I have a mug 15 air break starter. Very often i have to change the contacts. It is costly. The bakelite connector damage quickly. When the starter is in the vertical position when we loose the screw of incoming and out going cables the square nut fall down. It is a design defect. It can be operated remote. But the problem is very often there will be no water in pump. So We have to come to the pump house So that is a waste. So finally i decided to go for an oil starter. It is less complicated. And long life.