4. Remove the ground connection on the Power Stack Adapter chassis.
5. Use a Torx screwdriver to loosen the four fastening screws of the Power Stack Adapter. Do
not remove the screws.
6. Push the Power Stack Adapter upwards.
7. Remove the Power Stack Adapter.
Installing the Power Stack Adapter
1. Execute the steps described in the section "Removing the Power Stack Adapter" in the
reverse order.
2. Tighten the fastening screws with a torque of 10 Nm.
3. Ensure the correct connection of the fiber-optic cables.
NOTICE
Damage to the power semiconductors
The power semiconductors can be damaged if you replace the fiber-optic cable at the
Power Stack Adapter.
Observe the connector assignment marked on the fiber-optic cables.
Sending in the Power Stack Adapter
You can send in the defective Power Stack Adapter for a special examination. Further
information is contained in the note "Special examination of defective components (Page 161)".
Observe the following when you send in a component:
1. Close the fiber-optic cable connectors with blanking plugs.
2. Send the defective Power Stack Adapter only in the approved packaging.
9.5.7
Replace the sponge for the leak detector
Principle of operation
If the sponge is dry (hard), the switch is closed.
If there is water in the drive, the sponge becomes soft and the switch opens.
Maintenance
9.5 Repair
SINAMICS SM150 6SL3815-7NP41-0AA1
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Operating Instructions Rev.201910281301 EXAMPLE
