Lets head out into the machinery house and have a look around.
The first thing you notice is how clean and orderly
Draglines work in a dirty and very dusty environment,
unfortunately dust and dirt can damage electronics and electrical components.
To keep this from happening, air is drawn in from
behind the machine and filtered, This air is then forced into the
machinery house under pressure. By having the air inside the
machinery house at a little higher pressure than the outside
environment, any opening in the housing would have air blowing out of
it, so that the dust would never have a chance to enter.