The coolant sump photo at left is often an excellent instance of exactly where the machining center was switched from machining steel to aluminum. As you could see, if you location your mouse more than the photo (or click if you are on a mobile device), the conveyor created for catching steel chips is now permitting aluminum shavings to drop via and contaminates the coolant sump causing challenges with the pump clogging and lowered coolant life amongst other concerns. Do you have a filter inline that cleans fine particles out of your coolant?