Cleaning The Fans - SMA SUNNY ISLAND 3.0M Operating Manual

SMA Solar Technology AG
• Select the parameter Health (SOH) and compare with the expected usable battery capacity.
If the current state of the battery does not correspond to the expected state, carry out the following steps:
• Ensure that the requirements for the ambient temperature of the battery are met (see documentation of the
battery manufacturer).
• Check and optimize the battery management settings.
• If you cannot determine the cause for the deviation, contact the Service (see Section 16 "Contact", page 161)
.
2. Stop the system and switch off the Sunny Island (see Section 4 "Starting and Stopping the System", page 20).
3. Open the load-break switch of the BatFuse and secure against reconnection.
4. Check and maintain the battery (see documentation of the battery manufacturer).
5. Quickly close the load-break switch of the BatFuse and close the BatFuse (see BatFuse installation manual).
6. Start the system.
11.7

Cleaning the Fans

If the Sunny Remote Control shows the warning W137 Derate exceptionally often, one of the fans is probably
defective or blocked.
Procedure:
• Clean the ventilation grids.
• Clean the fans.
Cleaning the Ventilation Grids
Proceed as follows to clean each ventilation grid.
Procedure:
1. Remove the ventilation grid laterally.
2.
Damage to the inverter due to foreign bodies
• Do not remove the ventilation grid permanently, otherwise foreign bodies could penetrate the enclosure.
3. Clean the ventilation grid with a soft brush, a paint brush, or compressed air.
4. Close the recessed grips with the ventilation grids. Ensure that the assignment is correct. The correct assignment is
marked on the inside of each ventilation grid: links/left for the left-hand side and rechts/right for the right-hand
side.
Cleaning the Fans
Proceed as follows to clean each fan.
Danger to life from electric shock due to high voltages
High voltages are present inside the Sunny Island. 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 Sunny Island from voltage sources (see Section 9, page 45).
1. Disconnect the Sunny Island from voltage sources (see Section 9, page 45).
2. Wait for the fans to stop rotating.
Operating Manual
11 Cleaning and Maintenance
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