68 | Inspection and maintenance
Greenstar FS
6 720 810 590 (2015/05)
▶ Remove the burner and clean the components.
Fig. 86 Burner
▶ Reinstall the burner in reverse order, including a new gasket.
▶ Adjust the gas-air ratio ( page 63).
15.1.6 Heat exchanger block inspection and cleaning
▶ Remove the inspection cover ( page 8) and any sheet metal insert
below, if installed.
▶ Determine degree of soiling of the heat exchanger through visual
inspection.
If mechanical cleaning is required:
For cleaning the heat exchanger, use Bosch main heat exchanger
gaskets, the heat exchanger brush and the heat exchanger cleaning
blade which are available as spare parts.
▶ Remove the condensate trap (steps 1 and 2) and place a suitable
container underneath.
Fig. 87 Removing the condensate trap
▶ With the cleaning blade, clean the heat exchanger block from the
bottom to the top.
Fig. 88 Cleaning the heat exchanger with the cleaning blade
NOTICE: Damage to the coating of the heat exchanger.
▶ Cleaning of the heat exchanger should not be
necessary until five years after the initial
commissioning.
▶ Only use a Bosch cleaning blade and Bosch cleaning
brush ( page 69).
▶ Only clean heat exchanger in case if soiling is clearly
visible.
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