8
-7. Maintenance list
Aiming in environmental preservation, it is strictly recommended to clean and maintain the indoor/outdoor units
of the operating air conditioning system regularly to secure effective operation of the air conditioner.
It is also recommended to maintain the units once a year regularly when operating the air conditioner for a
long time.
Check periodically signs of rust or scratches, etc. on coating of the outdoor units.
Repair the defective position or apply the rust resisting paint if necessary.
If an indoor unit operates for approx. 8 hours or more per day, usually it is necessary to clean the indoor/
outdoor units once three months at least.
These cleaning and maintenance should be carried out by a qualified dealer.
Although the customer has to pay the charge for the maintenance, the life of the unit can be prolonged.
Failure to clean the indoor/outdoor units regularly will cause shortage of capacity, freezing, water leakage or
trouble on the compressor.
<Check list>
Part name
Object
Contents of check
Contents of maintenance
Indoor
Outdoor
Heat exchanger
• Blocking with dust, damage check
• Clean it when blocking is found.
Fan motor
• Audibility for sound
• When abnormal sound is heard
Filter
—
• Visual check for dirt and breakage
• Clean with water if dirty
• Replace if any breakage
Suction/
Discharge grille
—
• Visual check for dirt and scratch
• Repair or replace it if deformation or
damage is found.
Drain pan
—
• Check blocking by dust and dirt of drain
water.
• Clean drain pan, Inclination check
External appearance
—
• Check rust and pealing of insulator
• Check pealing and floating of coating film
• Coating with repair painting
Fan
• Visual check for swing and balance
• Check adhesion of dust and external
appearance.
• Replace fan when swinging or
balance is remarkably poor.
• If a large dust adheres, clean it with
brush or water.
Front panel, Louver
—
• Check dirt and scratch.
• Cleaning/Coating with repair painting
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