Air conditioning is one of our common electrical appliances. Our life is also increasingly dependent on the function of air conditioning. In our life, we often encounter problems such as vacuum pumping, removal and maintenance of air conditioning by the installation master. Many people are curious about these operations of air conditioning. So what should we pay attention to during the removal and maintenance of air conditioning? Next, the manufacturer of the relocation and maintenance of Zhangqiu air conditioner will explain to you.
Smoking during maintenance is strictly prohibited: smoking is strictly prohibited during the installation and maintenance of air conditioners. Generally, heat and fire sources are strictly prohibited within 2 meters of the operation area to reduce the potential safety hazards in the construction area.
Strictly implement the welding operation specification: use the pressure vessel that conforms to the national regulations, comply with the chemical industry standard "Safety Code for Hot Work in Plant Area", and the welding must meet the relevant hot work distance of ≥ 5 meters between oxygen and combustible gas, and ≥ 10 meters from the hot work point; Welding oxygen and combustible gas must be equipped with pressure gauge and tempering device; Use soap bubbles (detergent foam, detergent foam) to check the air tightness before operation; When igniting, open the combustible gas valve first and then the oxygen valve. When closing the fire, close the combustible gas valve first and then the oxygen valve.
It is forbidden to add refrigerant by feeling: when filling refrigerant, it is required to use quantitative method; It is strictly forbidden to buy low price and low quality refrigerant. Low price and low quality refrigerant may be mixed with methane, R40 and other highly combustible substances, which increases the possibility of combustion and explosion during the operation of air conditioning; Welding operation is strictly prohibited if there is refrigerant in the system; It is forbidden to use open fire to heat the refrigerant tank and fill it with refrigerant.
Test pressure or charge refrigerant: cut off the power supply of the air conditioner; Select the appropriate safety filling valve (the joint specifications of R32 and R22 products are different); Connect the pressure gauge hose to the safety valve (first turn the ejector knob counterclockwise to the bottom); Drain the air in the hose of the pressure gauge according to the steps; Before unloading the pressure gauge, unscrew the safety valve thimble knob counterclockwise; Unscrew the safety filling valve at the charging valve end.
It is strictly prohibited to add refrigerant without determining whether the air conditioning equipment is leaking: when the air conditioning equipment is short of refrigerant, it will show poor cooling and heating effects; Report the lack of refrigerant fault code; Fault codes appear irregularly. The operation requirements are as follows: start cooling or heating for 5 minutes, and detect the temperature of the inlet and outlet air of the indoor unit. The temperature difference between cooling and heating is above 6 ℃, and the temperature difference between heating and cooling is above 8 ℃, which can be maintained normally; If the temperature is lower than the above value, it is necessary to shut down and measure the static pressure, and determine whether to discharge all refrigerant according to the static pressure value; Shut down the machine for 10 minutes, observe the static pressure, and make reference to the various refrigerant temperature and pressure comparison tables. If it is lower than the corresponding parameter value, it means that the amount of refrigerant in the air conditioning system is less than 30%. At this time, it is forbidden to start the machine for maintenance, and all refrigerant must be discharged before proceeding to the next process.
During the removal and maintenance of air conditioners, the standardization of operation determines the safety, comfort and energy saving of users, and the safety precautions are critical. Come to our website for more relevant content http://www.zqsybj.com Consult!