Yup.... and when you pull the extra pounds of refrigerant out of the system, it works a lot better
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- posted
16 years ago
A/C working properly? Cost -> lower temp?
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- posted
16 years ago
I have not seen this on a TXV system, only fixed oriface/piston systems (10SEER).... Remember what I told you about putting the temp clamp on the suction as a "quick and dirty" method of indicating under/over charged systems?? Think about the ST with an undercharged system....superheat is very high(ST
75 - 85 degrees), overcharged system will be very low ...........ST below 50 and the lower the temp, the greater the overcharge. If a system is running with a 30 degree ST, you can figure a minimum of 2 - 3 pounds of overcharge on most resi systems. Also remember that I told you that the gauges are the very last thing you put to the system, after everything else is clean and right.- Vote on answer
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16 years ago
Not so fast Scooby Doo...
The overcharged system (if everything else is operating ok) is going to have a higher suction pressure (on an orifice metering system). On a normal system you're going to have a 70+ suction pressure (which is 41 degrees F with R-22). If the system is overcharged, the suction pressure goes up 70+ (which is 41+ F with R-22). Since you can't have a negative superheat, your suction temp is going to be 41+ F.
In order for your suction temp to be under 32 degrees F, the suction pressure has to be 58 PSI or under. That's not going to happen with a system that is overcharged, unless it has other problems.
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- posted
16 years ago
I agree that the system will operate better with a balanced charge. But I don't agree with your idea that an overcharged system can freeze up, unless it has other issues.
Please see my previous post on the explanation as to why it can't.
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- posted
16 years ago
Well, if its so universally clear why are several people arguing about it?
Pretty hard to argue over the meaning of noon & midnight; my initial point :)
btw no comment about your mis-reading of my posts?
I guess not, it must hard to admit you're wrong when you are so often.
please do try to read more carefully, it might make it easier for you to reply with something that makes sense
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- posted
16 years ago
Pretty hard to argue over a $320 electric bill.
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- posted
16 years ago
A normal R22 system will have a "normal" suction pressure of 60 -
70psi.....most of the scroll systems are closer to 60psi. also remember that when you have overcharge, and the temp drops on the suction line, the pressure is going to drop also. What your talking about is only a slight overcharge. With a gross overcharge, you have no superheat, and your ST is going to be around 32 degrees or lower, and the entire compressor is going to be sweating. I see a lot of that here.... "Billy-Joe-Jim-Bob" comes along and says "Its no cooling, let me throw in a couple of pounds of that freezone stuff"..... occasionally they will call him back 2 or 3 times, and the only problem was the evap coil was dirty.Try this... take a 10 SEER system, and dump in an extra 2 or 3 pounds of refrigerant then take a set of readings, then get back to me.
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- posted
16 years ago
Dirty evaporator... that's the OTHER problem, the overcharge wasn't the cause of the freeze up.
Grossly overcharged... is 5-12 pounds enough? I have recovered that much from a system to make it right! :-) These systems all had noisy compressor's due to slugging.
Had one the other day... 2-3 pounds extra... compressor was slugging.
Sorry, I just can't see an overcharged air conditioner freezing.
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- posted
16 years ago
That's why I never did argue about that "$320 electric bill"
I merely suggested the use of noon & midnight over 12PM &
12AM......the OP & others chose to argue about meaning of 12AM & 12PM.Pretty much a waste of time & un-necessary if noon & midnight are used.
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16 years ago
And your pretty much a waste of my time
Welcome to my killfile
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16 years ago
Sorry that you're confused with the facts..
If someone can't comprehend this ladies post, they sure as hell can't help her!
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16 years ago
Because this is USENET and thats what most morons do here.
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- posted
16 years ago
Youre not allowed to think like me. Sorry but youll have to be your own man for once.
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16 years ago
Thinking the same thing and thinking like "YOU" is not the same. God strike me dead in my tracks right now, if I start to think like a low life troll...
For god's sake don't let this thread die...
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16 years ago
strike me dead in my tracks right now, if I
Now the s**ts going to hit the fan...
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16 years ago
strike me dead in my tracks right now, if I
I was thinking the same thing...
Dont you have the capibility of kill filing the thread?
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16 years ago
God strike me dead in my tracks right now, if I
No can't do that... it's turned into a technical thread on overcharged systems freezing.
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- posted
16 years ago
Oh no! Not the ultimate insult! You've kill filed me...my feelings are SO hurt.
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16 years ago
Actually I'm not confused with the facts but your replies often do confuse me because they just don't follow.........
that would be lady's not ladies ....got the moot vs mute thing down yet? checkout dictionary.com
her!
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- posted
16 years ago
Oh no! Not the ultimate insult! You've kill filed me...my feelings are SO hurt.