Parts Replacement - Toshiba 4200FA User Manual

7.3

Parts Replacement

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.
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.
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.
4) Cooling fan: Replace once every 3 years.
TOSHIBA
61
Necessary corrective