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Message ID: 657     Entry time: Friday, April 20, 2018, 13:20
Author: Carla Babcock 
Target/No.#:  
Source:  
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Target Oven W.O#:  
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Status: Done 
Subject: BIAS* fan sounds like it is dying  

The fan in the EZL power supply is making a terrible noise - keep an eye on it, it sounds like it might give up soon.

Monday, April 23, 2018, 10:47: The back panel was opened. Original entry stated EZL power supply issue. Corrected to BIAS PS. High voltage group notified. Fan replacement required.

Monday, May 14, 2018, 13:20: BIAS fans, external an internal were replaced. Re-installed @ TS.

Monday, May 14, 2018, 13:26: BIAS ramped up to 10 kV. Response ok on epics and locally on the PS. No odd noise on the fans either. The issue appears to be fixed.

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