Defrosting The Chamber; Checking The Alarm Operation - Phcbi MDF-DU300H Manual De Instrucciones

ROUTINE MAINTENANCE

Defrosting the chamber

Frost may build up in the upper portion of the chamber and the inner door. Excessive accumulation of
frost is likely to create gaps between the cabinet and the magnetic door gasket, which can reduce the
cooling performance. Remove the frost from the chamber and the inner door with the scraper enclosed
with the unit. Use the following procedure for defrosting when excessive frost builds up in the chamber.
Note:
Do not use tool with a sharp edge (such as a knife or screw-driver) to remove the frost.
1. Turn off the switch for the back-up cooling kit (if installed).
2. Take out all contents from the freezer and transfer them to
another freezer or a container which is refrigerated by liquid
carbon dioxide or dry ice.
3. Turn off the power switch and the battery switch of the
freezer.
4. Open the outer door and inner door. Remove the inner
door by lifting it up as shown in the figure.
5. Leave the freezer in this state until the frost in the chamber
melts.
6. Wipe up the water that accumulates at the bottom of the
chamber with a dry cloth.
7. After cleaning the chamber, replace the inner door and start up the unit according to the procedure on
page 19.
8. Check that the chamber temperature reaches the set temperature and then replace the contents.
9. Turn on the switch for the back-up cooling kit (if installed).

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 cancelled by pressing the alarm test key (ALARM TEST) again during the
90 seconds.
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