Installation and operating instructions V00 75
12 Maintenance
Normally, the inverter needs no maintenance or calibration. Regularly inspect the
inverter and the cables for visible damage. Disconnect the inverter from all power
sources before cleaning. Clean the enclosure and display with a soft cloth.
12.1 Replace the fuse
Danger to life due to high voltage!
The capacitors in the inverter take 5 minutes to discharge.
• Wait 5 minutes before opening the cover.
Procedure
：
1. Disconnect the AC circuit breaker and secure against reconnection.
2. Disconnect the DC-switch and secure against reconnection.
3. Remove all DC connectors.
4. Wait 5 minutes.
5. Loosen the screws of the lower cover using a screwdriver (T25) and remove
the lower cover.
6. Check using multimeter to identify the blown fuse and check the corresponding
PV strings.
7. Remove the blown fuse and insert the new fuse into the fuse holder.
8. Reassemble the lower cover and restart the inverter.
Summary of Contents for Zeverlution Pro 33K.
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