6-1 Inspection and Maintenance 6 Inspection and Maintenance *1. The life of the smoothing capacitor depends on ambient temperatures. Refer to "Appendix-2 Product Life Curve" for the replacement reference. *2. The life of the cooling fan varies depending on the environmental conditions, such as ambient temperature and/or dust. Check the operation through daily inspections. *3. The replacement reference (year/cycle) or " Appendix-2 Product Life Curve " is based on the expected design life, which is not guaranteed.
6-4 Inspection part Inspection item Inspection point Inspection period Inspection method Criteria Meter Daily Periodic 1 year 2 years Main circuit General Check that any parts which may need tightening are secure. { Tighten securely. No faults Check that no part has indications of overheating. { Visual inspection No faults Connection conductor and wire Check that there is no distortion with the conductor. { Visual inspection No faults Check that there is no tearing in the wire coverings. { Terminal block Check that there is no damage. { Visual inspection No faults Inverter unit Converter unit (including the resistor) Check the resistance between the terminals.
{ Disconnect the wiring of the Inverter main circuit terminal block and measure the resistance levels between terminals R/L1, S/L2, T/L3 and P/+2, N/-, and between U/T1, V/T2, W/T3 and P/+2, N/- in the range of tester × 1 Ω. Refer to "Checking the Inverter and Converter". Inverter unit replacement reference Start/Stop: Cycle 106 *3 Analog tester Smoothing capacitor Check that there is no liquid leakage. { Visual inspection No faults Reference of the replacement period: 10 years *2 *3 Capacity meter Check that the safety valve has not come out and that there are no bulges. { Relay Check that there is no abnormal sound during operation.
{ Acoustic inspection No faults Check that there is no rough surface on the contact. { Visual inspection No faults