HVAC Vacuum Pump Hose Setup and Procedure, Start to Finish! Micron Level Testing

In this HVAC Training Video, I go over how to properly pull a vacuum. I go over Pump, Hoses, Vacuum Gauge, and Valve Core Removal Tool Setup. I go over how to test for leaks with the vacuum, proper test times, and how to break the vacuum by opening the service valves. Supervision is needed by a licensed HVACR Tech while performing tasks as Experience and Apprenticeship garners Wisdom and Safety.

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Information in this video is intended for educational purposes only. Any work related to the topics in this video should be performed by licensed technicians or by apprentices under the supervision of licensed technicians. AC Service Tech LLC is not responsible for any possible damages or injuries caused by the use or misuse of any information provided.
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[jackpast]

Nice one, Craig. Great seeing all the proper tools used, too. Thanks!

[billj]

It's a good idea to verify the schraeder cores are fully installed before removing the core tools. Backing the plunger out slightly and making sure the pressure bleeds off can save you from having a very long day.

[deloct]

Thanks Craig! And happy anniversary to you both!
God bless you Sr.

[jamesrooney]

just what i was looking for how to put shrader valves back in thank you like your videos you explain everything

[jimgill]

Excellent and very comprehensive video. Best vacuum video I've seen. Thanks.

[abnergarcia]

Excellent video!!!! I've been waiting for you to make this video. It answer some of my questions that I had about properly pulling a vacuum.
Thank you so much!

[dapperdon]

How would I know of my appion core removers are leaking? Cause i tried pulling a vaccum on my last three jobs & it would not pull down. It'll stay around 2, 000 microns until I pull a vaccuum through my guages & micron guage on the pump itself. I know there was no leaks in the system because I pressurized the system & bubble tested my work & system held pressure for 30min. My core removers only worked on two jobs. But when I attached my guages to the core remover & pulled vacuum it pulled down. Idk

[bobalbert]

Awesome video! and it's great that you also post the tools and where I can buy them!

[ptl]

Great videos!!! I'm a newbie to hvac and watching your videos really help me!! Keep up the great work!!!

[paulb]

Any chance you could do a detailed procedure for nitrogen and vacuum testing a mini split system? Thank you. You make great professional videos.

[blazeeisner]

Great video! I never thought about adding a third valve core removal tool for my vacuum gauge.

[jiangbian]

Thank you again for the videos. They are great and very helpful. One question is: Why do you leave the hose connection a little loose before you turn on the vacuum pump?

[deloct]

Thank you Craig! as always a very nice toturial.
It really does help me a lot as new in the Hvac field.
Have you use Stay Brute 8 by any chance? I would like to know if will be a good idea to try it with positive results.

[JAsh]

I use shrader core tools (one on each side), hook my 3/8 hose x 1/4 hose to the suction line, and my micron gauge on the liquid line. That way the micron gauge is actually as far as I can get it from the vacuum.

[embed]

Hi, is it necessary to open service valves before replacing Schrader valves? Curious...thanks!

[channelcatchaser]

Awesome job man. Thanks for sharing. What are the effects of pulling a vacuum lower than say 200 microns?

[seanmcdermott]

What are your thoughts about pulling a vaccum but attaching your micron guage away from the condensor service valves and instead at the evaporator coil service valve? Also what about using the 1/4 inch female connection on the vacuum. Ive been told that the 3/8 is the only one you should use.

[DanO]

What is your opinion on using a tread sealant like the blue nylog. I noticed that you didn’t use it, you recommended the oil. Thanks in advance!

[jc-rizu]

Do you triple evac the system. I take it that that unit is R-22 the older guys i use to work with just did liquid purge on those systems