51
ROUTINE MAINTENANCE
Defrosting of chamber
Frost may accumulate near the top of the chamber, near the door in the chamber, or near the air intake
port (Auto). Excessive accumulation of frost is likely to create gaps between the door and the 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 battery switch of the
freezer.
4.
Open the outer door and inner door. Remove the
inner door by lifting 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 18.
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).
WARNING
Always wear gloves when mounting and/or removing the inner door to prevent injury.
CALIBRATION
During continuous operation, the following service tasks must be performed:
• Perform a temperature calibration at least once a year.
For temperature calibration, contact our sales representative or agent.
