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Old Jun 11, 2009 | 05:30 PM
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Default Air conditioning question

If the ac sytem has not been touched for 5 years and there is still pressure in the system, is it safe to say there are no leaks?
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Old Jun 11, 2009 | 06:18 PM
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No. only means it still holds some pressure, not the high pressure you need for the freon.
evacuate the system and do a static vacuum leak back test.
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Old Jun 11, 2009 | 06:39 PM
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I take it that you depressed one of the check valves and you got a spray of Freon. In that case, it says that your system is sealed well and may be operational. It all depends on how much [static] pressure is in the system. With any system pressure, there should be no problem with turning it on; you can be certain that there is adequate lubricating oil and that there is no moisture in the system. Try it out....see what happens. The most you might need is a bit of a recharge.
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Old Jun 11, 2009 | 08:20 PM
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if there is pressure after 5 years then it is at worst a slow leak and you can probably get by with a recharge to top it off that will last a couple of years... alot cheaper than the labor to evacuate, find and fix any small leak, plus parts, and recharge , with oil charge, totally from empty...
those evacuators that suck up and store the freon ( whatever R-xx it is) are not cheap and shops charge alot to use it...

of course you can't legally dump freon into the atmosphere ( save the ozone layer so you don't get skin cancer ) so if you do have a leak you are obligated to spend the big bucks to fix it....

thanks to big brother for watching over us....
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Old Jun 12, 2009 | 08:00 PM
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thanks bros
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