Sungrow SG33CX User Manual page 89

User Manual
efficiency may decrease. Therefore, it is necessary to clean the dirty fans and
replace the broken fans in time.
 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.
The operation procedure is as follows:
Stop the inverter (see 8.1 Disconnecting the Inverter).
Step 1
Loosen the screw on the sealing plate of the fan module.
Step 2
Press the hump of the latch hook, unplug the cable connection joint
Step 3
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
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