SMA SUNNY BOY 2000HF - 9 Maintenance and Cleaning; Checking Heat Dissipation; Cleaning the Fan

SMA Solar Technology AG Maintenance and Cleaning
Installation Guide SB20_25_30HF-IEN102911 63
9 Maintenance and Cleaning
Impurities such as dust or pollen can cause heat accumulation that can lead to yield losses. Check the
inverters and the cables for visible external damage. Contact the SMAServiceline if the inverter is
damaged. If there is damage to the lines, do not perform any repair work or yourself or replace the
lines.
9.1 Checking Heat Dissipation
If the inverter regularly reduces its output due to too high warming (temperature symbol on the display
illuminates), this can be caused by the following:
• The cooling fins on the rear side of the enclosure are clogged with dirt.
– Clean the cooling fins when necessary with a soft brush.
• The fan is clogged.
– Clean the fan as described in the following.
9.1.1 Cleaning the fan
If the fan housing is only soiled with loose dust, they can be cleaned using a vacuum cleaner.If the
fan housing is only soiled with loose dust, they can be cleaned using a vacuum cleaner. If you do not
achieve satisfactory results with a vacuum cleaner, you can dismantle the fan for cleaning.
If the enclosure and fan are very dirty, proceed as follows:
1. Disconnect the inverter as described in section 8”Disconnect the Inverter from Voltage Sources”
(page60).
2. Unlock (1) and pull out (2) the fan socket (A).