Chapter 7
MAINTENANCE AND INSPECTION
This chapter describes the maintenance and inspection items of the inverter.
Contents
7.1
Inspection Interval ·································································································· 7-1
7.2 Daily Inspection ····································································································· 7-2
7.3 Periodic Inspection ································································································· 7-3
7.3.1 Periodic inspection 1--Before the inverter is powered ON or after it stops running········· 7-3
7.3.2 Periodic inspection 2--When the inverter is ON or it is running ································· 7-4
7.4 List of Periodic Replacement Parts ············································································ 7-5
7.4.1 Judgment on service life ·················································································· 7-6
[ 1 ] Measuring the capacitance of DC link bus capacitor in comparison with initial one at
shipment ······································································································ 7-7
[ 2 ] Measuring the capacitance of the DC link bus capacitor
under ordinary operating conditions ···································································· 7-8
[ 3 ] Early warning of lifetime alarm ·········································································· 7-8
7.5 Measurement of Electrical Amounts in Main Circuit ······················································· 7-9
7.6 Insulation Test ······································································································ 7-10
7.7 Inquiries about Product and Guarantee ······································································ 7-11
7.7.1 When making an inquiry ················································································· 7-11
7.7.2 Product warranty ··························································································· 7-11
[ 1 ] Free of charge warranty period and warranty range ·············································· 7-11
[ 2 ] Exclusion of liability for loss of opportunity, etc. ···················································· 7-12
[ 3 ] Repair period after production stop, spare parts supply period (holding period) ··········· 7-12
[ 4 ] Transfer rights ······························································································ 7-12
[ 5 ] Service contents ··························································································· 7-12
[ 6 ] Applicable scope of service ············································································· 7-12
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