2. Be sure to clean the dust on the condenser and compressor on the back or bottom of the refrigerator. You can use a vacuum cleaner or brush to remove dust. Be careful not to wipe the dust on the refrigerator and compressor with a wet cloth.
3. When the refrigerator is out of service for a long time, you should first cut off the power supply, take out all the food in the refrigerator, clean the inside and outside of the refrigerator, and open the door for several days in a row to make the refrigerator fully dry and dispel the peculiar smell in the refrigerator.
4. Check the drain pipe. If the drain pipe is blocked, water will leak into the refrigerator. Poke the drain pipe with a wire to remove the things accumulated on the drain pipe.
5. Don't neglect the cleaning of the door sealing strip. Dilute the bleach with 10 times of water, and then dip it in a toothbrush to clean it. Finally, rinse the bleach with water. The adhesive tape is dirty and easy to age, which will affect the tightness of the refrigerator and increase power consumption.
Daily maintenance method of computer: It is very important to clean the dust of the host computer frequently! !
The key is to set up the computer well, otherwise it is easy to have problems.
3. Use some well-known software (optimization master, rabbit magic) to optimize your love machine (these are for lazy people, I optimized the settings myself, so that I can know fairly well).
4. Monitor should be checked frequently, but I don't know what to check. I always check with white paper.
5: There are still some minor problems. Just to get your attention. Hehe, don't worry.
Daily maintenance methods of computer 1, hardware environment maintenance.
Avoid sunshine, humidity and dusty places.
Clean the inside of the cupboard regularly.
Avoid vibration
2. Software maintenance
The next system garbage cleaning software, such as 360, regular cclean, uses traces.
Avoid frequent startup and shutdown.
Consciously avoid visiting unfamiliar websites.
In addition, pay attention to the stability of voltage.
Does anyone know if the refrigerator looks good? It's really good and durable, but it's recommended to buy a frost-free one, otherwise it will freeze inside and make your head big.
How to carry out daily maintenance of commercial refrigerators;
(1) The newly bought refrigerator needs to be placed stably for two hours before it can be powered on. The refrigerator may tilt during transportation, and the compressor will not work when it is inverted. During normal operation, it is necessary to restart or cut off the power supply. When restarting, you need to wait 5- 10 minutes to turn on the power supply, which can prolong the service life of the compressor and will not cause damage to the compressor.
(2) Commercial refrigerators should be inspected and maintained regularly, because the refrigerator is placed indoors, and the chassis is easy to be contaminated with grease, dust, cobwebs, etc. You can wipe it clean with a soft rag dipped in warm water. To prevent damage to the coating outside the box and the parts inside the box, do not use washing powder, decontamination powder and alkaline detergent to clean the refrigerator.
(3) During maintenance, boric acid or disinfectant paper towels can be used to wipe the inside of the refrigerator, take out the shelf and clean it with water. The condenser and compressor also need to be cleaned to prevent dust from affecting the work of the machine. Wipe the inner wall of refrigerator with glycerin to form a thin protective film, which can be easily wiped off even if it is stained with milk or food residue.
(4) When the refrigerator is used for a long time, it should be cleaned and maintained regularly. If it is not cleaned regularly, the smell in the refrigerator will be unpleasant, and even bacteria will breed, affecting the original taste of food. Therefore, after the refrigerator is used for a period of time, the food in the refrigerator should be taken out and thoroughly cleaned.
(5) It is forbidden to directly flush the refrigerator with water, so as not to affect the efficiency of electrical insulation, and direct flushing with water will also lead to leakage of electricity in the refrigerator.
After cleaning the refrigerator, put it in a ventilated place for a long time and dry it thoroughly to ensure that the refrigerator is clean, tasteless, safe and reliable before use.
Daily maintenance and solution of UPS battery? UPS is widely used as a maintenance-free sealed lead-acid battery, and its price is relatively expensive, accounting for about 1/3- 1/2 of the total cost of UPS. The actual maintenance also shows that more than 50% of UPS power failures are related to its batteries. When a large number of UPS fail, the first thing to throw away is expensive batteries. The backup power supply system, which cost thousands of dollars, is paralyzed and important data is lost because of the uncertainty of battery state, and the consequences are unimaginable. The huge loss is far from being compensated by tens of thousands of yuan. Therefore, the necessary maintenance of UPS battery pack is the key to prolong the service life of UPS.
Switching sequence
In order to avoid the damage to UPS caused by the surge current generated by the load at the moment of start-up, power should be supplied to UPS to make it work in the bypass state, and then the loads should be turned on one by one to avoid the impact of load current on UPS and prolong its service life. The shutdown sequence can be regarded as the reverse process of the startup sequence. First, turn off the loads one by one, and then turn off the UPS.
2. Before starting the machine
Before starting the machine, it is necessary to confirm whether the polarity of the input power supply is correct to ensure personal safety. Note that the total load power cannot be greater than the rated power of UPS. UPS should be prevented from overload operation to ensure the normal operation of UPS.
3. After turning off the phone
After the mains supply is interrupted and UPS is powered by the battery pack and automatically turned off, do not use the UPS battery pack to power on, so as to avoid battery damage due to excessive discharge. When the mains electricity is abnormally transferred to UPS battery pack for power supply, the load should be turned off in time, and then turned on after the mains electricity returns to normal.
