In the summer, the use of central air conditioning has brought a bit of coolness to the masses. Central air-conditioning has been very popular in our lives, high-rise buildings, hotels, office buildings, homes and other places. Central air conditioning can provide a wide range of cooling services for users, and the cooling effect is very good. In the process of use, sometimes the central air conditioner will have some faults or other problems, resulting in the central air conditioner not cooling or slow cooling, etc., there are many factors causing this cause, so it is necessary to properly check and repair.
Central air conditioning is a large-scale refrigeration unit that differs from small refrigeration air conditioners and freezers. We give an example of the inspection and troubleshooting methods for central air conditioning using closed cooling towers.
The central air conditioner uses a closed cooling tower for cooling, while the closed cooling tower uses the principle of water circulation evaporation to remove heat for cooling. A condensing coil, a sprinkler system, a fan, a water collector, a water pump, and the like are disposed inside the tower body. The water pump pressurizes the cooling medium through the condenser, and the cooling medium and the condenser coil heat transfer, and is disposed in the upper spray system to uniformly spray water on the outer layer of the coil to form a water mist film. The heat of the water absorption coil is rapidly vaporized, and the vaporized water vapor is taken away by the airflow formed by the fan. The water vapor passes through the water collector, intercepts the water, and the hot air is discharged into the tower body for one cycle to achieve the purpose of cooling.
Reasons for slow cooling:
The main refrigeration core of central air conditioning is the closed cooling tower. Closed cooling towers are selected based on cooling capacity and water volume. The cooling capacity is to meet the cooling standard. 1. Insufficient water: The heat exchange of the closed cooling tower uses a large amount of water. When the circulating water is insufficient, the amount of evaporation will decrease and the amount of heat absorbed will decrease. Therefore, the cooling tower will not be cooled or The cooling effect is weak; the solution: timely replenish the circulating water, and ensure that the height of the circulating water tank water is lower than the indicated police line. 2. Excessive scale: water continuously evaporates on the surface of the condensing coil. For a long time, the calcium and magnesium ions in the water will accumulate and adhere to the surface of the coil. Therefore, the cooling time is prolonged and the temperature is not lowered for a long time. Phenomenon: Solution: Set up an independent automatic descaler or manually clean it. Manually use auxiliary equipment to scrape off the scale of the surface, or use chemical acid to clean the surface. 3. The pump pressure is insufficient and the cooling medium does not circulate. The water pump is the main power to provide medium circulation. Therefore, when the pump pressure is insufficient, the condensing medium in the coil does not circulate, and the heat of the medium cannot be conducted, resulting in the equipment not being cooled. Technically check the performance of the pump and replace it with a new one if necessary. Http://
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