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4. Defrost inner wall
Generally, frost occurs on the upper part of refrigerator body and inner door. Frost may cause
gap between refrigerator body and door sealing strip, which may cause bad refrigerating
effect. Defrost on inner door with a defrosting shovel, which is provided together with the
equipment. Empty refrigerator body, and then defrost according to the following method:
Note: Don't defrost with the tools that have sharp edge and corner, for example, a knife or a screw
driver.
1. Take out objects in refrigerator and put them into another storage box, or a container with
freezing liquid‐state carbon dioxide.
2. If there is an aided cooling device, turn off the device.
3. Turn off the power.
4. Open outer door and inner door, let refrigerator outer door naturally open for a period of
time to melt frost.
5. Use a dry cloth to wipe off the water on refrigerator bottom.
6. After finishing cleaning refrigerator body and inner door, restart the equipment.
7. Put the objects back into already fully‐cooled refrigerator body.
8. If there is an aided cooling device, turn on the device.
5. Battery maintenance
When low‐temperature storage box is continuously working, please check the electricity
quantity of battery. When you find the electricity quantity of battery is low, please ensure that
battery switch is ON, at this time, the battery is recharged. When the battery has been
recharged continuously for a week, please test the electricity quantity of battery again; under
normal condition, at this time, the electricity quantity of battery should be full. If the
condition of insufficient electricity quantity of battery still appears, please replace the
rechargeable battery.
Power‐off alarm battery is a consumable. The life service of battery is about 3 years. If battery
is used more than 3 years, it may not fail to act at the time of alarming, and the setting of
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