SMA WB 3300-11 Installation - Manual (Page 53)

SMA Solar Technology AG Maintenance and cleaning
Installation Manual WB33-38-IA-IEN120940 53
Cleaning the Fans
5. Press the two upper latches towards the rear and
the lower latch towards the front.
6. Remove the fan by pulling it slowly and carefully
downwards.
7. Release and pull out the fan plug inside the inverter.
The fan cables are long enough to let you lift the fan out sufficiently 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 fan operation, 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 using Sunny Data Control,
Sunny Explorer or Sunny WebBox.
or
• Plug the provided jumper into the system control board.
Setting Parameters
1. Request an installer password from the SMA Service Line (contact see page 77).
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 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 now completed.
NOTICE!
Damage to the fan through use of compressed air
• Do not use compressed air to clean the fan. The fan could be damaged as a result.