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FUSE REPLACEMENT PROCEDURES
CAUTION: Before changing the input fuse, turn off the UPS, and unplug the
supply lead from the AC input supply and from the UPS. Replace the fuse with
the same type and rating.
Insert flat blade
screwdriver into slot
and turn fuse holder
to remove / install
Fuse Holder
Input Fuse
Remove
Install
1. Remove the fuse holder by inserting a flat blade screwdriver into the slot and
turning to remove as indicated in the figure above.
2. Remove the input fuse.
3. Locate the spare input fuse that is included with the UPS.
4. Insert the spare fuse into the fuse holder, and reinstall assembly into the
UPS. Using the screwdriver, rotate clockwise until fuse holder locks into
position.
5. Reconnect the input power lead to the UPS, and the input power lead to the
input AC supply.
6. Restart the UPS. The UPS is ready for normal operation.
NOTE: For 1500 VA, 2000 VA, and 3000 VA units, reset circuit protector.
AUDIBLE ALARM CONDITIONS
CONDITION
ALARM
Battery mode
(utility failure)
One short beep every ten seconds; more
than two minutes of run time remaining
Low battery
Two short beeps every five seconds; less
than two minutes of run time remaining
Output overload (bypass)
One short beep every half second
Over temperature (bypass)
One second beep every four seconds
DC Bus overvoltage (bypass)
One second beep every four seconds
Control power supply failure (bypass)
One second beep every four seconds
PFC failure (bypass)
One second beep every four seconds
Inverter failure
One second beep every four seconds
Battery Test failure
Two second beep every minute
