E6581381
1) Cooling fan
The fan, which cools down
2)Smoothing capacitor
•Main circuit
The smoothing capacitors applied to this inverter in the main circuit DC section are film type capacitors. Those life time in design value is 15 years, but it is recommended to replace them after it is used for about 10 years under normal conditions. Since the smoothing capacitors are mounted on a printed circuit board, it needs to be replaced together with the circuit board.
•Control circuit
The smoothing aluminum electrolytic capacitor degrades in performance because of ripple current, etc. The life time in design value is 15 years, but it is recommended to replace them after it is used for about 10 years under normal conditions. Since the smoothing capacitors are mounted on a printed circuit board, it needs to be replaced together with the circuit board.
<Criteria for appearance check>
•Absence of liquid leak
•Absence of case dampaged
Note: The operation time is helpful for roughly determining the time of replacement. For the replacement of parts, contact your nearest Toshiba inverter distributor. For safety’s sake, never replace any part on your own. (Parts replacement alarms can be known by monitor and alarm output, if it is set.
⇒See section 6.17.14.
■Standard replacement cycles of principal parts
As guides, the table below lists part replacement cycles that were estimated based on the assumption that the inverter would be used in a normal use environment under normal conditions (ambient temperature, ventilation conditions, and energizing time). The replacement cycle of each part does not mean its service life but the number of years over which its failure rate does not increase significantly.
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| Part name | Standard | Replacement mode and others |
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| replacement cycle |
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| Cooling fan | 2 to 3 years | Replacement with a new one |
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| Main circuit | 10 years | Replacement with a new one |
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| smoothing electrolytic |
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| capacitor |
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| Relay and contactor | - | Whether to replace or not depends on the check results |
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| Aluminum electrolytic | 10 years | Replace with a new circuit board |
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| capacitor mounted on |
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14 |
| a printed circuit board |
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| Note: The life of a part greatly varies depending on the environment of use. | |||