4. Use environment
Similar to the working environment of computers, UPS does not require high ambient temperature, and usually works normally at 0℃ ~ 40℃. However, the dust-proof problem also plagues UPS. The use environment of UPS requires cleanliness, less dust and dryness. Dust and humid environment will cause UPS to work abnormally. UPS battery packs need higher temperatures. The standard working temperature is 25℃, and it is best not to exceed the range of 15℃ ~ 30℃ at ordinary times. Too low temperature will not only reduce the capacity of battery pack, but also further affect the service life of UPS. In addition, the anti-magnetic ability of UPS is not very good. Therefore, do not place strong magnetic objects on the UPS, otherwise it will cause the UPS to work abnormally or damage the machine.
5. Battery maintenance
The battery pack of UPS will automatically discharge. If it is not used for a long time, the battery pack will be damaged, so it needs to be charged and discharged regularly. If the maintenance-free absorption electrolyte system battery is used, gas will not be generated during normal use, but if the battery pack is overcharged due to improper use by users, gas will be generated and the internal pressure of the battery pack will increase. In severe cases, the battery will expand, deform, leak or even rupture. If users find this phenomenon, they should replace the battery pack immediately.
caution
Because of the high battery voltage of UPS, there is a certain risk of electric shock to human body. Therefore, when loading and unloading conductive connecting wires and output wires, there should be safety guarantee, and the tools used should be insulated, especially the output contacts should be set to prevent electric shock.
7. Charging voltage
In the process of UPS charging, if the charging voltage is too high, the battery pack will be overcharged, and vice versa. When the charging voltage is abnormal, the battery configuration data may be wrong. Therefore, when installing the battery pack, we must pay attention to the correctness of the battery specifications and quantity. Try to avoid using batteries of different specifications and brands, and it is best not to use low-priced and inferior products as external chargers.
8. Charging current
Similar to the voltage requirements of UPS, UPS battery pack should avoid excessive current when charging and discharging. Although sometimes the battery pack of UPS can accept a certain degree of large current, it should be avoided as far as possible in actual operation, otherwise the battery plate will be deformed, which will lead to an increase in the internal resistance of the battery, which will seriously reduce the battery capacity and greatly shorten the battery life.
9. Discharge depth
The discharge depth of UPS also has a great influence on the service life of the battery. The deeper the battery is discharged, the less times it can be recycled. Therefore, deep battery discharge should be avoided when using. Although some brands of UPS have discharge protection function, if UPS discharges under light load or no load, the battery will be deeply discharged, thus affecting the service life of the battery pack.
10. Load size
Ordinary users will think that the greater the load capacity of UPS, the better the protection effect on computers, so choose products with high price and large load capacity when purchasing. In practical application, the user's load is only 30% or even less than the rated value of UPS, which will actually affect the service life of UPS. After all, the internal battery pack can't work completely normally in many cases. Of course, it does not mean that rated load 100% is the best. If so, any small problem of UPS will cause great losses. The actual operation shows that 50% ~ 80% load is the best.
How to maintain the cleaning machine daily? Remember to change the engine oil in the high-pressure pump regularly. If it is not electric, but gasoline or diesel-powered, it is also necessary to change the power oil regularly and clean the oil filters (oil filter, gasoline filter and diesel filter). If you inhale the cleaning solution during use, remember to clean the water once. Otherwise, put it in a dry place after use. Do not expose the high-pressure pipe and water inlet pipe to the sun. Clean the suction filter and inlet filter after use.
What should Siemens pay attention to in the daily maintenance of refrigerators? Keep the refrigerator clean and use fresh meat containers to reduce conflicts with cooked food.
Pay attention to the following points during maintenance:
1, because the refrigerator is in contact with a lot of water, so we should pay attention to moisture prevention, mainly the external electronic control part.
2, pay attention to heat dissipation, mainly pay attention to the distance between the refrigerator and the wall, to have enough heat dissipation space.
3. The interior is often cleaned and disinfected. The refrigerator is powered off regularly, and washed with clear water after the ice melts to prevent harmful bacteria from multiplying and ensure health. Remember not to beat the ice before it melts, which will damage the partition in the refrigerator.
4. Pay attention to the cleaning of dust outside the refrigerator to avoid dust accumulation for a long time. Cleaning after stain deposition may hurt the surface paint and scratch the appearance.
Try not to put anything on the refrigerator.
6. Turn it on and off lightly to prevent the sealing strip from accelerating aging and prevent the refrigerator from being damaged by strong impact.
7. Check the refrigerator power cord regularly every six months or one year. If aging or damage is found, replace it in time to prevent electric leakage from hurting people.
8. If the working efficiency changes, it is necessary to test whether it is necessary to add calibrators to ensure the best working condition.
9. If the refrigerator is placed in a humid environment, connect the ground wire according to the requirements of the manual to prevent electric leakage from hurting people.
10. During the operation of the refrigerator, the current and voltage should be stable. If it is unstable, it is necessary to add a voltage regulator. Otherwise, it will hurt the motor of the refrigerator.
1 1, don't start the switch frequently for no reason, it will do great damage to the refrigerator motor.
12. Prevent small animals from damaging refrigerator lines. At present, it is mainly rats.
Daily computer maintenance uses 360-degree security guards, and system maintenance antivirus software is readily available. Perfect unloading and super rabbit are also necessary. If possible, you'd better have a Trojan buster to protect your key information.