Maintenance and Troubleshooting

Back view

Top mounting hook goes over wall-mounted bracket

Lower flange goes behind wiring/disconnect box

Wiring/ disconnect box permanently mounted

to bracket

Figure 6-4Inverter and Wiring/Disconnect Box Sections

To replace the inverter on the wiring box:

1.If it has not already been removed, remove the display front panel cover on the inverter.

2.Mount the inverter on the upper mounting bracket above the wiring/disconnect box, ensuring that the inverter’s lower flange goes behind the wiring/disconnect box. See Figure 6-4.

3.Pull the connecting DC and AC wires back out of the wiring box and into the inverter.

4.Replace the nuts that connect the inverter and the wiring/disconnect box. Tighten each nut alternately to clamp the gasket between the inverter and wiring/disconnect box. Secure all nuts tightly.

5.Remove the wire nut from the PV NEGATIVE (–) wire and reconnect it to the terminal block inside the inverter.

6.Uncap the remaining DC and AC wires and reconnect them to the terminal blocks inside the inverter.

7.Ensure all connections are correctly wired and properly torqued to a maximum 16 in-lb (1.8 Nm).

8.Follow the startup procedure as described on page 4–1.

6–8

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