Viessmann VITOFLEX 300-UF Operating Instructions Manual page 43

Inspection and maintenance
Flue gas dust extractor (option) maintenance
Maintenance intervals
Fig. 6
Activity
Interior
Open covers and clean the guide blades of the flue gas dust
B
extractor with a hand brush
Flue gas fan
A
Disconnect plug on motor
Undo wing nuts and extract motor together with impeller
Clean with a brush or wire brush
Ash box
Check gaskets
C
Empty ash box D underneath the flue gas dust extractor
Tip: Check the fill level of the ash box daily.
Note
Only operate the boiler with the ash box installed.
After maintenance has been carried out
To reset maintenance, see page 24
(cont.)
Interval
300 1200 Every
hours hours six
months
O
O
Interval depends on the fuel and size of the
ash box.
Maintenance
Annually
O
O
43