7 Maintenance
38
7.2
Replacing the Cooling Fan
Timing of the cooling fan replacement
Important
Replace the cooling fan periodically.
If continuing to use the UPS that the fan life ended, there is a possibility that the inside
temperature of the UPS may get out of the rated specification.
In the following cases, it is the end of cooling fan life. Replace the cooling fan.
When the ALARM LED (orange) and the BYPASS LED (orange) light up, after a
warning beep sounded for 120 seconds
At the second battery replacement (at an ambient temperature of 25 degrees C and
approx. 6th year in cases of the rated load)
It is necessary to replace the cooling fan with new one periodically, since the cooling fan
has a life by wear of the bearing. However, since the life of cooling fan may become short
according to the use environment, replace the cooling fan early.
Pi
――
(continuance)
Pip-pip-
pip-pip
・・・
(continuous sound)
The BYPASS LED
(orange) lights up.
The ALARM LED
(orange) lights up.
Summary of Contents for M-UPS050AD1B
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