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Fruita CO | Hey Rich, I usually vac for about 20-30 min. unless I have something else to do...I've never seen any advantage to more time. Then wait to see if it drops 1" of vac. in 10 min., or if I can leave it over lunch hr., even better. Some book I read once said to do that, & it seems to work. If you have a leak, it'll show up shortly. At this altitude, 4600 ft., a vac. pump will just not pull as much as at sea level...& in this desert climate, there's not as much moisture anyway. I've seen instructions that said to vac for as long as 4 hr., & I agree that's a total waste of time. Almost seems as if you read a dozen different books, you'll get a dozen different ideas... | |
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How long do you leave the vacuum pump on the a.c. unit?
