16
MAINTENANCE
DISCONNECT THE VENTILATOR FROM POWER SUPPLY PRIOR TO ANY
MAINTENANCE OPERATIONS.
Maintenance of the ventilator means regular cleaning of the ventilator surfaces of dust and cleaning or replacement of the fi lters.
MAINTENANCE
1. Fan maintenance (once per year).
Pull the ventilator to remove.
Clean the impeller blades. To remove dust use a soft brush, cloth
or a vacuum cleaner. Do not use water, abrasive detergents,
solvents, sharp objects. The impeller blades must be cleaned
once in year.