Hi All,
I remember seeing a thread about the geothermal system failure at Sherman Hospital in Elgin, IL. I can't seem to find it, I thought it was this site but I could be wrong. Does anyone remember seeing that/can point me in right direction.
Thanks
Hi All,
The more I read on different sites the more confused I get. A standard of the shelf full port 1.25" brass ball valve from any of the big box stores comes with a tag on it that read "600 WOG 150 SWP." I have read that the valve is rated for 600 psi on the net and that seems unlikely to...
I pulled a pump out of wet well yesterday and part of the pump info tag is missing. It was mounted on slid rails about 18' below grade and has a 3" discharge. It looks like a giant sump pump and has a cast housing. The whole this is painted light blue. I was able to get the following info...
I will start by stating I'm not a motor guy, I'm a water well contractor. The problem that I have run into is that I installed a all new vertical water lube turbine with a vertical hollow shaft motor, in a new well and new controls. This is a 150 hp 460 volt U.S. motor and Abb acs550 series...
I saw a new one today that has me stumped. I pulled a line shaft water lube turbine because it was off in prefromance. The pump is 5 years old. The iron pipe, stainless shaft, and bronze spider bearing all looked fine. When we took the pump apart we found that the bronze inpellers have...
I have a site that is at the end of a feeder line that has lots of power problems with voltage fluxuation and current imbalance. Its a closed delta 460 phase supply. Every 2-3 years they burn up a 50hp submersible well pump motor. They had good motor protect but shut it off because the protect...
I know I have seen on job sites over the years underwater rated ecetrical plugs. The application was on a water fountian in a lake. In the fall they pulled the fountain to the shore, unpluged it and stored the fountian indoors. While the fountain was in use the plugs were under 15-20' of...
I was working in northern Indiana and ran across a power supply that I had never seen before. Its a 3 phase 480 system across the legs, but leg to ground it measures 390, 360, and 140. I thought they had a power problem but a local electrician said thats a normal supply for the area. My...
I want to use a vfd to control a pump. The question that I have is that I have a 230 1 phase input and will be using a 230 3 phase output. The ASC550 ABB drive that I will be using calls for a 50% derate on the drive. The question is what size fusing is required, full load of the drive that is...
I install submersible motors for well pumps. According to the motor manufacturer a 20 Hp 460 3 phase motor can pull up to 30.3 amps and should be installed on a 70 amp breaker. My question is if I am putting the motor on a ABB VFD model acs550-u1-031a-4 which is only good for 31 amps, what...
