A method is provided for use in a computer system for performing an action on a storage volume being monitored by a program. The slide is connected to the landing flap and, in order to extend and retract the landing flap, guided along the flap carrier by means of at least one glide guide. The scissors lift is moveable between extended and retracted positions. In addition, the first panel and the second panel are telescopically adjustable relative to one another such that a length of the air-blocking panel assembly is selectively adjustable to fill at least a portion of an opening in the electronic equipment enclosure, thereby blocking air from flowing through the opening. A vent chamber between the primary and secondary seals allows the release of air which exits the primary seal, which prevents pressure from entering the lubrication area of the rotary union assembly. A laser-applied apparatus includes this laser apparatus, and a fluorescent microscope, a DNA sequencer, or an examination apparatus selected from a DNA chip examination apparatus, protein examination apparatus and a DNA probe array examination apparatus.