Service - Siemens Sinamics S120 Manual

The numbering below corresponds to the numbers in the figure.
1. Remove the lower fastening screw for the plug-in electronics module / the front electronic
fan.
2. Detach the plug connection of the power cable for the front electronic fan.
3. Tilt the electronic fan forward and remove it.
4. The venting lever (behind the electronic fan) is now freely accessible.
Danger to life through electric shock due to discharge of coolant
A discharge of coolant can result in short-circuits with damage and malfunctions up to
death or serious injury.
• Make sure that liquid-cooled devices are completely dry before being switched on and
• Ensure that no liquid coolant is sprayed onto the devices or additionally mounted
• Switch off immediately if there are any leaks causing liquid to escape (drips or pools).
NOTICE
Failure of the cooling due to air bubbles in the cooling circuit
Air bubbles in the cooling circuit impair the correct cooling function.
• Make sure there are no air bubbles in the cooling circuit by venting.
9.8

Service

Service
Recommended service activities for the cooling circuit are described in Chapter
"Maintenance (Page 350)".
Liquid-cooled chassis power units
Manual, (GH7), 11/2016, 6SL3097-4AM00-0BP7
Cooling circuit, coolant properties and protection against condensation
WARNING
put into operation.
electrical components during venting.
9.8 Service
347