BU
75
RW/BU
100
RW/BU
200
RW/BU
300
RW
6
55
The fan in the unit has an expected lifespan of approximately 5 years.
Replace it when the Error Lamp is lit and the fan is stopped.
■
Precautions when replacing the fan
The fan can be replaced while the unit is in operation (power supply is being output) or while
the unit is stopped (power supply output is stopped). Choose whichever replacement method
is more convenient.
* If the fan stops or is removed while the unit is in operation, the “EF” status indicator blinks, the
beep sounds continuously, and output is supplied through bypass operation.
In this state, if an input power supply error occurs due to a power failure or other reason, the unit
stops without entering Battery Mode.
* Do not replace the fan while in Battery Mode.
The unit will stop.
When this product is used in compliance with UL standards or CE marking, do
not replace the fan.
●
Fan replacement does not comply with UL, CE standards or CE marking.
Detect abnormally working fans.
(Not rotating, abnormal noise, vibrating, the fan contacting the cover, etc)
6-3
Replacing the fan
Caution
Warning
BU200RW/BU300RW Rear view
Rear cooling fan
Model: BUF300RF
Fixing screws
(Phillips-type, 4 locations)
Front cooling fan
Model: BUF300FF
* Different model from
the rear cooling fan
Fixing screws
(Phillips-type, 4 locations)
BU200RW/BU300RW Front view
(after removing the front panel)
BU75RW/BU100RW Rear view
Rear cooling fan
Model: BUF100R
Fixing screws
(Phillips-type, 4 locations)
Do not insert metal objects into the fan recess.
•
Doing so may cause electric shock or short-circuit.
Do not put your fi ngers into the fan.
•
The fan spins when the unit is connected to commercial power, even when the power
switch is OFF. .
•
Doing so may result in injury.
• BU75RW/BU100RW:
Rear fan only. The unit does not have a front fan.
• BU200RW/BU300RW:
There are fans on the front and back sides of the
unit.
