9. TROUBLESHOOTING
Problem
The UPS is connected to the mains with
voltage nominal, though the device
shows no voltage in the mains and enters
o
ff
-line mode.
The UPS does not start.
When power supply drops, the UPS
immediately switches o
ff
.
Solution
There is over- or undervoltage in the mains. Switch o
ff
the PC and the UPS. Switch them on again after
voltage becomes normal.
The fuse has burned down. Replace it.
1. The battery is discharged. It is necessary to carry
out the whole cycle of battery charging.
2. The battery is out of order. It is necessary to
replace the battery.
Important! Note that battery operation time is limited to 3-20 minutes, if mains power supply
is cut off. During this time it is necessary to save all open documents and switch off the PC,
then the UPS should also be switched off.
8. BATTERY MAINTENANCE
Pro+ UPS series contains one or two maintenance-free sealed lead-acid batteries. High humidity,
too high or low temperature, frequent battery discharge reduce its durability. If battery has not
been operated for a long period of time, it also has negative impact on its durability. Therefore, it is
recommended to carry out the whole cycle of battery charging/discharging at least once per three
months.
Storage conditions
•
The UPS should be stored closed in vertical position in a dry and cool place with fully charged
storage battery.
•
Before placing the UPS in storage, charge it for 10 hours.
Warning! Do not operate the UPS in environment with operating temperature not corres-
ponding to value given in Technical Speci
fi
cations.
If none of the above methods can solve the problem, please seek professional advice at your
nearest service center. Never attempt to repair the product yourself.
ENG
22
Uninterruptible
Power Supply
