11.4.6 Cleaning the heat exchanger
1. Unscrew the nuts from the inspection hatch on the heat exchanger.
2. Carefully remove the inspection hatch, the insulation cloth and the
silicon insulation cord from the heat exchanger.
Caution
The insulation cloth may stick to the heat exchanger. Avoid
damaging or tearing the insulation cloth.
3. Inspect the insulation cloth and replace if it is faulty or seriously
damaged.
4. Clean the areas between the pins of the heat exchanger using the
cleaning knife. Always work from the bottom to the top. Move the
cleaning knife between the pins horizontally and diagonally.
Caution
Always use the cleaning knife specially designed for this boiler.
This knife is 560 mm long.
5. Use compressed air to blow the cleaned parts through in turn. Do this
from the service side and from the burner area.
6. Fit the inspection hatch and the insulation cloth with a new silicon
cord.
7. Use clean water to thoroughly rinse the heat exchanger from the
burner area.
11.4.7 Cleaning the condensate collector
1. remove both sealing caps from the condensate collector.
2. Thoroughly rinse each side of the condensate collector for at least 5
minutes, with the largest possible water flow.
3. Refit both sealing caps on the condensate collector.
Fig.137 Removing the inspection hatch
AD-3001582-01
1
2
3
Fig.138 Cleaning the heat exchanger
AD-3001583-01
4
5
5
7
Fig.139 Cleaning the condensate collector
AD-3001607-01
2
1
11 Maintenance
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C 340 / C 640
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