On Monday 18 March 2019 13:50:34 Gene Heskett wrote: > On Monday 18 March 2019 09:10:04 Todd Zuercher wrote: > > Don't discount pump heating of the water. Last week I was working > > on one of our machines that was down with several issues (much > > larger spindle 19hp). One of the problems was the cooling fan for > > the water was dead. It was a lower priority than some of the other > > problems, so I was working on it for a couple of hours with the > > power on, then went look at the cooler and I was shocked at how warm > > the water was. Without the spindle running at all, in the time I > > worked on the machine, the water temp had risen from room temp to > > about 3 times higher than it normally is with the spindle cutting > > and the cooling fan working. The fan and radiators are very > > important on this 5 gallon cooling system. > > > > Todd Zuercher > > P. Graham Dunn Inc. > > 630 Henry Street > > Dalton, Ohio 44618 > > Phone: (330)828-2105ext. 2031 > > Yes, I was somewhat surprised myself when after 3 days, the 3 gallons > in my tank was up to 38C. Now my pump starts 1/2 second after the > spindle, and stops 120 seconds after its shut down. And just this > morning got all the pyvcp tallies working. At least showing pump power > s/b on, no flow switch. :( > > Yesterday, on a Sunday even, saw the usps driver put a box on the > chair just outside the front door, with a gallon of Kool-mist in it, > so I discovered just how little suction the mister I bought had. Takes > more air at a higher pressure than my 2hp AC is comfortable with to > lift the coolant out of a dishwasher pod bucket sitting on the table > about 4" below the bed surface. So I suspect I'll have to make a > shelf on the side of the gantry to set the src container on, raising > it about 4". The suction hose is also a bit short, so moveing the > coolant tank with the gantry will help there too. So will approaching > the mister valve from below, sucking hard enough to pull it over the > top of the gantry crossbar takes way too much air. > > Then last night I plugged in the A table, but it stopped working as I > believe I'll have to fix the windings order. Not the first time as no > two motor cables are wired the same so I've had to adjust other motors > already. And I think I've a hal routine to calibrate the rotation > scale working by y measureing apos-fb for 100 clicks of the home > switch. I like to be able to set angles to arc-minutes accuracy at > least. :) > Speaking to rotary's, is there a convention as to which way it turns? Are we looking face on, or down the axis from the rear for clockwise?
Thanks. > Anybody interested in that hal code? > > > -----Original Message----- > > From: Ken Strauss <ken.stra...@gmail.com> > > Sent: Friday, March 15, 2019 3:03 PM > > To: 'Enhanced Machine Controller (EMC)' > > <emc-users@lists.sourceforge.net> Subject: Re: [Emc-users] Spindle > > motor coolant advice needed > > > > > -----Original Message----- > > > From: Chris Albertson [mailto:albertson.ch...@gmail.com] > > > Sent: Friday, March 15, 2019 1:44 PM > > > To: Enhanced Machine Controller (EMC) > > > Subject: Re: [Emc-users] Spindle motor coolant advice needed > > > > > > When I had a coolant tank, for a different purpose, I put > > > automatic "anti freeze in the water. It is make just for this > > > purpose and is non-corrosive with materials used in car engines. > > > > > > Also, if the water recirculates it will eventually warm up. I put > > > a 12 volt fan on the tank lid and made it into an evaporative > > > cooler. Then you top off the tank with new water now and then. If > > > the water is taking even 25 watts of heat from the system it will > > > heat up quite a lot unless you rig some kind of cooling. > > > > How about using a radiator like > > https://www.amazon.com/Computer-Radiator-Water-Cooling-Cooler/dp/B07 > >9D HJ91F/ which is intended to cool CPUs? It comes with mountings for > > three 120mm muffin fans. > > > > > > > > > > _______________________________________________ > > Emc-users mailing list > > Emc-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > > _______________________________________________ > > Emc-users mailing list > > Emc-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-users > > Cheers, Gene Heskett Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
