Maintenance And Service - Thermo Fisher Scientific ES Serie Bedienungsanleitung

Maintenance and Service

All laboratory refrigerators feature automatic defrosting and in normal conditions, means no manual defrosting is
required. However, in certain conditions (e.g. when the refrigerator is very full of when any new items are stored in
the refrigerator) frost may form on the rear wall of the equipment as the compressor must run for long periods of
time. As automatic defrosting takes place while the compressor is not running the refrigerator may not defrost
completely before the compressor restarts. In these instances, some manual defrosting may be required.
Before manually defrosting the cabinet, make sure the power lead is disconnected from the mains. Any loose frost
found on the evaporator can be removed carefully using a wooden or plastic scrapper.
With cold wall refrigerator condensation may from on the interior of the cabinet and may require periodic wipe- down
with an absorbent cloth.
In high usage and/or high ambient scenarios, excessive ice may form on the inner back wall of the refrigerator and
in the worst case or sudden power cut-off event, drain pan might overflow. Hence it is recommended to defrost
frequently and collect any build up ice from inside in a container and safely dispose in the sink. If the drain pan has
over flowed, empty the pan and dry up the wet regions around before next restart.
WARNING: DO NOT use heating devices
such as heat guns and hair driers to
speed up the defrosting process. Fire or
explosion of residual vapors may result.
Alternatively, a non-scheduled defrost can be carried out as required, follow the procedure below: -
To trigger a manual defrost
To select dEF push button
To confirm defrost start
To return to temperature display
Press for 1 second
Table 11. Defrost Manual Procedure
Note: This does not replace the automatic defrost function on relevant models.
ES Series Refrigerator
Function
3 times.
To select defrost
To stop defrost
CAUTION: When defrosting your
refrigerator, never use sharp or heavy
tools such as chisels or scrapers.
Damage to the equipment can result. Let
the ice melt enough so that it can be
easily removed.
Press Display Message
18