Editing Newport e500 Troubleshooting

[flag|biomed] [flag|student_wiki] [title|Newport e500 Troubleshooting] [summary]This Newport ventilator was released in December 2002, identified by model number SER500.[/summary] == Air Flow Not Shown == ''There is no exhale flow being monitored when the ventilator is turned on.'' === ***Tube is disconnected from exhalation flow sensor*** === The tubing connected to the exhalation flow sensor may be loose or may have become disconnected. Turn off the ventilator then reconnect the tubing and ensure it tightly secured to the flow sensor. Turn the ventilator back on and check to see if air flow is not being monitored. If air flow is still being monitored as zero, the problem may lie elsewhere, checkout some the other causes listed. === ***Solenoid PCB valve failure*** === The solenoid PCB may have been damaged over time and no longer operates correctly. If the solenoid PCB appears damaged, you can replace it by following this guide [https://pdfslide.net/documents/newprot-e500-service-manual.html|here]. === ***Analog PCB failed*** === The analog PCB may have been damaged over time and no longer operates correctly. If the analog PCB appears damaged, you can replace it by following this guide [https://pdfslide.net/documents/newprot-e500-service-manual.html|here]. == Failing Oxygen Calibration == ''The automatic oxygen sensor calibration fails.'' === Oxygen sensor restrictor occluded === The oxygen sensor restrictor can become dirty from dust and other small particles. Clean the oxygen sensor restrictor and reattempt calibration. If the calibration is still failing, you may need to replace the oxygen sensor restrictor. Follow this guide [https://pdfslide.net/documents/newprot-e500-service-manual.html|here]. === Defective oxygen sensor === The oxygen sensor itself could be damaged or defective, if this is the case then replace it by following this guide [https://pdfslide.net/documents/newprot-e500-service-manual.html|here]. == Showing Low Gas Supply == The device is displaying a low supply gas alarm. === Supply pressure is not within specified range (30-90 psig) === Ensure that both gas supplies have a pressure of at least 30 psig. == Not Powering On == Loss of battery power. === ***Defective battery hardware/ battery missing or discharged*** === Replace DC-DC power supply PCB; recharge or replace battery. Guide for replacing these components is detailed in the guide [https://pdfslide.net/documents/newprot-e500-service-manual.html|here]. == Not Flowing Enough Air/Low Air Flow == No flow or low flow from inspiratory port during inspiratory phase of a mandatory breath. === Inlet regulator failure or servo valve failure === Calibrate air and oxygen regulators; replace if calibration is not successful. Calibrate servo valves; replace if calibration is not successful.