[GreenKeys] Teletype Model 15 power Q's...

[drlegendre .]

"Such (asbestos insulated wire) is not normally dangerous if intact, but
chewed on by mice,
may be a problem, since the asbestos might leak out as powder
and become an inhalation risk.  Not sure what to do in this situation."

If I felt the need to remediate asbestos crud in a piece of equipment like
this, here's how I'd proceed. This is just my own process, and I've done it
before..

Take the machine outside, and blast it out with compressed air, while
wearing a particle mask. Orient your operation such that the dust goes
down-wind. Use a brush to continuously knock loose any dust & fragments
that you can find.

Next, switch to a wet-dry vacuum cleaner with a HEPA filter and some water
in the bucket to drown the dust. Again, with a brush, suck up everything
you can.

Finally, wipe it down with water or alcohol, let it dry and shoot the
remaining wires in a plain rattle-can clear-coat - acrylic enamel or
whatever. This will help to seal the surface and prevent any more egress of
dust and fiber.

If you feel the need..

On Thu, Nov 10, 2016 at 6:28 PM, Eric & Jia Bigham <hanyou at xsmail.com>
wrote:

>
> Hmmm, just did some resistance measurements ;o … the DC terminals measure
> 810 ohms with the test nob in both positions and the jack line measures
> about 100 ohms the same ;o .  Could the test nob have been bypassed
> somewhere ;o ?  There is that rewiring in the back - wires that I can’t
> immediately find on the diagram ;o .  Would trying to apply a low voltage
> to the DC terminals, just to see if there is a response somewhere, be a bad
> idea ;o ???  :)
>
>
> > On Nov 10, 2016, at 4:21 pm, Jim Haynes <jhhaynes at earthlink.net> wrote:
> >
> > And when the line-test knob is pushed in, if you measure on the cord
> > with the phone plug, you'll probably see a fairly low resistance, which
> > is the selector coils alone.  If you see an open circuit, well you'll
> > have to do some tracing to see what is wrong.  The circuit should lead
> > through the selector coils, through the keyboard contacts and through
> > the line-test switch and the send-receive-break switch.  With the
> > line test knob pulled out you'll probably see a low resistance across
> > the phone plug.
> >
>
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