-The blades of both fans should be very clean as dirty blades can cause vibrations.
-Make use of a thermal camera or a thermometer to determine the temperature of the bearing support. If the temperature is above 60° (depending on the machine), you may have a faulty bearing.
-The lubrication can...
For the first few meters install an anti-rain roof, choose the cheapest roof that you can install. Moreover, you may install temperature sensors in that area so that you may obtain the temperature differential obtained without and with a roof, with this information you may calculate the economic...