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My Adler Barbour seems to make refrigerant.
Hi, Neal,
You'll really need to put gauges on both sides to see what's going on. I spent MONTHS trying to sort out my Frigoboat; ultimately it failed, and I had to replace it. The cause is known, but the stimulus is uncertain (I'm one of only hundreds of similar experiences). The end result was the same. However... In the time I messed with it, I had wildly varying pressures. My issues were a blockage which would sometimes move, or not. Your gauges should have a temperature indication on them, and the suction side should read colder the lower the pressure. FWIW, +15psi should be about -8°F 134a temp. If you have a plate-mounted thermistor or equivalent for on/off, you could compare temps of that point (where it mounts) to the indicated temperature, with an IR heat sensor. It may not be exact (my and my technician's didn't agree, even with fresh batteries in both, and neither agreed with the thermistor's readout, nor the analog thermometer we hung in there, e.g.) but it will give you an indication of whether your gauges are correct. I'm assuming you've zeroed the gauge when not using it. I'm also assuming you purge your gauge line before attaching it, whether by bleeding or a can, the other way. When you get the lockdown/restart, where is the frost on your suction side? Right at the evaporator/cold plate-to-pipe? Somewhat inside it? Somewhere down the tube? Do you have an expansion valve, capillary tube, or constant pressure valve controlling your evaporation/boil/superheat point? Do you have a receiver/drier and sight glass? If so, any bubbles in the sight glass? In my new system, there's a CPV, and a pretty good tolerance for over/under charging as a result. YMMV of course. L8R Skip -- Morgan 461 #2 SV Flying Pig KI4MPC See our galleries at www.justpickone.org/skip/gallery ! Follow us at http://groups.yahoo.com/group/TheFlyingPigLog and/or http://groups.google.com/group/flyingpiglog When a man comes to like a sea life, he is not fit to live on land. - Dr. Samuel Johnson |
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