What is the reason why the new pneumatic diaphragm pump does not work after installation and ventilation?

May,20,2023

Explanation: During the express delivery process, the slider inside will shift and need to be reset manually. The specific operation method is as follows: Open the air valve cover, move the two small black sliders back and forth, one on the left and the other on the right, and then install the air valve cover（There is no need to tighten the air valve cover screws too tightly）