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112 Maintenance
Supply modules
Replacing the supply module (frame R7i)
￭
WARNING!
Obey the safety instructions given in
cabinets and modules safety instructions (3AXD50000048633
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!
Use the required personal protective equipment. Wear protective gloves and
long sleeves. Some parts have sharp edges.
Removing the module
1.
Do the steps in section
2.
Disconnect the wiring from the R7i module. Move the wiring aside. Use cable ties
to keep the wiring out of the way.
3.
Close the inlet and outlet valves of the cubicle.
4.
Lead the drain hoses (on the left-hand and right-hand sides of the cubicle) into a
suitable container. Open the drain valves. This will drain all the equipment in the
cubicle.
5.
After the module has drained, disconnect the coolant piping from the module.
6.
Remove the module retaining screws at the top and the bottom of the module
(two screws each). Undo the locking screw (6 mm hex key) at the top of the module.
Electrical safety precautions (page
ACS880 liquid-cooled multidrive
43).
[English]).
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