Air operated diaphragm pump is a new type of conveying machinery, and it is the most novel type of pump at present. Using compressed air as the power source, it can absorb all kinds of corrosive liquids, liquids with particles, high viscosity, volatile, flammable and highly toxic liquids. However, many customers have some problems in the process of using the AODD pump. Then, we will troubleshoot the air diaphragm pump next.