To anyone with a CW-3000, I just made a modification to mine that is going to be my favorite yet! The fan on the 110 VAC model runs on 110 VAC, so it’s quite simple to install a fan control knob.
I found this one on Amazon and it was super simple to drill a hole through the front of the unit, the control knob comes with double sided mounting pads and a nut and washer to hold it in place, so just a 5/16" drill bit was all that was needed there.
The wiring involved cutting the black wire right before it goes into the fan. I added just under two feet of 16 AWG stranded wire to each side that I just cut (using solder and heat shrink tubing, but a wire nut and electrical tape is probably sufficient here). On the new loose ends, use 1/4" female spade connectors to make it ready for a simple plug into the new fan control knob.
So far it’s working great! I have it turned off with a close eye on the coolant temperature. I deal with industrial liquid cooled pumps at work and I believe that there is enough liquid volume in the tank, plus the other heat loss avenues of uninsulated tubing and the radiator, that the noisy fan is far overkill for a CNC setup like this. I am leaving it turned off, but since it’s on a dial, I can adjust the fan speed if needed based on coolant temperature. Anything less than full blast is going to be quieter than before.
While that sounds cool, and it seems like you might be joking. But I must reiterate, I think turning the fan on AT ALL is unnecessary. This dimmer gives the most options, but from what I’ve seen so far, OFF is just right. I actually haven’t seen my coolant temperature raise above ambient yet since I turned the fan off. I didn’t have the CW-3000 long enough before I made this change to know how that compares to before.
good point… I might just put a simple on/off there… and really assume I’m never going to need it
(my machine is in my basement, which seems to be between 60 and 70F all year)
