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Maintenance
6.2 Cleaning
Cleaning should be performed at least twice per year.
Cleaning at intermediate intervals is necessary if the
flue gas temperature rises.
6.2.1 Preparatory work
- Switch boiler off (controller: set switch to "O,"
pull the burner plug)
- Interrupt the fuel supply
- Open the boiler door
- Remove regulators (Figure 13)
- Remove flue gas collector cleaning cover (back)
6.2.2 Cleaning (dry or wet method)
- Clean combustion chamber, 2-pass (cylindrical
tubes), 3-pass (ribbed heating surface) thoroughly
with a brush or spray and then remove any
combustion residue or sprayed liquid from the flue
gas collector and from the combustion chamber.
For wet cleaning:
Treat seals with graphite before carrying out
wet cleaning.
- Dispose of the cleaning fluid (scrubbing liquid) in
accordance with regulations.
6.2.3 Putting into operation again
- Insert the regulators
- Fit cleaning cover
- Close boiler door and reconnect burner plug.
Do not overtighten boiler door screws.
- Reconnect the fuel supply
- Where applicable, refit front cover
- Reset boiler switch to "autom." or "
I
".