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Entry  Tue May 27 22:29:17 2014, Jenne, Update, PSL, PSL making noises 
    Reply  Wed May 28 11:55:16 2014, Steve, Update, PSL, PSL Innolight controller fan is noisy 2WinnoRFan.jpg
       Reply  Thu Jun 12 10:41:58 2014, Steve, Update, PSL, PMC-T trend of 4 years 4yTrend2Winno.png
       Reply  Wed Jul 16 15:26:48 2014, Steve, Update, PSL, PSL Innolight controller fan is dying 
          Reply  Wed Jul 16 21:23:35 2014, Manasa, Update, PSL, PSL Innolight controller fan is dying IMG_1659.JPGIMG_1658.JPG
             Reply  Thu Jul 17 17:19:25 2014, Steve, Update, PSL, PSL Innolight controller fan is dying with extra fan fanadded.png
       Reply  Wed Jul 30 09:51:18 2014, Steve, Update, PSL, PSL Innolight controller fan is noisy 
Message ID: 9998     Entry time: Wed May 28 11:55:16 2014     In reply to: 9997     Reply to this: 10030   10216   10295
Author: Steve 
Type: Update 
Category: PSL 
Subject: PSL Innolight controller fan is noisy 

Quote:

Also, while I was working on the PSL table, I heard noise that sounded like a bearing rolling around.  I suspected the HEPAs, since the one on the north east corner of the table has a problem when it's turned up high (we've known about this for a long time), however turning off the HEPAs didn't affect the noise.  The noise is strongest near the back of the PSL controller on the shelf above the table, and the PSL controller box is vibrating.  So, I suspect that the fan on the PSL controller box is about to give out.

EDIT:  To clarify, I mean the Innolight's controller.

 The bearing is chirping in the back of the 2W Innolight laser controller. It is loud enough to hear it. I placed 4 soft  rubber feet under the controller to avoid shaking other things on self.

The HEPA filter bearing becomes noisy at 50V

 Keep it at 20V for low noise

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