Electronics Forum | Mon Aug 31 12:37:39 EDT 2009 | rocko
Hi All, As a result of equipment damage I have a problem with a cleanliness of printed circuit assemblies. One whole production batch was polluted by ionic residues because a large amount of hard water had been penetrated in the water-supply system
Electronics Forum | Tue Sep 01 20:46:03 EDT 2009 | davef
No, put a thermocouple on the heater and monitor the temperature during cleaning.
Electronics Forum | Tue Sep 01 11:25:19 EDT 2009 | rocko
Hi davef, Thanks for the suggestion. I have inspected the heaters but I think they are OK (no visible coating, deposits, etc.). Unfortunately, I'm not sure that the residues are ionic. It was just preliminary report of the person responsible for the
Electronics Forum | Mon Aug 31 18:18:45 EDT 2009 | smtdrkd
You may like to contact Mike Bixenman of Kyzen Corporation at 615-831-0888 or Ravi Parthasarathy of Zestron Corporation at 703-589-1198.
Electronics Forum | Tue Sep 01 06:55:22 EDT 2009 | davef
Rocko: While you're rooting around with the cleaner to better understand the issues with your water supply, monitor the heaters of your cleaner. We've had instances were the heater control has created "white haze" problems. Are you sure the residue
Electronics Forum | Wed Sep 02 11:54:34 EDT 2009 | davef
You can determine empirically what will work. * Use ion chromatography [IPC-TM-650 2.3.28] to evaluate the residues and determine if the residues must be removed. * Use energy dispersive spectroscopy for the elemental analysis or chemical characteriz
Electronics Forum | Wed Sep 02 02:45:01 EDT 2009 | rocko
Hi All, Let me summarize the key facts and findings: 1) This is not a permanent problem. Only one production batch was affected. The cleaning solution was exchanged and now the cleaning process runs normally. 2) Probably the residues are not ion
Electronics Forum | Tue Sep 01 02:54:30 EDT 2009 | rocko
Hi davef, In response to your questions: 1) It is a programmable washer designed for the tough demands of industrial applications. There is an integrated forced air dryer with both coarse and HEPA filters. 2) The surface of the PCB panel, the comp
Electronics Forum | Wed Sep 02 21:57:17 EDT 2009 | davef
contacts for cleaning contractors are: * Petroferm Contract Services [www.partscleaned.com] Franklin, Ky * Aqueous Technologies [www.aqueoustech.com] Rancho Cucamonga, CA * FinePoint Precision Cleaning [www.finepointinc.com] Kokomo, IN * Austin A
Electronics Forum | Mon Aug 31 21:47:56 EDT 2009 | davef
In response to your question: 3 Saponifier / non saponifier 3a Saponifiers: * Aqueous Technologies: PCB-Wash http://www.aqueoustech.com * Kyzen: XJN http://www.kyzen.com * EnviroSense: Enviro Gold #816 http://www.envirosense-inc.com 3b Non-Sapo
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