Device investigation narrative - one refurbished truclear mdu, part number 7209807f was received on june 03, 2016 and confirmed to be serial number (b)(4).A visual inspection was performed on the product and no damage was observed.Complaint of window lock malfunction could not be confirmed.Product passed functional testing including high speed testing (100-2500 rpms) with blade installed.Unit passed functional tests on a known good control unit with footswitch.Window lock function performed as expected with no trouble and blade returned to the set position every time.No problem found.(b)(4).
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