User's Manual
24
11 MAINTENANCE
11.1 Monthly self-test & inspection
As an important item of safety equipment, your G4 should be checked regularly. The
G4 has a built-in test capability that can be used as a confidence check. This self-test
confirms that the battery is healthy, that the GPS receiver and both of the distress
transmitters are functional and that the strobe light is operational. The self-test should
be performed
monthly
. It should be performed during the first 5 minutes of the hour, to
minimise disturbance on the emergency channel.
If your G4 is in an enclosure it can be tested through the test window without having to
remove the G4 from the housing. If you have a bracket mounted G4 it will have to be
removed from the bracket as described in section 6.3. The procedure for self-testing is
as follows:
• On rear of G4 press and
hold
the READY button.
• The red lamp will come on for 4 seconds to confirm test in progress.
• When the red lamp goes out, the strobe lamp
must flash
3 times (at
least).
• If the strobe does not flash, or the red lamp illuminate, repeat the test
then see section 11.4.
During these monthly checks you should take the opportunity to visually inspect the G4
and its mountings for deterioration or damage.
On the G4 itself check the following:
• Inspect the G4 for any obvious damage.
• Check there is no sign of water inside the unit.
• Check that the lanyard is not tied to the vessel structure.
• Check the battery is within its expiry date.
If you have a wall bracket:
• Confirm the bracket top clip springs up when squeezed.
• Check the G4 is correctly fitted and secure in its bracket.
If you have an enclosure:
Check the HRU is within its expiry date (category 1 only).
Confirm the cover can be manually removed with ease.
Ensure the G4 base is correctly fitted into the D-shaped prongs.
If the G4 or its mounting needs cleaning then this should be done using warm soapy
water and a damp (not wet) cloth. Do not use strong detergents or solvents.
Do not paint the G4 or its mounting
Do not clean with detergents or solvents
During vessel cleansing or painting remove the G4 and its mounting.