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Joined 1 year ago
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Cake day: December 4th, 2024

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  • Normally phosgene isn’t quite that deadly. If you catch it full concentration then you’re in for a bad time as your lungs start blistering but that definitely isn’t something that happens from a small leak unless its also in a confined space. I’ve gotten a face full of phosgene a few times on the job and you definitely notice it. Idk what it smells like because to me it just smells like pain. It feels like you just took a huff off a bottle of drain cleaner. If you get hit with enough of it, it’ll leave you short of breath and your chest burning but the only time I ever got hit with that much was the time I took a plasma cutter to an old refrigerant can I had forgotten to purge with nitrogen first while working in a closed garrage.

    Suffice it to say, you would definitely know it if you got exposed to any significant amount of phosgene.






  • HVAC-R tech here.

    Not sure what you mean about simulating high temps on the thermostat. If you want to trick the thermostat into seeing a higher temp than it is actually at then you would need to find the temp sensor on the thermostat (usually a thermistor) and replace it with something where you can manually control the input like a potentiometer if there was a thermistor there.

    If you’re talking about simulating calls from your thermostat to your hvac system, then you can usually do that with just some jumper wires if your hvac system has a built in transformer (almost all new systems do). You just remove the thermostat and jumper the hot wire (R or Rc) to whatever call you want to make.

    Edit: I should probably note that if you accidentally jumper anything to ground or to common then you will likely trip the breaker or blow the fuse on your systems transformer. If you do that then you’ll need to find that transformer (usually in the airhandler, assuming a standard residential split system) and reset the breaker or replace that fuse before your system will work again.














  • Eh, I’m the guy who has to scrub the snot out of them and I still get ice unless I actually know it’s a place that doesn’t clean the machine. Most of the stuff that grows in them is disgusting to look at but benign. Even the concerning ones are often only an issue if inhaled. That’s not to say that a filthy ice machine can’t transmit foodbourne illness. They definitely can. But I’ve seen far more concerning things in various commercial kitchens than dirty ice machines. Also, this will vary by area, but usually the things get plugged full of lime scale to the point that they stop working long before the biofilm gets truely horifying. The only places I ever see where the biofilm gets really bad are bars and places that do in-house baking because yeast loves ice machines for some reason.


  • If it actually tastes like a lake then it’s probably the ice. Ice machine bins are notorious for growing algae in the bottom and no business likes sanitizing the bin because that requires emptying the bin and therefore not having ice for a while. I’m also willing to bet that dunkin “does their own ice machine cleanings.” Which usually means that once it gets so crudded up that it stops working then they put it through a clean cycle so they can tell the repair tech that that they now have to call that they clean it. Ice machine manufacturers also don’t like to advertize that the built in cleaning cycles don’t actually remove the need to have them professionally cleaned; you only find that out if you read the service manual. Every 3-6 months you still need to take the whole thing apart to manually scrub the biological snot and limescale out of them.