Remove it with a hexagonal wrench. According to relevant public information, the steps to dismantle the heating circulation pump are to cut off the power first. There are four rivets on the pump body and pump base (black), which can be dismantled with an Allen wrench. After disassembly, the rotor and impeller can be seen. , check if the rotor and impeller are stuck, and just clean them. The Chinese name of berte wall-hung boiler is Berte. Foshan Berte Electric Co., Ltd. is a well-known brand of wall-hung boilers. It is a modern large-scale enterprise integrating the research and development, production, sales and service of gas heating water heaters, electric heating water heaters and other products. .