Maintenance
SMA America, LLC
52
SB8-10TL-IUS103811
Installation Guide
9 Maintenance
9.1 Checking heat dissipation
9.1.1 Cleaning the fans
If the fan guards are only dirtied with loose dust, they can be cleaned with a vacuum cleaner. If you
do not achieve satisfactory results with a vacuum cleaner, dismantle the fan for cleaning.
To do so, proceed as follows:
1. Disconnect the Sunny Boy from both the DC and AC connections, as described in section
8.1 ”Opening the Sunny Boy” (page 48)
2. Wait for the fans to stop rotating.
Cleaning the fan guards
3. Push the two latches at the right edge of the black
plastic cover to one side. Remove it carefully with
the fan guards mounted behind it.
4. Clean the fan guard with a soft brush, a paint brush,
a cloth, or compressed air.
Cleaning the fan
5. Press the front latches backwards and the rear
latches forwards.
6. Remove the fan by pulling it slowly and carefully
downwards.
7. Unlock and remove the plugs.
The fan cables are long enough for lifting the fans
far enough out to disconnect the internal plugs in
the Sunny Boy.
8. Remove the fan and clean it with a soft brush, a
paint brush, or a cloth and water.
Do not use compressed air as this can damage the
fan.
9. After cleaning, assemble everything in reverse order.
10. Check that the fans are functional as described in section 9.2.1 ”Checking the fans” (page 54).
