mcmurdo Fastfind, Руководство по обслуживанию

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Commercial in confidence 85-909
PLB service manual Issue 4 Page 13
Normal mode
It is possible to message read in live mode provided the PLB is in a screened enclosure. In
this case the Reader reports NORMAL OK and the first 3 bytes of the full hex message are
FF FE 2F… instead of the usual FF FE D0… for self test mode.
GPS fix information
It is important to understand that the Hex ID reported by the Reader may change (depending
on the reader) when the PLB acquires a GPS position. The first ID reported corresponds with
the ID printed on the PLB label (unless there is a fault or the PLB is wrongly identified);
however, this ID may then change and be reported differently after a GPS fix. These
examples should make this clear:
First ID reported 2DD4C026BF81FE0
Lat * * * * * *
Long * * * * * *
Subsequent ID reported 2DD4C0269966022
Lat 50N49.73
Long 1W3.4
3.4. Internal inspection
No internal inspection is permitted.
3.5. Disassembly
No disassembly of the PLB is permitted.
3.6. Leak testing
Leak testing is not required for routine servicing, but may be performed if the PLB sealing is
suspect.
Gross leak test
Use hot water at +60 + 5 ºC. Cooler water will not raise the internal
pressure enough, hotter water will damage the PLB.
The battery pack must be fitted for this test.
1. Remove the flip-top lid to avoid trapping air
2. Immerse the PLB in the hot water until it is just submerged
3. Dislodge ALL trapped air from the gasket and the tamper cover
4. For the next 5 minutes, rotate the PLB and check for any escaping bubbles around
the seal and switches
(NOTE: There will probably be air trapped under the battery pack)
5. If there is any sign of water ingress, remove PLB quickly
6. Remove PLB from water, wipe thoroughly dry.
7. Replace the flip-top lid
Any escape of bubbles indicates a fault. Return the PLB to McMurdo for servicing.
3.7. Battery replacement
If the PLB has been activated, it is recommended that the battery is replaced regardless of
the duration of activation. The PLB battery has a shelf life of 5 years from date of
manufacture. The expiry date is shown on the battery label.
HOT