DBW 2010 / 2016 9Repair
914
9.2.10 Replacing high-pressure nozzle
9.2.10.1 Removal
1. Swing away burner head (see 8.5.1).
2. Screw off high-pressure nozzle (11, Fig. 912) and
remove.
3. Carry out works on stripped down components (see
9.1.1).
9.2.10.2 Installation
1. Screw in high-pressure nozzle (11, Fig. 912) and tighten
to 20 Nm.
2. Swing in burner head (see 8.5.1).
9.2.11 Replacing nozzle holder pre-heating unit
9.2.11.1 Removal
1. Swing away burner head (see 8.5.1).
2. Pull off clamping yoke (3, Fig. 912) and remove.
3. Disconnect electrical connection.
4. Pull heating cartridge (2) out of nozzle holder (15) later-
ally and remove.
5. Carry out works on stripped down components (see
9.1.1).
9.2.11.2 Installation
1. Make the electrical connection.
2. Slide heating cartridge (2, Fig. 912) into nozzle holder
(15) and secure with clamping yoke (3).
3. Swing in burner head (see 8.5.1).
9.2.12 Replacing ignition spark generator
9.2.12.1 Removal
1. Swing away burner head (see 8.5.1).
2. Lever connector off electrodes.
3. Remove screws (5) from ignition spark generator (6) and
take off ignition spark generator.
4. Disconnect electrical connections.
5. Carry out works on stripped down components (see
9.1.1).
9.2.12.2 Installation
1. Make the electrical connections.
2. Move ignition spark generator (6, Fig. 911) into installa-
tion position and secure with screws (5).
3. Tighten screws to 0.8 Nm.
4. Guide ignition cable (7) through grommets into ignition
spark generator (6).
5. Slide ignition cable onto ignition electrode (9) and secure
with retaining clips (8).
6. Swing in burner head (see 8.5.1).
9.2.13 Replacing flame monitor
9.2.13.1 Removal
1. Swing away burner head (see 8.5.1).
2. Disconnect electrical connection from flame monitor (10/
10a, Fig. 912).
3. Remove screw (14) and flame monitor (10) or clip out
flame monitor (10a).
4. Carry out works on stripped down components (see
9.1.1).
9.2.13.2 Installation
1. Move flame monitor (10, Fig. 912) into installation posi-
tion and fasten with screw (14) or clip in flame monitor
(10a).
2. Tighten screws to 1.3 Nm.
3. Make the electrical connection.
4. Swing in burner head (see 8.5.1).
9.2.14 Replacing ignition electrodes
9.2.14.1 Removal
1. Swing away burner head (see 8.5.1).
2. Remove screw (8, Fig. 912).
3. Take off washer (7) and clamp (6) and remove.
4. Remove snap ring (13) and take off disc (12) and remove.
5. Push back insulating grommets onto ignition cable if nec-
essary.
6. Lever retaining clips (8) off of ignition electrodes (9) and
remove.
7. Take off ignition electrodes (9) and remove.
8. Carry out works on stripped down components (see
9.1.1).
9.2.14.2 Installation
1. Lay on disc (12, Fig. 912) and secure with snap ring (13)
if necessary.
2. Guide in ignition electrodes (9) through disc (12), align
and fasten with clamp (6), washer (7) and screw (8).
3. Tighten screw (8) to 1.7 Nm.
4. Fit ignition cable (4) and secure with retaining clips (8).
5. Slide insulating grommets onto ignition electrodes if nec-
essary.
6. Swing in burner head (see 8.5.1).
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