Wiring the Sunny Boy Closing the SMA DC-Disconnect (if applicable)
5-28 SMA America SB3000US-4000US-11-SE1607
Note: Be sure when reinstalling the four screws that the lock
washers are installed correctly. The teeth of the washers
should face towards the LID.
5. While holding the cover in place, carefully insert the four
screws with lock washers through the holes in the cover
into the threaded holes in the case and turn them until
they are finger-tight. Be careful not to cross-thread any of
the screws. Do not use power tools to start the screws.
6. Verify that the cover is in the correct position and that the
seal is in place between the case and the cover.
7. Tighten the cover screws to a torque of 79 lb-in. (9 Nm.)
Closing the SMA DC-Disconnect
(if applicable)
1. Position the cover onto the
SMA DC-Disconnect and insert
the switch handle into the
cover.
2. urn the switch to the
"0"
position and tighten the screw
on the right side of the switch
with the provided allen-key.
3. Install the M6 x 10 screw and
washer on the bottom side of
the SMA DC-Disconnect, to
fasten the cover. The teeth of
the washer must face toward
the cover in order to ensure
proper grounding. Tighten the
screw to a torque of 44 in-lb (5
Nm).
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