Well I just bought the MQ-45 to use as my shallow well pump. This thing is very quiet. The main thing I was after. It has plenty of pressure. However it has this alarm thing on it that will shit it off if it thinks somthing is wrong. I get an alarm after about 5 min of it running. After looking thru the owners manual it says you will get an alarm under 4 conditions. Dry running, overheating, too low supply voltage, siezed motor. Well I am thinking it thinks it is dryrunning. That would mean that it is running out of water in the well. But I have a check valve that is about a foot from the pump. When it shuts off I can turn it right back on and it will run and pump again. I dont understand how if I was running out of water I could turn it right back on and have water again. I called Grundfos and talked with tech support about bypassing the flow switch. The guy kept telling me that the pump was fine and my foot valve was probably full of debris. I told him I could see that but why can I turn it right back on and have water? I am seriously thinking about drilling a hole in the side of the housing and adding the old square d pressure switch. I just want to take a shower now without the stupid pump turning off. Sorry for my rambling, But has anybody ever dealt with this?