Technical data

Contents DBW 2010 / 2012 / 2020 / 2022 / 300 / 350
II
5.4.3 The heating device starts to work only after a few trials.......................................................................506
5.4.4 The heating device stops by itself while working..................................................................................506
5.4.5 The heating device produces soot (dense black smoke comes out) ...................................................507
5.4.6 The heating device produces light colored dense smoke ....................................................................508
5.4.7 The heating device cannot be shut off..................................................................................................508
6 The Function Test......................................................................................................................................................601
6.1 General ..............................................................................................................................................................601
6.2 The Settings.......................................................................................................................................................601
6.2.1 Setting the CO
2
proportion....................................................................................................................601
6.3 Testing the individual elements .........................................................................................................................602
6.3.1 The resistance check of the heat sensor (only the heating devices equipped with the control device
1563/64).............................................................................................................................................................602
6.3.2 The resistance test of the flame regulator ............................................................................................603
6.3.3 Checking and setting the ignition electrodes ........................................................................................604
6.3.4 Testing the induction bobbin..............................................................................................................................604
6.3.5 Testing the fuel pump ........................................................................................................................................605
6.3.6 Testing the burner engine..................................................................................................................................605
6.3.7 Testing the magnetic valve................................................................................................................................605
6.3.8 Testing the front heating element of the nozzle block.......................................................................................605
7 The Circuit Diagrams.................................................................................................................................................701
7.1 General ..............................................................................................................................................................701
8 The Service Tasks .....................................................................................................................................................801
8.1 General ..............................................................................................................................................................801
8.2 The tasks that will be carried out on the heating device ...................................................................................801
8.3 The tasks that are carried out on the vehicle ....................................................................................................801
8.4 The test operation of the heating device ...........................................................................................................801
8.5 The Maintenance Tasks ....................................................................................................................................801
8.5.1 Opening and closing of the burner head to the side.............................................................................802
8.6 The Visual Examination or the Assembly Instructions ......................................................................................803
8.6.1 The connection to the cooling system of the vehicle............................................................................803
8.6.2 The connection to the fuel system of the vehicle .................................................................................803
8.6.3 The supply of combustion air................................................................................................................805
8.6.4 The exhaust line ...................................................................................................................................805
8.7 Dismantling and mounting .................................................................................................................................806
8.7.1 Heating device, disassembling and installation....................................................................................806
8.7.2 The replacement of the temperature constrainer .................................................................................806
8.7.3 The replacement of the heat sensor.....................................................................................................806
8.7.4 The replacement of the thermal fuse....................................................................................................807
8.7.6 The replacement of the fan thermostat.................................................................................................807
8.7.7 The replacement of the thermal fuse element......................................................................................807
8.7.8 The replacement of the burner head ....................................................................................................807
8.7.9 The replacement of the induction bobbin .............................................................................................807
8.7.10 The replacement of the flame regulator................................................................................................807
8.7.11 The replacement of the combustion chamber ......................................................................................807
8.8 Commissioning ..................................................................................................................................................808
8.8.1 Evacuating the air from the water circuit ..............................................................................................808
8.8.2 The evacuation of air from the fuel supply system ...............................................................................808
9 The Repair ..................................................................................................................................................................901
9.1 General ..............................................................................................................................................................901
9.1.1 The measures pertaining to the elements that are dismantled to parts ...............................................902