Health care provider had set up the machine and strung the lines.Once it was indicated to connect disposable to recirculation, health care provider connected the lines and went to release the air form the venous chamber but it would not release by opening the valve like it should.Health care provider tried to pull the air out with a syringe but once it was released it filled with air again.Health care provider tried to connect the couplings, while the blue was disconnected it filled with water but filled with air again as soon as the blue coupling was connected.All machine tests ran successfully but the chamber was still full of air.After discussing the problem with management we decided to take down the machine.The system passed all tests to start treatment but the chamber was still full of air.We pulled the lines and saved them to be checked for defects.Lot # a2200267.
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