Ayce YWD-10 Manuel D'utilisation page 114

• Any repairs or maintenance must only be carried out on the
unit by a suitably qualified engineer. Before opening and
servicing the unit the authorized engineer must be in
possession of a copy of the manufacturer's service manual
and must follow the safety information contained within it to
ensure all hazards are minimized.
• The refrigerant system should not be perforated or
punctured.
• Do not cover or restrict the airflow from the outlet or
inlet grills.
• Keep the filters clean . Under normal conditions , filters
should only need cleaning once every three weeks
( approximately ) . Since the filters remove airborne particles ,
more frequent cleaning maybe necessary , depending on the
air quality.