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02-11-2012, 06:06 PM #1New Guest
- Join Date
- Feb 2012
Russell RLH100H22-E condensing unit
I'm working on a Russell RLH100H22-E condensing unit for a Med temp walk in box system. The system seems to be leaking freon. Unit was low on freon on Feb 2, so I charged about 3lbs r22. About 1 week later the system was extremely low again nearly flat. I recently performed a leak check on the unit but had no luck. No traces of oil spotted and when I pressurized the system with dry nitrogen the pressure did not seem to drop over a 1 hr period. Can there be something I'm not seeing overlooking? This system does have a reciever and operating without a fan cycle switch in 30f ambient temps. Any info would be helpful thanks
02-12-2012, 11:28 AM #2Professional Member
- Join Date
- Jan 2005
- Veterans Home Yaphank, NY
Evacuate through both "High" and "Low" side to 500 microns. Isolate the micron gauge and carefully monitor it. A slow rise will indicate moisture in the system, whereas a rapid rise would indicate a leak.
Also when pressureizing with "Nitrogen" mixture along with R22 and use an electronic leak detector.RAM Teaching Tomorrows Technicians Today.
02-12-2012, 11:44 AM #3
02-12-2012, 11:50 AM #4