HLP-NV Series
HLP-NV Series
-
90
-
X. Maintenance, Fault Information and
Troubleshooting
Periodical maintenances and inspections will keep your inverter in its
normal state for long time.
1. Precautions about Inspection and Maintenance
● Be sure to turn off the power supply to the inverter
（
R. S. T
）
first
before the inspection and maintenance.
● After confirming the main circuit power supply has been turned off
and the display has disappeared, wait until the internal indicator
lamp for high voltage goes out before performing the inspection and
maintenance.
● During the inspection, do not pull out or wrongly distribute the internal
power supply, wires and cables. Otherwise it will cause malfunction or
damage to the inverter.
● Do not leave any screw or other part inside the inverter during the
installation, or it will result in the short circuit of circuit board.
● Keep the inverter clean, free from dust, oil mist and moisture after the
installation.
2. Periodical Inspection and Maintenance items
● Check whether the power supply voltage conforms to the rated voltage
of the inverter.
(Pay special attention to that whether there is any damage on the power
supply wires and the motor.)
● Check whether the wiring terminals and the connectors are tight
(Check whether the power supply wires and terminal connection wires
have any broken strand).
● Check whether there is dust, iron filings or corrosive fluid in the
inverter.
● Measuring the insulation impedance of the inverter is forbidden.
● Examine the output voltage, output current and output frequency of the
inverter.
(The measuring results should not have too big difference.)
● Check whether the ambient temperature of the inverter is between
-5
℃
and 40
℃
and whether the installation environment has good
ventilation.
● Check whether the humidity is kept between 5% and 90% (without
condensation).
