As the innovative technology of electronic products is getting higher and higher, the requirements for the production process and quality of PCBA are also getting higher and higher. PCBA cleaning is one of the important links of PCBA processing, so the cleaning requirements for PCBA are relatively strict. The full-automatic brush machine is an on-line full-automatic PCBA board cleaning machine, which is suitable for traditional board washing water without manual contact with cleaning agent. The equipment combines the PCBA board transmission technology with the brush cleaning technology, and multi-channel brushing in front, back, left and right directions to ensure that the PCBA Board meets the cleaning requirements. It is suitable for cleaning the welding surface of single-sided PCBA board and will not wet the front components. Yi Neng frequency converter has been widely used in automatic plate washing machines, and has achieved obvious economic results, which makes the system increase production and save energy significantly, and is deeply trusted by users.