Pump is not sucking, looses suction
For the MEDELA BREAST PUMP: Breast pump looses suction and draws milk into motor. This will most probably be because the membrane has milk residue and the Valve Head was chipped. The solution is to replace the Valve Head and Membrane, and then the pump should have the correct suction levels.
**Customer Please Note: The breast pump valve and membrane is one of your main points of suction, if this is either split, milk residue, chipped or not sitting flat on the yellow piece (valve head) you will not get the correct suction. When this happens it causes the milk to go back up the elbow through the tubing and into the motor. If this happens over a period of time it will cause the motor to clog with milk and the motor will end up dying on you. **