[DML] Re: Cooling Fans

["David Teitelbaum" <jtrealty@xxxxxxxxxxxxx>]

Check all of the connectors in the fan circuit. You will find some
loose/overheated ones causing a voltage drop. As the voltage gets
lower the amperage increases so the motors can still pull the same
amount of power. That is what causes the wires to overheat. As the
wires get hotter they can carry less current so they get hotter and
hotter, a vicous cycle. Check that you have the uprated circuit
breaker for the cooling fans AND the heater fan. Check the bypass
jumper if you have it for overheating. Finally, you could also have a
bad motor drawing to much current. Measure the voltage and current at
the motor. The wrong otterstadt switch can also cause the fans to run
too long and not cycle off enough. Same for the A/C. It is not
supposed to run the fans continusly, again the A/C must cycle so the
cooling fans can cycle off. The time spent in the off part of the
cycle allows things to cool a little. The fan circuit was not made to
run continuosly for long periods of time.
David Teitelbaum
vin 10757



--- In dmcnews@xxxxxxxxxxxxxxx, "edward j  cohen" <rdcejc@...> wrote:
>
> David,
> Question for you.  My cooling fans are drawing a lot of amps.  So
much so 
> that the wires get hot and the system shuts down.  Any ideas as to
what's 
> causing this.
> Ed
> 6944
>









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