ScorelessThrone
New CEG'er
I found the low pressure port, I just wanted to know if there were any precautions, or special fluids needed to recharge my A/C unit.
1999 Contour SE
1999 Contour SE
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Recharge A/C
- Thread starter ScorelessThrone
- Start date
Pip513
CEG'er
You need a vacuum first. Local shop can do it for you for like $40.
contour_r_us
Hard-core CEG'er
You should already have a vacuum if you have any cycling of the compressor. Only time you would be required to have vacuum pulled, would be if no compressor cycling and/or system has been opened anywhere - sealed system. Watch the video(s) at http://idqusa.com/
Well you are missing half of the equation for recharging the A/C system ... the high pressure side. Do you have a gauge set to properly check the system pressures?
Please do not use one of those recharge kits that was linked to for the videos.
Air in the system decreases the efficiency/effectiveness. The system should be brought to a vacuum to make sure there isn't a leak in the system. Chances are there is a leak because you need to refill the system.
Please do not use one of those recharge kits that was linked to for the videos.
Air in the system decreases the efficiency/effectiveness. The system should be brought to a vacuum to make sure there isn't a leak in the system. Chances are there is a leak because you need to refill the system.
Pip513
CEG'er
I thought it was best to vacuum it and get all the old freon out and then put in a whole new batch in to get it to cool the best.
projectSHO89
Hard-core CEG'er
I thought it was best to vacuum it and get all the old freon out and then put in a whole new batch in to get it to cool the best.
There's more to it than that.
jrichardson
Veteran CEG'er
First you need to remove all the old refrigerant by pulling the system down to a vacuum as close to 30 in/hg as possible at your elevation to remove all the refrigerant, air, and water from the system. this needs to be held for at least 20min.
With the system under vacuum you need to hold it for at lease 5 min to check for any leaks, drop in vacuum means a leak.
Then while the system is under vacuum you need to inject oil, just a couple ounces more than you removed with the evacuation of the system, followed by a critical charge (means you need to weigh the refrigerant).
this is a VERY simplified version of a proper A/C system recharge, it doesn't include refrigerant recovery which if you don't recover can get you in trouble if the EPA sees you releasing it.
I would suggest taking it to a shop, unless of course you have the proper equipment to properly weight the refrigerant to ensure a proper charge, something that can't be accurately measured with gauge pressures, and an accurate set of gauges to watch the vacuum readings.
With the system under vacuum you need to hold it for at lease 5 min to check for any leaks, drop in vacuum means a leak.
Then while the system is under vacuum you need to inject oil, just a couple ounces more than you removed with the evacuation of the system, followed by a critical charge (means you need to weigh the refrigerant).
this is a VERY simplified version of a proper A/C system recharge, it doesn't include refrigerant recovery which if you don't recover can get you in trouble if the EPA sees you releasing it.
I would suggest taking it to a shop, unless of course you have the proper equipment to properly weight the refrigerant to ensure a proper charge, something that can't be accurately measured with gauge pressures, and an accurate set of gauges to watch the vacuum readings.
ScorelessThrone
New CEG'er
thanks for the input, I'll be taking it to a shop to get in vacuumed, then I'll get them to recharge or charge it.