4.5.4 Cleaning the flue gas recirculation (FGR) duct
(Pos. D
⇨ See "Periodic inspection and cleaning" [page 42]
)
1. Remove the pipe insulation (supplied by the customer) from the FGR duct
1. Remove the maintenance openings from the FGR duct
2. Remove the maintenance openings from the FGR boxes
3. Check the entire FGR duct and clean if necessary
– Tip: use an ash vacuum!
4.5.5 Checking the heat exchanger
(Pos. E
⇨ See "Periodic inspection and cleaning" [page 42]
)
1. Open the reversing chamber door
2. Check the heat exchanger pipes and if necessary clean thoroughly with a brush or
another suitable cleaning device
NOTICE! If the boiler features an automatic compressed air cleaner (optional), the
cleaning interval increases accordingly, however the cleaning procedure set out above
must be carried out at least once a year.
Servicing
4
Periodic inspection and cleaning (approx. 1,000 hrs)
Operating Instructions | B1300015_en
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