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Hello.I have an e65dre diesel generator which is about 5yrs old,no more than about 50 hrs running time.Other reviews suggest unit should be started at least once a month which I haven't done.This unit would have to be jumped as battery would not stayed charged even after running.Bought a new battery and still same situation.Yesterday after hurricane was over and power was out I jumped the unit,started right away and after about seven hours the areas that had power to the suddenly shut down however unit continued to run smoothly.I had two neighbours that are both electricians look at it and the unit is longer providing voltage ,also mentioned this is probably the same for the battery no voltage going to it to keep it charged if that sounds right.I to misplace the book for the control panel.Need a little advice please.I did read another review that stated if something is not tickled once a month it looses its charge,however yesterday it started beautifully and ran for 7 hrs no problem.Thanks in advance for any help.correction to my last e-mail.That should have read 7 hrs not 7 yrs.

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Eagle is not very forthcoming with publishing documentation on the net, so I am shooting from the hip here from past experience.

Your generator does not need to be "flashed" as it should be a self-exciting unit. If there was power coming out, and it died all of a sudden (was there a sudden surge just before this happened?), one or more of the field diodes may be toasted.

Popoff the end cover of the alternator / generator head itself to get access. Write down part numbers that you find of both the diodes as well as the capacitor. Also make note of wiring.

You will need to identify the field winding. This winding will have the diodes going to it. At the connection to the diodes, disconnect and measure for continuity of the field using a multimeter. You should have some resistance. Then check each end of the field winding in relation to the rotor core. There should be no resistance at all. To have continuity here means that your rotor is grounded, and you have found the problem (have rotor rewound to repair). Find your stator connections, these will be the output of the alternator, and will be connected to circuit breakers and such. Here, there will be 2 connections (for 240vac generator). Measure the 2 connections for continuity, there should be some resistance. Then measure each end to the frame of the alternator. There should be no resistance at all, or it would indicate that the stator is grounded, and is another problem.

As far as immediate problem, I suspect that your rotor and stator windings are fine, but your capacitor voltage regulator has faulted on you. Since these items are already on the edge as far as being appropriate for the application, find diodes / diode block with a higher current rating and working voltage. Regarding the capacitor, keep the same capacitance rating (likely 10-12uF), but increase the working voltage.

Given that the capacitor and diodes spin with the rotor, look for mechanical stress on the connections as well. Repair as necessary, you want the wiring to be as close to the center of the rotor as possible to minimize G-Forces when it is rotated. Secure everything that you can, keeping in mind elevated temperatures.

Posted on Sep 05, 2010


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