Remove Burner - Kärcher HDS 5/11 U Service Manual

The boiler floor is made of fire-resistant insulating
concrete. It prevents a radiation of the heat and is
used to reroute the flames.
The adjustment of the burner to good exhaust values
is achieved via the air slider on the blower (air vol-
ume) and with the adjustment screw on the fuel pump
(fuel pressure).
The temperature increase with full water volume is
about 50°C. Assuming the max. supply temperature
of the water of 30°C, the water can be heated to
about 80°C.
An optimal burner performance is only possible if the
heating coil is neither full of soot nor other deposits.
Furthermore, the spark electrodes, the amount of fuel
and the amount of air must be adjusted properly.

5.6.1 Remove burner

In order remove the burner, three screws must be
loosened and the burner must be rotated to the right.
Bend the top of the back wall up slightly and tilt the
burner to remove it.

Disconnect the fuel line and move it to the side.
1 Fuel line
 Remove the screws from the burner cover.
1 Burner cover
2 Screws

Disconnect the cable from the ignition transformer.
18
English 5.906-487.0 Rev. 00 (04/10)
1 Cable, ignition transformer

Pull the top of the back wall up, tilt the burner.
1 Ignition transformer
 Tilt the burner out and remove it.
The burner is assembled in reverse order.