User manual

Chapter 8 Maintenance
198
Chapter 8 Maintenance
1. Terminals of the inverter have high-voltage .Never touch them, or it will cause
electric shock.
2. Replace all protective covers before powering up the inverter. When removing
the cover, be sure to shut off the power supply to the inverter.
3. Turn off the main circuit power supply and verify the charge LED has lit off
before performing maintenance or inspection.
4. Only authorized personnel should be permitted to perform maintenance,
inspections or parts replacement, or you will risk electric shock.
CAUTION
1． The keyboard PCB board, control PCB board and drive board employs CMOS
ICs.
Do not touch the CMOS elements.
2． Do not connect or disconnect wiring or connectors while power is applied to the
circuit.
3. Do not check signals during operation, or the equipment will be damaged.
8.1 Inspection and Maintenance
Inverter is a typical product, which combines the power electronics technology with the
microelectronics technology. Therefore, it double features with industrial equipments
and microelectronics equipments .The change of environment such as temperature.
Humidity, smog and internal components aging factor will cause kinds of faults to the
inverter. For long time secure operation, daily inspection and regular maintenance (at
least 3 or 6 months interval) is needed.
8.1.1 Daily Inspection
Before inverter running, please check below:
●Whether Sound and vibration of motor are abnormal
●Whether heating of inverter and motor are abnormal;
●Whether ambient temperature is too high;
●Whether load ammeter normal or not;
●Cooling fans are in normal operation;
●Brake resistors are with good insulation earth.
DANGER