| 摘要 |
PURPOSE:To provide a ventilating fan for duct with good working properties by a method wherein the fan can be assembled and disassembled from the inside of a room for inspection, repair or the like. CONSTITUTION:Nuts 17 are screwed off from through bolts 8, which are inserted through the through holes of a casing 20 in an outer case 13, by the operation from the inside of a room under the condition that the screws 14a of flanges 14 have been removed together with a decorative grille in advance. Consequently, the release from the fixation of the outer case 13 to a mounting member 5 is made possible. The through bolts 8 are drawn out through the hole parts 16a of supporting pieces 6 with holes 16 and through holes 15 by lowering a main body 12, resulting in taking the main body 12 out of an opening 12a to the indoor side. |
