Date:         Thu, 14 Jul 2005 13:19:16 -0400
Reply-To:     Kim Brennan <kimbrennan@MAC.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Kim Brennan <kimbrennan@MAC.COM>
Subject:      Re: engine dieing while AC on high--solved
In-Reply-To:  <28555-42D69B69-2198@storefull-3172.bay.webtv.net>
Content-Type: text/plain; charset=US-ASCII; format=flowed

You misunderstood my statement.
Not the largest draw on the SYSTEM, the largest current draw by the
FAN. At lower speeds, the fan puts some of the current draw into the
resistor (which gets hot).

But I was also referring to the AC fans in the cabin, not the radiator
one.

Yes, when the fans are on high, they bypass the resistors.


On Jul 14, 2005, at 1:05 PM, Robert Cardo wrote:

> <<I seem to remember reading sometime ago, that the heaviest current
> drain setting on the fan was the medium (not high or low) settings.
> Speed 2 on a 4 speed AC fan (in other words, strangely, the most likely
> to be used setting.)>>
>
>
>
> The biggest draw on the electrical system is when the AC motor is on
> the
> high speed fan relay which is a full direct drive power from the Vans
> battery / alternator.
>
> (This is why the vehcle has a high speed   AC motor relay )
>
> On the lower speeds the power is on the lower speed regulators which
> don't tap off as much power from the charging system.