1. Remove the screws for the louvered fan grid in the cabinet door.
Figure 9-3 Example diagram: Replacing filter mats
2. Remove the filter mat.
3. If there is a slight amount of dirt, clean the filter mat at a suitable location. Depending on the
degree of pollution, you can also clean the filter mats using a vacuum cleaner. If the filter mat
is damaged, or the frequency of alarms increases, dispose of the dirty filter mat in the correct
fashion. Use a new filter mat.
4. Insert the filter mat in the frame of the fan opening. In order that dirt is not drawn in, insert
a clean mat in the same direction as it was installed before the cleaning.
5. Carefully place the louvered cover over the frame.
6. Retighten the cover screws.
9.5.3 Replacing the back-up battery of the AOP30 operator panel
Table 9-1 Technical specifications of the backup battery
Type CR2032 3V lithium battery
Manufacturer Maxell, Sony, Panasonic
Nominal capacity 220 mAh
Maximum permissible charging current 10 mA, limited to < 2 mA in the operator panel
Self-discharge at 20° C 1%/year
Service life in the backup mode > 1 year at 70° C; >1.5 years at 20° C
Service life in operation > 2 years
Replacing the backup battery
1. Switch off the main circuit-breaker.
2. Open the cabinet.
3. Disconnect the 24 VDC power supply and communications line on the operator panel.
4. Open the cover of the battery compartment.
Maintenance
9.5 Maintenance
SINAMICS SL150 6SL38600UL432AA0Z
84 Operating Instructions Rev.201910281433 EXAMPLE
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