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4 Annexes
Checklist A maintenance works user
Maintenance works
Enter date for the quarter
1. Change both the filters in the device (Filter change cycle 90 days)
Quarter
Year
I
II
III
IV
20...
20...
20...
20...
20...
20...
20...
20...
20...
20...
2. Clean extract air prefilter / filter in extract air valves (change approx. every 2 months)
Quarter
Year
I
II
III
IV
20...
20...
20...
20...
20...
20...
20...
20...
20...
20...
3. Change other filters in the air duct system (if available)
Quarter
Year
I
II
III
IV
20...
20...
20...
20...
20...
20...
20...
20...
20...
20...