Webasto Thermo 90

List of Contents Thermo 90
II
6 Functional Tests
6.1 General........................................................................................................................
......................... 601
6.2 Adjustments .....................................................................................................................
..................... 601
6.2.1 Adjustment of the CO
2
Contents ................................................................................................ 601
6.3 Components Testing...........................................................................................................
.................. 601
6.3.1 Temperature Sensor Resistanc
e Check..................................................................................... 601
6.3.2 Glow Plug Resistance Test.............................
............................................................................ 601
6.3.3 Flame Sensor Resistance Test.................................................................................................
.. 601
6.3.4 Combustion Air Fan Test.......................................................................................................
..... 601
7 Circuit Diagrams
7.1 General........................................................................................................................
......................... 701
8 Servicing
8.1 General........................................................................................................................
......................... 801
8.2 Work on the Heater.............................................................................................................
.................. 801
8.3 Work on the Vehicle............................................................................................................
.................. 801
8.4 Heater Test Run...............................................................................................................
..................... 801
8.5 Servicing ......................................................................................................................
......................... 801
8.6 Visual Inspections and Installation Regulations
.................................................................................... 803
8.6.1 Connection to the Vehicle's Cooling System.............................................................................. 803
8.6.2 Connection to the Vehicle's Fuel System ..........
......................................................................... 803
8.6.3 Dosing Pump..................................................................................................................
............ 805
8.6.4 Fuel Filter..................................................................................................................
.................. 806
8.6.5 Combustion Air Supply ......................................................................................................
......... 806
8.6.6 Exhaust Line................................................................................................................
............... 806
8.7 Removal and Installation.
...................................................................................................................... 807
8.7.1 Heater, Removal and Installat
ion................................................................................................ 807
8.7.2 Replacement of Circulation Pump ..............................................................................................
807
8.7.3 Replacement of Temperature Limiter
......................................................................................... 807
8.7.4 Replacement of Temperature Sensor...
...................................................................................... 807
8.7.5 Replacement of Combustion Air Fan.................
......................................................................... 807
8.8 First Operation .................................................................................................................
..................... 807