14
Recommended maintenance intervals
Component
Action
Interval
Filter
Replaced at regular intervals so that full efficien-
cy of the unit is achieved.
3–6 months
Fans
Fans are cleaned with a soft brush to ensure
operational reliability and efficiency.
12 months
Countercurrent heat exchanger
Clean with water
12 months
Gaskets in general
Check gaskets on the unit and make sure they are
intact
12 months
Supply air and exhaust air valves
Check for dirt in supply air and exhaust air valves.
Clean as needed. Check that the valves have the
desired setting in relation to air volumes.
12 months
Air intake
Check for dirt and grime in the air intake and
exhaust, and clean as needed.
12 months
Ventilation ducts
Check the cleanliness of ducts and clean as
needed.
10 years
