The Fan Unit | Ventilation Concept |
13.1The Fan Unit
The fan unit includes two redundant fans.
There are four LED indicators (figure 82) on the front of the fan unit for fan status monitoring.
Figure 82: The fan unit
| Fan 1 LEDs | Fan 2 LEDs | ||
Fan condition |
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1 | 2 | 4 | 3 | |
| (green) | (amber) | (green) | (amber) |
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Present and OK | ON | OFF | ON | OFF |
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Not present | OFF | OFF | OFF | OFF |
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Present and failed | ON | ON | ON | ON |
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Table 2: Fan unit indicators
In addition, for each fan in the unit an error LED driven by backup capacitor is available. These two LEDs (a) are located on the top of the fan unit to indicate the respective defective fan. The LEDs can be activated via a pushbutton (b) after the fan unit has been removed from the chassis.
140 | Operating Manual | BX600 S3 |
