I can imagine only a couple places where a spark might happen in a residential freezer.
There is a switch that turns the light on, and that can be fixed by removing the light bulb.
Then there is the thermostat, which in old freezers used to be a bimetallic strip that closed the circuit when the temperature got too high.
But those were usually enclosed to prevent frost from gumming them up, and new ones are usually solid state.
The compressor and motor are outside of the freezer box itself.
And why would you have an open container of ether in a freezer?
On Tue, Apr 2, 2013 at 1:19 PM, Nathan McCorkle <nmz787@gmail.com> wrote:
Eugen, speaking from experience??? That sounds horrible no matter who it happened to.Do you think the change includes a brushless motor and solid-state relays? Or more than that (to make it spark-free)?--On Tue, Apr 2, 2013 at 2:56 AM, Eugen Leitl <eugen@leitl.org> wrote:
On Mon, Apr 01, 2013 at 08:30:48PM +0100, Cathal Garvey wrote:There's one major difference between consumer and lab refrigerators:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA256
>
> Kitchen freezer without auto-defrosting would be perfect, although
> Mega's advice is good: stuff the freezer with "thermal mass"
> (ice-cooler-packs) so its temperature stays fairly constant despite
> opening/closing/powercuts/defrosting-cycles-you-didn't-want.
>
> "Industrial" equipment and "lab" equipment is sometimes valuable, and
> sometimes just a ripoff designed to scare beaurocrats who don't
> understand what they're paying for; when asked to buy a freezer for a
> lab by a PI, a bureaucrat is going to assume that a "lab" freezer has
> some magic special sauce a normal freezer doesn't. I have yet to learn
> of a magic freezer.
latter are explosion-proof (sparkless). If you ever had a fridge full of ether
vapor blow up on you, that's a very useful feature.
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