Mechanical installation 61 Cabinet roofThe cabinet roof is not designed as a mounting base for foreign devices, cable ducts andso on. Therefore, it is not permitted to install any foreign device on the roof. Installing fan unitsAC fans are already mounted when delivered from works.EC fans need to be installed with fan box in the field.For information on the number of fan units to be installed, see ACS580MV Base frame &TEU layout design.Installation1. Lift the fan unit onto the cabinet roof by means of a forklift or a crane (if using a crane,empty the lifting eyes in the fan roof).• ~70 kg for EC500 fan units• ~90 kg for EC560 fan units2. Use the supplied screws to fasten the fan units to the cabinet roof.For information on the electrical installation, see Control and power supply cables for fanunits.NOTICEThe mounting position can be identified by the cutouts in the drive roof.