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if the ultra-low temperature cabinet is used, or the ultra-low temperature cabinet is handled, or the ultra-low temperature cabinet is powered off (including power failure) for more than 10 hours, the machine must be inspected before use (or before being powered on again). confirm the machine is qualified.

precautions for the use of tianling ultra low temperature refrigerator

1. indoor temperature: 5-32 ℃, relative humidity 80% / 22 ℃.

2. more than 10cm from the ground. below 2000m above sea level.

3. it takes 6 hours to reduce from 20 ℃ to 80 ℃.

4. strong acid and corrosive samples should not be frozen.

5. always check the sealing rubber strip of the outer door.

6. the landing is smooth and level.

7. when there is a power-off prompt, press the stop beeping button.

8. generally, the refrigeration temperature is set at 60 ℃

9. the power supply voltage 220v (ac) should be stable, and the power supply current should be at least 15a (ac).

10. in case of power failure, the power switch and battery switch behind the refrigerator must be turned off. when the normal power supply is restored, turn on the power switch behind the refrigerator first, and then turn on the battery switch

11. note that heat dissipation is very important for refrigerators. keep indoor ventilation and a good heat dissipation environment. the ambient temperature should not exceed 30c

12. in summer, set the temperature to -70 ℃, and pay attention not to set it too low at ordinary times.

13. the door should not be opened too large and the access time should be as short as possible.

14. please note that samples that need to be stored frequently should be placed on the upper two floors, and samples that need to be stored for a long time and do not need to be stored frequently should be placed on the lower two floors, so as to ensure that the air conditioner will not be excessively consumed when opening the door and the temperature will not rise too fast.

15. pay attention that the filter screen must be cleaned once a month (use a vacuum cleaner to suck it first, wash it with water after suction, and then dry it and reset it at the end). the internal condenser must use a vacuum cleaner to suck the dust on it every two months.

16. don't open the door with force when the door is locked to prevent the door lock from being damaged.

17. to defrost, you can only cut off the power supply of the refrigerator and open the door. when the ice and frost begin to melt, you must put a clean and absorbent cloth on each layer of the refrigerator to absorb and wipe clean the water (note that there will be a lot of water).

usage of tianling ultra low temperature storage box:

1. the refrigerator must be left standing for at least 24 hours before it can be powered on.

2. do not put items in the empty box, turn on the power and start the refrigerator by stages to reduce the temperature to - 40 degrees first, then to - 60 degrees after normal startup and shutdown, and then to - 80 degrees after 8 hours of normal startup and shutdown. observe that the refrigerator has been normally started and stopped for more than 24 hours. it proves that the performance of the refrigerator is normal.

3. after confirming that the freezer is normal by pressing operation 2, items can be stored in the freezer. in principle, items with a temperature of - 60 degrees should be stored, which should not exceed 1/3 of the box capacity. if the temperature of the stored articles is higher than - 60 ℃, the temperature of the freezer should be set at about 3 degrees higher than the temperature of the stored articles (that is, if the temperature of the articles is 20 degrees, the temperature of the low-temperature cabinet should be set at 23 degrees), so as to ensure that the freezer is shut down and has normal startup and shutdown for more than 8 hours.

4. prohibition: therefore, the low-temperature storage box is a storage equipment. it is strictly forbidden to put too many relatively hot items at one time, which will cause the compressor not to stop for a long time, the temperature will not drop, and it is easy to burn the compressor. items must be put in batches, step by step temperature cooling, until the required low temperature!