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Praesideo 3.5 | Installation and User Instructions | 7 | System Hardware Installation
en | 307
34 Preventive maintenance
The system requires minimum maintenance. To keep
the system in good condition, do the following:
34. 1 Clean air inlets
The power amplifiers can collect dust as a result of the
internal fans. Once a year you should use a vacuum
cleaner to clean the air inlets of all units in the 19-inch
racks.
34.2 Change battery
The battery on the main board of the network controller
needs to be replaced before failure. Once every eight
years, change the battery. The battery is a 3.0 V type
CR2032. Unpower the unit before changing the battery.
After replacing the battery, the time and date settings of
the PRS-NCO-B will be lost and must be re-entered (see
section 5.6.8).
Bosch Security Systems | 2011-02
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