Replacing The Varistors - SMA SUNNY BOY 3000TL Service Manual

7

Replacing the Varistors

Proceed as follows to replace each varistor.
Procedure:
1.
Danger to life due to high voltages
• Disconnect the inverter from all voltage sources (see Section 2.2, page 7).
2. Loosen the screws on the upper enclosure lid using an Allen key (AF 4) and remove the
enclosure lid.
3. Position the insertion tool into the clamping
contacts of the connecting terminal plate.
4. Remove the varistor from the connecting terminal plate.
5. Insert the new varistor into the connecting
terminal plate. The labeling on the varistor must
point left to the enclosure.
2 4 S B 3 0 - 6 0 T L - 2 1 - S G - e n - 1 1
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