Complete Guide to Using a Refrigerator

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As an indispensable electrical appliance in modern families, refrigerators bear the important task of keeping food fresh and extending the shelf life. However, how to correctly adjust the refrigerator stall to achieve the balance between energy saving and preservation, and how to carry out scientific disinfection to ensure food safety, is a difficult problem faced by many families. This article will combine the refrigerator gear adjustment and disinfection of the two core content, to provide you with a comprehensive set of refrigerator use guide.

1、refrigerator gear adjustment

1. Gear principle and adjustment logic

The refrigerator gear is usually set to 0-7 gears. The larger the number, the lower the internal temperature of the refrigerator and the harder the compressor works. Gear 0 is the standby mode, which is suitable for short-term power-off cleaning or long-term going out to save energy. Gear 7 is the strongest cooling mode, which is suitable for rapid cooling. However, long-term use will cause freezing of the refrigerator compartment, frostbite of food materials and increase the burden on the compressor. The middle 1-6 gears dynamically adjust the working time of the compressor through the NTC temperature sensor to achieve precise temperature control.

2. Season and food type adaptation adjustment

Summer: The ambient temperature is high, it is recommended to adjust to 4-5 gears to avoid the surge of energy consumption caused by frequent startup of the compressor.

Winter: low ambient temperature, can be adjusted to 3-4 gear. When there is heating in the north, it still needs 4 gears, and when there is no heating in the south, it can be reduced to 2-3 gears.

Food type: green leafy vegetables in the refrigerator compartment should be kept at 4-6 ℃, corresponding to 3-4 gears; Meat in the freezer compartment should be below -18 ℃, corresponding to 6-7 gears.

3. Sub-regional and special scene adjustment

Cold storage room: It is recommended to set it in 2-4 gears, which can keep vegetables fresh and avoid frostbite of fruits and vegetables.

Freezer compartment: 5 gears are sufficient when there is no load, and 6-7 gears should be adjusted when there is full load to ensure quick freezing.

Special scene: after power failure, power on again should be adjusted to 0 gear for 30 minutes before gradually rising to 3 gear; When a large amount of hot food is put in, it can be temporarily adjusted to 7th gear to accelerate cooling, and then adjusted back to the original gear after 2 hours. When going out for a long time, adjusting to 1st gear can not only maintain basic refrigeration, but also save energy consumption.

2、refrigerator scientific disinfection

1. Preparation before disinfection

Empty and power off: Take out all food and store it according to "ready-to-eat-fresh-frozen" classification. Check the shelf life of food and deal with temporary or abnormal food.

Personal protection: wear masks, nitrile gloves, and goggles when exposed to chlorine-containing disinfectant to block the spread of microbial aerosols.

Waiting for room temperature: Wait for 2-4 hours after the power is off to allow the refrigerator to return to room temperature, perform defrosting operations simultaneously, and use a plastic shovel with 40°C warm water to accelerate melting.

2. Deep cleaning and disinfectant selection

Internal cleaning: adopt "3-step cleaning method"-neutral detergent scrub, warm water secondary cleaning, dry cloth to absorb residual moisture, focus on cleaning the door seal gap, drain hole and other dead corners.

Disinfectant selection:

75% alcohol: Apply to all material surfaces, wipe 2 times and act for 15-30 minutes.

Quaternary ammonium salt disinfectant: recommended concentration of 1000-2000mg/L, less corrosive to metal parts.

Chlorine disinfectant: need to strictly control the concentration of 250-500mg/L, after 30 minutes of action, wipe thoroughly with water 3 times.

External disinfection: high-frequency contact parts such as door handles and control panels need to be wiped with 500mg/L chlorine-containing disinfectant, and the action time is extended to 45 minutes.

3. Post-disinfection management and long-term maintenance

Ventilation and drying: Keep the refrigerator door open and ventilated for 2-4 hours after disinfection, and close the door after monitoring the internal relative humidity ≤ 60% to avoid disinfectant residue and mold growth.

Food homing: clean the container twice before restoring storage, store raw and cooked food in layers, put ready-to-eat food in the upper layer and fresh food in the lower layer in the cold storage area; The freezing area is separated by partitions to avoid blood pollution.

Regular disinfection: ordinary households should be fully disinfected once a month, and it can be increased to once every 3 weeks in summer or humid areas. Commercial refrigerators need to be disinfected weekly, and with ultraviolet light assisted sterilization.

Material adaptation: stainless steel liner can use chlorine-containing disinfectant but the concentration needs to be controlled; Enamel coating to avoid long-term contact with high-concentration alcohol; Ceramic liner to prevent hard objects from scratching. Be sure to consult the product manual before disinfection to avoid warranty invalidation due to improper operation.

Conclusion

Master the underlying logic of refrigerator gear adjustment and scientific disinfection, from seasonal adjustment to food type adaptation, from deep cleaning to disinfectant selection, each step must follow scientific standards. Let the refrigerator become the cold chain housekeeper of family health, and build the whole link security from storage to food, so that every time you take it, you can feel at ease.

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