Howdy,
Arrange a different air flow to the spinner through a manual needle value
flow controller and adjust the flow manually. If all works well, then it is
the controller. If you cannot establish a constant spin rate manually, then
you have spinner problems.
woody_at_acornnmr.com
> -----Original Message-----
> From: Brian Breczinski [mailto:bbreczin_at_bucknell.edu]
> Sent: Monday, November 29, 2004 8:29 AM
> To: ammrl_at_ammrl.org
> Subject: trouble with sample spinning on Bruker ARX300
>
> Hello,
>
> We have been having problems with sample spinning.
>
> Previous problems, where the sample could not spin any faster than 12 or
> so, were remedied by removing the shim stack and cleaning.
>
> This time, after I brought our ARX300 back up (I had to shut it down for a
> planned power outage), the spin speed oscillated between approximately 12
> and 20 (it is set to 21). I can hear a "whooshing" noise from the bore
> when spin is on.
>
> My guess is that there is something wrong with the controller or detector.
>
> Is there any way to troubleshoot this?
>
> Thanks
> Brian Breczinski
> Bucknell University
Received on Mon Nov 29 2004 - 17:53:29 MST