Dehutech 450, Technical Manual

Page 1: ...DEHUMIDIFIER DehuTech 450 Technical Manual Valid from serial no 030311 2002 DehuTech AB w w w m e g a b u y ...

Page 2: ...chnical specifications SS EN 60335 1 issue 2 Electrical domestic appliances general requirements SS EN 60335 2 40 issue 1 Specified requirements for electrical heat pumps air conditioning units and dehumidifiers SS EN 60335 2 40 A51 issue 1 Specified requirements for electrical heat pumps air conditioning units and dehumidifiers amendments SS EN 60335 1 T1 T2 T3 T4 T5 according to conditions in di...

Page 3: ...he dehumidifier 7 Process and dry air with the dehumidifier installed in the dehumidified room 7 Process and dry air with the dehumidifier installed outside the dehumidified room 7 Duct connection for basement installation 7 Temporary installation 8 Electrical installation 8 Commissioning 9 Maintenance 10 Filter 10 Rotor 10 Electrical motors 10 Heater 10 Rotor drive belt 10 General summary of main...

Page 4: ...rom the mains prior to opening any service panel Prior to servicing the dehumidifier must be left to cool down for at least 15 minutes after operation The service panels should remain closed except when serviceing is carried out The dehumidifier can only be used for dehu midification of air at atmospheric pressure Never use the dehumidifier without the filters as the desiccant rotor can become con...

Page 5: ...f the desiccant rotor Two fans inside the dehumidifier create air streams which travel trough the desiccant rotor in opposite directions The larger air volume the process air passes through the slowly rotating silica gel rotor Silica gel is a hygroscopic material adsorbing water vapour direct from the air When pass ing through the rotor the humidity of the air is reduced whilst the moisture conten...

Page 6: ... belt tension device keeps the belt in place and main tains tension to prevent belt slip Correct opera tion of the drive system and direction of rotation can be checked by opening the top panel The centre hub of the rotor is equipped with ball bearings The rotor shaft is made from stain less steel The complete rotor part can easily be removed and lifted as one piece out from the casing Filter The ...

Page 7: ...ts from entering the dehumidi fier No insulation is needed and the duct can slope up or downwards In some installations as an alternative the reactivation air can be taken from the installation room for this alterna tive no duct connection is needed Process and dry air with the dehumidifier installed in the dehumidified room When the dehumidifier is installed in the dehu midified room it would nor...

Page 8: ...d construction to be dried The complete room could be dehumidified or just the dam aged part For the later option plastic sheet is used to cover the damaged area and the dry air is supplied under the sheet For both options the wet air must be exhausted out from the building via flexible duct or alternatively connected to the general exhaust ventilation system for the building Electrical installati...

Page 9: ...he socket 9 Select the MAN position on the operation switch black of the dehumidifier Switch the main switch orange to the ON posi tion for 3 4 seconds Check that the rotor is slowly rotating the fans are starting and that the orange lamp in the main switch lights up Turn OFF the dehumidifier 10 Mount the service panel and ensure it seals properly to the casing 11 The dehumidifier is now ready for...

Page 10: ...air should be the first choice With severe contamination the rotor can be washed with water Cleaning with water is no routine matter please contact DehuTech AB or a local distributor prior to this procedure Check the rotor bearing and the rotor surface once a year Electrical motors The electrical motors are equipped with ball bearings The bearings are designed to last the life of the motor and the...

Page 11: ...nsport damage The dehumidifier should be protected from rain and snow The dehumidifier should always stand upright on its feet Never put other goods on top of the dehu midifier Transport and lift the dehumidifier by the two handles on each side of the transporta tion box Transportation Filter Rotor Bearing Motors Rotor drive Heater Sealings On demand Every 6th month Every 12th month w w w m e g a ...

Page 12: ...y Too large air volume Rotor does not rotate Reactivation heater No power supply Check fans and motors Check air volumes and dampers Check drive motor Check reactivation heater Check main fuse Dehumidifier does not start No control circuit Faulty control circuit Fuse for controls faulty Check control fuses Check external start stop signal Check electrical components Rotor does not rotate Drive bel...

Page 13: ...nge without notice DehuTech 450 CAPACITY DIAGRAM 0 5 10 15 20 0 5 10 15 20 XP g kg X T g kg 0 5 10 15 20 Temperature rise o C tp 30 C tp 20 C tp 10 C EXAMPLE Process air xp 9 0 g kg tp 20 C giving Dry air xT 5 g kg tT 20 14 2 34 2 C w w w m e g a b u y ...

Page 14: ...umidification capacity 2 2 kg h at 20 ºC and 60 RH See performance chart for other data Dry air flow 450 m3 h freeblowing Wet air flow 120 m3 h freeblowing Power supply 3 5 kW 1 x 230 V 50 Hz Current 15 2 A connection fuse 16 A Weight 24 kg Noise level 63 dB A w w w m e g a b u y ...

Page 15: ... Drive belt HTD 1270 5M09 1 Process air fan G2E 160 AY47 01 1 Capacitor for proc ess air fan 6 µF 400 V 1 Wet air fan with capacitor G2E 120 AR77 90 1 Heater PTC HR AB PH2PA24014711 230 V 2 1 Wet air duct Heat resistant flexcord Ø80 1 Rotor PPS 450 1 Belt tensioning 1 Process air filter AAF R29 EN779 G3 220 x 420 mm 1 3 React air filter AAF R29 EN779 G3 220 x 195 mm 1 3 Toggle switch 2x1 pol elect...

Page 16: ...ooled condenser If a condenser is to be used connect the con denser fan between terminal P1 3 and P1 6 Subject to change without notice DehuTech 450 Black Brown Blue Yellow Green Black 3 Blue 6 Yellow Green Yellow Green Name Component S1 S2 On Off Man Auto switch h Runtime meter HS Humidistat A Amperemeter P1 Terminal block 7 pin E React heater M1 Drive motor rotor C Capacitor P2 P3 Terminal block...

Page 17: ...1 IMO 7 Amperemeter A 25A IP54 1 Tälje mätinstrum 8 Heater 230 V E PH2PA24014711 2 Victon Ltd 9 Terminal male 7 pin P1 PC 4 7 ST 7 62 1 Phoenix Contact 10 Terminal female 1 pin P1 PCVK 4 7 62 7 Phoenix Contact 11 Terminal male 4 pin P2 P3 sls 5 08 4B sn or 2 Weidmüller AB 12 Terminal female 4 pin P2 P3 sls 5 08 4 sn or 2 Weidmüller AB 13 Terminal block 2 pin P4 MA2 5 5 1 14 Blind panel 48 x 48 111...

Page 18: ...Notes DehuTech AB Enhagsslingan 23 S 187 40 TÄBY Sweden Tel 46 0 8 792 04 08 Fax 46 0 8 792 55 59 E mail info dehutech com Website www dehutech com 18 Subject to change without notice DehuTech 450 w w w m e g a b u y ...