in today's video we're going to show you how to properly vacuum an HVAC system after you've raised and pressure checked the lines we're going to be using our navac 4cfm battery-powered vacuum pump and our true blue hose kit that is massive and allows us to do this in less than 10 minutes I'm going to time this whole process and show you how to do it so let's get to work so we have pressure tested our system we have one Schrader valve removed on the suction side and we're going to leave this one in we're going
to install our Schrader core removal tool get that nice and snug our Schrader valve is right here stuck to the end of that and then on the high side we're going to install our vacrometer this is made by CPS get that fully tightened power that up and now let's get our true blue kit out and show you how to install that so here's our true blue kit these are pretty spendy this is about 200 but it is worth its weight in gold so our true blue kit comes with a half inch fitting as well as
the quarter inch to go to our unit and go ahead and thread this onto our pump make sure it's snug our clamp is snug and next we're going to Route this side over to our quarter inch connection here and as you can see there's no Schrader valve here so we're going to get a nice suction here make sure our clamp is tight and we are ready to power our pump on now what we're going to do here is we're going to leave this open see how this has a slow start to not utilize as much
battery power we can run this for about 60 minutes but we're going to have this thing pumped down in probably less than 10 minutes so we're going to let that ramp up then we're just going to go ahead and open up this valve on our valve core removal tool this thing is extremely quiet I'm really happy with this new product really excited to uh to put it to work all right so let's go ahead and open this and you'll notice the pitch change now we're registering on our backrometer now the beauty of having this on
our liquid line is that it's at the farthest point away from this vacuum pump so it's going to give us a true reading now if we had our vacuum pump attached right here to our core removal tool we would probably not get an accurate reading because it's so close to the pump whereas now it's getting an accurate reading we're already down to 4 000 and it's been we probably started at 232 so let's use that as our reference in about one minute we've gone down to 2000 microns our Target is 500 microns so we're going
to get well below that and then we're going to do our Decay test and we're going to make sure that it doesn't creep up within five minutes up to 500 microns so we're just about at 500 we've been we started at 232 so it's been three and a half minutes and we're below our Target Micron level so we're gonna let this run until we get to hopefully maybe 150 microns and then we're going to turn that valve off which will isolate everything this little blue valve right here and we're going to let this sit for
five minutes and that's going to tell us if we're good to go or not I'm super impressed with how quiet this thing is it's a pretty spendy product at about eight hundred dollars I bought a separate battery just in case I would need that but this I think is going to be money well spent I don't have to run around trying to find an outlet and I can pull a vacuum in less than 10 minutes all right guys we're at 150 microns this is a two-stage pump so it toned down we're just about at the
10 minute Mark we're at 241. so what I'm going to go ahead and do is I'm going to valve off this guy right here we're gonna totally isolate that shut down our pump and we're gonna give this 10 minutes and if we don't get over 500 microns then we will have passed the Decay test it's 242 so we're gonna go to 252 and we're gonna make sure that we're not above 500. all right so I'm just working on getting my insulation put on here it is almost 10 minutes 252 and as you can see we've
risen 10 whopping microns so not even close to our 500 limit so this system is extremely tight really nice vacuum really good results from our pump so at this point what we're going to do is we're going to open up these and we're going to let our refrigerant into the lines so let's go ahead and disconnect this very good now we can move this aside and we've got plenty of room to work here okay so we're gonna go ahead and grab this guy that back in so while we've got our vacarometer still hooked up to
the liquid line where as you can see we're still at 180 it's well past our 10 minute Decay test so we're definitely good there I've got my Schrader valve here but I'm going to let the refrigerant in first then I'm going to put that Schrader valve in in case you're wondering these are set up to where a little bit of pressure on the refrigerant system is not going to mess these up so don't worry about that so I'm going to go ahead and open up the suction line first gonna crank this open all the way
okay so now since we have pressure you saw that this kicked out as soon as I did that so that's exactly what we want we're going to put down some pressure while we spin that Schrader valve into place as we get that we'll start to feel some resistance so that's completely closed and that's it now you always want to make sure that you have gloves on when you're taking off um your any fittings on these ports or if you're taking off your manifold hoses you never know when something's going to happen my dad told me
about this guy at his work that one time he messed up and he forgot to put the Schrader valve in or something and he went to cover it with his thumb with no um no gloves on or anything which you shouldn't do that even with gloves because it can go through a glove but he got frostbite on his thumb and almost lost his thumb so if something happens you can replace the refrigerant but you can't as easily replace a limb a finger so always keep that in mind all right so this one is fully seated
we're going to go ahead and take our cap snug it up and then afterwards we're gonna use our crescent wrench and tighten that up and with these two we're going to do this pretty quickly because these are not low loss fittings it's going to spit out a little bit of refrigerant but you want to make sure you do it pretty quick so you have minimal loss nothing on that one and not too much on this guy all right so let's go ahead and throw our cap on our other side well guys we are completely done
with this install super stoked to have it done really impressed with the navac pump and the true blue kit I highly recommend those I'll make sure and leave them in the video description but I hope you found this video informative as far as pulling a vacuum on your system and how to do it super fast now if you want to see some full AC installation videos check out my playlist right here and I'm sure you'll find what you're looking for until next time you guys be safe later
