During the operation of the chiller, the filter screen will accumulate a lot of impurities. When impurities accumulated too much in the filter screen, it will easily lead to a chiller flow decrease and a flow alarm. So it needs to inspect regularly and replace the filter screen of the Y-type filter of the high and low temperature water outlet.Turn off the chiller firstly when replacing the filter screen, and use an adjustable wrench to unscrew the Y-type filter of the high-temperature outlet and the low-temperature outlet respectively. Remove the filter screen from the filter, check the filter screen, and you need to replace the filter screen if there are too many impurities in it. Notes not losing the rubber pad after replacing the filter net and putting it back in the filter. Tighten with an adjustable wrench.