7. Maintenance
I. General
The UPS is virtually maintenance free: maintain proper environmental conditions and keep air inlets-outlets
free of obstructions and dust.
II. Fuses
If the UPS is overloaded and the AC input fuse blows, be sure it is replaced by a compatible fuse of the same
make and type.
Never short circuit batteries. When working with batteries, remove watches, rings and other metal objects,
and only use insulated tools
.
III. Batteries
If replacing the batteries, use batteries with exactly the same specifications.
8. Trouble Shooting
Symptom
Possible Cause
Remedy
No LED display on the
front panel.
1. Battery weak.
1. Charge battery up to 8 hours.
2. Battery defect.
2. Replace with the same type of
battery.
3. No Utility Power.
3. Press the power switch again.
Alarm buzzer beeps
continuously when AC
supply is normal.
Overload of the UPS.
Verify that the load matches the UPS
capability specified in the specs. Remove
some of the load
When power failure,
back-up time is shorter
than normal.
1. UPS Overloaded
1. Remove some non-critical load.
2. Battery weak.
2. Charge battery up to 8 hours.
3. Battery weak due to age, high
temperature, or environment,.
3. Replace with the same type of battery.
Mains normal but LED is
flashing.
Power cord is loose.
Reconnect the power cord properly.
If any abnormal situations occur that are not listed above, please call service people immediately.
Read all safety rules before attempting to replace the battery.
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