14-1
14. Maintenance and inspection
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To prevent a failure due to the influence of the operating environment such as temperature, humid-
ity, dust, or vibration, or to aging or lives of the used parts, perform daily inspection and periodical
inspection.
The electronic parts are vulnerable to heat. Therefore, be sure to install the inverter in a well-ventilated,
dust-free environment with low ambient temperature.
The purpose of the daily inspection is to maintain the environment and to find any sign of abnormal opera-
tion before a failure occurs by recording and comparing the operation data.
14. 1. 1 Checkpoints for daily inspection
Perform daily inspection according to the following items and table:
• Are any abnormalities found in the installation environment?
• Does the cooling system have any problems?
• Is unusual vibration or sound found?
• Is abnormal overheat or discoloration found?
• Is an unusual smell found?
• Is adhesion or accumulation of foreign substances (conductive substances) found?
• Is unusual vibration, sound, or overheat found in the motor?
14
Maintenance and inspection
WARNING
Mandatory
action
• Perform daily inspection and periodic inspection on equipment.
• Before inspection, perform the following steps.
14. 1 Daily inspection and cleaning
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