(1) The refrigerator should be cleaned regularly (at least 2 times a year). When cleaning the refrigerator, first cut off the power, use a soft cloth dipped in water or dishwashing detergent, gently scrub, then wipe off the detergent with water.
(2) In order to prevent damage to the outer layer of the box and the plastic parts inside the box, do not use washing powder, decontamination powder, alkaline detergent, Tianna water, boiling water, oil, brush, etc. to clean the refrigerator. (3) When the accessories in the box are dirty and dirty, they should be removed and cleaned with water or detergent. Wipe the surface of electrical parts with a dry cloth.
(4) After cleaning, plug the power plug firmly and check if the temperature controller is set to the correct position.
(5) When the refrigerator is not used for a long time, the power plug should be unplugged, and the inside of the box should be wiped clean. After the box is fully dry, close the box door.
Magnetostrictive level sensor is composed of three parts: probe rod, circuit unit and float. To measure, the circuit unit generates pulses of current that travel down the magnetostrictive line and generate a circular magnetic field. A float is arranged outside the probe rod, and the float moves up and down along the probe rod with the change of liquid level. The float generates a magnetic field at the same time because it is fitted with a set of permanent magnets. When the current magnetic field meets the float magnetic field, it produces a "twisting" or "return" pulse. The time difference between the "return" pulse and the current pulse is converted into pulse signals to calculate the actual position of the float and measure the liquid level.
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