Demon Tempest 1, Instruction Manual, Page: 38 / 56

Electrode Setting Details
The electrodes should be set according to the picture. 50% of the ceramic
insulation should be inside the boiler and 50% outside. The electrode gap
should be approximately 6mm and the tips shold not be in the fuel spray.
Common problems - fuels filters and nozzles are not changed regularly enough.
The nozzle is a precision instrument that can be damaged by small particles of
solid matter in the fuel that it is not possible to filter out. Nozzles will not atomise
the fuel correctly leading to a longer flame path which you can see by flames
visible near the top of the chimney. To remedy this empty the fuel tank and fill
with clean fuel, change the filter and then change the fuel nozzle. Clean the
electrodes and grind the tips to reveal new metal. Reset and refit and run the
boiler with the gun removed for 10 minutes. This will burn off any excess fuel
and clean the boiler tubes.
Service the boiler frequently for reliable running, an unserviced boiler does not
heat the water correctly wasting your money!!
Burner Head Complete DB002200