| 摘要 |
PURPOSE:To make it easy to replace parts and to prevent the intrusion of dust by enabling a cooling blower to be connected to the breathing filter of the cover of a shroud equipped with a parts replaceing window, and by replacing parts while internal pressure is held higher than the atmospheric pressure by supplying air through the filter. CONSTITUTION:Cover 1 of shroud for sealing a disk is provided with parts replacing windoe 9 and air duct 8 connected to general cooling blower 12 is connected to breathing filter part 6. When parts are replaced, clean air is blown ito cover 1 to hols the internal pressure in cover 1 higher the atmospheric pressure, thereby blowing air out of window 9. Consequently, the intrusion of dust during parts replacement can be prevented, so that the replacement of parts can be facilitated. |
