Kongsberg cNODE Maxi, Instruction Manual

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322217/G
Safety features
The cNODE has a safety valve for releasing pressure that might build up inside the
transponder.
Pressure relief valve
The transponder is fitted with a pressure relief valve at the bottom of the unit. The
relief valve prevents overpressure. This valve will release the pressure if it exceeds
approximately 1.0 bar.
The relief valve will normally pop out gently releasing the pressure. The valve is reset
by firmly pushing the valve back in and is levelled with the surrounding surface.
Resetting the valve can in certain cases be obstructed due to production of acids and salts
leaking from a damaged battery. In such cases the battery and circuits may have been
damaged. Please contact Kongsberg Maritime for assistance.
Vent screw
The vent screw is normally not operated and is for safety purposes only. The operator
can release any excess pressure that may have built up inside the transponder. Make sure
to dry off any water around the screw before opening it. The screw is normally opened
and closed by hand.
Recovering a failing transponder
Always read the emergency procedures before handling lithium batteries.
Prerequisites
Handle a failing transponder as a possible water ingression.
Procedure
1 Evacuate all unnecessary people.
2 Recover the transponder with great caution using a crane.
No people should be near the transponder when it is lifted up on deck.
3 Place the transponder in a safe place out on deck, shielded from people and vital
equipment.
4 Fasten the transponder in a crane, ready to lower it into the sea again.
5 Control the transponder for minimum two hours.
6 Check for damages that could involve a water leakage and check the housing
temperature for a possible temperature increase in the lithium battery.
Kongsberg cNODE Instruction Manual