LL Hydrostatic Release Unit for EPIRB

LL Hydrostatic Release Unit (HRU) for EPIRB is activated in a depth of between 1.5 and 4m deep by hydrostatic pressure, releasing the EPIRB from the sinking vessel.  It is made of glass reinforced nylon for extra protection against corrosion, designed & tested according to LSA requirements / MSC 81(70), as amended.

Having easy & simple installation, LL HRU for EPIRB requires no maintenance, while it needs replacement after 2 years from installation, or 4 years after manufacture, whichever occurs first.  The bolt (rod) must be replaced together with the HRU. LL HRU for EPIRB complies with most EPIRBs & is installed according to the EPIRB Manufacturer’s instructions.

To be used only with LL HRU bolt & nut for EPIRB (74580-LALIZAS Mounting Kit for Hydrostatic Release Unit for EPIRB) – available separately – .

Installation Instructions:

1.       Remove the old HRU and the bolt & nut from the EPIRB and dispose of them.

2.       Mark the expiry date on the new HRU.

3.       Place the new HRU and the new bolt & nut and fasten.

Marking the Expiry Date:

The expiry date must be marked on the label of the HRU for EPIRB.

In order to mark the expiry date (month and year) of the unit, use a knife and scrape off the numbers indicating the month and the year, which is two years after installation.

*Due to the existence of many different manufacturers and models of EPIRBs, it is recommended that authorised personnel check and confirm compatibility and proper operation.