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11.7 Bypass Fuse Exchange
CAUTION
！
Always power the UPS off before exchanging the fuse. Failure to do so can
cause electric shock.
Be careful to avoid injury or
electric shock
.
If the bypass fuse blows, the red ALARM indicator lights and output from the output
terminals stops.
Proceed as follows to exchange the fuse for a new fuse, using the supplied bypass fuse.
①
Stop the inverter by pressing and holding it for 1 second, and then set
MAIN SW to “OFF”.
②
Remove the fuse on the back panel of the UPS by pushing it in with a minus screwdriver
and turning it in the counterclockwise direction.
③
Insert the new fuse, and return it to the original location by turning it in the clockwise
direction.
④
Set MAIN SW to “ON”, and then start the UPS by pressing and holding it for
1 second.
For details about UPS startup, see §9.1 “UPS Startup (Normal Operation)”.
UPS back panel
Note
・
If you exchange the bypass fuse while the UPS is powered on, the red ALARM indicator will
remain lit until you power the UPS off. Always power the UPS off before exchanging the
fuse.
・
Discard the old fuse as non-combustible industrial waste after exchanging it.
EXT.
BATT
MAIN SW
Bypass fuse
This completes the fuse exchange.