How to fix a blocked motor piston in a Dosatron Water Pump?
- JJoshua GrayJul 28, 2025
If the motor piston of your Dosatron Water Pump is blocked, bleed the dosing pump by opening the clear water and fast priming valves situated downstream and upstream of the Dosatron. Then, dismantle the top cap to access the motor piston. Test the motor piston by hand. Activate the valve mechanism by pressing the vertical pushbutton until you hear the valves switch on.