Wondering why I have three of four Tigear2 right angle reducers driving conveyor that are much louder than one of them. One is about 72db the other three are 85 db. They are all new within 1 month old and are all driving the same type of conveyor.
How do I determine the amount of fumes I can collect with a vent. The fumes would be emitted in an open area and the vent with the exhaust fan would be 4' away?
