Been trying to find some information on repairing and servicing evaporting coolers. When I bought our home the people whom had it before me didnt really take good care of the cooling system. I have replaced the pump, pads, float, and water tubing so far. I have two questions or if you can point me in the right direction as to where I can obtain some handbook on EC. The water in the water resevore is a rustic color right know, would like to know what causes that, and also when I replaced the float, even with the float at the closed position it still continues to let water come through. This was the reason I changed it in the first place. Is the float suppose to let a certain amount of water through?