SMA STP 15000TL Installation - Manual (Page 61)

SMA Solar Technology AG Maintenance and Cleaning
Installation Manual STP20TLHE-IA-IEN122222 61
9 Maintenance and Cleaning
9.1 Cleaning the Inverter
If the inverter is dirty, clean the enclosure lid, the display and the LEDs with clear water and a cloth
only.
9.2 Checking Heat Dissipation
If the inverter regularly reduces its power due to excessive heat (temperature symbol on the display
illuminates), this may be due to one of the following reasons:
• The ventilation grids on the sides are clogged with dirt.
Clean the ventilation grids as described in the following.
• One of the fans is clogged.
The inverter has 2 integrated fans for cooling. One of these is located at the bottom of the
inverter next to the connection area and the other on the left-hand side of the enclosure under
the ventilation grid.
If the fan enclosure is just covered in loose dust, you can clean it with a vacuum cleaner. If you
do not achieve satisfactory results with a vacuum cleaner, you can dismantle the fan for
cleaning, as described in the following sections.
9.2.1 Cleaning the Ventilation Grids
The inverter takes cooling air in from underneath on the left side and blows it out again through the
ventilation grids at the top. Clean the ventilation grids if they are dirty.
1. Turn the rotary fastener of the ventilation grid in the
direction of the arrow until the notch is in a vertical
position.
NOTICE!
Risk of damage to the inverter through intrusion of insects
• The ventilation grids must not be removed permanently, because otherwise the
device will not be protected against the intrusion of insects.