Dust cleaning is often ignored when cleaning the cassette fan coil. Many people's cleaning work is not very detailed. Here we remind you that dust has a great influence on the use effect of the cassette fan coil and is very important for his cleaning. Let's take a look at it slowly:
The cassette fan coil is responsible for the important mission of transferring the cold heat of cold and hot water to the air passing through the cassette fan coil. In order to ensure high efficiency heat transfer, the surface of the cassette fan coil must be kept smooth as much as possible. However, since the cassette fan coil is generally equipped with coarse filter with relatively large holes, it is inevitable that dust will pass through the filter and adhere to the pipe or rib surface of the coil when it is first used, if it is not cleaned in time, the amount of heat exchange between the hot and cold water in the coil and the air flowing out of the coil will be reduced, and the heat exchange efficiency of the coil will not be fully exerted. If there is a lot of dust attached, even some air passages between the fins will be blocked, the fan coil will also reduce the air supply volume of the card fan coil and further reduce the air conditioning performance.
The cassette fan coil mainly relies on the forced action of the fan to heat the air when passing through the surface of the heater, thus strengthening the convective heat exchanger between the radiator and the air, which can quickly heat the air in the room. The cassette fan coil is the terminal device of the air conditioning system and is used to adjust the temperature, humidity and cleanliness of the indoor air. It has air heaters, air coolers and air humidifiers that meet the requirements of heat and humidity treatment, air filters for purifying air, air mixing boxes for adjusting fresh air and return air, and mufflers for reducing fan noise.
According to the requirements of annual air conditioning, the cassette fan coil can be equipped with an automatic adjustment system connected with cold and heat sources, and can be made into a series of shaped products by the factory to form processing sections with various capacities and functions, which are selected by designers and assembled on site. The fan coil generally has a large capacity (air volume is greater than 5000 cubic meters/hour), so it does not have an independent cold and heat source, the fresh air unit mainly deals with the state point of outdoor fresh air, while the air handling unit mainly deals with the state of indoor circulating air. Compared with the cassette fan coil plus fresh air system and unit air conditioner, it has the advantages of large air volume, high air quality, energy saving, etc., and is especially suitable for large space and large passenger flow systems such as shopping malls, exhibition halls, airports, etc.
In the maintenance of cassette fan coil, water leakage is a relatively common phenomenon, and the causes of water leakage are various. The following is a simple summary for everyone, and tells the story of several cases that cause water leakage.
First of all, we have to rule out several situations: the card fan coil in the room often leaks, if not the pipe, the valve is damaged, it is usually caused by condensate.
Water leakage is mainly caused by heat preservation outside the cassette fan coil water collecting tray. If heat preservation is strengthened, it can be eliminated. For example, in the water collecting tray, the condensate pipe of the cassette fan coil water collecting tray is not smooth and is caused by condensate overflow. The method of dredging the condensate pipe is usually to prepare a 4-5 m long plastic pipe with one end inserted into the condensate discharge pipe and one end connected to the toilet faucet (a small joint can be made, screw on the faucet by thread), use the pressure of water to dredge the pipeline, or purge with a carbon dioxide cylinder.
The phenomenon of blockage of the condensate pipe of the cassette fan coil is common. This is mainly due to the presence of water in the cassette fan coil of the guest room. In addition, the temperature is suitable, which is prone to algae reproduction and growth, resulting in gelatinous and slippery extremely thick residue. The condensate pipe is blocked. Algae-killing drugs are often placed in the water collecting tray of the cassette fan coil of the guest room in foreign countries to reduce its harm.
According to the above introduction, we can simply judge the cause of the failure when the cassette fan coil leaks, and it is not difficult to repair it. If the key is found correctly, the maintenance efficiency will be improved a lot.
Shandong Xingheng Environmental Technology Group Co., Ltd. is located in Luquantun Development Zone, Dezhou, Shandong Province, the hometown of glass fiber reinforced plastic in China. The company has three-level qualification for construction mechanical and electrical installation engineering, three-level qualification for environmental protection engineering, and safety production license. It is the first in the industry to pass ISO9001 quality management system certification, ISO14001 environmental management system certification, OHSAS18001 occupational health management system certification, an axial fan invention patent, a fan utility model patent, EIA, three at the same time waiting for complete procedures