EPU Freon

Just bought a 2016 Cascadia with a smart epu on it. Guys I bought it from had to do some work on it to get it to blow. Something to do with the fan not getting power. Anyways they said it doesn't cool very well and probably needs some freon. Apparently that not something this particular dealership does so I will need to figure out how to do it. So where's the nipple for the freon charge? I noticed one on the backside of the cab about 4 feet below the condenser unit but my freon connection deal did not fit on it so I'm assuming that's the low-pressure side and that there's a high-pressure side somewhere that is where I will need to connect my freon deal too. Were's is this located? I've looked everywhere and have not been able to find it. Thanks in advance.

 

Ok, I'll do that but in the mean time could you explain to me how it would be done properly?

 

Haha, yeah that's what I have one of those single hose deals with a gauge on it. Say's if it's in the blue area it has enough freon lol.

I figured I'd hook it up and see where the gauge goes and get an idea of whether or not it's low.

I know there probably inaccurate and cheap but it's worked on several occasions for me. That was on cars though.

I understand that they have specific capacity requirements and thus it is possible to overfill the system and cause damage to the compressor or at the least premature failure.

Still don't know where the lp line connection is.

I know should probably invest in some proper ac gauges. I think they have them at harbor freight for a decent price.

 

Ok, Thanks.