User Manual
9 Troubleshooting and Maintenance
57
9.2.2 Maintenance Instruction
Fan Maintenance
Fans inside the inverter are used to cool the inverter during operation. If the fans do
not operate normally, inverter may not be cooled down and efficiency may decrease.
It is therefore 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 ten
minutes and then perform maintenance work.
Only qualified electricians can maintain the fans.
Step 1
Disconnect the AC circuit breaker.
Step 2
Turn off the upstream DC circuit break. Rotate DC switch to the “OFF” position.
Step 3
Wait for at least ten minutes.
Step 4
Disconnect all electrical connection in the reverse procedures in the “6 Electrical
Connection”.
Step 5
Lift up the inverter.
Step 6
Place the inverter on the platform.
Step 7
Unscrew the bolts as shown in the right
picture.
Step 8
Disassemble the metal plate slightly.
