16 ACS550 Userís ManualInstallationInstalling the driveWARNING! Before installing the ACS550, ensure the input power supply to the driveis off.Prepare the mounting locationThe ACS550 should only be mounted where all of therequirements defined in section Preparing for installationon page 12 are met.1. Mark the position of the mounting holes with the help ofthe mounting template provided with the drive.2. Drill the holes.Note: Frame sizes R3 and R4 have four holes along the top. Use only two. Ifpossible, use the two outside holes (to allow room to remove the fan formaintenance).Note: ACS400 drives can be replaced using the original mounting holes. For R1 andR2 frame sizes, the mounting holes are identical. For R3 and R4 frame sizes, theinside mounting holes on the top of ACS550 drives match ACS400 mounts.Remove the front coverIP21 / UL type 11. Remove the control panel, if attached.2. Loosen the captive screw at the top.3. Pull near the top to remove the cover.X000213IP200012