Opening The Inverter - SMA SUNNY ISLAND 4.4M Operating Manual

14 Cleaning and Maintenance
Damage to the inverter due to electrostatic discharge
Touching electronic components can cause damage to or destroy the inverter through electrostatic discharge.
• Ground yourself before touching any component.
Requirements on the micro SD card:
☐ A micro SD card must be used. Other memory cards (e.g. MMC cards) may not be used.
☐ Data storage in the FAT16/32 file format must be possible.
☐ Minimum storage capacity: 1 GB
☐ Maximum storage capacity: 64 GB
☐ Quality: industry standard
Requirements:
☐ The micro SD card must be available.
☐ The inverter must be disconnected from all voltage sources (see Section 13, page 132).
Procedure:
1. Disconnect the inverter from all voltage sources (see Section 13, page 132).
2. Open the inverter (see Section 14.11, page 142).
3. Remove the defective SD memory card.
4. Insert the micro SD card into the slot up to the stop. Do not jam the micro SD card when doing so.
5. Ensure that the micro SD card is correctly plugged in.
6. Close the inverter (see Section 14.11, page 142).
7. Recommission the inverter (see Section 14.12, page 143).

14.11 Opening the Inverter

If you have to open the inverter enclosure lid for repairs or replacement, proceed as described in the following.
Danger to life from electric shock due to high voltages
High voltages are present inside the inverter. When the enclosure lid is removed, live components can be touched
that can result in death or serious injury due to electric shock.
• Disconnect the inverter from all voltage sources (see Section 13, page 132).
• After switching off the inverter, wait at least 15 minutes before opening the inverter to allow the capacitors to
discharge completely.
142 SI44M-80H-12-BE-en-10
SMA Solar Technology AG
Operating Manual