On Jul 25, 1:48 am, Kris Tilford <[email protected]> wrote:
> Anecdotal evidence says that the liquid-cooled G5 need to run > 24/7/365, and the more often they're shutdown the quicker they have > issues with the coolant causing corrosion and leaks. The coolant needs > to circulate in order to prevent the corrosion problem. that concurs with the stories i've heard. though FWIW, the leaking probably has more to do with the thermal cycling than with the fact that the coolant is circulating. if the liquid were capable of corroding the pipes at rest, circulating it would only increase the rate of corrosion. more likely, some of the metal parts undergo thermal fatigue as a result of the heating/cooling cycle. changes in the microcrystalline structure at the surface of the metal alter it's resistance to corrosion. these are well known and observed properties. -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/g3-5-list
