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Maintenance and Inspection

Fan AssemblyReplacement

Troubleshooting and Maintenance

The SJ300 Series inverters have field-replaceable fan units. They include an internal connector for easy removal and replacement. You will need to remove the front panel covers to remove the fan assembly. First, be sure to remove power from the unit and wait at least 5 minutes before accessing the wiring area.

1. Remove the digital operator from the front

Digital operator keypad removal

panel. Then remove the bottom front panel

to expose the wiring area as shown. This

 

will also expose the retention screws for the

 

top front panel. Remove these screws,

Upper panel

which will allow the front panel to hinge

retention screws

upward and unfasten from the unit.

 

2.After removing all front panel pieces, locate the thumb latches in the top of the inverter

housing. Grasp and push the releases inward as shown to the right, and gently pull upward to remove the fan assembly.

CAUTION: Remove the fan assembly carefully, since it is attached to the unit via connecting wires.

3.After unfastening the fan assembly, turn it over to expose the connecting wires. Then locate the PWB connector as shown. Disconnect the wiring.

4.Connect the new fan assembly wiring. The polarized plug will ensure a proper connection.

5.Snap the replacement fan into place.

6.Replace all front panel pieces and retention screws.

PWB connector for fan assembly wiring