LOL........And that is why there is a big sign right on the door saying "No Flammables!" Lloyd E Duso Plant Manager (814) 535-3505 -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Stadem, Richard D. Sent: Tuesday, February 05, 2013 1:50 PM To: [log in to unmask] Subject: Re: [TN] Manncorp Trident Batch cleaner Onboard Cleanliness tester BOOM!!!! -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Ed Popielarski Sent: Tuesday, February 05, 2013 11:21 AM To: [log in to unmask] Subject: Re: [TN] Manncorp Trident Batch cleaner Onboard Cleanliness tester WARNING: Do NOT attempt to put 75% IPA in this equipment! <wink> Ed Popielarski Engineering Manager 970 NE 21st Ct. Oak Harbor, Wa. 98277 Ph: 360-675-1322 Fx: 206-624-0965 Cl: 949-581-6601 -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Richard Kraszewski Sent: Tuesday, February 05, 2013 5:55 AM To: [log in to unmask] Subject: Re: [TN] Manncorp Trident Batch cleaner Onboard Cleanliness tester Also remember that the ROSE tester 10.06 value is based upon the resistivity in 75/25 alcohol water solution rather the merely straight di water as seen in the batch cleaner. The conductivity to soil factors will completely different, so values will not correlate at all. Rich Kraszewski PLEXUS -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Watson, Howard A Sent: Monday, February 04, 2013 8:33 AM To: [log in to unmask] Subject: Re: [TN] Manncorp Trident Batch cleaner Onboard Cleanliness tester Ed, Thanks for the info. It does make sense to use it only for process control. I do wonder if the resistivity probe will have long term repeatability, or maybe it will get gunked up and drift. Thanks! Howard A. Watson Phone: 505-665-3402 -----Original Message----- From: Ed Popielarski [mailto:[log in to unmask]] Sent: Friday, February 01, 2013 3:21 PM To: [log in to unmask]; Watson, Howard A Subject: RE: Manncorp Trident Batch cleaner Onboard Cleanliness tester Howard, The resistivity monitor on the cleaner is intended to be a process control, not a spec. qualifier, i.e., if you always run 20 boards (same P/N) to a specific resistivity in the cleaner rinse cycle, you could expect similar results on ROSE testing between batches. This doesn't tell you if you meet 10 ug NaCl/sq in or not, it can only tell you you've done the same as previously. Ed Popielarski Engineering Manager 970 NE 21st Ct. Oak Harbor, Wa. 98277 Ph: 360-675-1322 Fx: 206-624-0965 Cl: 949-581-6601 -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Watson, Howard A Sent: Friday, February 01, 2013 1:47 PM To: [log in to unmask] Subject: [TN] Manncorp Trident Batch cleaner Onboard Cleanliness tester Hi all, My shop just bought a batch cleaner (dishwasher type); the manual says it is Aqueous Technologies, with an onboard cleanliness tester. This is a resistivity meter that measures the resistance of the rinse water, and I believe it has a range of 2k to 2000k ohm. This unit has both a closed-loop wash and rinse, and we are using DI water. Does anyone have any experience with this type of cleaner with an "onboard cleanliness tester"? Is this mostly for process control? The manual is recommending a baseline cleanliness of 200-400 kOhm. I realize that this tester is not going to provide a level of cleanliness or contamination of each board processed, but I'm not sure what it is good for other than indicating the rinse water needs to be changed. I was not involved in the selection of this system, but tasked with qualifying it. My previous experience has been with no-clean processes, so cleaners are new to me! I should add that currently we process a very small volume of PCBAs for space. All work is hand assembly and cleaning is by hand with Ensolv. The goal is to get away from Ensolv while still achieving clean boards. This shop has never done ionic contamination testing, ROSE, SIR, etc. I believe some people were sold on the "onboard cleanliness tester" as a cure-all for aqueous cleaning validation, but I'm skeptical as to the benefits. Any insight is appreciated. Howard A. Watson ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. 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