4. Inspect the gas filter.
4.1. Replace the gas filter if necessary.
4.2. Clean the gas filter without the use of liquids (shake it or
carefully blow it clean) if it does not need to be replaced.
5. Reassemble the unit in reverse order.
11.4.5 Cleaning the burner
1. Unscrew the bolts from the adaptor and remove the adaptor.
2. Lift the burner out of the heat exchanger.
3. Check the burner.
4. Clean the outside of burner using compressed air with a pressure of 2
to 5 bar.
Caution
Maintain a minimum distance of 1 cm from the surface of the
burner.
Never clean the burner's surface with a brush or similar item.
5. Clean the inside of the burner using a vacuum cleaner.
6. Check the burner end cap.
Replace the burner or end cap if faulty or seriously damaged.
7. Set the burner aside, making sure it can not be damaged.
Caution
Do not refit the burner until the heat exchanger, condensate
collector and siphon have been cleaned.
8. Visually inspect the burner area.
9. Use a vacuum cleaner to remove any visible soiling from the burner
area.
Fig.132 Inspecting and cleaning the gas
filter
AD-3001604-01
4
4.1
4.2
Fig.133 Removing the burner
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1
2
Fig.134 Checking and cleaning the burner
AD-3001579-01
2-5 bar
min. 1cm
3
4
5
Fig.135 Checking the burner end cap
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6
Fig.136 Cleaning the burner area
AD-3001587-01
8
9
11 Maintenance
156
C 340 / C 640
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