Sunny Boy Installation Manual

9 Decommissioning the Inverter
SMA Solar Technology AG
Installation Manual SBxx-1SP-US-41-IA-xx-10 63
9 Decommissioning the Inverter
To decommission the inverter completely upon completion of its service life, proceed as described
in this Section.
CAUTION
Risk of injury due to weight of product
Injuries may result if the product is lifted incorrectly or dropped while being transported or when
attaching it to or removing it from the wall mounting bracket.
• Transport and lift the product carefully. Take the weight of the product into account.
• Wear suitable personal protective equipment for all work on the product.
Procedure:
1.
DANGER
Danger to life due to high voltages
• Disconnect the inverter from all voltage sources (see Section8, page61).
2. Remove the DC conductors from the DC-in terminal block. To release the conductors from the
terminals, open the terminals with a flat-blade screwdriver (blade width: 3.5mm (0.14in)).
While doing so, only touch the terminal block on the black enclosure.
3. Screw out the screws from the DC-in terminal block using a flat-blade screwdriver (blade
width: 3.5mm (0.14in)) and pull the terminal block out of the slot. While doing so, only touch
the terminal block on the black enclosure.
4. Remove the AC conductor L1, L2 and, if necessary, N from the AC-out terminal block. To
release the conductors from the terminals, open the terminals with a flat-blade screwdriver
(blade width: 3.5mm (0.14in)).
5. Screw out the screws from the AC-out terminal block using a flat-blade screwdriver (blade
width: 3.5mm (0.14in)) and pull the terminal block out of the slot.
6. Remove all equipment grounding conductors from the equipment grounding terminals. To do
this, remove each screw (TX 25) and remove the equipment grounding conductor from the
inverter; screw each screw back in (TX 25).
7. Remove the ribbon cable connecting the communication assembly to the Power Unit and plug
the ribbon cable into the COM slot in the Power Unit.
8. Remove all connection cables from the communication assembly. Tip: To release the cables
from the plugs, open the conduit entries using a suitable tool.
9. Remove all conduits with conductors from the inverter. To do this, screw the sleeves out of the
enclosure openings from the inside.
10. Seal all enclosure openings with sealing plugs.
11. Unscrew the two screws on the right and left side of the PowerUnit (TX25) and retain them for
later use. As a result, the Power Unit and the Connection Unit are not connected to one
another.
12. Disconnect and remove the Power Unit from the Connection Unit.
ENGLISH