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The Daring Dufas[_7_]

On 3/2/2011 5:20 PM, wrote:
On Mar 2, 6:07 pm, wrote:
mm wrote:
Can you solder a thrmal fuse in place?

Someone gave me a disassembled sandwhich maker (heater). The
plastic/Bakelite? is broken where one of the four screws goes, but can
probably be fixed fine with PC-70.

The thermal fuse is burned out.

I have about 6 new thermal fuses of different sizes.

Can I solder the fuse in or must I crimp it?

In the past I've figured soldering would melt the fuse, but I haven't
had such good luck with crimping, probably because I don't have the
right sleeve or maybe not the right tool. With wire cutters, there's
a tendency to cut right through the whole thing, and with anything
duller, it's hard to squeeze hard enough.

Also, in the past the temp has burned off the melted fuse. What temp
would use for this small device, which I think just warms two slices
of bread. Would the amperage be a clue at all? The melting temp
of bread?

You use a heat sink between the device and the solder joint. I use an
alligator clip.

--
LSMFT

Force ****s upon the Back of Reason...
Ben Franklin-- Hide quoted text -

- Show quoted text -

I service machines that use thermal fuses, warranty calls skyrocketed
when they tried soldered thermal fuses. They make work initially but
fail later/

the soldering heat stresses and damages the heat fuse.....

better to use a crimp connector, and you may find the thermal fuse
blew because the units thermostat is bad, which caused the fuse to blow

A copy of something I posted about it in 2009:

The thermal fuses don't always use solder or more correctly a eutectic
alloy sensitive to a particular temperature. Many thermal fuses use a
set of contacts and a spring held in place by a thermoplastic resin
pellet which melts at a specific temperature allowing the spring pull
the contacts apart.

I've cut many of them apart just to see what's inside the darn things.

I always use little crimp connectors when replacing one shot thermal fuses.

TDD