SMA SB 3300-11 Installation - Manual (Page 46)

Maintenance and Cleaning SMA Solar Technology AG
46 SB33-38-11-IA-en-62 Installation Manual
Cleaning the Fans
5. Push the two upper latches backward and the
lower latch forward.
6. Remove the fan by pulling it slowly and carefully
downward.
7. Unlock and unplug the fan plug inside the inverter.
The fan cables are long enough that you can lift the fan far enough out to disconnect the internal
plugs in the inverter.
8. Remove the fan.
9. Clean the fan with a soft brush, a paint brush, or a damp cloth.
10. After cleaning, reassemble everything in reverse order.
11. Check the functioning of the fan as described in the following section.
8.2.2 Checking the Fans
There are two ways to check whether the fan is working:
• Set the "Fan-Test" parameter to "1" in the installer mode with a communication product.
or
• Plug the provided jumper into the system control board.
Setting Parameters
1. Request the installer password from the SMA Service Line (contact: see page 72).
2. Set the "Fan Test" parameter to "1" in the installer mode.
3. Check the air-flow of the fan.
The inverter draws air in from underneath and then blows it out at the top left. Listen for any
unusual noise that could indicate incorrect installation or that the fan is defective.
4. After checking the fan, set the "Fan Test" parameter back to "0".
☑ The fan test is completed.
NOTICE!
Damage to the fan through use of compressed air.
• Do not use compressed air to clean the fan. This can damage the fan.