2:03 PMCalifbill
- show quoted text -
Freon cleaner was expensive. We got it in 5 gallon cans to clean our
computer equipment in the 1960's. EPA Was what phased it out as cleaner,
not cost.
.......


Cost was cheap.the tax ate it out of production

Tim wrote:

2:03 PMCalifbill
- show quoted text -
Freon cleaner was expensive. We got it in 5 gallon cans to clean our
computer equipment in the 1960's. EPA Was what phased it out as cleaner,
not cost.
......


Cost was cheap.the tax ate it out of production


Freon was a banned item. Same reason it went out in car AC?

On Mon, 28 Nov 2016 11:58:12 -0600, Califbill
wrote:

wrote:
On Mon, 28 Nov 2016 08:31:33 -0800 (PST), Tim
wrote:

If you want to dry it good. Hive it a good shot of brake-clean or better
yet, starting fluid ( eather) then let it sit. It'll be dry as a desert
bone in moments. Then use light gun oil on reassembly.

The mineral spirits and machine oil thing cuts out most of this drama.
The solvent does a good job of cleaning things and the oil remains
after you wipe or evaporate off the spirits.
In an ultrasonic cleaner you just start it up and go get a cup of
coffee.
IBM used to have a couple of big sprayer type cleaners at 1801 K to
clean typewriters and that was the mix they used (mineral spirits and
IBM #6 oil) ... until the fire marshal found out. I ended up with one
of them after that. You could get a whole VW or Harley engine in one.
Run it about an hour and they came out looking brand new.
They did smoke a might after you put them back together, indicating
how much oil did penetrate the pores of the metal.


We had spray booths, where you had a pressure wand like the car wash. Had
dirty solvent and clean solvent wands. Wash out the mechanical register or
accounting machine with dirty first and then clean solvent. Worked great
on camp stoves after we went abalone diving and fried the dinner.

This thing was bigger than a washing machine with a gasketed top on it
and a bunch of spray heads pointing in from several directions with a
turn table in the middle. There was a 1/2 horsepower pump that really
got the solvent moving.

On Mon, 28 Nov 2016 14:03:20 -0600, Califbill
wrote:

Freon cleaner was expensive. We got it in 5 gallon cans to clean our
computer equipment in the 1960's. EPA Was what phased it out as cleaner,
not cost.

You are both right. The "cost" was the tax the EPA put on freon. I
still have a can or two of the old freon spray.

On Mon, 28 Nov 2016 14:34:32 -0600, Califbill
wrote:

Tim wrote:

2:03 PMCalifbill
- show quoted text -
Freon cleaner was expensive. We got it in 5 gallon cans to clean our
computer equipment in the 1960's. EPA Was what phased it out as cleaner,
not cost.
......


Cost was cheap.the tax ate it out of production


Freon was a banned item. Same reason it went out in car AC?

You can still have R12, it is just so expensive nobody will use it in
Montreal Protocol compliant countries. I am not sure but it used to be
available in Mexico pretty cheap and China was still using it a lot.
They planned on building a billion refrigerators using R12 around the
turn of the century. I bought an R-22 mini split system in 2010.

2:34 PMCalifbill
- show quoted text -
Freon was a banned item. Same reason it went out in car AC?
-----

Sure it was banned but look at the price before it was. excise tax.

On Monday, November 28, 2016 at 3:03:26 PM UTC-5, Califbill wrote:
Its Me wrote:
On Monday, November 28, 2016 at 12:58:19 PM UTC-5, Califbill wrote:
wrote:
On Mon, 28 Nov 2016 08:31:33 -0800 (PST), Tim
wrote:

If you want to dry it good. Hive it a good shot of brake-clean or better
yet, starting fluid ( eather) then let it sit. It'll be dry as a desert
bone in moments. Then use light gun oil on reassembly.

