Maintenance
41
§
§
1
1
3
3
.
.
3
3
B
B
y
y
p
p
a
a
s
s
s
s
B
B
r
r
e
e
a
a
k
k
e
e
r
r
R
R
e
e
s
s
e
e
t
t
CAUTION
！
Always power the UPS off before resetting the bypass breaker.
Failure to do so can cause electric shock.
If the bypass breaker trips, the red ALARM indicator lights and output from the output terminals stops.
Proceed as follows to reset the bypass breaker.
①
Stop the UPS by setting
MAIN MCCB
to “OFF”.
②
Examine if there are neither a problem nor a trouble in the equipment of the load.
③
Press the bypass breaker on the back panel of the UPS.
④
Set
MAIN MCCB
to “ON”, and then start the UPS by pressing
and holding it for 1 second.
For details about UPS startup, see §11.1 “UPS Startup (Normal Operation)”.
③
Reset
BYPASS OC
.
This completes the bypass breaker reset.
Tripped Reset
If you reset the bypass breaker while the UPS is powered on, the “Red ALARM” indicator will remain
lit until you turn the UPS off. Always turn the UPS off before resetting the bypass breaker.
Note
E
E
1
1
1
1
A
A
2
2
0
0
2
2
BATT
EXT.
E
E
1
1
1
1
A
A
3
3
0
0
2
2
①
Set
MAIN MCCB
to “OFF”.
Press the
BYPASS OC
breaker firmly to
reset.
①
Set
MAIN MCCB
to “OFF”.
IN
PU
T
BATT
EXT.
MAIN SW
E
E
1
1
1
1
A
A
1
1
0
0
2
2
①
Set
MAIN SW
to “OFF”.
