Chapter 7 Troubleshooting and Maintenance
Shenzhen Hpmont Technology Co., Ltd.
- 106 -
HD3N Series User Manual V1.1
Replacing Damaged Parts
The components that are easily damaged are: cooling fan and electrolytic capacitors of filters. Their
lifetime depends largely on their application environment and preservation. Users can decide the time
when the components should be replaced according to their service time.
Easily damaged
Cooling fan
Electrolytic capacitors
Life
60, 000 hours
50, 000 hours
Possible cause of
damages
Wear of the bearing, aging of the fan vanes
High ambient temperature, aging of
electrolyte and large pulse current induced by
rapid changing loads
Criteria
After the inverter is switched off, check if the
abnormal conditions such as crack existing on
fan vanes and other parts. When the inverter
is switched on, check if inverter running is
normal, and check if there is any abnormal
oscillation
Check if frequent overcurrent or overvoltage
failures occur during inverter start-up with
load. Check if there is any leakage of liquids.
Check if the safety valve protrudes. Measure
the static capacitance and insulation
resistance
Unwanted Controller Recycling
When disposing HD3N, pay attention to the following factors:
•
The capacitors may explode if they are burnt.
•
Poisonous gas may be generated when the plastic parts like front covers are burnt.
•
Disposing method: Dispose unwanted controllers as industrial waste.
