PowerWalker VI 650SE LCD Guide De Démarrage Rapide page 12

8. Maintenance
I. General
The UPS is virtually maintenance free: take care of proper environmental conditions and keep air inlets-
outlets free of dust.
II. Fuses
If the AC input fuse is defect, be sure it is replaced by a compatible fuse from 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
Read all safety rules before replacing the battery.
When replacing the batteries, use batteries with exactly same specifications.
9. Trouble Shooting
Symptom
No LED display on the
front panel.
Alarm buzzer beeps
continuously when AC
supply is normal.
When power failure,
back-up time is shorten.
Mains normal but LED is
flashing.
If any abnormal situations occur that are not listed above, please call service people immediately.
10
Possible Cause
1. Battery weak.
2. Battery defect.
3. Power switch is not pressed.
Overload of the UPS.
1. Overload of the UPS.
2. Battery voltage is too low.
3. Battery defect due to high temperature
operation environment, or improper
operation to battery.
Power cord is loose.
Remedy
1. Charge battery up to 8 hours.
2. Replace with the same type of
battery.
3. Press the power switch again.
Verify that the load matches the UPS
capability specified in the specs.
1. Remove some non-critical load.
2. Charge battery 8 hours or more.
3. Replace with the same type of battery.
Reconnect the power cord properly.
EN