The use of central air-conditioning is becoming more widespread, especially in some new office buildings, but this can only be achieved if it is based on regular maintenance and maintenance. Because of time or product factors, central air-conditioning can cause some malfunctions, and the necessary repairs and maintenance should be undertaken in the light of the actual situation. The specific steps and techniques can be analysed in the light of the following, or in the light of the detailed information that can then be obtained by specialized agencies entrusted to them, in the belief that they will yield satisfactory results and reach a state of careless use。
I. Maintenance of central air conditioning methods
1. Auto-stopping at work
Fault: according to the user, while the central air conditioner is frequently inactive, it can be activated and recommenced immediately, the operation is well-refrigerated, the stoppage time is irregular, door-to-door checks are irregular, the main panels are normal, the main panels are used to measure the electrical voltage, the main panels are replaced repeatedly, and the failure occasionally occurs, indicating that the main panels are normal, the electrical tables are constantly connected to the internal terminal, the readings of the air-mediate gauges are suddenly reduced, normality is immediately restored, the power supply is suspected to be in poor condition, the readings of the electrical gauges are moving with hand-to-plugs, the opening of the power source plugs is found to be uncracked, and there is a serious fire problem, the re-test machines are replaced in the back seat, and the failure is lost。
Maintenance summary: this failure appears to be more complex on the surface, but it is often due to external causes, so we should apply basic maintenance methods when repairing the failure。
2. Frequency of compressor startup
In the process of operating the machine, it was found that the cooling was less effective, and that the external compressor was working with much noise, went to check its working voltage, and the compressor was able to work at 223 v, at a time when the cooling effect was still high, after about 10 minutes, increased noise from the external compressor, 7-8 minutes after the compressor was shut down, only wind was delivered from the inner press, 5 minutes after the pressurization was activated, checked the outer working environment, the condener surface was dusted, suspected that heat was not good enough to cause the compressor to shut down, after cleaning the external compressor, the test failure remained frequent, opened the outer pressressor's shell, felt the presser was particularly frozen, checked the lines, was well connected, the pressure and current gauges were open, pressure 7 kgf/cm2, electrical current 8. 7a, indicating that the pressure was too high for pressure protection. The speed of rotation of the outer fan is carefully observed to be much slower than it was before, with the replacement of the outer fan's capacitor increasing, at which point the working pressure dropped to 4. 8 kgf/cm2 and the working current to 6a. Air conditioners operate in a normal modem and do not operate at frequent intervals。
Indoor noise
Indoor noise refers to noise that occurs after the opening of the engine, firstly by checking the electric voltage of the indoor winder, 100 volts of electricity in a shut-down state, and the slow operation of the interior engine after the shutdown, as the internal electric generator heats up, thereby deforming the frame of the plastic generator after the heat, leading to a shift in the position of the plastic sealer, while the hard noise is caused by the flue leaves that need to come in contact with the chassis, and by the smell of burning. This leads to the determination of controlled silicon damage for wind machines, and the maintenance method is to recommend the replacement of the master control panel。
4. Indoor noise
Indoor noise refers to noise that occurs after the opening of the engine, firstly by checking the electric voltage of the indoor winder, 100 volts of electricity in a shut-down state, and the slow operation of the interior engine after the shutdown, as the internal electric generator heats up, thereby deforming the frame of the plastic generator after the heat, leading to a shift in the position of the plastic sealer, while the hard noise is caused by the flue leaves that need to come in contact with the chassis, and by the smell of burning. This leads to the determination of controlled silicon damage for wind machines, and the maintenance method is to recommend the replacement of the master control panel。
As an example of the knowledge and methodological presentation on the maintenance of central air-conditioning, many of the most common problems of central air-conditioning, such as poor heating, have been identified, at a time when they need to be dealt with through dismantling and professional experience, and where necessary, by suggesting that professional tools can be used to repair them in the hope that they will achieve the same satisfactory results and conditions as expected, although considering the inexperience of most consumers themselves, the best way to do so would be to turn to professional maintenance agencies. It is hoped that this will lead to the minimization of losses。
