[RE-wrenches] Intermittent charge 4024

[Drake]

I know an electronics technician who has repaired 
a couple of Trace inverters for us for a very 
reasonable fee. Contact me off the list for his contact info.

At 02:27 PM 11/3/2016, you wrote:


>You can replace the internal SW fans (if the fans themselves are the problem.)
>
>BUT the replacement fans must draw approximately the same current as the
>original fans because they are powered by a current source rather than voltage
>source.  i.e. If you  use a fan that draws less 
>than the fan current, the voltage
>could rise too high.   Some 12V fans don't have a problem running at say,
>20+ volts DC BTW so might not be that big of a deal.
>
>boB
>
>
>On 11/3/2016 7:57 AM, Jay wrote:
>>Hi Mac
>>
>>No don't recommend replacing internal fans
>>
>>But I have installed external 120v muffin fans on the ends.
>>Seal up the vents around the ends so it pulls air through.
>>Hook the fans to the genny input.
>>Quick and works well
>>
>>Jay
>>
>>On Nov 3, 2016, at 7:09 AM, Mac Lewis 
>><<mailto:maclewis1 at gmail.com>maclewis1 at gmail.com> wrote:
>>
>>>Hello Wrenches,
>>>
>>>I recently assessed a 22 year old Trace 
>>>4024.  During bulk charge mode, I noticed that 
>>>the charge would go from about 18A down to 
>>>5-6A every 15-20 seconds, and then repeat the 
>>>cycle.  I observed this for about 5 minutes 
>>>relatively consistently  I also noticed the 
>>>body of the 4024 was very hot, and I couldn't 
>>>feel a fan moving air through it.
>>>
>>>I put a fan on it and blew air over the body 
>>>of the inverter, trying to direct it through 
>>>the machine.  While I did that, I never 
>>>observed it drop out again over about 5 
>>>minutes, so I'm assuming that there is an 
>>>internal cooling fan that has gone out.
>>>
>>>It's been quite a while since I opened one of 
>>>these up.  Does anyone know what's involved in 
>>>replacing a cooling fan on one of these?  Is 
>>>it worth it on a 22 year old inverter?
>>>
>>>Thanks in advance
>>>
>>>--
>>>
>>>
>>>
>>>Mac Lewis
>>>
>>>"Yo solo sé que no sé nada." -Sócrates
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