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ROUTINE MAINTENANCE
Cleaning the exterior, interior, and accessories
Use a dry cloth to wipe down the outside and inside of the unit and all accessories. If the outside panels
are dirty, clean them with a diluted neutral dish-washing detergent.
Wipe off condensation from the exterior of the cabinet with a dry, soft cloth.
Using an undiluted solution of detergent may cause the unit’s plastic areas to crack. Follow the
directions on the detergent for details of dilution.
After the wiping the cabinet or accessories with a diluted detergent, be absolutely sure to wipe the
surfaces with a cloth dipped in clean water to remove races of the detergent. After this, be absolutely
sure to wipe the surfaces with a dry cloth.
<Important>
■ Do not use a brush, an acid, a thinner, laundry soap, a powder detergent, or boiling water for cleaning.
These may cause damage to painted surfaces or cause perishing of plastic and rubber components.
Moreover, do not wipe plastic and rubber components with a volatile material.
■ In order to maintain the unit’s intended level of performance, always replace accessories that have
been removed for cleaning.
Checking the alarm operation
Check the alarm operation regularly (once every 6 months) to ensure that the alarm is activated in case of
a power failure. The alarm operation can be checked by the procedure below.
1. Press the alarm test key (ALARM TEST).
2. The alarm indicator blinks, the buzzer sounds intermittently, and the remote alarm is in alarm mode.
This continues for 90 seconds and then finishes automatically.
During the alarm operation, the temperature display turns off.
During the 90 seconds, the buzzer cannot be stopped by pressing the buzzer stop key (BUZZER).
3. The alarm operation can be canceled by pressing the alarm test key (ALARM TEST) again during the
90 seconds.
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