My PWNCNC water cooled spindle (240v 1.5Kw with the Kool non-drip connectors) has a problem. It heats up. Additional info - approx 6 mths old and running 50/50 mix of water and antifreeze.
I removed the ingoing non-drip connector from the spindle and it was pumping water just fine. Put it back into the spindle and removed the outgoing connector - not even a dribble. Swapped ingoing connector to outgoing side and vice versa - no change. Replaced the non drip connectors with the original PWNcnc connectors - no change.
It appears to me that the spindle has a blockage somewhere inside.
Any ideas on how to rectify this issue?
All ideas appreciated
Sounds like some debris or soemthing has gotten in there. If you have an air compressor, perhaps open both holes and shoot air into one side… be sure to paper-towel cover the other since it’ll be spitting.
The inside of the water-cooled spindle is an open chamber. So if something is in there causing the blockage, you’ll know pretty quickly.
Thanks for this Daniel. I don’t have a compressor but I got a small nylon cable tie put it down each of the holes and gently wiggled it. The cable tie gradually moved deeper into the cavity so I assumed it was moving debris. Put my mouth over one of the holes and blew. Not a nice taste but Eureka, we had bubbles. Repeated that a couple of times and hooked up to the water pump again. Problem solved.
This process did highlight for me the usefulness of the Kool connectors.
Hope this might be useful for others
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