Before undertaking any navigation, check that the batteries are in good condition and that they supply the correct nominal current.

During navigation, the service battery and engine batteries must always be kept connected. The parallel switch on the two banks must normally be disconnected and then turned OFF.

If there is a malfunction of the charging alternator during navigation, turn the parallel switch between the battery banks to ON and leave it on for the shortest possible time.

Do not embark on navigation unless the engine battery switch and that of the service battery switch are both engaged and do not disengage during navigation.

Risk of electric shock from leakage currents.
Do not swim in harbour or marine waters.

If there is a significant and persistent drop in the voltage of one or both battery banks during navigation, check the charging efficiency of the relevant alternator.

The engine control systems: accelerator and gears engagement remote controls are electronic. Their reliability is very high, but in case of a sudden black-out, it is necessary to immediately switch OFF the engine which is not controllable any more by means of the relevant buttons located in the helm position.

Disconnect the dock power supply connections when the system is not in use.

Use electric devices with double isolation or grounding.

When the engines are switched ON, the engine and service charger is automatically switched OFF to prevent them from working in parallel with the engine charging alternator.

Do not allow the end of the shore power cord to float in the water. This may create an electric field that can cause injury or death to swimmers in the vicinity.

Do not modify the shore power cable connectors; use only compatible connectors.

Refrain from performing any modification or intervention on the system and on the panel and take advantage of experienced Companies and skilled staff. Avoid any derivations on the power lines and the addition of utilities not provided on the panel itself. If you need to assign services to the switches available, make sure that their characteristics are suitable with the device installed.

The parallel connection system between the batteries sets, driven by a button located in the main helm position, is used to increase the boosting power at engines start, under particularly climate conditions or charge condition, and for a short period of time.
This system must be activated only if the rocker switches connecting the engine and service battery banks are positioned to ON.
Do not use in case of faults on the batteries recharging circuits, for instance on the engines alternators. We advise to use this system only in emergency cases.

NEVER:

• Work on the electric system while under voltage.
• Modify the electric systems of the system or relevant drawings: the installation, the modifications and the maintenance must be carried out only by a skilled marine electrician.
• Alter or modify the intensity of rated current of protections against overcurrent.
• Install or replace electric equipment or devices with components exceeding the rated current intensity of the circuit.
• Leave the yacht unattended with the electrical system powered, except for the circuits of the bilge automatic suction pumps, of the fire-fighting protection and of the alarms (directed to battery).

Electrocution hazard! Turn the power OFF before removing the cover and servicing any electrical equipment internal component.

All electrical systems (included those at low voltage) if wrongly handled or subjected to overloads, can originate short-circuits and dangerous overheating with potential fire hazards!

Use the switch for the engines battery set parallel connection, only if strictly necessary for additional supply of the batteries at engine start. If your are compelled to use the “battery parallel connection”, turn OFF all electric devices so as not to jeopardize their correct operation.
Disconnect them as soon as possible.

If your are compelled to use the “battery parallel connection”, turn OFF all electronic devices, so as not to jeopardize their correct operation.
In emergency conditions, use the battery parallel set for the shortest reasonable time.

We recommend, in order to operate in complete safety, to carefully read the safety rules relevant to the maintenance and contained in this manual.

Before working on the charger, disconnect the shore power supply.

Fire danger: it is normal that the transformer generates and gives out a lot of heat. Please be careful not to surround the transformer with any storage material and keep it free from obstructions to ensure that the transformer has adequate ventilation at all times. Do not stow flammable material close to the transformer.

RIVA suggest to examine very carefully the whole documentation delivered by the manufacturers of the various components; and for any problem relevant to maintenance, to contact RIVA After Sales & Service Department directly.

The system is similar to a domestic system in terms of features and risks and, if “wrongly” used, mishandled or serviced, it statistically represents one of the most frequent reasons for fire on board.

Have the internal status of the charger checked by specialised personnel at least once. Faults like loose connections, burnt wires, etc.., with following risk of fire spreading, must be repaired immediately.

Do not disconnect the battery master buttons with engines running or you may damage the engine alternators.

For the correct procedures of fuses replacement refer to the on-board electric manual delivered separately.

Systems and electric circuits
For the diagrams and the features of the electric system parts, please refer to the specific manual.