Unit was received for evaluation.Refer to evaluation # mt00108 - customer stated "hole" in collection bag prevented priming.Hole is bag vent and is intended to be there.Unit primed successfully on multiple attempts.Unit function properly under all three power levels.Disassembled.No internal visible defects found.The dhr for lot 06513-02 was reviewed.The units met manufacturing specifications when released and there were no issues related to the complaint.There were (b)(4) units released from lot 06513-02.A review of lot history showed that there were (b)(4) units that failed for functionality.This lot has a failure rate of (b)(4).
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