Our deparatmet's back up Engine is a 1989 E1. I am wondering if any one has experiaced any problems with electrical power loss during pump opperations. We have experianced power loss a couple of times, both during normal opperations. The engine looses power completly and the motor turns off cutting all electrical power to the whole apparatus. Once the apparatus cools off 5 to 10 min later the Engine strarts right up. Problem in intermittent. We have check some of the switches but no luck, any feed back is welcome Thanks!