The coolant pump is the same one that is used in computer cooling systems. It is a Syscool PC cooling pump available on Ebay for about $14. If your system is brand new, I noticed that they changed the cooling pump and it has a larger tank on it. I have not seen that pump, but if you go to any computer store, they probably have them in stock. Otherwise, just give Chad a call and he can fix you up.
geg: I am sure Chad has the pumps available. These pumps are not industrial rated, they are just used for cooling overclocked pc's. If Axiom doesn't have one, and you are near a actual pc store they could probably fix you up. I'm not talking about a Best Buy, but a actual computer store. Just a thought, did you take a coolant line off and then turn the machine on to see if the pump is working? Just take a line off at the spindle and put a tray under it so you don't spill coolant all over the spoil board.
Post by traindriver on Jun 8, 2020 19:09:28 GMT -5
Yes, my coolant pump and fan went out over a year ago. I was in dire straits because of a paying job (which I don't have a lot of) so I went down to Lowes/Home Depot with a sample of hose and got a 5 gallon bucket, a fountain pump, and various fittings and hose to make a coolant system like some of the other cheaper systems come with. I put 2 gallons of coolant in the 5 gallon bucket, and it worked well enough all through last summer that I got lazy and never bought the computer fan and coolant pump that would be the replacement. I couldn't get metric tubing for a replacement, but I was able to find a standard size that was close enough that I could put on with no leaks. I keep thinking I should fix it, but only think about it when I turn on the fountain pump.
geg: The system traindriver is now using has been used on many cnc machines for a long time and work quite well. The Laguna's use that system, and uses the same Rich controller used on the Axiom machines. The fountain pump will actually circulate more coolant than the pump Axiom uses. In fact, there would be no radiator needed when using the larger pump because of the volume that larger pump has. The Axiom simply has a more compact and closed loop system that is sufficient for the spindle.
You guys were absolutely right. I not sure what I was thinking but I finally called Chad and he had me one the next day! I should have realized after all the times I've called him in the past over stuff that he'd come thru, again. My Bad!!!
One other thing to consider: Bubbles. I had bubbles in the line and after reservoir replacement (mine had a huge crack in the side from something - very weird) I could see them enter the pump...but not exit. I knew it wasn't circulating properly. One of my son's friend who build a lot of computers with liquid cooling systems suggested I set the spindle speed to zero, pull the spindle OUT of the holder and turn it sideways, then turn the spindle "ON" using the hand controller (still with 0 speed). This will activate the pump and allow the bubbles to be pushed through/around the various baffles in the pump. After a minute, I slowly rolled, pitched, and yawed the spindle in all three axis to ensure there was no chance anything was stuck (all motions produced more bubbles).
I actually think this could be something happening in transit and part of the setup process should be to "burp" the spindle to make sure there is good flow...or install a flow meter from the factory (hint hint).