SMA WB 3600TL - Manual (Page 65)

SMA Solar Technology AG Maintenance and Cleaning
Installation Guide WB36TL_50TL-IEN102011 65
9 Maintenance and Cleaning
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 various factors. Please see the following table for the various
causes and measures.
9.1.1 Cleaning the Fan
If the fan enclosure is soiled with loose dust, it can be cleaned using a vacuum cleaner. If you do not
achieve satisfactory results with a vacuum cleaner, dismantle the fans for cleaning.
Procedure
1. Disconnect the inverter as described in section 7 ”Disconnecting the Inverter” (page 59).
2. Wait for the fan to stop rotating.
3. Unlock and remove fan plugs (A).
4. Push both fastening clips of the fan (B) towards the
fan and remove the housing with the fan.
Cause Action
The cooling fins on the rear side of the enclosure
are clogged with dirt. • Clean the cooling fins with a soft brush.
The ventilation ducts at the top are clogged with
dirt. • Clean the ventilation ducts with a soft brush.
The fan is clogged with dirt. • Clean fan as described in the following
section.