So my submersible water pump was showing intermittent signs of failure, plus I was looking for an excuse to buy new gear, and @Luke triggered me by mentioning the CW-3000 chiller again in that thread, so I compulsively bought one (yes, I’m ashamed of myself)
First, I don’t even know if “CW-3000” originally referred to a particular brand, but I did not bother searching for hours and picked the first one I found that was cheap enough and looked decent. It’s from Asia, obviously.
It came in today, so I figured I would take a few pics and report here in case someone is interested.
First, it’s large-ish, I did check the dimensions before buying and it fits just right in the place where my old tank was, but I pictured it as being smaller for some reason:
The first thing I noticed on the back is the big-a** fan…it’s 6" in diameter. And that’s going to be my main problem, more on this below. The tubing fixtures on my model are plastic (I don’t care, but I smiled at how they bothered to make them look like metal ones, lol), and OF COURSE they did not match the diameter of the tubing I have in place for my spindle (which is 8mm OD, 6mm OD, while these things are made for 12mmOD/10mmID tubes)…
I rummaged through my box-o-stuff, found some 12/10mm silicone tubing I had left, and a couple of air line adapters:
And decided that cutting two short lengths of 12mm tubing and using those adapters (definitely not intended to be used that way) was good enough (and it was, it works perfectly, there is very little pressure in the circuit anyway):
I removed the (many) screws and took a look inside. Large thermal sink/circuit, small-ish pumps, decent cabling job.
Behind the front panel sits a buzzer, it looks small but let me tell you, when it goes off, you CANNOT miss it, I’m glad Luke’s post mentioned the LOUD beeping when turning the chiller on, I could have had a heart attack otherwise:
I noticed that label on top, but my English is not good enough to know what an anhydrous “boot” is ? My antifreeze would have to do…
You know what’s nice ? Using your old submersible pump to fill the tank of your new chiller:
Time to turn it on, and OH BOY that beeping at startup is scary.
My initial “pump in a bucket” setup sounded like this, at around 71dB:
And now for the disappointment: the chiller fan makes it louder than my previous setup, at around 72/73dB:
It does have a much more continuous and lower-pitched sound, so it’s less annoying, but I immediately knew that:
- I must have picked a CW-3000 that is louder than others, because @Luke described his as “nice and quiet”
- I am going to mod that fan to make it quieter. Now that I have a temperature meter on the chiller I’ll be able to see how “hot” it gets during long cuts, but I’m pretty sure that a spindle requires much less cooling than a CO2 laser (that those chillers are made for), so I think I can reasonably hope to use a lower fan RPM, I’ll have to see how to do that.
Other than the sound level, I like it so far, it’s stable and sturdy, the temp meter is nice, the visual tank level indicator is nice too. Now to find something to cut that will take a long time, and allow me to test it in real conditions.