Siemens SINAMICS S120 Equipment Manual page 238

Maintenance and servicing
9.4 Replacing components
Preparatory steps
• Disconnect the drive line-up from the power supply.
• Allow unimpeded access.
• Remove the protective cover.
Removal steps
The steps for the removal procedure are numbered in accordance with Fig. 9-20.
1. Undo the retaining screws for the control module holder and the electronics plug-in
module (2 screws and one nut) and remove the control module holder.
2. Disconnect the plug connections for the fiber optic cables and signal cables (5 plugs).
3. Remove the DRIVE-CLiQ cables and connections on –X41 / –X42 (5 plugs).
When removing the slide-in electronics unit, you have to disconnect 5 further plugs one after
the other (2 at the top, 3 below).
Caution
When removing the fan, ensure that you do not damage any signal cables.
The Power Supply Board can then be removed from the slide-in electronics unit.
Installation
To re-install the fan, carry out the above steps in reverse order.
Caution
The tightening torques specified in Table 9-1 must be observed.
Carefully re-establish the plug connections and ensure that they are secure.
The screwed connections for the protective covers must only be tightened by hand.
9-44
SINAMICS S120 Equipment Manual, Edition 12/2007, 6SL3097-2AM00-0BP4
Chassis Power Units Liquid Cooled