Robert Atkinson wrote: > Hi Chuck, > I'd agree on the use of connector wipes, but doubt that they have > silicone as a lubricant. Silicone oil or grease is not generally > suitable as a lubricant on electrical contacts as it can form an > insulating layer that is virtually impossible to remove. This is > especially true of contacts that may arc, even slightly. Many years ago > when the UK telephone system was still electromechanical they had a > sudden spate of contact failures. These only occurred close to the floor > and the cause was traced to a change in the floor polish to a silicone > formulation. > > Robert G8RPI. > > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On > Behalf Of Chuck Harris > Sent: 15 October 2006 16:15 > To: Discussion of precise time and frequency measurement > Subject: Re: [time-nuts] HP 5370A > > Didier Juges wrote: > > >> PS: The card edge connectors on this unit are extremely tight. I >> "easily" broke one of the extractor on the CPU card, and the ROM card >> > > > I am very careful to remove boards like this, I don't like to break the > extractors. Once I get them removed, I give the card edge a wipe with > one of those "gold saver" wipes made by Chemtronics and others. It adds > a little touch of a silicone lubricant to the fingers and reduces the > insertion force by about 5x. Plus, it cleans the gorp off of the gold > fingers. > > -Chuck > > _______________________________________________ > time-nuts mailing list > time-nuts@febo.com > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > -------------------------------------------------------- > Any opinions expressed in this email are those of the individual and not > necessarily Genetix Ltd (Genetix) or any company associated with it. This > email and any files transmitted with it are confidential and solely for the > use of the intended recipient. If you are not the intended recipient or the > person responsible for delivering to the intended recipient, be advised that > you have received this email in error and that any use is strictly > prohibited. If you have received this email in error please notify Genetix by > telephone on +44 (0)1425 624600. > > > The unauthorised use, disclosure, copying or alteration of this message is > strictly forbidden. This mail and any attachments have been scanned for > viruses prior to leaving Genetix network. Genetix will not be liable for > direct, special, indirect or consequential damages as a result of any virus > being passed on, or arising from alteration of the contents of this message > by a third party. > > _______________________________________________ > time-nuts mailing list > time-nuts@febo.com > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > According to the Material safety datasheet, Chemtronics Goldguard consists of 94-99% n propyl alcohol plus 0.1-1% polyphenyl ether.
Bruce _______________________________________________ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
