Last year, I posted about the value of Franklin Electric’s Form 2207 – Submersible Installation Record as a tool to document a submersible installation for later reference (Inspiring Confidence).
The other day, I was talking with a drilling contractor and he related that a key piece of information that his company records at the completion of every installation is how much current (amperage) the motor is pulling while it is delivering water.
Down the road, whether it be a few months or many years, if he gets a call about an issue with that installation, that’s a key piece of information he pulls from the file. It’s also one of the first things his crew checks on site (after they’ve eliminated a few of the most obvious causes). The question is, how does the amperage compare to when the installation was new? Is it the same, higher, or lower? Measuring this takes just a couple of minutes but armed with this piece of data, it leads to a very simple decision tree. If the current (amperage) is the same as before, the motor and pump are most likely good, and it’s time to look elsewhere.
But if the current is significantly higher and the unit is still delivering water, that means the motor is working harder than it was when it was installed. That leads to the conclusion that either more water is being pumped (perhaps a broken pipe downhole) or something is making the pump drag.
On the other hand, if the current is lower, that likely means that less water is being pumped. That could be a pump issue (non-working impeller perhaps) or something is blocking the flow of water.
But as he explained, the key is knowing what the amperage was when everything was new and working perfectly. And of course, this piece of information has to be integrated into the bigger picture.
In any case, after presenting the above at countless Franklin seminars, it was good to hear that it’s being put to good use and I wanted to pass that along. After all, it’s one thing to get technical advice at a Franklin seminar, but sometimes hearing that it’s being used in the field every day is even better.