6
CAUTIONS FOR USAGE
1.
When the first start-up or start-up after no use of long period, the warning device may not operate,
because its Ni-MH battery has completely discharged. This does not denote a malfunction. In this
case, continue to operate the unit for about 3 hours, then push the test switch to check if the warning
device operates. To fully recharge the completely discharged battery, the unit has to be operated for
about 2 days.
2.
In the case of high ambient temperature, the cabinet front may heat up after the freezer starts to
operate first. However, this does not denote a malfunction. It is due to the hot gas piped around the
unit frame to prevent condensation around the cabinet.
3.
Cool down the freezer chamber sufficiently before storing materials and put the materials in a small
batch to reduce the temperature rise.
4.
The digital thermometer of this ultra-low temperature freezer is designed to display the temperature of
the center part of the freezing compartment. The thermometer sometimes displays a temperature a little
bit higher than the actual temperature of the center part depending on the amount or arrangement of
stored items.
5.
An access port to take out the measuring cable in the case is provided on the back wall and right
bottom of the freezer. Be sure to replace the cap and thermal insulation after taking out of the cable, or
the chamber temperature cannot complete down, and frost may accumulate outside the port
surroundings.
6.
Always open and close the door gently. Rough operation may lead fall down of stocked items,
incomplete closing, or damage of door gasket.
7.
Check and rectify the problem as soon as possible when the alarm lamp is light and buzzer is activated.
Refer to table 5 on page 19 for the alarm.
8.
Do not use brushes, acids, thinners, powdered soap or hot water for cleaning the freezer. Polishing
powders or hot water can deteriorate the painted surfaces or cause deformation, discoloration or
degeneration of plastic or rubber components. Be especially careful not to wipe plastic or rubber parts
with volatile solvents such as benzine. Wipe off a diluted neutral dishwashing detergent completely with
a wet cloth when it is used.
9.
The frost will be built up on the chamber wall and inner door during operation. Use a scraper provided
with the freezer or equivalent tool to remove the frost. The inner door is hard to be opened when a large
amount of frost is built up on it. In this case, remove the frost by detaching the inner door as shown in
page 25.
10.
There are pipelines for cooling behind the walls. Do not defrost inside walls using a knife, ice pick,
or screw driver. Be careful not to damage the walls or to make a hole on the walls as this could cause a
failure of the freezer. Also, take care not to drop a heavy item or anything with sharp edge on the
bottom of the chamber.
11.
Because of a large freezer, the following facilities are needed; a dedicated power outlet of more than
15A capacity, a motor breaker of more than 15A or a general-purpose breaker of more than 30A. Do not
use a branched socket for power source as it may cause unstable voltage and result in a failure of the
unit. Always use a dedicated power outlet. For details, consult a Sanyo sales representative or an
electrician.
