RE: [doc] radiator fans circuit
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RE: [doc] radiator fans circuit

If the switch is wired how I would expect then it will simply short out
the otterstat to bring on the fans. So it won't bypass the thermal
cutout, and that will still do it's job if necessary.

There's nothing of any significance which could cause your trip to keep
going other than the motors themselves. Although you might have some
insulation cut through somewhere which could be shorting out.

It's more likely that one of your motors is struggling, and causing
excessive load. Check them out when they spin, they should be hammering
round at a "finger-removing" speed. 

Disconnect each motor in turn, to see if one particular motor is causing
the problem. 

You should be able switch the fans on and leave them running continually
without any detrimental effects, if your trip a going then you have a

Rich H
DOC 365 VIN 1274

> -----Original Message-----
> From: doc-uk@xxxxxxxxxxxxxxx [mailto:doc-uk@xxxxxxxxxxxxxxx] On Behalf
> westleymills2003
> Sent: 06 March 2006 21:45
> To: doc-uk@xxxxxxxxxxxxxxx
> Subject: Re: [doc] radiator fans circuit
> The manual override switch you have discovered has been added in to
> > allow the driver to flick on the fans if the temperature starts to
> rise
> > but the fans have not come on. It's actually quite a handy idea.
> >
> the only thing is,if there is a fault wouldnt using this switch burn
> somthing out,also if there was a fault would it be with just the fans
> or is there somthing else in the fan circuit that could go faulty,if
> not i would have thought my fault if not the thermal cut out
> switch,would be the fans themselves being overloaded,in which case
> using this switch for a long period would burn them out on their
> comuntator,{or is it possible that a wire coming off the fan could
> melt right through the car}

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