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The Tron 40VDR AIS is under the regulation of the IMO MSC.1/Circ 1040,
which requires annual testing performed by authorized radio-surveyor or
authorized personnel trained and certified by Jotron.
Additional requirements for annual testing of float-free recoding medium
capsules are found in IMO MSC.1/Cir. 1222.
6.4
Every 2
nd
year
•
Replace the HRU including the plastic bolt. See chapter 6.7 for
description
•
Mark a new expiry date on the HRU label
6.5
Every 4 or 5 years
Perform complete SBM service or replace the complete EPIRB. See chapter
6.8.
The interval is 4- or 5-years dependent on the flag-state administration.
6.6
Every 10 years
Due to the harsh environment the EPIRB normally is situated in, Jotron
strongly recommends replacing the EPIRB, the VDR storage, the float-free
bracket, and the docking station after 10 years.
6.7
Hydrostatic release unit (HRU) replacement
The hydrostatic release unit shall be replaced within the end of the year
and month indicated on the side of the HRU. This is shown in the following
figures.
Expiry month location
Expiry year location
Follow these steps to replace the HRU:
1.
Release the front cover and remove the EPIRB from the bracket.
