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Inspection and maintenance | 29
6 720 812 900 (2014/10)Uni 3000 F
Insert turbulators ( Fig. 30, [1]) into secondary heating pipes [2].
Fig. 30 Correcting securing of the turbulators
[1] Turbulator
[2] Secondary heating pipes
Align turbulators in such a way that all the ends ( Fig. 31, [2]) point
towards the middle of the combustion chamber.
Fig. 31 Aligning the turbulators
[1] Combustion chamber
[2] Turbulator, folded end
If turbulators are no longer secured sufficiently, correct how they are
secured.
Pull ¾ of turbulator out of secondary heating pipe.
Bend turbulator by 10° – 15°.
Re-insert turbulator into secondary heating pipe.
Recheck how well the turbulator is secured.
Check the gaskets around the burner door and inspection aperture;
replace if necessary.
Check the condition of the insulating rings between the burner door
thermal insulation and the blast tube (filling the annular gap
Fig. 19, page 19).
Close the burner door tightly ( Chapter 4.5, page 18).
7.3.4 Fitting the cleaning cover
Position cleaning cover [3] of the flue gas collector.
Install nuts and washers on the cleaning cover [2].
Fig. 32 Fitting the cleaning cover
[1] Flue gas collector
[2] Nuts and washers on the cleaning cover
[3] Cleaning cover of flue gas collector
[4] Cleaning drain
7.3.5 Wet-cleaning the boiler
When wet-cleaning, use a cleaning agent appropriate for the level of
contamination.
For wet cleaning, follow the same procedure as for cleaning with brushes
( Chapter 7.3, page 28).
Liquid cleaning residues can be drained off through the cleaning drain on
the flue gas collector.
Suitable packing cord/insulating rings are available via
spare parts merchants. A genuine spare parts list is
available online (see last page for details).
6 720 806 032-12.1ITL
1
2
1
2
6 720 806 032-33.1ITL
DANGER: Risk of poisoning through escaping gases.
Flue gas can escape if the flue gas collector and cleaning
drain are not correctly sealed.
Carefully close the flue gas collector with the
cleaning cover, and the cleaning drain with a cap.
DANGER: Risk of poisoning through escaping gases.
Flue gas can escape if the flue gas collector and cleaning
drain are not correctly sealed.
Carefully close the flue gas collector with the
cleaning cover, and the cleaning drain with a cap.
For wet-cleaning (chemical cleaning), observe the
operating instructions of the relevant cleaning
equipment and cleaning agent.
It may be necessary to vary the wet-cleaning process
from that described here.
3
2
1
6 720 806 032-34.1ITL
4
29


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