Maintenance SMA America, LLC
82 SB50US-80US-eng-IUS112633 Installation Guide
10.2 Cleaning the Handle Covers
For optimal heat dissipation of the device, the handle covers must be clean. Clean the handle covers
regularly.
1. Remove the handle covers. To do this, put your
finger up into the space between the handle covers
and the enclosure and pull the handle covers to the
side
2. Clean the handle covers with a soft brush or a
paintbrush.
3. Re-secure the handle covers on the inverter. The
side on which they are to be mounted is stated on
the inside of the handle covers ("links/left" and
"rechts/right").
10.3 Checking the DC Disconnect
In the case of normal use, the DC Disconnect does not require any maintenance.
It is recommended, though not compulsory, to:
• Check the DC Disconnect regularly.
• Activate the DC Disconnect 10 times in a row once a year.
Operating the switch will clean the contacts and will extend the life of the DC Disconnect.
NOTICE
Insects entering the Sunny Boy can damage the device.
• The handle covers must not be removed permanently, because otherwise the device
is not protected against the entrance of insects!
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