|
On-site investigation was performed by the field service engineer.The claimed issue was reproduced during troubleshooting.According to information received in the service report, replacement of the pressure transducer printed circuit board (pcb) resolved the issue.The ventilator passed all functional and safety tests and was cleared for clinical use.Pressure transducer pcb measures the pressure, conveyed via the pressure tube connected to this block by its differential pressure transducer.With differential reference to the ambient pressure, the output signal is proportional to the measured pressure thus giving a linear measurement in the range -40 cmh2o to +160 cmh2o.The defective part was not returned for investigation, despite request.The device's logs were not provided for further analysis.The cause of the claimed issue in this customer product complaint has been determined.The issue was related to pressure transducer pcb.
|