Shenzhen Hpmont Technology Co., Ltd. Chapter 8 Troubleshooting and Maintenance
HD09 Series User Manual V1.1 -59-
Periodical Maintenance
According to the environment, the user can inspect for each 3 - 6 months on the HD09 a regular
routine to eliminate the hidden dangers to ensure long-term high-performance equipment and stable
operation.
Check the contents:
• The control terminal screws are not loosened and, if loosened, use the available torque and the
appropriate screwdriver to tighten;
• Strong contact of power terminals, no overheating traces at copper or cable connections;
• Damage of power cable, control cable, especially surface in contact with the metal whether have
cutting traces;
• The nose of power cord and control signal line, insulation tape does not fall off or rupture;
• Clean the dust on the circuit board and duct, and better to use a vacuum cleaner.
Note:
1. Inverter factory has passed the pressure test, the user does not have to do the pressure test, or improper
test will damage the inverter.
2. When the motor is tested for insulation, the U / V / W terminal of the inverter must be disconnected and
the motor should be tested separately. Otherwise, the inverter will be damaged.
3. Long-term storage of the inverter must be carried out within 2 years of a power test. Use the regulator to
slowly raise the input voltage of the inverter to the rated value for at least 5 hours.
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