Hello again everyone,
To follow up on my original posting, I have already heard responses from
several people. I will wait a few more days and compile the responses.
Based on the responses I have already received, I was a little surprised
to learn that several of you have cryoprobe service contracts in place,
and that the helium compressor as well as the annual coldhead
maintenance is included as part of the service contract.
So, I'd like to add two more questions:
* Do you have a cryoprobe (or overall spectrometer) service contract
where the helium compressor is covered?
* What is the approximate annual rate for such a service contract?
Thanks all.
Bob.
On 14/01/2016 9:10 AM, Bob Berno wrote:
> Hello everyone,
>
> My apologies if this question has already been asked before.
> We recently had the 10,000 hour cryoprobe service on our old
> TCI-cryoprobe.
> During the maintenance, the Bruker service engineer noted that the
> helium compressor has already logged over 92,000 hours of operation,
> and that before the next regular maintenance we will cross the 100,000
> hour milestone (assuming no catastrophic failure).
> He gave me the impression that many helium compressors fail long
> before they reach this milestone.
>
> So, I wanted to ask the community about your experiences with helium
> cryoprobes (or more generally helium compressors).
> My questions are:
>
> * How long has your helium compressor been operational?
> * Have you suffered a helium compressor breakdown?
> * And are there any telltale signs that the failure is imminent?
> * How expensive is it to repair/replace?
>
> I am also worried about our newer helium compressor. In that case, it
> has about 50,000 operational hours. But two years ago it suffered
> frequent unscheduled warm-ups due to issues related to the chilled
> water in that building.
> I would greatly appreciate any experience you can share. I will be
> sure to post a summary.
>
> Thanks,
> Bob.
> --
> Dr. Bob Berno
> Manager: McMaster NMR Facility
> Department of Chemistry & Chemical Biology
> McMaster University
> 1280 Main Street West
> Hamilton, ON
> L8S 4M1
> (905) 525-9140 x24158 or x24686
> Fax: (905) 522-2509
> http://macs.mcmaster.ca
>
> -------------------
> If you have an accommodation need for a planned meeting,
> please e-mail me directly and I will do my best to make appropriate arrangements.
> Should you require any materials sent via this e-mail address in
> an alternate/accessible format, please let me know.
--
Dr. Bob Berno
Manager: McMaster NMR Facility
Department of Chemistry & Chemical Biology
McMaster University
1280 Main Street West
Hamilton, ON
L8S 4L9
(905) 525-9140 x24158 or x24686
Fax: (905) 522-2509
http://macs.mcmaster.ca
Received on Thu Jan 14 2016 - 10:37:42 MST