The mineral spirits and machine oil thing cuts out most of this drama.
The solvent does a good job of cleaning things and the oil remains
after you wipe or evaporate off the spirits.
In an ultrasonic cleaner you just start it up and go get a cup of
coffee.
IBM used to have a couple of big sprayer type cleaners at 1801 K to
clean typewriters and that was the mix they used (mineral spirits and
IBM #6 oil) ... until the fire marshal found out. I ended up with one
of them after that. You could get a whole VW or Harley engine in one.
Run it about an hour and they came out looking brand new.
They did smoke a might after you put them back together, indicating
how much oil did penetrate the pores of the metal.


We had spray booths, where you had a pressure wand like the car wash. Had
dirty solvent and clean solvent wands. Wash out the mechanical register or
accounting machine with dirty first and then clean solvent. Worked great
on camp stoves after we went abalone diving and fried the dinner.

Back when I first started working after college, our company built PC
boards. After they went through the wave soldering machine, they were
cleaned in a tank of boiling freon. There was a spray wand and there
were cooling coils around the top to condense the vapor and return it to
the tank. You could stick your hand in it, and it came out
chalky-looking because the freon washed the oils from your skin. It was
only a couple of years before the freon became so expensive that the
industry went to water-soluble flux. At that point the boards went into
a commercial "dishwasher" of sorts for cleaning. Not as much fun as the
freon tank, but much better for the environment.


Freon cleaner was expensive. We got it in 5 gallon cans to clean our
computer equipment in the 1960's. EPA Was what phased it out as cleaner,
not cost.

For us it was cost. It was still available at the end, but had risen to more than triple the cost, and the end of availability was near. We converted before it became "unabotainium".

I remember when film editors poured freon from a glass bottles onto a soft clothing to clean 16mm film. The only protective gear was soft white gloves. Then a closed cabinet machine with outside venting was brought in to do that job.

wrote:
On Mon, 28 Nov 2016 11:58:12 -0600, Califbill
wrote:

wrote:
On Mon, 28 Nov 2016 08:31:33 -0800 (PST), Tim
wrote:

If you want to dry it good. Hive it a good shot of brake-clean or better
yet, starting fluid ( eather) then let it sit. It'll be dry as a desert
bone in moments. Then use light gun oil on reassembly.

The mineral spirits and machine oil thing cuts out most of this drama.
The solvent does a good job of cleaning things and the oil remains
after you wipe or evaporate off the spirits.
In an ultrasonic cleaner you just start it up and go get a cup of
coffee.
IBM used to have a couple of big sprayer type cleaners at 1801 K to
clean typewriters and that was the mix they used (mineral spirits and
IBM #6 oil) ... until the fire marshal found out. I ended up with one
of them after that. You could get a whole VW or Harley engine in one.
Run it about an hour and they came out looking brand new.
They did smoke a might after you put them back together, indicating
how much oil did penetrate the pores of the metal.


We had spray booths, where you had a pressure wand like the car wash. Had
dirty solvent and clean solvent wands. Wash out the mechanical register or
accounting machine with dirty first and then clean solvent. Worked great
on camp stoves after we went abalone diving and fried the dinner.

This thing was bigger than a washing machine with a gasketed top on it
and a bunch of spray heads pointing in from several directions with a
turn table in the middle. There was a 1/2 horsepower pump that really
got the solvent moving.


Ours was a booth. Probably 4' high, 8' long. And a pressure wand, like
the do it yourself car wash.

wrote:
On Mon, 28 Nov 2016 14:34:32 -0600, Califbill
wrote:

Tim wrote:

2:03 PMCalifbill
- show quoted text -
Freon cleaner was expensive. We got it in 5 gallon cans to clean our
computer equipment in the 1960's. EPA Was what phased it out as cleaner,
not cost.
......


Cost was cheap.the tax ate it out of production


Freon was a banned item. Same reason it went out in car AC?

You can still have R12, it is just so expensive nobody will use it in
Montreal Protocol compliant countries. I am not sure but it used to be
available in Mexico pretty cheap and China was still using it a lot.
They planned on building a billion refrigerators using R12 around the
turn of the century. I bought an R-22 mini split system in 2010.


You can get R12 as a HVAC contractor. Lots of home AC systems use the
stuff. Mine included.