Siemens SINAMICS S120 Equipment Manual page 156

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. 9-4.
1. Disconnect the plugs for the fiber optic cables and signal cables (5 plugs).
2. Remove the DRIVE-CLiQ cables and connections on –X41 / –X42 (5 plugs).
3. Remove the retaining screws for the slide-in electronics unit (2 screws).
Caution
When removing the fan, ensure that you do not damage any signal cables.
The Control Interface Board can then be removed from the slide-in electronics unit.
Caution
When removing the ribbon cable connector, make sure that you actuate the locking lever on
the connector very carefully (e.g. with a screwdriver) because otherwise the lock could be
damaged.
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.
When dealing with connectors with a lock, make sure that the locking lever is securely
engaged once connected.
The screwed connections for the protective covers must only be tightened by hand.
9-12
When removing the slide-in electronics unit, you have to disconnect 5 further plugs one
after the other (2 at the top, 3 below).
SINAMICS S120 Equipment Manual, Edition 04/2007, 6SL3097-2AM00-0BP2
Chassis Power Units Liquid Cooled