118 Maintenance
Replacing the inverter module (frames R8i, 2 × R8i,
3×R8i)
WARNING! Obey the safety instructions, page 11. If you ignore the instructions,
physical injury or death, or damage to the equipment can occur.
WARNING! If you ignore these instructions, physical injury or death, or damage to
the equipment can occur.
• Use extreme caution when manoeuvering the inverter module. Extend the support
legs of the module when it is removed from the cabinet! Do not tilt the module! The
module is heavy and has a high center of gravity. It topples over easily if handled
carelessly.
• Lift the module by the upper part only using the lifting hole(s) at the top!
• Do not use the ramp with plinth heights over 50 mm.The ramp supplied with the
inverter is designed for a plinth height of 50 mm (the standard plinth height of ABB
cabinets). Tighten the four fastening bolts of the ramp carefully.
Extracting the module from the cubicle
1. Stop the inverter and do the steps in section Precautions before electrical work on
page 12 before you start the work.
2. Open the cubicle door.
3. Remove any shrouds that protect the busbars and cable entries.
4. Open the transparent cover on the front of the inverter module (the rightmost module)
and disconnect the fiber optic cables. Move the cables aside.
5. Remove the L-shaped DC busbars on top of the module.
6. Disconnect the terminal block (X50) next to the DC busbars.
7. Remove the two module fastening screws (7a) at the top. At the base of the module,
loosen the two fastening bolts (7b) but leave them in place; lift the bracket (7c) and
fasten it into the up position carefully.
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