Shenzhen Hpmont Technology Co., Ltd.
Chapter 7 Troubleshooting and Maintenance
HD3N Series User Manual V1.1
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Daily Maintenance
HD3N must be operated in the specified environment, refer to section 3.2, on page 11.
Therefore maintain it according to Table 7-2. To prolong the lifetime of HD5L, keep good running
environment, record the daily run data and detect any abnormal behavior.
Table 7-2 Daily maintenance
Items
Content
Criteria
Running
environment
Temperature and humidity
-10 - +40
℃
, derating at 40 - 50
℃
Less than 95%RH, non-condensing
Dust and water dripping
No conductive dust accumulating, no water
dripping
Gas
No strange smell
HD3N
Oscillation and heating
Stable oscillation and proper temperature
Noise
No abnormal sound
Motor
Heating
No overheat
Noise
Low and regular noise
Running status
parameters
Output current
Within rated range
Output voltage
Within rated range
Periodical Maintenance
Customer should check HD3N in every 3 to 6 months according to the actual environment so as to
avoid hidden problems and make sure HD3N runs well for a long time.
General Inspection:
•
Check whether the screws of control terminals are loose. If so, tighten them with a screw driver;
•
Check whether the main circuit terminals are properly connected; whether the copper bar and
mains cables are overheated;
•
Check whether the power cables and control cables are damaged, check especially for any wear on
the cable tube;
•
Check whether the insulating tapes around the cable lugs are stripped, and for signs of overheating
near terminations;
•
Clean the dust on PCBs and air ducts with a vacuum cleaner.
Note:
1. Dielectric strength test of HD3N has already been conducted in the factory. Do not do the test again.
Otherwise, HD3N might be damaged.
2. If insulation test to the motor is necessary, it should be done after the input terminals U/V/W of motor
have been detached from HD3N. Otherwise, HD3Nwill be damaged.
3. For HD3N that have been stored for a long time, they must be powered up every 2 years. When supplying
AC power to HD3N, use a voltage regulator to gradually raise the input voltage to rated input voltage at
least 5 hours.
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