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9. User Maintenance
User maintenance is limited to periodically cleaning the filters and the heat recovery cube. The unit should not be used
without filters. Cleaning intervals can be extended in areas of relatively low air pollution levels. The filters should be
replaced annually or after a maximum of 3 cleaning cycles
9.1 Cleaning the filters by user
Switch off the power supply
Remove front panel
Carefully remove filter covers
Carefully remove the 2 filters
Gently vacuum the outside of the filters as shown
After cleaning replace the filters
Replace filter covers
Replace front panel
Switch power back on and check unit is operating
normally
