Hitachi WJ C1 Series

Chapter 16 Maintenance and Inspection
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Chapter 16 Maintenance and Inspection
This chapter describes how to perform maintenance and inspection on the product.
When performing each work, carefully read "Chapter 1 Safety Instructions/Risks" and the corresponding
chapters, and pay attention to safety.
16.1 Cautions for Maintenance and Inspection ................................................................................ 16-1-1
16.1.1 Daily Inspection ...................................................................................................................... 16-1-2
16.1.2 Cleaning ................................................................................................................................... 16-1-2
16.1.3 Periodic Inspection ................................................................................................................ 16-1-2
16.1.4 Periodic Function Test for Safety Function (STO) ............................................................. 16-1-2
16.2 Daily Inspection and Periodic Inspection ................................................................................. 16-2-1
16.2.1 Inverter Inspection List .......................................................................................................... 16-2-1
16.2.2 Megger® Test ......................................................................................................................... 16-2-3
16.2.3 Withstand Voltage Test ......................................................................................................... 16-2-3
16.2.4 Checking the Inverter and Converter Section ................................................................... 16-2-4
16.2.5 Smoothing Capacitor Life Curve .......................................................................................... 16-2-5
16.2.6 Life Warning Output ............................................................................................................... 16-2-5
16.2.7 Measurement Methods of I/O Voltage, Current, and Power ........................................... 16-2-6
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