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5.5 Replacing the Cooling Fan
Timing of cooling fan replacement
IMPORTANT
Replace the cooling fans periodically.
Continued use of a UPS at the end of its fan life may cause the internal
temperature of the UPS to exceed its rating.
The cooling fan has reached the end of its service life in the following cases.
At the second battery replacement
Cooling fans should be replaced periodically with new one due to
bearing wear. Depending on the operating environment, the life of
the cooling fan may also be shortened
[ALARM] LED
(orange) is on
Beep beep …
(continuous sound)
[BYPASS] LED
(orange)
is on
- FAULT -
Bypass
Cooling fan error
Input: ***.*V **.* Hz