NOTICE
Damage caused by foreign bodies in the cooling system
Foreign bodies in the cooling system can cause blockages in individual circuits. As a result,
the water-cooled components overheat and the converter fails.
● For this reason, make sure that no foreign bodies can enter the water circulation system.
● Only remove the protective cover immediately prior to connecting the water circuit.
Connect the re-cooling unit
Connect the deionized water circuit of the re-cooling unit to the deionized water piping of the
converter. Refer to the associated information about the ionized-water connections in the
dimension drawing.
The inlet and outlet pipes are appropriately marked. When connecting the re-cooling unit,
ensure that the inlet pipe and return pipe are connected correctly. Only use the supplied
connecting pipes.
Hand-tighten the union nut ③ of the connecting pipe for the inlet and return pipes.
① Inlet (blue)
② Return (red)
③ Union nut
Figure 5-4 Water piping
To establish the connection of the raw water circuit, observe the details in the dimension
drawing.
Assembly
5.6 Connecting the water circuits
SINAMICS PERFECT HARMONY GH150 6SL38253AE412AA1-Z
78 Operating Instructions Rev.201910281231 EXAMPLE
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