L. Barta wrote:

>'The new Komatsu water truck at Wyodak has a serious problem.
>'Drivers have left the water pump switch on with no spray heads
>'turned on. This severly overheats the hydraulic system resulting
>'in pump and valve failures.
>'I've been asked to come up with a fix for it!
>'This device was designed to allow the water pump to only run
>'when at least one of the spray heads is turned on. There is
>'only one exception to this rule. At times, there may be the
>'need to run the pump for fire control. In this case an
>'input from a switch on the console will act as a spray head switch
>'allowing the pump to run.
>'We must provide two outputs, one to turn the pump on (RA0)and another
>'to turn the pump off (RA1 High for 3 seconds)
>  
>

I would tell the 'powers that be' to not pay Komatsu until they fix 
their faulty design!

And if it's new, it's still under warranty, right?

Aaron


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