INVT CHV Series, Руководство по эксплуатации

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Maintenance
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8.2 Periodic Maintenance
Customer should check the drive every 3 months or 6 months according to the actual
environment
1. Check whether the screws of control terminals are loose. If so, tighten them with a
screwdriver;
2. Check whether the main circuit terminals are properly connected; whether the mains
cables are over heated;
3. Check whether the power cables and control cables are damaged, check especially
for any wear on the cable tube;
4. Check whether the insulating tapes around the cable lugs are stripped;
5. Clean the dust on PCBs and air ducts with a vacuum cleaner;
6. For drives that have been stored for a long time, it must be powered on every 2 years.
When supplying AC power to the drive, use a voltage regulator to raise the input voltage
to rated input voltage gradually. The drive should be powered for 5 hours without load.
7. Before performing insulation tests, all main circuit input/output terminals should be
short-circuited with conductors. Then proceed insulation test to the ground. Insulation
test of single main circuit terminal to ground is forbidden; otherwise the drive might be
damaged. Please use a 500V Mega-Ohm-Meter.
8. Before the insulation test of the motor, disconnect the motor from the drive to avoid
damaging it.
8.3 Replacement of wearing parts
Fans and electrolytic capacitors are wearing part, please make periodic replacement to
ensure long term, safety and failure-free operation. The replacement periods are as
follows:
◆
Fan: Must be replaced when using up to 20,000 hours;
◆
Electrolytic Capacitor: Must be replaced when using up to 30,000~40, 000 hours.