[3dem] FalconII cooling error after water chiller failure

Matthias Wolf matthias.wolf at oist.jp
Fri Nov 28 16:01:54 PST 2014

Hi Jan

I gather you know your chiller works again and that the water temperature is OK. 

First verify you have water flow:
Is the red indicator float in the show glass of the Falcon cooling rack between the min max margins?
If not, is there sufficient water pressure at the source gauge?
With water flowing, you should be able to adjust water flow at the rack (lift and pull dial to turn). If no flow, check function of both valves in the rack (use TEMspy to switch - can you hear the click, does indicator ball move?).

In TEMspy, clear all errors and restart cooling.

If all that checks out ok, but camera still not responsive, check optical cable connection between Falcon and controller box, unplug power cable at Falcon controller box (in the rack with PC), unplug Ethernet at controller box, reconnect power, wait a minute, reconnect Ethernet.

I wouldn't touch the camera itself.


> On Nov 29, 2014, at 02:32, Jian Shi <jamonshi at gmail.com> wrote:
> Dear Listers,
> Since no FEI guys answer my emails, I have to post my question here:
> Our water chiller failed on Sunday 2:30pm, and was only restored by Monday morning 11am. After restarting, the FalconII cooling only can reach half way to its setting point and gives a failure error continuously. According to the log, the FalconII temperature continues rise all the way up to 50 degree Celsius after water stops. Local engineer basically dismantle and reassemble the chip/cooling parts, increase water flow, lower the water temperature, etc. Nothing works so far. Now we in the long pause waiting a spare part without knowing what is wrong. 
> But why Falcon II temperature rise way above room temperature without water flow? Are 50degree damaging to the FalconII chip or internal electronics, thermal couple etc? Is this preventable in the future, since chiller failure are quite common? Did you have similar experience in your facility? Your inputs are appreciated very much.
> Thanks and Regards,
> Jian
> _______________________________________________
> 3dem mailing list
> 3dem at ncmir.ucsd.edu
> https://mail.ncmir.ucsd.edu/mailman/listinfo/3dem

More information about the 3dem mailing list