Thanks again NicoM.
- Its orifice tube system and it is compressed in the liquid hose and comes with the hose. The only way to service it is to cut open the line with a hack saw or similar. So the answer is yes.
- This is a long story and may be part of the problem. I'll get back to you with a detailed explanation.
- I don't know for sure. I didn't have a kitchen scale around. My thought was to buy three cans of 12oz freon and fill the entire two cans and most of the third. My story relates to #2 above and I'll explain more in a later post. Trying to get my son off to school. :)
- O'Reillys, tap can 3 x 12oz freon with no additives or preservatives.
- No, the caps were removed on all parts as assembled and not before. It didn't take me long to assemble anything as I've been to this rodeo before. I worked in my garage which has a small window A/C unit. It was a little humid here in Arizona because it was monsoon season, but less than most of the country this time of year. The window A/C makes the garage a lot cooler than outside, but not cold. It is super hot here in the Phoenix area this time of year. Anyway, the window A/C should have removed all excess humidity pretty well. Recall I also vacuumed the system for 90 minutes to -29 PSI.
I'll get back to you with a more detailed explanation of 2 and 3 in about an hour or so.
Followup, here's my filling story,
I purchased this manifold gauge set from Amazon. It works well for measuring PSI and vacuum. This is what I used for performing the vacuum.
The problem with it though is yellow fill line does not directly fit nor have an adapter to that fits a standard can tap, so I wasn't able to use it for the fill.
I went to AutoZone and rented a manifold set from them. I've used theirs in the past and I know how to use it. I connected both the high side and low side to the A/C service ports with both the manifold and service port valves closed.
I then connected the tapped can (closed) to the yellow line on the manifold set. Started the car and opened the tap can valve and the service port valve to fill. Note here I did NOT realize to bleed the yellow line at the manifold set. So potentially air got into the system, but I'm not sure as you read on.
It did not seem to fill at much or at all. The can got a little cold but I also discoved the fittings were not tight at the connection between the tap can and the yellow line and freon leaked from there. I tightend and can got to room temp and never got cold again and nothing seemed to flow into the A/C. I later felt there was something wrong with the AutoZone manifold set and disconnected everything (closing all valves first and car engine shut off). I still have this can connected to the tap. If I had to guess I would say it has 33% to 50% freon inside. Again I cannot account for where the freon that left the can went.
I used the tap can with fill hose and gauge that I had around to fill the car with another can of freon (photo attached). The can got cold and seemed to fill. Meanwhile my compressor was not engaging and I probably got a full can into the system before I realized my high pressure sensor swith was not fully connected, once resolved the compressor clutch would engage and cycle on and off as expected.
I filled another full can (I'm on can 3 now). By now I don't know how much freon is in the system because I don't know how much, if any, freon entered the system because the first can going through AutoZone's manifold set. At minimum I would have 24oz at maximum I would say 28oz.
I started another can because the pressure reading on gauge of the tap/fill hose was rising and the compressor was not cycling as frequently and became fully engaged but still reading the low size (35 PSI or so). I got the pressure up to about 40 PSI and decided to take a high pressure reading.
I used the manifold set from AutoZone and it showed about 5-10 PSI on the low side and 10 or so on the high side. I surmised there was something wrong with this set.
I used my manifold set from Amazon and the low PSI reading was consistent with the guauge tap/fill hose, but the high pressure side was about 350 and that's where I stopped because it was too high on the high side. I didn't not want to continue and risk overcharging the system. So my fourth can probably also has roughly 33% to 50% freon inside.
So it could be slightly overcharged or it could be slightly undercharged. If it is undercharged, the high side PSI should show that as well as the low side. Correct me if I'm wrong. If it is overcharged, the low side PSI shouldn't be showing low. Correct me again if I'm wrong.
If air is in the system, would it show too low on the low side and to high on the high side? Right now my high side reading is probably a couple pounds above where it should be, but my low side is about 15-20 lbs low.