I was wondering if one of these 3cfm 2 stage pumps would pull enough to vacuum 25 feet of lineset for a minisplit. Have the guages and the 5/16th mini split adapter. If it is just a question of time, I can let the pump run as long as needed. I know it needs to get down to 28 and stay there for a good long while. Going through threads now gathering information.
http://www.harborfreight.com/3-cfm-two-stage-vacuum-pump-60805.html
http://www.harborfreight.com/3-cfm-two-stage-vacuum-pump-60805.html
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