Case i.e. smoke exhaust case, for motor fan unit, has side wall equipped with maintenance trap for permitting access to motor fan unit, and end walls arranged in ends for permitting assembling and withdrawal of motor fan unit, respectively

摘要

The case (1) has a cylindrical side wall (3) equipped with a maintenance trap (9) for permitting access to a motor fan unit (2) by an operator. Removable end walls (6, 7) are arranged in opened ends (4, 5) for permitting assembling and withdrawal of the motor fan unit, respectively. Rails (31) are placed in an enclosure defined by the side wall, and extend from an opening of the end (4) towards the interior of the case. Two series of holes (10) are formed in a symmetrical manner with respect to a vertical and longitudinal median plane of the case.