TOSHIBA
Protection Item Memory error (EERR)
Internal overheat
(OH)
DC circuit
overvoltage (DCOV)
DC circuit overcurrent
(DCOC)
LCD Message
MAIN EEPROM ERROR OVERHEAT; INTERNAL DC OVERVOLTAGE DC OVERCURRENT
Cause
Control board chip error Fan failure; high ambient Chopper malfunction Inverter / chopper fault
Operation Mode
after Fault
Start is inhibited Bypass operation; chopper and inverter are stopped
Audible Alarm
Yes; continuous buzzer
Visible Alarm
RED fault lamp “ON”
Relay Contact
Fault relay closed; bypass relay closed
Alarm
Auto-Retransfer
NO
8.0 Start-up/Scheduled Maintenance/Part Replacement
8.1 Start-up
The startup of the UPS equipment is broken up in several steps. These steps are as
follows:
1. Initial Condition: This is where the service technician checks the unit for physical
damage and verifies the installation of the UPS (electrically).
2. Static Checks: This step verifies the proper settings within the UPS logic.
3. Wiring Check: The wiring to (power cables) and from (control wires) the battery
cabinet.
4. Main Voltage Check: The input voltages are checked to verify they are within the
range.
5. Energizing the UPS: This step begins the internal self-checks within the processor
logic.
6. Output Voltage Check: The output voltages are checked to verify they are within
range.
7. EPO (Emergency Power Off): The EPO is operated to verify its operation in case
of an emergency.
8. Load Testing: Performed if load is available.
9. Generator Testing: Performed if Generator is available.
10. Internal/External Maintenance Bypass: This verifies the proper operation of the
Maintenance Bypass.
8.2 Preventive Maintenance
The TOSHIBA 4200FA Uninterruptible Power Systems have been designed to provide no
years of trouble-free operation requiring a minimum of preventive maintenance.
The best preventive measure that the UPS user can take is to keep the area around the
unit, particularly the air inlet vents, clean and free of moisture and dust accumulations.
Schedule authorized TOSHIBA service centers to perform an internal parts inspection
semi-annually.
CAUTION
Before performing any maintenance the technician should be familiar
with and follow the important safety instructions within this manual.
Proper maintenance of the battery system of this unit by a qualified service
technician is essential to the safety and reliability of your UPS system.
Schedule authorized TOSHIBA service centers to perform internal parts
inspections semi-annually
.
WARNING
4200FA CT/XT User’s Manual 61
