Evans Dash Air Nightmare
I'm a newbie to the RV world and would love some help dealing with a problem with the Evans Tempcon dash AC. The coach is a 2001 Monaco Knight on a Roadmaster chassis. I bought this RV knowing the d...
Forum Discussion
oldave wrote:
Not sure what you mean by vacuum motor but there is no motor in the
black box . You are exactly correct , 12v operates an air valve ,
air is the passed thru the venturi to create vacuum as needed .
When done right the venturi is a terrific little devise but I suppose
the 12v pumps became so cheap and good where the black box probably
got more expensive so the bean counters won again .
I have worked on Motorhomes for 40 years and have NEVER seen that Monaco pump system. But, when the 12 volt pumps came out 25 years ago for RV's, they were in the $225 to $275 range. Now they can be found for about $125. I am calling the vanes that generate the vacumm a motor. Doug
