Question about Atd Tools R134a Economy Brass Manifold Gauge Set - ATD-3687
A/C R134A Manifold gauges
How do you read R134A a/c manifold gauges
The blue gauge is the low side. It should read between 30 to 60 PSI depending on temprature. The red is the high side, and should read roughly 3 times the outside temp. Good Luck
Posted on Jun 22, 2009
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Posted on Jan 02, 2017
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