Ultraseal question

[babyblues]

I have a question about the vacuum stage. This may be a dumb question, but can I just pull a vacuum and then shut the pump off then seal the pot? Or do I need to keep the pump running the entire time? My pot will hold a vacuum for quite a while.

 

[Ankrom Exotics]

I leave the pumps running.

I have clear lids on my chambers and have the ability to watch what's going on. When the pumps are shut off and the valves are closed the bubbling stops within a couple minutes. Turn the pump back on and the bubbling resumes.

Logic dictates that if you aren't seeing air bubbles, you aren't removing any air.

 

[Rifleman1776]

Since he can see what is happening, I would say that Pat's observation makes sense. I was going to say that if your pot will hold the vacuum shutting off would be OK. When I did the US test, I left the pump on for about 1/2 hour at 23 inches.

 

[wolftat]

I run my pump for a little while and every now and then kick it back on. I haven't had any problem with getting full penetration.

 

[wdcav1952]

I run my pump for a little while and every now and then kick it back on. I haven't had any problem with getting full penetration.

You are lucky!!

 

[GouletPens]

I agree...if not continuously, then re-vacuum it at least every 5 minutes or so.