CAUTIONS FOR USAGE

This unit is provided with the filter check lamp. If the filter check lamp is flashed, clean the condenser filter. Refer to page 23 “Cleaning of condenser filter”. A clogged filter may cause poor cooling and compressor trouble.

When connecting a liquid CO2 cylinder for the back-up system of AT type freezer, consult your dealer of a neighboring engineering shop of high pressure gas.

Leave the remote alarm switch “OFF” until the inside temperature of the freezer reaches the appropriate level. Leave the back-up system switch “OFF” as well for AT type. After the inside temperature reaches the appropriate level, set the needle for the warning device operation of the temperature recorder.

When the unit is first installed, or re-started after long period of no use, the power failure alarm may not operate, because its Cadnica batteries have completely discharged. This does not denote a malfunction. In this case, continue to operate the unit for about 3 hours. To fully recharge the completely discharged batteries, the unit has to be operated for about 2 days.

Cover the control panel with the control panel cover to avoid the malfunction resulting from an accidental contact with control panel (such as power switch OFF).

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Sanyo MDF-793AT, MDF-593AT instruction manual