14 Safety instructions
Work with an installation stand and lifting
Note: The installation stand is not included as standard in the delivery. Please contact
local ABB representative for further inquires regarding installation stand.
WARNING!
• Attach a lifting chain to the front of the module before pulling out the entire module
from the cabinet.
• Ensure that the installation stand legs have been locked in position before moving a
module onto it.
• Ensure that the lifting chains have been evenly adjusted before lifting the module.
• Do not go under a lifted module or lift a module over other people.
Work on the liquid cooling system
These instructions are intended for all who are responsible for installation and
maintenance work of the liquid cooling system of the converter. Ignoring these instructions
can cause physical injury or damage to the equipment.
WARNING!
• Beware of hot liquid. Do not work on the liquid cooling system until the pressure is
lowered down by stopping the pumps. High-pressure warm coolant (6 bar (600 kPa),
over 50 °C (122 °F)) is present in the internal cooling circuit when it is in operation.
• Before power switch-on, make sure that the internal cooling circuit is filled up with
appropriate coolant. Running the pump dry will damage it. Also the converter will not
cool down.
• Avoid skin contact with coolant, especially antifreeze. Do not syphon them by mouth. If
such substance is swallowed or gets into the eyes, seek medical advice.
• Do not overtighten the outer union of the nuts of the liquid hoses -
leave 2…3 mm (0.08…0.1 in.) of thread visible. Overtightening will
break the hose.
• Drain the unit before storing in temperatures below 0 °C (32 °F).
Freezing of the liquid cooling system is not allowed. Add antifreeze and corrosion
inhibitors to the cooling liquid. Operation at liquid temperatures below 5 °C (41 °F) is
not permitted, not even with antifreeze.
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