Alspa CE80–20 FIP Bus Interface Unit User's Manual

Installation14. REMOVING/REPLACING THE BUS INTERFACE UNIT FUSEIf all the Bus Interface Unit LEDs go off, it may be necessary to replace its fuse. The fuse can be removed withoutdisturbing any other parts of the station or wiring.To check the fuse, remove power from the station.Fully loosen the retaining screws in the Bus Interface Unit and carefully remove it from the Terminal Block. Donot tilt the module during removal.CautionAvoid touching the exposed wiring on the Terminal Block when removingthe Bus Interface Unit.CautionElectrostatic discharge can damage the module when it is not installed ona Terminal Block. Always observe normal ESD protection practices (forexample, use a grounding strap) when handling an un-installed module.The fuse location is shown below. Visually inspect the fuse to see whether it has blown.46464FuseTo remove the fuse from the holder, carefully pry it upward. Take care not to damage any components in themodule. Place the new fuse in position and press it into the holder.The fuse should be a 1A, 5x20 mm 250 VAC slow-blow type.Reinstall the Bus Interface Unit on the BIU Terminal Block.Page 2–14Alspa CE80–20 FIP Bus Interface Unit User’s ManualALS 52311 b–en