The pre filter can be disassembled. When disassembling the pre filter, it is necessary to first close the water supply pipeline to avoid water waste and inconvenience during washing. According to the model and installation method of the pre filter, use appropriate tools for disassembly. After disassembly, the pre filter should be cleaned in a timely manner and placed in a ventilated and dry place to avoid breeding bacteria and other problems. If professional cleaning is required, a suitable repair agency should be selected for maintenance.