Just a thought on your motor coolant. I use roughly 25% propylene
glycol/ 75% deionised water in my laser. The last time I changed it was
5 years ago and I have no gunk apart from a very small amount of
accumulated green oxidation on the copper heat exchanger in the chiller
(actually a pub drink chiller). Apparently you need 20% or higher to
prevent algae growth. I top it up about once a year with DI water.
Les
On 18/11/2020 23:27, Gene Heskett wrote:
While I was out there, I removed the water line nuts from the 6040 motor,
probed into it with a long thin driver dislodging quite a bit of junk,
some of which stung my hands when I alternated blowing thru it with the
air hose, which I alternated directions several times. Had to cut off
about 7" to get to good hose, found the hole blown in the side of the
hose a couple inches above the motor. Then pulled about a foot thru the
cable chain, tightened it all back up and dumped the slightly dirty
water & put 2 gallons a fresh distilled in it to cover the pump. And
I'm seeing more water back into the tank than I have seen in a year. The
stream is now a good big coffee cup a minute, up from a quarter inch in
the bottom of the cup, so its at least partially restored, well enough
to finish the next stage of the motor mounts tommorrow without cooking
it again.
Thank you Ralph.
Cheers, Gene Heskett
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