4.2. Replacing Fan Modules
The SG4500 Series has three individual and independent fan modules that can be hot-swapped
onsite. A fan module is shown below.
Figure 4.4. An Individual Fan Module
The Recommended Replacement Interval
All fan modules are liable to wear from mechanical movement and fan failure can lead to much
more serious failures from the overheating of electronic components. Although fan modules are
built for prolonged use, it is nevertheless a recommended precaution to replace them every
three years.
Important: Dusty environments reduce fan lifetimes
SG4500 Series fans are designed to work in environments with reasonable air quality.
Elevated dust levels in the surrounding air can substantially reduce the operating
lifetimes of fan modules.
Identifying Failure
There are two ways of identifying fan failure:
•
Hardware Monitoring through CorePlus
By using the
hardware monitoring
feature of CorePlus it is possible to examine fan speeds and
also to have alarms set should a fan speed fall below a particular value.
•
Manual Inspection
Complete fan failure can be seen by simple manual inspection of the fan to check if it is still
spinning. There are no other external physical indicators on a fan module to signal failure.
Replacement Procedure
The following steps should be followed to replace a fan module:
Chapter 4: Product Maintenance
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