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Re: Hot End Jamming!
Posted: Thu Oct 31, 2013 8:21 pm
by Batteau62
I would spring for the multimeter w/ temp probe and verify your temp. Especially with PLA. And I would hardwire the PEEK fan to run 100% all the time. Don't forget to PID autotune if you do. Is it a stock hotend? If so maybe upgrade to the new nozzle. I think I read on here that it doesn't temp creep as much?
Re: Hot End Jamming!
Posted: Thu Oct 31, 2013 8:41 pm
by Polygonhell
jonyzdude wrote:I have found however that through manual control the fan will not run at 15%. once you turn it to 30-35% the fan starts moving!
That's normal for fans, they aren't designed to be controlled by PWM signals, I've seen fans that will run at 20% but not start without going to 80%.
Either way for PLA run it at 100% all the time, there really is no such thing as too much cooling with PLA as long as the hot-end can maintain temperature.
Re: Hot End Jamming!
Posted: Thu Oct 31, 2013 10:40 pm
by geneb
If you followed the docs, the PEEK fan should be running at 100% for the length of the print run. 15% won't cut it.
If M42 P6 S255 doesn't turn the PEEK fan on, you've got it connected to the wrong output.
g.
Re: Hot End Jamming!
Posted: Sat Nov 02, 2013 12:59 pm
by jonyzdude
I found out through trial and error that the photo shown in the instruction document was incorrect. The peak fan should have been plugged into Fan 0 on the RAMBO not Fan 1.
Re: Hot End Jamming!
Posted: Sat Nov 02, 2013 4:20 pm
by geneb
Well considering I wrote the documentation, I know exactly what I specified and why. You're perfectly welcome to assemble it however you like, but don't come crying to me when it doesn't work.
FAN 0 is for the layer fan, FAN 1 is for the PEEK fan.
g.