The first full speed powered test of the Herbold 300 HP granulator after returning from repairs. Entire system is being upgraded and automated as well as more user friendly.
It was tested for vibration and rotation direction, so the cover was open. Normally, this rotor is totally enclosed. Blades are not installed at this time.
Back in June, we had an unfortunate accident where a sledge hammer got dropped into a 300 HP grinder. See the previous article:HERE
Well, it was a big job just getting it out of the building to go to a local machine shop for repairs. During this time, I have been ripping out old controls and redesigning the support equipment and control systems for a better operation that before, not to mention the first step in automating the system.
It has returned and I have been busy reinstalling it. Total weight is around 22000 pounds so it was a very meticulous process, especially since it has to sit perfectly level on a floor that has a 2-1/2" slope diagonally from one corner to the other of the machine. That alone was a complex operation, as all I have to work with is a bottle jack (no, not a bottle of Jack) and pry bars.
There is still a lot of work to do, like getting the blower, hydraulics, conveyors and cyclonic separator with dust control tied into the system but this was the biggie.
Today was the very first powered test of the grinder; looking for vibrations, unusual noises and of course, making sure it goes the right way. I shot the video on my Panasonic Lumix digital camera. not a camcorder, but it came out OK.