Hi Jessica
We had a similar problem on a SampleXpress that turned out to be a dirty
sensor. Note, there was also indications from Topspin that it did not detect
the sample down. We first adjust the sensor settings in the SampleXpress menu
(on the LED screen). Then the problem came back at which point we had to clean
the sensor in the BST. Maybe someone has a protocol for adjusting the sensor
settings on the SampleCase and/or removing the BST to clean the sensor.
Marc
From: main_at_ammrl.groups.io <main_at_ammrl.groups.io> On Behalf Of Roberts, Jessica via groups.io
Sent: Wednesday, July 26, 2023 2:54 PM
To: main_at_ammrl.groups.io
Subject: [AMMRL] SampleCase loading errors
Hello everyone!
I have currently been having issues while using the SampleCase autosampler
on my 500 MHz Ascend instrument. There are two major issues that arise:
1. SampleCase fails to load a sample into the magnet. Autosampler will retrieve
the sample, send it up and across and down into the magnet. After a few seconds,
the sample will be ejected (often times by a sound that seems alot like building
pressure in an air line). The sample will then sit with the lift on for a few
seconds before repeating the process. After a few failed attempts the sample will
error out on IconNMR.
2. There is a less frequent issue but I will include it in case it is relevant.
I have seen the SampleCase retrieve a sample from the carousel, lift it to the
top track where it remains momentarily, then it will be sent back down to the
carousel. This typically times out after a few repeatedly failing attempts.
A few notes I will say:
-I am located at Ohio University where it has been quite humid as of late.
My air dryer does not have an autoswitch but I have powered it on today and
intend to run it for a few days to see if it improves things.
-Initial issues were only observed with one ceramic spinner, so I thought it
might be a problem with the old reflective tape. Now it can occur with a spinner
that worked for the previous experiment. In the most recent instance, the loading
error did not occur for a standard proton but for the immediately following
standard proton with rotation.
-It sometimes seems sporadic. A user can submit samples without issues while
another will have problems and it is hard to reproduce as I try to troubleshoot.
-I have not yet had issues with manual sample loading using lift on/off on
BSMS module so I suspect it is autosampler related.
Thanks everyone!
Jessica
-=-=-=-=-=-=-=-=-=-=-=-
Groups.io Links: You receive all messages sent to this group.
View/Reply Online (#367): https://urldefense.com/v3/__https://ammrl.groups.=
io/g/main/message/367__;!!PvDODwlR4mBZyAb0!V5-guAs6TF84qmi2MM1qH6jAExbvYldH=
ZS5Iok5_RbzGDGmnfdCFJU7-Ta_LvE4LjEYLmx9AkSY7AY_nRZTn3Q$
Mute This Topic: https://urldefense.com/v3/__https://groups.io/mt/100377317=
/7559972__;!!PvDODwlR4mBZyAb0!V5-guAs6TF84qmi2MM1qH6jAExbvYldHZS5Iok5_RbzGD=
GmnfdCFJU7-Ta_LvE4LjEYLmx9AkSY7AY8-7NwGCg$
Group Owner: main+owner_at_ammrl.groups.io
-=-=-=-=-=-=-=-=-=-=-=-
Received on Wed Jul 26 2023 - 13:42:00 MST