Jump!

Howdy, Everybody;

Well, our customer said Frog again, and we Jumped again!

Got a call yesterday just before lunch that they wanted us on site to startup the pumps, again. So we called everybody to meet us there, same as last time, and left the office just before lunch. Three hours later, back on job site. At first glance, things looked pretty good. But it turned out that most of the emergency shutdown sensors weren't installed.

When the controls man showed up, about 3:30 pm, and then the pump manufacturer's crew showed up around 4:00 pm, things began to move. It turns out that, because of the shutdown sensors not being wired in, the only way to run the pumps for startup was manually via the variable frequency drive controls. So after checking rotation on the motor (which was marked backwards - whee!) the pump guy bolted up the shaft coupling, and we started running the pump manually. They had enough water in the tank for around an hour of run time.

The pump worked as advertised. But we were unable to get the PID control loop setup to control the pump motor RPM according to the flowmeter reading compared to a set point. While we were struggling with that, the pump guys found a problem with the second pump, that they started working on.

That's about where we were when we lost the light and had to quit. So we headed home, arriving around 11 pm.

When we were up there Saturday, it was clear and hot. On this trip, it drizzled all day long. Today it is even worse, and G is going back to the job site to complete the setup. I wasn't needed for this trip. I hope he has better luck than we've been having.

-Pop