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Problem with old S5 PSU

9/7/2009 6:21 PM	Rate (0)
Pandiani Silver Member Joined: 10/31/2005 Last visit: 4/22/2025 Posts: 366 Rating: (31)	Hello, I have a problem very similar to the one described in this [url=/tf/WW/en/Posts/2772]thread[/url]. This S5 power supply unit is: 6ES5955-3NC41 and I have problems with fans which are causing PSU to shut down from time to time. I'm unable to find a manual that describes procedure for opening PSU in order to remove and clean fans and thermal diodes. Before considering replacement of PSU using this [url=https://support.automation.siemens.com/WW/llisapi.dll?func=cslib.csinfo&lang=en&siteid=cseus&aktprim=0&extranet=standard&viewreg=WW&objid=10805141&treeLang=en]data[/url], I would like to clean it from the dust (which is present in significant quantity) and try to test it. Does anyone have experience with this type of PSU or have the manual in which maintenance procedure is described? Thanks in advance.

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9/8/2009 10:01 AM	Rate (0)
Wizard Diamond Member Joined: 4/24/2006 Last visit: 1/22/2026 Posts: 9106 Rating: (1204)	Dear Pandiani, Perhaps the following manual might help: http://support.automation.siemens.com/WW/view/en/1085837 See chapter 4.3 Best regards, Wizard

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9/8/2009 7:27 PM	Rate (0)
Pandiani Silver Member Joined: 10/31/2005 Last visit: 4/22/2025 Posts: 366 Rating: (31)	Wizard, thank you for your help. I have alreaady searched the forum and found this manual. This is for different PSU, but it is similar. I have downloaded this manual before. However, I posted the question here just in case some other had similar problems orcorrect manual. I'll wait bit longer before I proceeed according tomanual I have. Regards, Pandiani

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