[Fwd: Shutdown raith SNF 2007-04-03 15:50:02: Electron optics boards temperature exceeds limits -- system shut down for repairs]
jwc at snf.stanford.edu
Tue Apr 3 17:42:25 PDT 2007
System is down and off line to users this evening. We are experiencing
higher than normal temperatures in the E/O card cooling section. WE
will flush and refill the cooling lines tomorrow and continue to address
other service related issues on the tool.
FYI: Andrei Faraon has my permission to troubleshoot the system overnight.
-------- Original Message --------
Subject: Shutdown raith SNF 2007-04-03 15:50:02: Electron optics boards
temperature exceeds limits -- system shut down for repairs
Date: Tue, 3 Apr 2007 15:50:05 -0700
From: jwc at snf.stanford.edu
To: raith-pcs at snf.stanford.edu
AT 15:10 hours we encountered a over temperature alarm on the WRATH SEM's Electron Optics card when it exceeded 35 degrees Celsius. I checked the temperature and flow at the NESLAB chiller and it is well controlled at 20 degrees Celsius. Flow however is reduced from previous setting and large clumps of material can be seem accumulating at the flow meter valve.
System is now in shutdown mode until RAITH Field service can resolve this issue. RAITH field service is scheduled to arrive tomorrow mid day.
Also attempted to reset the E/O card but it still is in alarm mode.
System off line to users until further notice.
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