
User Manual DFRA Series | 
 
 
Contents 
 
1. Introduction. ...........................................................................................3 
2. Safety Instructions..................................................................................4 
3. Transport and storage............................................................................5 
4. Operating principle .................................................................................6 
5. Identification and coding of the model or equipment...............................7 
5.1 Rating plates.................................................................................................9 
6. Main components.................................................................................12 
7. Operating limits ....................................................................................14 
8. Components technical data..................................................................15 
8.1 Rotor...........................................................................................................15 
9. Installation............................................................................................16 
9.1 Location.......................................................................................................16 
9.2 Service spaces............................................................................................16 
9.3 Air ducts......................................................................................................23 
9.4 Connecting thermal fluids: steam reactivation battery..................................24 
9.5 Connecting the fluid fuel conduit to the gas reactivation heater...................26 
9.6 Connecting thermal fluids: additional batteries.............................................28 
9.7 Connection to the mains power supply........................................................31 
9.8 Control and signalling connections..............................................................33 
9.9 Flow adjustment..........................................................................................35 
10. Commissioning.....................................................................................38 
11. General maintenance...........................................................................41 
12. Maintaining of the desiccant rotor.........................................................42 
13. Maintaining of the air filters...................................................................43 
14. Maintaining of the traction system ........................................................44 
14.1 Traction belt replacement (disassembly and assembly)...............................44 
 14.1.1 Disassembly..........................................................................................44 
 14.1.2 Assembly ..............................................................................................50 
15. Declaration of conformity......................................................................56 
16. Guarantee............................................................................................57