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Concealed Duct High Static Pressure
Installation Manual
Maintenance List
Part Unit Check (visual/auditory) Maintenance
Heat exchanger
Indoor/outdoor
• Dust/dirt clogging, scratches • Wash the heat exchanger when it is
clogged.
Fan motor
Indoor/outdoor
• Sound • Take appropriate measures when
abnormal sound is generated.
Filter
Indoor
• Dust/dirt, breakage • Wash the filter with water when it is
contaminated.
• Replace it when it is damaged.
Fan
Indoor
• Vibration, balance
• Dust/dirt, appearance
• Replace the fan when vibration or balance
is terrible.
• Brush or wash the fan when it is
contaminated.
Air inlet/outlet grilles
Indoor/outdoor
• Dust/dirt, scratches • Fix or replace them when they are
deformed or damaged.
Drain pan
Indoor
• Dust/dirt clogging, drain
contamination
• Clean the drain pan and check the
downward slope for smooth drainage.
Ornamental panel,
louvres
Indoor
• Dust/dirt, scratches • Wash them when they are contaminated or
apply repair coating.
Exterior
Outdoor
• Rust, peeling of insulator
• Peeling/lift of coat
• Apply repair coating.
37-EN