Common faults and solutions of central air conditioning

Common faults and solutions of central air conditioning

What are the common faults and solutions for central air conditioning? Let’s take a look with the editor of okmarts.com!

For central air-conditioning machines with normal dew point temperature or low indoor temperature, please check whether the fan model meets the design requirements, whether the impeller steering is correct, whether the belt is loose, open the large air supply valve to eliminate the factor of insufficient air volume; there is a secondary return air system, It is possible that the secondary return air volume is too large, please reduce the secondary return air volume; it is also possible that the central air-conditioning system has many rooms and uneven air volume distribution. Please adjust to make the air volume distribution in each room even.

For the central air-conditioning system, the measured air volume is greater than the design air volume. It may be that the actual resistance is less than the design resistance, and the air volume of the fan increases. If conditions permit, the number of rotations of the fan can be changed; it may also be that the volume of the fan selected during the design is too large. Please close the small air volume control valve .

For the central air-conditioning system, the measured air volume is less than the design air volume, it may be that the actual resistance is greater than the design resistance, and the fan air volume is reduced. When conditions permit, the air duct components can be improved to reduce the system resistance; there may be a blockage in the central air-conditioning system, please check Clean up possible obstructions in the system; it may also be a leakage of the central air conditioning system, which should be blocked; or the fan cannot reach the design capacity or the impeller rotation direction is not equal, check and eliminate the factors that affect the output of the fan.

For indoor noise greater than design requirements and central air-conditioning fan noise is higher than the rated value, please measure the fan noise, check whether the fan impeller hits the shell, whether the bearing is damaged, and whether the shock absorption is good; it may also be that the central air-conditioning duct, valve, and tuyere have excessive wind speed If the airflow noise is large, please adjust various valves and vents to reduce the excessively high wind speed; it may also be that the noise reduction equipment of the central air conditioning duct system is not perfect. Please add noise reduction elbows and other equipment.

　　 For the central air-conditioning system total air supply volume does not match the total air intake volume, it may be that the measurement method and calculation are incorrect. Please review the measurement and calculation data; it may also be air leakage or air flow short-circuit. Please check the leakage and eliminate the short-circuit.

For the central air-conditioning indoor airflow velocity distribution does not have dead corners, it may be that the design of the airflow organization is not well considered. Adjust the position of the air outlet or increase the number of air outlets according to the measured airflow distribution diagram; it may also be that the air volume of the air outlet is not adjusted uniformly and does not meet the requirements. Design value, the air volume of each air outlet should be adjusted to meet the design requirements.