

 

5,1

 

7,7

 

10,2

 

12,8

 

+20

 

6,9

 

10,4

 

13,8

 

17,3

 

+25

 

9,2

 

13,8

 

18,4

 

23,0

 

+30

 

12,9

 

18,2

 

24,3

 

30,3

 

Summary of Contents for ETF 100

Page 1: ...REMKO powerful like a bear REMKO ETF 100 150 Mobile Dehumidifier Edition GB M02 Operation Technology Spare Parts ...

Page 2: ......

Page 3: ...without our prior consent Subject to alterations Operating Instructions Contents page Air Dehumidification 4 Safety Instructions 6 Unit Description 7 Installation 8 Starting 8 Discard the Unit 10 Transport Instructions 10 Cleaning the Filter 11 Contents page Maintenance and Service 11 Exploded View 12 Spare Part List 13 In Case of Troubles 14 Technical Data 14 Wiring Diagram 14 Maintenance and Ser...

Page 4: ...r kg of dry air absolute water content 1 m of air weighs approx 1 2 kg at 20 C Depending on the temperature each kg of air can only absorb a defined quantity of water vapour When this quantity has been absorbed the air is saturated and has a relative humidity of 100 By relative air humidity we understand the relation be tween the percentage of water vapour contained in the air at the moment concer...

Page 5: ...On the other hand energy is re leased when gas is liquefied and this energy is called condensation heat The energy rate of evaporation and condensation heat is identical For water this is 2250 kJ kg 4 18 kJ 1kcal This shows that a relatively high energy rate is released through water vapour condensation If the humidity to be condensed is not generated by evaporation within the room but fed from th...

Page 6: ...condensation tank before moving the unit Do not set the unit up near curtains or drapes Maintain a safety distance of at least 50 cm min 50 cm Ensure that the unit is set up at a safe distance from flammable mate rials Ensure that the dehumidifier is sol idly set up on a level surface The unit may only be operated in an upright position Do not attempt to use the unit while lying on its side or in ...

Page 7: ...a tion of the room air through the unit will thus reduce the humidity in the room to the desired relative humidity Depending on the air temperature and relative humidity condensation either drips into the condensation trap continuously or during the periodic defrosting phases From there it passes through the integrated outlet into the condensation tank located below it Condensation can also be rel...

Page 8: ...tall the unit directly near radiators or other heat sources Make sure to keep the room to be dried and dehumidified closed so that air from outside cannot penetrate into it Entering into and going out of the room should be avoided if possible You can obtain better air circulation if you place the unit at a height of approx 1 m Important Hints Make sure that appropriate measures for mainte nance an...

Page 9: ...rol lamp OPERATION in dicates the correct function of the unit BETRIEB OPERATION To open the flap tap the corrugated surfaces The top side will tip downward per mitting you to adjust the air flow direc tion as required Ensure that the air outlet is unob structed and that sensitive objects such as plants are not directly in the path of the air stream Remove the small grille lid to fill the dispense...

Page 10: ...rform these steps in reverse order Remove the plug S from the connector on the rear of the unit S Attach a sufficiently long hose to the connector The condensa tion can now be allowed to flow into a drain for example during unattended continuous opera tion To prevent spillage ensure that the plug is cor rectly positioned G Remove the condensation tank and close the drain A below the condensation t...

Page 11: ...ook the filter holder at the rear only ETF 150 5 Remove only ETF 150 the charcoal filter and replaced as required The charcoal filter insert cannot be cleaned Charcoal filter Filter holder Filter frame with filters 6 Clean the air intake filter in the filter frame With lukewarm water Dirty side down With a vacuum cleaner Dirty side up 7 Clean heavily contaminated fil ters in lukewarm max 40 C soap...

Page 12: ...12 Exploded View We reserve the right to make changes to the design and dimensions in the interest of technical progress ...

Page 13: ...essor complete 1103548 38 Accumulator 1103547 39 Rear panel 1103555 40 Support brace 1103538 41 Solenoid 1103530 42 Fan cover 1103539 43 Dry filter 1103549 44 Control board 1103541 45 Display board 1103542 46 Power board 1103543 47 Transport handle 1103544 No Designation Ref No ETF 150 Ref No 1103502 1103503 1103504 1103505 1103506 1103507 1103508 1103509 1103545 1103501 1103510 1103511 1103512 11...

Page 14: ... than the humidity in the room Unit running no condensation formation Check room temperature The working range of the unit is between 6 C and 32 C Check relative humidity Min 40 Check hygrostat setting and choose a lower setting if required Check air intake filter charcoal filter for contamination Clean or replace as required Check exchanger blades for soiling Lei it clean as required Vaporizer is...

Page 15: ...e 7 Date 8 Date 9 Date 10 Date Signature Signature Signature Signature Signature 11 Date 12 Date 13 Date 14 Date 15 Date Signature Signature Signature Signature Signature 16 Date 17 Date 18 Date 19 Date 20 Date Signature Signature Signature Signature Signature Unit cleaned exterior Unit cleaned interior Condenser cleaned Vaporizer cleaned Fan blades cleaned Dust filter cleaned or replaced Protecti...

Page 16: ...REMKO GmbH Co KG Klima und Wärmetechnik D 32791 Lage Im Seelenkamp 12 D 32777 Lage PO Box 1827 Phone 49 5232 606 0 Fax 49 5232 606260 ...

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