I have the same problem and have cleaned every part I can get to on the arm.
There is a flexible bearing ring made of some compressed material (not rubber
or plastic) that was terribly dirty. I can get to the top one but cannot
figure out a way to get to the bottom one. I suspect that cleaning this
will solve the problem. It looks like it needs special tools to disassemble.
Brian Antalek
Bausch + Lomb, Inc.
1400 N. Goodman Street
Rochester, NY 14609
http://www.bausch.com
brian.antalek_at_bausch.com
(585) 752-8452 mobile
(585) 338-5635 office
> On Sep 30, 2024, at 5:32 AM, Olga Semenova (Staff) via groups.io wrote:
>
> Dear Tim,
>
> We also often experience BACS motion failure here in Dundee. I appreciate
> very much your advice on cleaning internal contacts and replacing impregnated
> rubber ring. I have a broken BACS piston which I can use to play around with
> the conductive rubber ring. Could you please share which blue rubber tubing
> fits your BACS and how do you replace it if it is not too big ask please?
>
> Many thanks,
> Olga
>
> From: main_at_ammrl.groups.io On Behalf Of Tim Claridge via groups.io
> Sent: 26 September 2024 13:47
> To: main_at_ammrl.groups.io <mailto:main_at_ammrl.groups.io>
> Subject: Re: [AMMRL] BACs downwards motion failed
>
> As described in Ulrich’s mail- this problem is (nearly) always
> associated with dirt on the contacts within the rectangular piston block-
> cleaning the piston arm itself is unlikely to resolve the issue. If the 4
> allen bolts are remove from the end of the block it is possible to access
> and clean the internal contacts as described. These touch on a (blue)
> rubberised ring that is conductive (impregnated) and when compressed (by
> the upward or downward motion of the piston) will complete the contact that
> indicates the motion is complete. Dirt on the contacts and/or the rubberised
> ring can lead to the upward/downward motion failed error. We used to keep a
> spool of the blue rubber tubing so we could replace this periodically to
> resolve these issues, in addition to cleaning. Too much grease on the piston
> can also cause grease to accumulate on the rubber which can exacerbate the
> problem, so go easy on the piston grease.
>
> Good luck.
>
> Tim
>
> Tim Claridge
> Associate Director, NMR Analytics
> +44 (0) 7842 000508
> Exscientia
>
> 155 Brook Drive, Milton Park, Abingdon, OX14 4SD
>
> Prix Galien International, Best Digital Health Solution 2024
> UK Queen’s Award for Enterprise in Innovation 2021
>
>
>
-=-=-=-=-=-=-=-=-=-=-=-
Groups.io Links: You receive all messages sent to this group.
View/Reply Online (#1677): https://urldefense.com/v3/__https://ammrl.groups=
.io/g/main/message/1677__;!!PvDODwlR4mBZyAb0!QPB89K276XesHWwX4z2YDr44l_O5-7=
3xPohoyabrcU-_SKZ23-GnVI_kQnEOeCDPCsL6IdJ3MoA1VyqC$
Mute This Topic: https://urldefense.com/v3/__https://groups.io/mt/108655772=
/7559972__;!!PvDODwlR4mBZyAb0!QPB89K276XesHWwX4z2YDr44l_O5-73xPohoyabrcU-_S=
KZ23-GnVI_kQnEOeCDPCsL6IdJ3Msb45td3$
Group Owner: main+owner_at_ammrl.groups.io
-=-=-=-=-=-=-=-=-=-=-=-
Received on Tue Oct 01 2024 - 04:45:35 MST