TOSHIBA
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8.0 Preventive and Scheduled Maintenance / Part Replacement
8.1
Preventive Maintenance
Toshiba's 4200 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 from the system. Schedule authorized Toshiba service centers to perform
internal parts inspections annually.
CAUTION
Before performing any maintenance the technician should be familiar
with and follow the important safety instructions located on pages 3, 6
and 7.
WARNING
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. Refer
to service manual.
8.2
Parts Replacement
The following list shows intervals for periodic maintenance and replacement of certain UPS
parts.
1) Batteries: VRLA batteries are maintenance free with respect to electrolyte only.
The charging voltage, temperature, performance and connection resistance must
be monitored periodically. Necessary corrective actions must be made in order
to assure safe reliable power is supplied by the UPS. The aforementioned 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.
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.
Semi-Annual maintenance
A. Repeat the quarterly checks.
B. Perform a 10-second high rate (e.g. 100 amp) load test 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).
E. Perform inter-battery connector resistance checks.
2) Aluminum electrolytic capacitors: Replace once every 5 years.
3) Fuses: Replace once every 7 years (see output fuse rating chart below).
4) Cooling fan: Replace once every 3 years.