Final checks
1. Make sure that all the screws have been tightened with the correct torques.
NOTICE
Damage and/or short-circuits at the double submodules
If you do not comply with the screw torques, then this can lead to damage and/or short-
circuits at the double submodules.
When installing the double submodules comply with the specified torques.
Screw type Torque
M4 1.8 Nm
M5 3 Nm
For the M5 x 25 screws of the upper holding rail, a torque of 6 Nm
must be used (see step 4 of the description on removing).
M8 13 Nm
2. Check whether all of the couplings of the cooling water connections are correctly inserted
and interlocked (shift the plastic ring towards the front and insert the locking ring).
NOTICE
Locking ring not inserted
The gating unit can be damaged if the flow of water through the heatsink is not guaranteed.
In order to guarantee a reliable flow of water through the heat sink, the locking ring must
be correctly inserted. After the water coupling has been interlocked, insert the locking ring
into the slot between the locking ring and the coupling.
If the locking ring cannot be inserted, then check whether the water coupling is correctly
inserted and interlocked.
Note
Ventilating the deionized water circuit
After replacing the double submodule, the deionized water circuit must be ventilated.
Resetting the bypass marking
When the bypass has been triggered, the double submodule is electronically marked. After
installing a new double submodule, including bypass, you must reset this marking. Proceed
as follows:
1. Select the p6112 parameter in the AOP or STARTER.
2. Enter the number of the replaced double submodule. The numbering of the double
submodule is identical to the number of the alarm value of alarm A30203.
3. Select parameter p6113. Set the value to "0". This will reset the electronic marking.
Maintenance
9.7 Repair
SINAMICS SM120 6SL38855?B
Operating Instructions 12/2015 113
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