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SportTrac Discussion
General Sport Trac Discussion
Question on AC repair cost
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<blockquote data-quote="EddieS&#039;04" data-source="post: 919879" data-attributes="member: 61136"><p>Gavin, hvac gauges measure in "hg. 30"hg being perfect vacuum. Cant be acheived, outside of special labs or outer space.. The best pump I have used only pulled 29. If you pull at least 25"hg all you have to do is Let the pump run for a longer period of time. Before you block it in for the hold test. It will pull all the moisture out. Just takes longer. Maybe one of our certified hvac techs will chime in.</p><p></p><p>You dont have to weigh 134A freon, If you know how to read your gauges along with ambient temp and evaporator discharge temp. Used my charts for many a year. Always got it right.</p></blockquote><p></p>
[QUOTE="EddieS'04, post: 919879, member: 61136"] Gavin, hvac gauges measure in "hg. 30"hg being perfect vacuum. Cant be acheived, outside of special labs or outer space.. The best pump I have used only pulled 29. If you pull at least 25"hg all you have to do is Let the pump run for a longer period of time. Before you block it in for the hold test. It will pull all the moisture out. Just takes longer. Maybe one of our certified hvac techs will chime in. You dont have to weigh 134A freon, If you know how to read your gauges along with ambient temp and evaporator discharge temp. Used my charts for many a year. Always got it right. [/QUOTE]
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SportTrac Discussion
General Sport Trac Discussion
Question on AC repair cost
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