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96 4200FA Installation and Operation Manual
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.
WARNING
Proper maintenance of the battery system of this unit by factory authorized
personnel is essential to the safety and reliability of your UPS system.
Schedule authorized TOSHIBA service centers to perform internal parts
inspections semi-annually.
Parts Replacement 12.3
The following list shows intervals for periodic maintenance and replacement of certain UPS parts.
1) Batteries: VRLA (Valve Regulated Lead Acid) batteries do not require the adding of water or
electrolyte. The charging voltage, temperature, performance and connection resistance must be
monitored periodically.
Necessary corrective maintenance must be made in order to assure the UPS supplies safe
reliable power. These items affect the life of batteries, so replacement should be once every 3 to
5 years as a minimum.
All of the batteries must be replaced at the same time to eliminate the possibility of multiple
failures due to resistances of the batteries.
2) UPS - Recommended Quarterly Maintenance
A. Visual Checks
1) Leakage
2) Corrosion on positive terminal
B. Check battery temperature at the negative terminal
C. Measure and record the system float charging voltage.
D. Measure and record the individual unit’s float charging voltage.
3) Recommended Semi-Annual maintenance
A. Repeat the quarterly checks.
B. Perform impedance checks on the individual batteries.
C. Optionally test for the purpose of trending the battery over time.
D. Re-torque all inter-battery connecting hardware (if applicable).
4) Aluminum electrolytic capacitors: Replace once every 5 years.
5) Fuses: Replace once every 7 years
6) Cooling fan: Replace once every 3 years