I removed the adapter heater band from MP22 to put on 23 so it could start up. It's wired into the same terminals as the nozzle (R1 and S1)
MP20 broke all the ejector plates bolts and had to be replaced. Also the plate guide bar was badly bend. Darryl and I straightened it in the shop press enough to be useable.
MP21 stopped working while in production. Nothing would move but the sled. Also the clamp and screw position wouldn't read. We powered it down about 3 times and it allowed us to move the clamp so we could reset the mold thickness. Everything started working then. I've seen it do this once before a while back with the same problem and solution.
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