Powertronix Quasar Service Manual page 86

Chapter 7 - Troubleshooting
Fault Identification
LCD MESSAGE
EMERGENCY POWER The front panel EMERGENCY
OFF (+INVERTER OFF push button or the External
+ STATIC SWITCH Emergency Power Off circuit has
FAILURE) been activated.
This alarm is activated if the
BATTERY BREAKER
Battery is not connected or if the
OFF
Battery Test Fails.
BATTERY CHARGER This alarm is activated if a failure in
FAILURE the Battery Charger is detected.
This alarm is activated by the
HIGH BATTERY
detection of a High Battery
VOLTAGE LEVEL
Voltage/Charger Output.
This alarm is activated when the
battery voltage is below the `end
of discharge' level (set on the
END DISCHARGE Auxiliary DC-DC Power Supply
BATTERY VOLTAGE Board).
This alarm is Normally seen
during an extended mains
Failure.
7 - 10
CAUSE
Check the integrity of the internal
EPO push button contact (Normally
open) and the external EPO push
button circuit (at the customer
connection terminal block, Normally
closed) to ensure alarm is genuine.
Check the battery fuses in the
INTERNAL BATTERY fused breaker
and check Battery for open or short
circuit cell.
Check integrity of Battery Fuses
(F1-F5).
Check IGBT Q1 on the battery
charger board
Check fuses F1-F5 on Battery
Charger Board..
Check IGBT Q1 on the Battery
Charger Board
Check the level of the battery
voltage.
If level is low check function of the
Battery Charger Board.
Service Manual
CHECKS
If the alarm is genuine then check the
reason for the EPO circuit activation
and rectify as necessary.
Restart UPS.
Replace defective fuses or battery.
Change battery charger if
necessary.
Change battery charger if
necessary.
If the alarm is not genuine
(i.e. Battery level is correct) replace
the auxiliary DC-DC power supply
board.
3x3 UPS Troubleshooting
SOLUTIONS
Issue 2 - November 2001