Siemens SINUMERIK 840D sl Manual page 43

Procedure
1. Remove the spacers.
2. Fit the seal around the cooling ribs of the NCU.
3. Loosen the three M3 screws on the upper clip and push the clip up until the upper hole
4. Retighten the 3x M3 screws (0.8 Nm) of the clip.
5. Mount the top and bottom of the NCU with heat sink directly on the rear panel of the control
NCU 7x0.3 PN, NCU 7x0.3B PN
Manual, 06/2014, 6FC5397-1EP40-5BA1
Note
The seal is not included with the NCU. They must be additionally ordered, see Ordering
data (Page 21).
protrudes beyond the housing.
cabinet using two M6 screws (6 Nm) (
6.5 Mounting the NCU for external cooling
①
see figure titled "Panel cutout").
Assembling
43