![background image](http://html1.mh-extra.com/html/karcher/hds-7-12-m/hds-7-12-m_service-manual_4209114054.webp)
54
English
5.906-432.0 Rev. 00 (06/15)
1 Ignition electrodes
2 Fuel nozzle holder
3 Fuel nozzle
4 Spray angle 45° or 60°, depending on the type of appli-
ance
5 Screw
6 Burner cover
Burner
There is a strong spark created between the two ignition
electrodes to ensure that the injected fuel will ignite.
The necessary ignition voltage is generated by the ignition
transformer.
The exact adherence to the adjustment dimensions is a
basic requirement for the proper function of the burner, for
good exhaust values and the long idle time of the ignition
electrodes.
There is always a ignition spark between the two ignition
electrodes, during cold and hot water operation (continu-
ous ignition).
This is a safety measure, so that injected fuel will be ignited
in any case and cannot accumulate unburned in the on-de-
mand heater (deflagration hazard).
6.24 Burner
Summary of Contents for HDS 7/12 M
Page 14: ...14 English 5 906 432 0 Rev 00 06 15...
Page 60: ...60 English 5 906 432 0 Rev 00 06 15 6 29 Functional diagram vacuuming operation...
Page 125: ...English 5 906 432 0 Rev 00 06 15 125 Circuit diagram 0 089 021 0 HDS 7 12...
Page 126: ...126 English 5 906 432 0 Rev 00 06 15 Circuit diagram 0 089 025 0 HDS 8 18 HDS 9 18...
Page 128: ...128 English 5 906 432 0 Rev 00 06 15 Circuit diagram 0 088 952 0 HDS 10 20 HDS 12 18...
Page 130: ...130 English 5 906 432 0 Rev 00 06 15 Circuit diagram 0 089 9026 0 HDS 13 20...