24
1.1-3 kVA - Ref.: IOMNETRTXX00-GB 00
10. MAINTENANCE
WARNING!
The UPS generates HAZARDOUS INTERNAL VOLTAGES. All maintenance operations should be carried out by
AUTHORIZED SERVICE ENGINEERS ONLY.
• The unit will operate to its maximum capability if kept powered up round the clock (24/7); this ensures that the batteries will always
be properly charged.
• If the appliance is to remain idle for any length of time, wait until the batteries are fully charged (connection to mains power supply
for 8 hours continuous) before shutting the UPS down.
• Recharge the batteries for a duration of 24 hours at least every 4 weeks during the time the unit remains idle.
10.1 Minor troubleshooting
WARNING!
If problems should persist or reoccur frequently after following the procedures indicated in this section, contact
the SOCOMEC UPS After Sales Service, providing a full description of the current difficulty
Problem
Possible cause
Solution
"UPS not powered up
(no alarm, no LEDs
alight)”
The ON/TEST button has not been pressed.
Press the ON/TEST button to switch the UPS on.
Shutdown due to flat battery and no mains
power.
Wait for mains power to be restored
Thermal-magnetic switch on the rear panel
has been tripped.
Reduce the load connected to the UPS, then reset
the thermal-magnetic switch.
Faulty UPS
Contact SOCOMEC UPS After Sales Service if the
solutions indicated above do not solve the problem.
UPS does not guar-
antee the expected
backup time.
UPS internal batteries not completely
charged.
Recharge the batteries for a minimum of 8 hours.
UPS in overload.
Disconnect non-essential loads.
Depleted batteries.
The batteries will degrade quickly if used fequently,
or in high operating temperatures. Should the batter-
ies have reached the end of their life cycle, contact
SOCOMEC UPS After Sales Service. Batteries must
be replaced even if the "Replace battery" LED is not lit.
Battery charge fault or other causes.
Contact SOCOMEC UPS After Sales Service
"Replace battery" LED
lit.
Batteries flat.
Charge the batteries for a minimum of 8 hours. If the
problem persists, contact SOCOMEC UPS After Sales
Service to have for battery replacement.
Faulty communication
between PC and UPS.
Wrong transmission speed.
Change the transmission speed and test again.
RS232 connection incorrect.
See "Communication" section of this manual.
Reconnect the UPS to the COM1/COM2 port of the PC.
USB connection incorrect.
Reconnect the UPS to the USB port of the PC.
UPS functions in
"Battery Mode" even
though a.c. mains is
connected and healthy.
Mains voltage not registering at UPS input.
Check the input voltage connection.
Thermal-magnetic switch on the rear panel
has been tripped.
Reduce the load connected to the UPS, then reset
the thermal-magnetic switch.
Input voltage too high, too low or distorted.
Have the mains voltage checked by a qualified electri-
cian.
Overtemperature.
Air intake fans and fan cowl may be
obstructed.
Select a well ventilated area in which to position the
UPS, allowing suitable dissipation of heat.
Ambient temperature is higher than 40 °C
(104 °F).
Position the UPS in a cooler area.
"Fault" LED lit and alarm
signal generated.
UPS faulty.
Contact SOCOMEC UPS After Sales Service.
"Overload" LED lit, with
continuous alarm signal.
Overload.
Disconnect non-essential loads.
