Procedure for Receiving a Replacement Device


Under fault conditions, the inverter may need to be replaced. If this is the case, you will receive a replacement device from SMA Solar Technology AG. If you received a replacement device, replace the defective inverter with the replacement device as described in this section.

Procedure:

  • Decommission the defective inverter.

  • Commission the replacement device.

  • Ship the defective inverter.

Decommissioning the Defective Inverter

CAUTION

Risk of injury when lifting the inverter, or if it is dropped

The inverter weighs 61 kg. There is risk of injury if the inverter is lifted incorrectly or dropped while being transported or when attaching it to or removing it from the wall mounting bracket.

  1. Transport the inverter always as described below.
  1. DANGER

    Danger to life due to electric shock

    1. Disconnect the inverter from all voltage sources Disconnecting the Inverter from Voltage Sources).
  2. Remove the AC cable from the inverter. Press the locking levers all the way upward and pull the conductors out of the terminal block for the AC cable.
  3. Press down the locking levers of the terminal block for the AC cable.
  4. Remove the cable for the additional grounding from the grounding terminal, if necessary.
  5. If the multi-function relay or the SMA Power Control Module are used, remove the connection cable from the inverter.
  6. If other cables (e.g. data cables or network cables) are connected, remove them from the inverter.
  7. Remove any installed interfaces from the inverter (see the manual for the communication interface).
  8. If surge arresters are present, remove the surge arresters from the defective inverter Replacing the Surge Arrester).
  9. Close all enclosure openings.
  10. Keep the DC load-break switch in a safe place as the replacement device will be delivered without the DC load-break switch.
  11. CAUTION

    Risk of burns due to hot enclosure parts

    1. Wait 30 minutes before disassembling the inverter. This will allow the enclosure to cool down and thus prevent burn injuries.
  12. Remove the inverter by lifting it vertically up and off the wall mounting bracket.

Commissioning the Replacement Device

NOTICE

Damage to the enclosure seal in subfreezing conditions

If you open the product when temperatures are below freezing, the enclosure seals can be damaged. Moisture can penetrate the product and damage it.

  1. Only open the product if the ambient temperature is not below -5°C.
  2. If a layer of ice has formed on the enclosure seal when temperatures are below freezing, remove it prior to opening the product (e.g. by melting the ice with warm air). Observe the applicable safety regulations.

NOTICE

Damage to the inverter due to electrostatic discharge

Touching electronic components can cause damage to or destroy the inverter through electrostatic discharge.

  1. Ground yourself before touching any component.
  1. Mount the replacement device and make the electrical connections (see the operating manual of the inverter).
  2. If needed, install interfaces in the replacement device and connect the interfaces (see the interface manual).
  3. If needed, install a surge arrester in the replacement device Retrofitting the Surge Arrester Type II).
  4. If there is a label with "transport lid" affixed to the upper lid of the replacement device, replace the upper enclosure lid of the replacement device with the upper enclosure lid of the defective inverter.
    • DANGER

      Danger to life due to high voltages

      Wait 20 minutes before removing the upper enclosure lid to allow residual voltages to discharge.

    • Loosen the screws of the upper enclosure lid using an Allen key (AF 4) and remove the enclosure lid.

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    • Position the upper enclosure lid with the six screws and conical spring washers on the enclosure and tighten it using an Allen key (AF 4) in the order 1 to 6 (torque: 6 Nm ± 0.3 Nm).

  5. Insert the lower enclosure lid from above and flip it down. Use the enclosure lid of the defective inverter for this if there is a label with "transport lid" affixed to the enclosure lid of the replacement device. The screws must protrude from the lower enclosure lid.
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  7. Tighten all six screws of the lower enclosure lid using an Allen key (AF3) in the order 1 to 6 (torque: 2.0 Nm ± 0.3 Nm). By tightening the screws in the prescribed order, you avoid warping the lid, which would keep it from sealing correctly. Tip: If the screws fall out of the lower enclosure lid, insert the long screw into the lower middle hole and the five short screws into the other holes.
  8. Recommission the replacement device Commissioning the Inverter). Remount the DC load-break switch of the defective inverter to the replacement device.
  9. Configure the replacement device (see the operating manual of the inverter).
  10. Replace the replacement device in the communication product.

Shipping the Defective Inverter

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  1. If necessary, position the upper enclosure lid with the six screws and conical spring washers on the enclosure and tighten it using an Allen key (AF4) in the order 1 to 6 (torque: 6 Nm ± 0.3 Nm).
  2. Insert the lower enclosure lid from above and flip it down. The screws must protrude from the lower enclosure lid.
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  4. Tighten all six screws of the lower enclosure lid using an Allen key (AF3) in the order 1 to 6 (torque: 2.0 Nm ± 0.3 Nm). By tightening the screws in the prescribed order, you avoid warping the lid, which would keep it from sealing correctly. Tip: If the screws fall out of the lower enclosure lid, insert the long screw into the lower middle hole and the five short screws into the other holes.
  5. Pack the defective inverter in the packaging of the replacement device and arrange with SMA Solar Technology AG for it to be picked up.