The dispatched fse has inspected the logs and was able to identify several entries indicating a shut down of the ventilator unit due to motor overcurrent.The entire motor assembly and some other parts have been replaced.The device could be returned to use after proper function has been verified by the defined tests.Log file evaluation made by the manufacturer confirms the expertise that was obtained on-site.The device was in operation for 15 years, it is plausible that high friction forces occurred on the motor, the spindle or the piston due to wear and tear after such long time of use.The repair exchange of the relevant parts was the appropriate measure to rectify the problem.The motor is designed for a lifetime of ten years at standard operating condition - a case where the motor fails after 150% is rated as not unexpected and thus, acceptable.
|