Siemens SINAMICS S120 Equipment Manual page 63

Danger to life from electric shock due to insufficient insulating clearance
Incorrect routing of the coolant lines can result in insufficient insulating clearance to live
parts and can cause death or serious injury.
• Route the coolant pipes very carefully.
• Make sure that the coolant lines do not come into contact with live parts and that an
• Mechanically secure the coolant lines and check that they have no leaks.
Note
Checking the hose lines
The inspection intervals depend on the prevailing ambient conditions.
The following points should be noted for the coolant hoses:
• Damage through abrasion points
• Embrittlement (e.g. forming of cracks)
• Leaks
• The hose slipping out of the coupling
• Deformations that do not comply with the natural shape of the hose (e.g. separation of
layers and blistering)
• Exceeding the storage and use times
In accordance with the accepted rules and standards, we recommend a testing cycle of
five years with the appropriate test pressure (twice the operating pressure).
Note
Replacement seal
The seals for the screwed connections can be used only once when the cooling circuit is first
assembled. The seals must be replaced if the circuit is disassembled and assembled again.
The replacement seal is commercially available as flat Viton polymer seal with hardness 75
(+/-5) Shore A (Viton is the commercial name for elastomers with the abbreviations FPM and
FKM). The dimensions are as follows: Outer diameter 26 mm, inner diameter 15 mm,
thickness 1.5 mm.
Water-cooled chassis power units for common cooling circuits
Manual, 08/2017, 6SL3097-4AM10-0BP0
WARNING
insulation clearance (clearances and creepage distances) of >13 mm is always
maintained.
Line-side power components
3.2 Active Interface Modules
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