SMA SB 2500TL-21 Installation - Manual (Page 62)

Maintenance and Cleaning SMA Solar Technology AG
62 SB25-30TLST-21-IA-en-13 Installation Manual
9 Maintenance and Cleaning
9.1 Cleaning the Inverter
If the inverter is soiled, 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 output due to excessive heat (temperature symbol on the
display lights up), this may be for one of the following reasons:
• The cooling fins on the rear side of the enclosure are clogged.
– Clean the cooling fins using a soft brush.
• The air ducts at the top are clogged.
– Clean the air ducts using a soft brush.
9.3 Checking the Electronic Solar Switch for Wear
Check the ESS for wear before plugging it in.
Result Measure
☑ The metal tongues inside the plug are
not damaged or discoloured.
1. Insert the handle of the ESS securely into the
socket at the bottom of the enclosure.
2. Recommission the inverter (see Section 7
"Commissioning" (page 52)).
☑ The metal tongues inside the plug
have a brown discolouration or are
burned out.
The ESS can no longer safely disconnect the DC side.
1. Replace the ESS handle before attaching it again.
Order the new ESS handle through the
SMA Service Line (see Section 15 "Contact"
(page 92)).
2. After replacing the ESS, commission the inverter
again (see Section 7 "Commissioning" (page 52)).