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8-8
Routine Maintenance and Repair
590+ Series DC Digital Converter
Replacing the Fan (Frames 4 & 5)
WARNING!
Ensure that all wiring is electrically isolated and cannot be made “live”
unintentionally by other personnel.
Remove the terminal cover. Unscrew the three screws securing the baffle and remove.
Disconnect the fan supply cable. Remove the two M8 earth/ground screws on the back of the
drive (Frame 5). Remove the fan cover. Remove the fan assembly and screws as detailed above.
Reverse the procedure for refitting the fan assembly – refer to the refitting note in the diagram
above. The replacement fan assembly includes the fan, cover and capacitor, requiring just a
simple connection of the supply cable.
Heatsink Cooling Fan Connections
These fans are connected on the power board to the cooling fan supplies, CONN 2 or 3 as
described below:
x
380, 500, 725, 830A models have a single fan matched to the auxiliary supply and connected
to CONN 2.
x
1580A models have two fans matched to the auxiliary supply connected to CONN 2 & 3.