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User's manual<br />
System Amplifier K&F TOPAS<br />
7. Service<br />
7.1 Hardware<br />
7.1.1 Replace/Clean the Air Filters<br />
The device is equipped with three fans and air filters. To clean the air filters, remove both<br />
front panel lids and take out the air filter elements. Remove any dust by tapping on the filter<br />
or blowing the dust out.<br />
If you cannot clean the air filters, you can order them as replacement parts from your dealer.<br />
Please do not use any arbitrary foam filter that you have cut to size since the airflow and a<br />
functional cooling system could no longer be guaranteed.<br />
Do not use any cleansers containing solvents.<br />
7.1.2 Replacing the Fuse<br />
The device’s power supply unit is internally protected with a fuse. A blown fuse indicates an<br />
error in the device.<br />
Only trained specialised personnel may replace it with the same type of fuse.<br />
Warning<br />
7.1.3 Replacing the Backup Battery of the Real Time Clock<br />
The device is equipped with a lithium battery as a backup for the real time clock. The life<br />
span of the battery is approx. 10 - 15 years. Your supplier can change the battery when this<br />
becomes necessary.<br />
The battery may not be replaced by a different type.<br />
Caution<br />
KLING & FREITAG GMBH © 2012 Revision 3.0 Page 49 of 65
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