[Nhcoll-l] -80 Freezers

[Shoobs, Nate]

We have a fancy new ThermoFisher TSX60086A -86, and it had a 2nd stage inverter failure a few weeks ago, about 2 years into its service life.

Despite all the bells and whistles (including a sleek looking ~smartphone app~ that automatically notifies me of temp fluctations), troubleshooting it was a major pain that involved exporting logs via USB 2.0 port on the unit itself, emailing them to the fisher reps, and manually silencing alarms from the touch screen on the front door every few hours for a few days.

Thankfully it was repaired under warranty, but I’d avoid this model if I were buying another one. If we hadn’t had another lab’s freezer in the building as backup, we would have lost all the recent samples from two divisions!
The moral of the story, I suppose, is that the new machines are not always more reliable. I think chest units are a bit more reliable.
-Nate

--
[The Ohio State University]
Nathaniel F. Shoobs
Curator of Mollusks
College of Arts & Sciences Dept. of Evolution, Ecology, and Organismal Biology
Museum of Biological Diversity, 1315 Kinnear Rd, Columbus, OH 43212
614-688-1342 (Office)
mbd.osu.edu<http://mbd.osu.edu>

From: Nhcoll-l <nhcoll-l-bounces at mailman.yale.edu> on behalf of Bentley, Andrew Charles <abentley at ku.edu>
Date: Tuesday, May 14, 2024 at 1:35 PM
To: Hristova, Ani <hristov1 at msu.edu>, nhcoll-l at mailman.yale.edu <nhcoll-l at mailman.yale.edu>
Subject: Re: [Nhcoll-l] -80 Freezers
Ani We have been very happy with the new iteration of the Thermo Fisher -80 chest freezers. Granted we have not had them for very long (maybe a year) – they were purchased to replace failing older models. They are a lot more efficient

Ani

We have been very happy with the new iteration of the Thermo Fisher -80 chest freezers.  Granted we have not had them for very long (maybe a year) – they were purchased to replace failing older models.  They are a lot more efficient in that the compressors do not run constantly.  The freezer shuts down when it reaches temperature and only kicks in again once it warms up by a degree or two.  This puts a lot less strain on the compressors and will hopefully mean they will last a lot longer.

Chest freezers are so much more efficient than uprights in holding temperature.  Uprights lose so much temperature when the door is opened as the temperature literally just falls out of the freezer.  Attached is a quote we received from Fisher at the end of 2022 for both upright and chest however this includes out considerable University of Kansas preferred supplier discount – maybe UMich has something similar though

Hope that helps

Andy
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Andy Bentley
Ichthyology Collection Manager
University of Kansas
Biodiversity Institute
Dyche Hall
1345 Jayhawk Boulevard
Lawrence, KS, 66045-7561
USA

Tel: (785) 864-3863<tel:%28785%29%20864-3863>
Fax: (785) 864-5335<tel:%28785%29%20864-5335>
Email: abentley at ku.edu<mailto:abentley at ku.edu>
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From: Nhcoll-l <nhcoll-l-bounces at mailman.yale.edu> On Behalf Of Hristova, Ani
Sent: Tuesday, May 14, 2024 11:32 AM
To: nhcoll-l at mailman.yale.edu
Subject: [Nhcoll-l] -80 Freezers

Hi everyone,

The MSU Museum Vertebrate Collection is looking to replace our current -86 freezer used for DNA, tissue, and the like. Could you share tips or best practices that you used in choosing your freezers? For example, information like: most important product specs, particularly reputable brands, brands to stay away from, any issues you’ve encountered?

Thank you, and I’m looking forward to hearing your thoughts!

All the best,
Ani

Ani Hristova
PhD Candidate
Department of Integrative Biology
Ecology, Evolutionary Biology, and Behavior Program
Michigan State University

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