- 6  
 
INSPECTIONS AND MAINTENANCE 
 (cont’d) 
 
Parts to be Regularly Renewed 
 
To use the T300MVi for a maximum period of time, it is necessary to regularly renew (replace) 
components whose characteristics have deteriorated.  The table below shows the parts used for the inverter 
equipment whose regular renewal is recommended and their recommended renewal period. 
 
Parts to be Regularly Renewed 
Product name  Recommended 
renewal period 
Remarks 
Cooling fan 
 
3 years  Sooner if dust or dirt 
damages bearings 
Air filter  6 months  Can also be cleaned. 
Aluminum Electrolytic 
Capacitors 
On Circuit Boards 
7 years 
Contact Toshiba for 
replacement of these 
devices 
Oil-filled capacitor 
Main circuit 
20 years   
Control power supply   7 years   
Main circuit  7 years   Fuse 
Control circuit  7 years   
 
CAUTION