Siemens SINAMICS GL150, Operating Instructions Manual

Page: 86 / 168

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.
If the parallel water circuit branches contain ball valves, these must be opened. To do this,
move the lever in the direction of flow.
To connect the cooling pipes to the DC link reactor, proceed as follows:
1. Connect the main pipes using the supplied adapters.
2. Moisten the O rings with distilled water.
3. Insert the O rings in the couplings.
4. Hand tighten the union nut. Then turn the union nuts another ½ a turn. Use a suitable tool,
e.g. a strap wrench, for this purpose.
NOTICE
Damage caused by overtightening the union nut
The screw cap is made of plastic. The union nut may leak or break if it is overtightened.
● You should therefore not apply too much force when tightening the union nut.
5. Connect the cooling unit in the same way.
Mounting
5.5 Connect to the foundation
SINAMICS GL150 6SL38555UN113KA0Z
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Operating Instructions Rev.201910281450 EXAMPLE