An evaluation was performed by reviewing the complaint text, review of other customer complaints for similar issues, a review of labeling, and a review of historical data.A review of service tickets for aps serial number (b)(4) did not show any other tickets for this issue.Abbott field service performs preventive maintenance approximately every 6 months which includes use of a vacuum cleaner with a 0.3 micron hepa filter to remove dust.A review of customer complaints received for this issue did not identify any trends or increased complaint activity for the aps.(b)(4) (third party manufacturer) indicated that dust formation was considered during product design and different solutions have been released and applied to reduce it.Safety shields and covers are present over the entire system and are to remain in place unless specifically instructed to remove them to perform certain procedures.A retrofit kit for placement of (b)(4) (stainless steel) strips on the aps has been implemented at the site to reduce exposure to dust generated by the system.A study commissioned by (b)(4) measured concentrations of different components of the track dust and all were found to be below permitted limits as established by (b)(6).Based on the available information, a deficiency of the system was not identified.There is insufficient information to reasonably suggest a device malfunction occurred.
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