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1600XP Series Installation and Operation Manual
UPS FAULT PROTECTION FUNCTIONS (CONT’D)
Protection Item Internal Overheat
DC Circuit
Overvoltage
DC Circuit
Overcurrent
LCD Message OVERHEAT DC-OV DC-OC
Cause
Fan failure;
High ambient temperature
Chopper malfunction Inverter/chopper fault
Operation Mode
After Fault
Shutdown – No output
Bypass operation – Chopper and inverter are stopped
Inverter OL – Transfer to bypass
Audible Alarm Yes – Continuous buzzer
Visible Alarm Red Fault LED on
Relay Contact
Alarm
Fault relay closed
Bypass relay closed
Auto-retransfer No
24. Preventive Maintenance/Parts Replacement
24.1 Preventive Maintenance
Toshiba 1600XP Series of uninterruptible power systems have been designed to provide 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. If the atmosphere of the installation site
is very dusty, use a vacuum cleaner to periodically remove dust accumulations around and from the unit.
CAUTION
Only a qualied Toshiba representative should be allowed to perform any
routine maintenance or service on this equipment other than those preventive
maintenance details which are described directly above this caution.
24.2 Cleaning the Touchscreen
The touchscreen display is covered with a protective Teon coating. It should be cleaned with a clean,
damp cotton cloth to avoid scratching the coating.