Sechrist technician was dispatched onsite and evaluated decompression and emergency vent on the chamber.Technician found that exhaust screen was dirty, removed screen and chamber decompresses normally.Technician instructed customer to remove, inspect screen and clean out at least once month.A device history review was performed (dhr) chamber 3600e/er serial number (b)(4) was manufactured on 03/12/2006.There is no indication that there were any relevant discrepancies during manufacturing.A review of the device history record (dhr) found no non-conformance that could cause or contribute to the reported issue.
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