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Comment by swarfield

7 hours ago

Why the fuck are those fridges even networked!?

Because they need remote monitoring. I have experience with HVAC so I'm guessing these are similar: typically outsourced to a third party, typically a VM running on a dedicated server, accessible by Citrix or something similar. Supermarkets don't internally staff fridge repairmen.

  • They could just use connected temperature probes though. no need to connect the power supply of the damn compressor to the internet.

    • A lot of these devices are temperature controllable as the product in them may require different temperatures. They can have temperature ranges from refrigeration to freezing.

      Also adjust power usage depending on time of day and such.

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  • You don't need to network the fridge though... You just need a networked sensor...

    • That's assuming you just need to maintain a static temperature, which probably isn't the case.

Centralized maintenance and monitoring?

  • Monitoring makes sense, but it feels like it makes no sense at all to allow that kind of remote maintenance without staff on-site to OK and verify it - who could then do the maintenance themselves.

    Otherwise, this sort of spoilage could easily happen by accident as well.

    • > remote maintenance without staff on-site to OK and verify it - who could then do the maintenance themselves

      These are minimum wage workers - they don't have bean bags in the nap room, employee massages and stock options.

  • That might justify a temperature probe in a dumb fridge. This smells of a salesman being here not an engineer though.

They aren’t fridges, it’s a grocery store. You have obviously been in one, there are cases with a dozen doors that all open to the same cold case.

There is a ton of refrigerant piping, multiple condensing units, multiple evaporators, relays, and sensors connected to a controller that automates the refrigeration system. Not standalone refrigerators.

I shouldn’t need to list the benefits of remotely monitoring a system that can cause tens or hundreds of thousands of dollars if it fails.

  • Given the perfectly workable alternative of not having remote monitoring and simply having the store manager contact a repair tech on the exceedingly rare occasion that there is an issue, yeah I think actually you do need to justify the added complexity and expense of making this kind of mundane equipment internet accessible.

    • From my experience in a restaurant, those large commercial rooftop refrigeration/freezer units need attention several times a year. It's rare that your home fridge would have trouble that often but commercial units are more complicated and in a harsher environment. And supermarket installations are probably even more complicated.

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    • These systems only exist because those economics were decided decades ago. Issues are not exceptions in systems like this. They are huge, complex, and interface with the public.

      The systems track all kinds of data and are decent at predicting failures before they get expensive.

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Wait until people living north of Chicago learn that their thermostats are remotely controlled, when it's -20F outside.