Spheros thermo 231, Workshop Manual

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List of Contents Thermo 230 / 231 / 300 / 301 / 350
IV
List of Figures
301 Functional Sequence (heaters with control unit 1572) .................................................................................... 304
302 Functional Sequence (heaters with control unit 1572D) ................................................................................. 305
501 General Fault Symptoms ................................................................................................................................ 501
701 Automatic Control Circuit with Control Unit 1572 and Switch ......................................................................... 702
702 Automatic Control Circuit with Control Unit 1572 and Timer (Triple Timer) .................................................... 703
703 Automatic Control Circuit with Control Unit 1572D and Switch....................................................................... 704
704 Automatic Control Circuit with Control Unit 1572D and Standard Timer......................................................... 705
705 System Circuit Daimler Chrysler Citaro, Ident.-Nr. 67131................................................................................ 706
706 System Circuit Van Hool, Ident.-Nr. 89401 ...................................................................................................... 707
707 System Circuit O405 / O407 / O408, Ident.-Nr. 91292..................................................................................... 708
708 System Circuit MAN, Ident.-Nr. 89404 ............................................................................................................. 709
709 System Circuit SETRA, Ident.-Nr. 90972 ......................................................................................................... 710
710 Automatic Control Circuit Rail with Control Unit 1572D and Standard Timer and filter heater ........................ 711
801 Swinging Burner Head open ........................................................................................................................... 803
802 Example of a Heater Installation in a Passenger Bus ..................................................................................... 805
901 Temperature Limiter, Temperature Sensor and Burner, Replacement........................................................... 905
902 Combustion Air Fan, Replacement ................................................................................................................. 907
903 Control Unit and Fuel Pump, Replacement..................................................................................................... 909
904 Igniter Box and Flame Sensor, Replacement ................................................................................................ 910
905 Heat Exchanger and Combustion Chamber, Replacement ............................................................................ 912