Nortek AB 175E Installation And Operating Manual Download Page 9

Doc No. 702105  Page 9 of 16 

All servicing/maintenance work on this air 
curtain should be carried out by suitably 

qualified person. Before commencing any work 
please ensure that the electricity supplies are 
turned off.  
 

7.0  Tools required. 

 
 
 
 
 
 
7.1 Air distribution fans. 

The air distribution fans can be accessed by 
removing the  three screws along the bottom 
edge of the air inlet grille (Fig.2), and the       
retaining screws securing the hinged lid on the 
underside of the air curtain next to the louvres 
( Fig.3).

 

7. Parts Replacement. 

Fig.5 

Fan closure plate 

Fan outlet 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 

Fig.3 

Fig.4 

Fig.6 

Fan closure plate 

Fan outlet 

The lid can now be hinged down to access the 
fans as shown in Fig.4. 
 

7.1.1 Fan closure plate 

Before individual fans can be removed it will be   
necessary to remove the fan closure plate.    
Remove the retaining screws around the 

 

 

 

 

 

 

perimeter of the plate. (See Figs.5/6) The plate 
can now be removed

Fig.2 

Allen key set 

Adjustable 
 spanner 

Cross point 
 screwdriver 

10mm spanner 

13mm spanner 

Summary of Contents for AB 175E

Page 1: ...Replacement 7 Spare Parts 8 Fault Finding 9 User Instructions 10 WARNINGS 1 This appliance must only be installed by a competent person in accordance with the requirements of the Codes of Practice or...

Page 2: ...g an air curtain is to prevent the influx of cold outside air through a door opening into a heated area Typical applications include large despatch bay doors in factories and warehouses and internal d...

Page 3: ...Doc No 702105 Page 3 of 16 2 Dimensions Diagram 1 Dimensions FRONT VIEW PLAN VIEW R H VIEW...

Page 4: ...ans 3 4 Maximum air volume 9600m3 hr 12800m3 hr Voltage 230V 1PH 50Hz Power rating per fan 1140 W Current per fan 5 2A FLC Start current per fan 12A Power Elements 18kW 24kW Total power consumption 21...

Page 5: ...e air curtains should be bolted together using 3 off M10 set pins nuts and washers fitted through the holes provided in the mounting brackets then suitable support channels not supplied must be fixed...

Page 6: ...R CURTAIN Diagram 4 Support channel multiple air curtains Typical support channels Air curtain 1 Air curtain 2 PLAN VIEW TWIN AIR CURTAINS Factory fitted brackets Support points 4 Installation Details...

Page 7: ...ector switch a high low fan speed selector switch and a heat on off selector switch Panel operation is described in section 10 of this manual user instructions A customer specific control panel wiring...

Page 8: ...ution fans can be accessed by opening the fan access lid as described in section 7 1 Fig 2 Clean off any dust or deposits with a soft brush paying particular attention to the impeller Check that the i...

Page 9: ...the retaining screws securing the hinged lid on the underside of the air curtain next to the louvres Fig 3 7 Parts Replacement Fig 5 Fan closure plate Fan outlet Fig 3 Fig 4 Fig 6 Fan closure plate F...

Page 10: ...equiring removal and disconnect it from its cable mount ed plug socket See Fig 7 The four bolts securing the fan can now be removed as shown in Fig 8 and the fan removed from the air curtain downwards...

Page 11: ...ightly and lifted from the 3 retaining tab slots D See diagram 8 7 2 5 The wiring to the element assembly can now be accessed at the rear of panel E and disconnected after first noting the cable posit...

Page 12: ...date the warranty of the appliance AB 225E 24kW elements full set 100528 AB 175E 18kW elements full set 100527 Thermal cutout 1 per module 900001 8 Spare Parts Item Description Part No 3 speed air dis...

Page 13: ...ntactor and associated wiring All air distribution fans off YES If the fan s still fail to operate normally please contact the Nortek service department YES Check 1 Power supply YES NO Air distributio...

Page 14: ...vice department YES Check 1 Power supply YES NO Elements NO Low heat Check 1 Check current load on all elements Should be balanced If not could be element s open circuit If it is determined that the o...

Page 15: ...Doc No 702105 Page 15 of 16 Notes...

Page 16: ...h to the desired position 10 3 2 Switch on electrical supply to the control panel The panel live lamp will illuminate and the unit will now only operate when the BMS relay or remote switch is closed 1...

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