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• Stop the inverter and disconnect it from all power supplies before
maintenance.
• Lethal voltage still exists in the inverter. Please wait for at least 5 minutes
and then perform maintenance work.
• Only qualified electricians can maintain the fans.
Fans inside the inverter are used to cool the inverter during operation. If the fans do not
operate normally, the inverter may not be cooled down and inverter efficiency may
decrease. Therefore, it is necessary to clean dirty fans and replace the broken fans in a
timeiy manner.
The operation procedure is as follows:
Step 1 Stop the inverter (see 8.1 Disconnecting the Inverter).
Step 2 Loosen the screw on the sealing plate of the fan module.
Step 3 Press the tab of the latch hook, unplug the cable connection joint outwards, and loosen
the screw on the fan holder.
Step 4 Pull out the fan module, clean the fans with soft brush or vacuum cleaner, and replace
them when necessary.
9 Troubleshooting and Maintenance User Manual
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