Easy steps for Ductless mini split vacuum pump setup for 410a refrigerant

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[jamesrowe]

This is exactly what I was looking for. Answered every question that I have. I will be running my vacuum next weekend. I have done this before but been so long I was unsure of the steps. Thanks again. Great tutorial. I also love that there was no extra fluff involved.

[grzejnikMilosz]

I don't know why you have likes off Man. Your channel is the best source of simple and to-point step-by-step instructions for DIYs like me. Thank You!

[scottleppard]

Thanks for your video. I installed a multi zone system and followed your directions. Worked out perfect, thanks for the education!

[ericcunningham]

Thanks for your great explanation.

Are you pulling a vacuum with the high and low side valves closed?

If the low side valve is closed then how does the vacuum reach the lines? Does it bypass the closed valve?

In other words, does closing the low side valve just seal the unit from the low side line while the Schroeder valve still can access the line?

[steveelim]

It's more advisable to use a micron gauge than the manifold gauge to pull a vacuum. The latter does not have the pressure unit resolution required for a deep vacuum.

[JosStrange]

So then I just leave the blue hose on there forever?

[pyroshnid]

The instructions with my pump where not very good, this video made it so much easier
Thanks for the help, we now have lovely cool AC

[jasonparkinson]

This video helped me to finally understand-after watching other tutorials and not understanding. Thanks for sharing. 👍

[allansplace]

Thanks for a great explanation of how this is done. You saved me a couple of thousand in installation fees!

[eLectroMechanicalShenanigans]

Making a video exactly 4:10 long was a nice touch. 👌

[Moguiman]

Is the process the same for a multi zone unit? I'm installing an Alpine 4 zone Hyper-Heat

[michael]

What if it is a previously owned system with no refrigerant in it? What additional steps are required?

[joseriofrio]

By releasing the refrigerant with the manifold still connected, wouldn't the blue hose fill up with refrigerant? Are you saying this is a negligible amount of wasted refrigerant? Would it be worth getting a small shutoff valve to put right by the service port? Thanks for the great video!

[jaymbhalodia]

Basic question, so this valve is one way meaning once we put vacuum we do not need to do anything ? Just disconnect the pump ?

[jennifermartin]

How do you isolate the refrigerant into the outdoor unit before this procedure is done? I can't find any videos from anyone on that. Thanks!

[RonnieHopson-ne]

I may be wrong but if you close the valve after turning off the pump your no longer hooked to the system you won't know if it leaks down or not.

[JoeRod-rt]

I assume the AC unit is off while test is being conducted ?

[BoriPR]

I woulfd use a micron guage with the vaccuum. You want to make sure you dont have moisture or air

[Mike-]

Don't forget to shut the valves on the manifold before you shut the pump off. Why well because I once didn't do that and I sucked mineral oil from the vacuum pump back into the auto AC system I just got done replacing everything on. I had to completely disassemble and flush it all out replace the oil in the compressor. I have a really old vacuum pump from the 80's it was a good one back then just old maybe newer pumps have a way to keep the mineral oil from being sucked up. Once you turn off the pump now the system is at a vacuum and will suck back though the pump.

[TomSon-ejpw]

Do you need the red cable, or can you simply close the valve?