I had my upstairs unit to quit cooling two weeks ago and I hooked my gauges up to it while it was running. Had 150 on the high side and 45-50 on the low side. The return refrigerant line was cool to the touch but not as cold as I thought it should be. Got my BIL to come out and check it (been running his own heat/ac business 29 years). First thing he hooked up was a Fluke digital thermometer to the low side line that also had a separate outside air temp probe and then hooked a gauge to the low side. As he explained it, the low side line needed to be within a degree or so of the air temp going back to return vent. Took less than a pound to get it back up to snuff. The next week, my downstairs unit killed the start capacitor for the compressor! Helps to have connections! Sounds like you've got a low charge issue.
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Today's Featured Article - Hydraulic Basics - Part 2 - by Curtis Von Fange. In the last entry to this series we gave a brief overview of hydraulic system theory, its basic components and how it works. Now lets take a look at some general maintenance tips that will keep our system operating to its fullest potential. The two biggest enemies to a hydraulic system are dirt and water. Dirt can score the insides of cylinders, spool valves and pumps. Wate
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