Hitachi RAC-18WSC Instruction Manual page 42

THE IDEAL WAYS OF OPERATION
1. An average room temperature setting is probably the best for you as well
as being economical.
• Excessive cooling or heating is not recommended for health reasons. High
electricity bills may also result.
• Close the curtains or blinds to prevent heat from flowing into or escaping the
room as well as to make more effective use of electricity.
2. At intervals, the doors and windows should be opened to let fresh air in.
Make sure the room is ventilated when operating the air
CAUTION
conditioner at the same time as other heating appliances.
3. Make efficient use of the timer before going to sleep.
4. The following must never be used for cleaning the indoor and outdoor
units:
• Benzine, thinner and scrub can damage plastic surfaces or coating.
• Hot water above 40°C can shrink the filter and deform plastic parts.
5. Do not block the air intake and air outlet.
• Do not block the air outlets and intakes of the indoor and outdoor units with
curtains or other obstacles which could degrade air conditioner performance
and cause unit failure.
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