A “QUALITY NOTICE” is what Hollis (American Underwater Products (AUP)) calls it. But divers owning an affected Hollis DC7 and SE500 regulator should stop using it now and get it back to the dealer for corrective servicing. According to the quality notice, “a small production run of the DC7 regulator first stages were improperly assembled. ONLY DC7 regulator packages with a serial number H7000000 – H7000670 on the first stage are affected. Our dealers have reworked and corrected the issue with many of the units before they were sold.”
“Improperly assembled” in this case means they forgot to put in one important part. Before the Hollis website was changed we read that the regulators in the affected batch were assembled without a vital o-ring which hold the first stage filter in place. Without this o-ring that filter could shift and “allow debris past the inlet filter causing contamination and possible High Pressure Seat malfunction.” Our expert tells us that the most likely result of the “high pressure seat malfunction” is free flowing regulator, possibly during a dive.
Hollis has created a web application to help you determine if your regulator needs to be serviced. The application is at http://dc7.americanunderwaterproducts.com/. We strongly urge divers to pay attention to this and all recall notices. We are working on an article about scuba recalls in which we illustrate that many divers see the group qualifier “small” and do not think they are affected. Yet we have seen firsthand actual failures in many of the recalls we have reported. In two cases we found actual failures had already occurred in most of the affected products in the scope.
Below is the full text of the quality notice from the Hollis website: http://www.hollis.com/news/dc7-quality-notice
12/18/13 12:28 PM
It has come to our attention that a small production run of the DC7 regulator first stages were improperly assembled. ONLY DC7 regulator packages with a serial number H7000000 – H7000670 on the first stage are affected. Our dealers have reworked and corrected the issue with many of the units before they were sold.
You can check online to confirm if this rework has already been completed for your product here
If the service was completed, you need do nothing more. If it was not completed, the problem could allow debris past the inlet filter causing contamination and possible High Pressure Seat malfunction. Discontinue use of your DC7 and SE500 regulator until it receives corrective service. We ask that you contact your Hollis Dealer to arrange the free repair. We apologize for any inconvenience.
! WARNING: DISCONTINUE USE of the regulator first stage until it receives a retrofit/repair. ONLY Hollis Dealers and their trained service technicians can perform this service. Non-authorized persons who attempt the service procedure risk voiding the product’s warranty and rendering the product dangerously unsafe for SCUBA use.
Hollis Technical Support