I have a Platinum XL set up to work with the Homefill II compressor. I set the oxygen concentrator at 2.5-3LPM and verfied that the Oxygen output from the main port is >93%.
I connected the compressor through the rear output port and it has been unable to fill the bottle due to low oxygen input from the concentrator. I tested the output from the rear output port from the concentrator and it is indeed greater than 90%, however the flow output is less than 1LPM.
Should the output port flow be so low? I cheated the set-up to make sure that the compressor worked by connecting it to the front port of the concentrator instead of the correct port, and it did manage to get high O2 and fill the bottle intermittently. However, this is explicitly contraindicated by the manufacturer.
