Toshiba 4200FA CT/XT User Manual

 
 
 

 

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. 

8)  

9) 

 

 

 

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. 
 
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). 

 

2) Aluminum 

electrolytic 

capacitors: Replace once every 5 years. 

 

3)  Fuses:  Replace once every 7 years. 

 

4)  Cooling fan: Replace once every 3 years. 

 
 

 

 

 

4200FA CT/XT User’s Manual 

 

 

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