Reference e-complaint (b)(4).Investigation: x-review dhr, x-inspect returned samples.Analysis and findings: the unit, serial# (b)(4), was built in june of 2016 and shipped in september of 2017.A review of the 2 years complaint history for cryo plus w/20 lb cyl yok, p/n-2400 reveals one similar issue.The dhr-2400-va0505 was reviewed and found no anomalies during production.Repair order (b)(4) note: won't defrost.Delivery tube clogged.Cleaned delivery tube and line.Tested to qa spec.The complaint was confirmed.As per repair tech, improper cleaning after each use may results in clogged inside, due to this clogged the delivery line was not working properly.It should be noted that all cryo plus w/20 lb cyl yok units are tested 100% prior to release.Therefore, while no definitive root cause could be reliably determined, this issue may be attributed to customer mishandling.Coopersurgical will continue to monitor this complaint condition for trends.
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