12 DOSING PUMP Diaphragm Replacement

How to replace the diaphragm in a chlorine dosing pump. Grundfos DDA digital dosing pump.

[@pascalernest2916]

My pump is showing an alarm saying" motor blocked"...what is the cause

[@seanvan6377]

You didnt put the diaphram back to its Inward Position by pressing both buttons again....

[@seanvan6377]

You didnt put the Diaphram back to its Inward Position.