how do I lift out the glass trap in the center of the filter? My dishwasher overflowed on the floor. Hose was not kinked and the overfill protector moves freely up and down. The plastic screen from the upper inside corner of the door came off and melted. Could that have caused the overfill protector to become immobile and cause overflow?? I found it in the bottom of the dishwasher on the screen. Up till now the dishwasher worked fine.