(Topic ID: 223991)
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Quoted from chad:Isn't this dangerous for playfields .?? The pro strength
If used on a factory cleared pf nothing will clean it better, if the pf is bare just use goo-gone and be prepared for your arm to fall off. lol
Quoted from PinballAir:Has anyone removed mylar with Freon?
Freon is HIGHLY toxic not a good idea at all!!! Believe me I was a professional mechanic we were sticklers in the shop for recovering freon. Besides it wouldn't work anyway it pulls heat from the air in a confined gaseous state as soon as you spray it most of it would escape.
Freeze spray works just fine. It only pulls up the paint when the mylar has bubbled/lifted and has dirt underneath it and nothing will prevent that from not happening. You just have to let the freeze spray take hold, don't get impatient, keep it frozen and work in small areas.
Personally I like using the hair drier more I feel like you have more control, a heat gun is overkill.
Quoted from PinballAir:I have been in walk in coolers and freezers where dry ice was in use. I would rather use refrigerant.
Dude I don't know where you were trained but ALL FREON IS HIGHLY TOXIC! We've had many of EPA meetings and safety classes about recovering freon prior to working on a/c systems for cars. The recovery machines we used in our shop at Lincoln were not cheep. It's NOT "air in a can" its a serious chemical that may cause DEATH...in a can! lol
R-12 was used in the 50's-70's for cooling systems, R-134a is the standard for the automotive industry nowadays. You can convert a old car to 134 if you just change out the catch can.
https://www.cshvac.com/dangers-breathing-freon/
EPA on Freon...
Quoted from PinballAir:Yes it is.
And, I am fully trained and licensed.
The fact of the matter is, that if you are in the trade you will be exposed to it.
Generally, we are all exposed to it from time to time.
Did any of the evaporators in those autos ever leak?
With the windows closed the occupants of that auto were exposed.
If someone's central air conditioning has a leak in the evaporator are the occupants of that house not exposed?
Restaurants, shopping malls, processing plants, any place that has air conditioning or refrigeration will have refrigerant floating around at some point.
We are subjected to all kinds of chemicals today whether we know it or not.
When I get a car with a leak I never charge it to find the leak unless I absolutely have to cause it has no die in the system and its a pinhole leak, and even then I would do that outside with a minimal amount from a can and die in my gauges. You can find the leak using a uv light, there's usually residual die in the system, fix the o-ring or compressor then pull a vacuum and let it hold for a while to make sure its not leaking before you recharge it. I wouldn't intentionally expose myself to freon to do the same thing as non toxic freeze spray would do with virtually no difference. All your doing is freezing the glue and the mylar will peel right off, using a hair dryer actually softens the glue and makes the next step of removing it that much easier.
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