Re: [Amel Yacht Owners] DC Panel dial and green light in star
Danny and Yvonne SIMMS
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Hi, I have bee waiting for the heavyweights to answer this but they are silent so far. For the alternator to start up it has to be excited by a 12 volt feed from the starting battery. this should occur when the key/switch is turned on before the starter is engaged. The blowers and a volt meter or ammeter (if fitted) should activate at the same time. The problem with the alternator not starting to charge would indicate the connection from the battery, through the key to the alternator is broken.(ie not functioning) This could be as simple as a bad contact in the key. Given its years of service this is quite possible;
The 24 volt alternator has to be excited by a 24 volt current from the house bank. This is achieved by a 12 volt current from the starting battery through the key activating a solenoid switch closing a circuit from the house bank to the 24 volt alternator.
SM 299 Ocean Pearl