Okay so if you're doing a mini-split installation as a homeowner or
do-it-yourselfer you want to make sure you get yourself a good vacuum pump and
what you want to do is make sure that it's got plenty of oil in there when you
first set it up and you want to do your connections kind of like the way you see
them now so I'm gonna take a step back here and give you some give you a better
panoramic view here so if you want to go ahead and screenshot this video you can
right there because that's the way you want your connections to be and
basically your pump is going to connect to the middle here your blue line is
connected to the condensing unit you want to make sure you have this adapter
these adapters are important especially on the mini splits and you want to have
this open when your pump is running negative 30 is where you see it there
I'm gonna run the pump for about 15 minutes and so far so far it's been
running for almost four minutes so we're gonna let it run for about 15 minutes
then we're going to keep an eye on the gauge and make sure that the needle does
not move from where it's at and once you achieve that then you know your lines
are good to go and you can release the refrigerant into the system and we'll
show you how to do that as well
okay so once you have your pump running for a good solid 15 minutes and what
you're going to do is you're going to shut off your valve here so you're going
to close it off remember righty-tighty so you're going to close it then after
you close that you're going to go ahead and turn off your pump once the pump is
off and the valve is closed you're going to monitor that and make sure that it
does not move if it does not move that means your lines your refrigerant lines
your copper lines that you've already closed up and put your night log on that
means that they're going to be airtight and then you can release the refrigerant
into the system
okay so if you look closely there hasn't moved about 12 minutes I've gone by now
as long as you don't see it moving at all your your lines are gonna be
airtight you're not gonna have any leaks and actually we're are about 14 minutes
at the moment so then what you do after that and your connections are going to
be the same you can actually disconnect this once the pump is off anyway but
what you do next is you go here and on your skinny line you're just gonna
release the refrigerant into the system
here the refrigerant moving in there the idea to have one of these Allen wrenches
around once that's done you're good to go your refrigerant has now been
released into the system you want to go ahead and tighten these with an
adjustable wrench and then we're going to go ahead and run the unit
you