Guide to Noise Screening of refrigerators

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Home, should be a quiet haven, refrigerator as“Food Guardian”, normal operation should be soft background sound. But the sudden cacophony of noise broke the stillness and made me annoyed. Don't worry, a three-step self-examination will help you identify the source of the noise and fix it.

1. External environment and placement

The external environment and placement of the refrigerator have a great influence on its operation stability and noise, and poor details may cause noise problems.

(1) balance the four legs and stabilize the foundation

The balance of the four legs of the refrigerator is critical to the stable operation, and the imbalance will increase the vibration of the compressor and produce greater noise.

To operate, place the level firmly on the top of the refrigerator and observe the location of the bubbles. If the bubble is not in the middle, find a low mat, hold the height of the slow rotation adjustment, each rotation angle should not be too large, while observing the adjustment, until the bubble in the middle, to ensure a smooth landing on all four feet.

(2) reserve space to ensure heat dissipation

Refrigerators need to run heat, if wrapped, heat dissipation can not go out, the system will overheat, compressor will increase the operation, noise will increase.

Leave at least 10 cm of space between the back and the wall, the top and other objects, and the sides and obstructions for heat dissipation. If there is not enough space, move the surrounding items immediately. If it is a built-in installation, check whether it meets the heat dissipation requirements and adjust the installation position if necessary.

(3) choose a flat surface to reduce shaking

The uneven ground makes the refrigerator vibrate and resonate, making a harsh noise.

Can use the naked eye to observe whether the ground is flat, you can also use the glass ball test, if the glass ball rolling obvious, indicating that the ground is uneven. If you can, move the refrigerator to a flat place. If you can't, use a thick, flexible rubber cushion on the bottom of the refrigerator to reduce vibration and noise.

2. Internal articles and components

Open the refrigerator door, the contents of the display and the state of the components may be the cause of noise, need to carefully examine.

(1) reasonable arrangement of ingredients, noise reduction and high efficiency

The refrigerator is too full, air-conditioning can not be smoothly cycled, the compressor will overload work, produce greater noise.

According to the type and size of food, put perishable green vegetables and fruits on the upper level, meat and fish on the middle level, and beverages and sauces on the lower level; according to the frequency of use, keep common ingredients in easy-to-reach locations. Leave at least 2 centimeters of air space between ingredients to allow air-conditioning to flow freely, which reduces noise, improves refrigeration efficiency and saves electricity bills.

(2) check widgets and fix minor problems

Drain plug: drain easily blocked by food residue, etc. , refrigeration will issue a“Gurgling” sound. Use a thin wire or a special cleaning brush to insert slowly into the drain pipe, gently stirring to clear the blockage; if the blockage is serious, you can flush the drain pipe with a small amount of warm water, pay attention to the water temperature is not too high, so as not to damage the internal parts of the refrigerator.

Fan blade problem: the fan blades inside refrigerators tend to accumulate dust or ice and make a“Click” noise when they rotate. Clean the dust on the fan blades regularly with a soft brush or a hair dryer at a low temperature. Do not wipe with a damp cloth to avoid short circuiting the fan. If the fan blades are frozen, turn off the power of the refrigerator first and wait for the Frost to melt naturally, you can also use the low temperature of the blower against the frozen parts gently blowing, but to maintain a certain distance, to avoid damage to the fan blades.

3. listen to the sound source, accurate solution to noise

When the refrigerator emits noise, the problem can only be solved by accurately judging the type of sound source.

(1) the hum: the compressor problem

The continuous“Hum” sound may be a problem with the compressor, the compressor aging, lack of lubrication or internal parts wear and tear can lead to the operation of abnormal sound.

Get close to the refrigerator and hear if the sound is coming from behind the bottom of the refrigerator (where the compressor is usually) . If the sound is persistent and loud, you can almost always tell it's the compressor. At this time to contact the professional maintenance personnel, they have professional tools and experience, can accurately diagnose the problem of compressor and repair or replacement, do not disassemble the compressor, lest cause more serious damage.

(2) Hiss: refrigerant leakage

The“Hissing” sound may be a sign of refrigerant leakage, which can be caused by a broken refrigerant pipe or a loose joint, which can not only cause noise, but also affect the cooling effect of the refrigerator, it may even damage the compressor.

In addition to hear the“Hiss” sound, you can also observe the refrigeration effect of the refrigerator, if found that the refrigerator cooling speed is slow, or the temperature of the refrigerator room, freezer does not reach the set value, it is likely to be refrigerant leakage. To immediately stop using the refrigerator, and quickly contact after-sales maintenance personnel, they will find the leak to repair, and add the right amount of refrigerant.

(3)“Dang Dang” sound: Object Vibration

“Dangdang” sound may be issued by the vibration of the refrigerator, glass bottles, cans and other items if placed unstable, in the process of running refrigerators will collide with each other, making annoying noise.

Open the door of the refrigerator and observe if anything is shaking. Shake the refrigerator slightly to see if you can hear a more noticeable“Clinking” sound. Re-position items to make sure they're in place, such as glass bottles and cans. Use a rubber band or special clip to hold items to the shelf, prevent them from moving while the refrigerator is running.

Conclusion

Although refrigerator noise can be a problem for us, we can quickly locate the problem and solve it through the three-step self-examination method. Let the refrigerator to resume quiet operation, not only can create a quiet and comfortable home environment, but also to ensure the efficient and stable work of the refrigerator, to provide reliable food preservation guarantee for our lives. From now on bid farewell to the refrigerator noise troubles, enjoy the high quality of quiet life.