25
ROUTINE MAINTENANCE
WARNING
Always disconnect the power supply to the unit prior to any repair or maintenance
of the unit in
order to prevent electric shock or injury.
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 traces 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.
Defrosting
This product is refrigerated by the direct cooling. When it uses for a long time, frost appears on the
chamber wall. It cannot be cooled down when there is much amount of frost. The defrost is mentioned
in the following.
Use the scraper provided for removing the frost if the biomedical freezer operation must be continued.
Pay attention not to impact or damage the inner wall.
1. When defrosting, temporarily move all the contents of storage containers in the biomedical freezer to
another low-temperature freezer.
2. Remove the storage container and the shelf.
3. Press defrost key (DEF) for 5 seconds to stop the freezing operation. While the freezing operation is
stopped, the current chamber temperature and dF are displayed on the digital temperature display
alternately.
4. After a several hours, check visually that all frost was removed completely.
5. Use the drain hose to drain accumulated water. When draining, remove the cap attached to the
bottom of the cabinet and the hose
6.
Wipe off moisture remaining in the cabinet and return the hose and drain cap to their original positions.
7.
Restore the storage container and the shelf.
8. Press defrost key (DEF) so that the freezing operation can be started.
9. Once the chamber temperature has dropped to the desired temperature, place the original contents
back in the biomedical freezer chamber.
Note:
After the defrosting, the freezing operation is never resumed automatically. Make sure to press defrost
key (DEF) to start the freezing operation after defrosting.
