ABB ACS880-107LC, Hardware Manual

Page: 60 / 140

Inverter modules
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Replacing a frame R8i inverter module
WARNING!
Obey the safety instructions given in ACS880 liquid-cooled multidrive
cabinets and modules safety instructions (3AXD50000048633 [English]).
If you ignore the safety instructions, injury or death, or damage to the
equipment can occur.
If you are not a qualified electrical professional, do not do installation or
maintenance work.
WARNING!
Make sure that the replacement module has exactly the same type code as the
old module.
WARNING!
Beware of hot coolant. Do not work on the liquid cooling system until the pressure
is lowered down by stopping the pumps and draining the coolant. High-pressure
warm coolant (6 bar, max. 50 °C) is present in the internal cooling circuit when it
is in operation.
WARNING!
To avoid breaking the coolant pipes, do not overtighten the nuts of the unions.
Leave 2 to 3 millimeters (0.08 to 0.12 inches) of thread visible.
2 … 3 mm (0.08 … 0.12 ″ )
WARNING!
Use the required personal protective equipment. Wear protective gloves and long
sleeves. Some parts have sharp edges.
Removing the module
1. Repeat the steps described in section Electrical safety precautions (page 27) .
2. Remove the shrouding in front of the module.
3. Undo the locking screws of the swing-out frame (if present) and open it.
4. Unplug the wiring from the module and move it aside. Use cable ties to keep the wiring
out of the way.
60 Maintenance