User's Manual Part 3

RBS 2308 and RBS 2309 User’s Guide
P010581A
Test
FAN UNT-01
Fault
Opera-
tional
Figure 75 Fan Unit Test Button
5. Check that the test sequence below is carried out:
• The fans run at maximum speed for approximately 5 seconds
• The fans run at nominal speed for approximately 5 seconds
• The fans stop within approximately 5 seconds
6. Ensure that the indicator status of the fan unit is in accordance with the
table below:
Table 64 Fan Unit Indicators After Test
Fan Unit Indicators
Status
Fault
Off
Operational On
Replacing Fan Unit
7. Replace the fan unit, see Section 10.5.1 Replacing a Fan Unit on page 207.
10.3.7 SO CF RU:31/ Environment
This section describes how to localize an SO CF RU:31/ Environment fault.
This fault is only generated by external factors, for example climate or incoming
power.
Related RU
The RU listed below has higher priority than the RU described in this section. If
it is present, go to the related section before handling this RU.
• If “SO CF RU:34/ IDB” appears in the OMT, then proceed with Section
10.3.8 SO CF RU:34/ IDB on page 187
1
85
EN
/LZT 720 0027 Uen R8A 2006-06-27