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Pos. 0 = Unit is switched off 

 

Pos. 1 = Continues operation 

 

80%    = The dehumidifier switches off when  

a humidity of approx. 80% r.h. has  
achieved. And switches on again  
when humidity is higher than 80%. 

 

60%    = The dehumidifier switches off when 

a humidity of approx. 60% r.h. has  
achieved. And switches on again  
when humidity is higher than 60%. 

 

40%    = The dehumidifier switches off when  

a humidity of approx. 40% r.h. has achieved. And switches on again when  
humidity is higher than 40%.   

 

20%    = The dehumidifier switches off when a humidity of approx. 20% r.h. has 

achieved. And switches on again when humidity is higher than 20%.   

 

The smooth setting option of the hygrostat makes a very convenient humidity 
control possible for you. If very precise values are requested, you should match the 
hygrostat with the information on a precise hygrometer. 
 

Please consider: 

Humidity values of a minimum of 40 % - 45 % r.h. can be achieved with a 
condensation dryer. An adsorption dryer is to be employed if lower values are 
required. 
For this purpose, ask your technical consultant. 
 

Optimal climate: 

For living rooms, environmental conditions of 20°-25°C and 50 - 60 % r.h. are 
recommended. 
For building drying, the hygrostat becomes turned at continues running (POS. I). 
In the case of the drying rooms with wood equipment (e.g. floors) or paintings, 
antiques and similar things should not be fallen below a humidity of 55%. 
Ask your technical consultant in the case of special applications. 
 

External humidity control 

We also deliver AD 7 optionally with connection option for an external On-/off-switch, 
e.g. through a dew point control or external hygrostat.  
In that case, the device is equipped with our SensorLogic which supplies a floating 
contact and a mains voltage of 24 V. 
An Amphenol-socket is then in the operating tableau instead of the hygrostat. With 
an Amphenol-plug (accessory), your external control can be connected very simply. 
 
 
 
 
 
 

Summary of Contents for AD 740

Page 1: ...Page 1 of 15 Instruction manual _____________________________________ Dehumidifier AD 740 750 770 790 _____________________________________ valid 02 2008...

Page 2: ...50 6 5 4 Operation panel AD 770 790 7 5 5 Description of operation panel 7 5 6 Hygrostat control 7 8 5 7 Condensate outlet AD 740 750 9 5 8 Condensate outlet AD 770 790 9 5 9 Condensate pump option 9...

Page 3: ...er to be able to send the device safe for guarantee repair In order to save space you open simply the adhesive tape with a knife and you fold the carton 2 Mode of functioning The AD air dryer is const...

Page 4: ...tion dryers are intended for the drying of air with atmospheric pressure Risk by accessory Hoses for condensate removal and air filters must be fit expertly and must not take the protective devices of...

Page 5: ...therwise it must be secured against rolling off That dehumidifier can be transported upright or laid flat The upright transportation is to be preferred if possible The appliance must be used exclusive...

Page 6: ...eturn into the compressor We recommend this procedure since it extends the service life of the compressor Put the plug into the socket Check whether the bucket is placed in the unit AD 730 740 standar...

Page 7: ...andard The unit has switched off because the humidity in thet room is ok has achieved the requested value 6 Hygrostat see 5 6 Hygrostat control 7 On Off Switch 8 Make sure a free space in front of air...

Page 8: ...umidity values of a minimum of 40 45 r h can be achieved with a condensation dryer An adsorption dryer is to be employed if lower values are required For this purpose ask your technical consultant Opt...

Page 9: ...ater tank at AD 770 790 optional extra does NOT disconnect the device in the case of full state During unattended using AD 770 790 with built in pump is advisable 5 9 Condensate pump optional Optional...

Page 10: ...ooms of aggressive atmospheres for example ammonia and wood acid In rooms with water which shows a pH value outside of 7 0 to 7 4 Remark In The case of lower pH value corrosion occurs at all metals an...

Page 11: ...NTION When performing any repair or maintenance the general safety rules and provisions must be adhered to In order to guarantee a troublefree function of the dryer the device should be cleaned regula...

Page 12: ...s out of operation Fan and compressor does not run Is the dryer switched on The On Off switch must be in position I and must light up Is the unit supplied with voltage The On Off switch must light up...

Page 13: ...se the dryer needs some time to remove that water and to achieve an acceptable humidity in that room ATTENTION The appliance must be repaired by trained and expert personnel only In the case of interv...

Page 14: ...Page 14 of 15 11 Circuit diagram...

Page 15: ...EN ISO 12100 Safety of Machinery EN 50081 1 92 Electromagnetic Compatibility EMC Basic Specification Emitted Interference EN 50082 1 97 Electromagnetic Compatibility EMC Basic Specification Emitted I...

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