Method and steps of changing diaphragm metering pump:

1, take the 4 screws of the fixed pump head. The screw position is on the back of diaphragm metering pump;

2, after the pump head is loosened, the length of the stroke is adjusted to the 0% position before the pump head is removed, which ensures that the electromagnetic shaft has enough pressure to keep the connection stable, so that the diaphragm can be turned off;

3, pull the hydraulic end to pull the screw out of the socket. Seize the liquid end counterclockwise rotation. A little resistance, you can spin the diaphragm;

4, once the diaphragm is removed, check the diaphragm of the metering pump to ensure that it is intact, without any damage. Install a new diaphragm, clockwise rotation of the back plate and diaphragm until it is tight. Adjust the back plate, so that the drain hole is located at the bottom of the pump;

5, after the diaphragm metering pump is installed, and the back plate leakage discharge hole is placed in the vertical position, the pump head is installed to ensure that the suction valve is aligned with the discharge hole of the leakage liquid, and the screw at the hydraulic end is aligned with the corresponding 4 holes;

6, rotate to the stroke length of 100% position, so that the whole component can be rotated to the back plate leakage discharge hole and the bottom of the pump alignment. During the operation of the pump, adjust the hydraulic end and diaphragm to the appropriate position;

7, when the hydraulic end with the position of the backplane is adjusted, the 4 bolts are tightened in a diagonal manner until proper