Chapter 8 Troubleshooting and Maintenance
Shenzhen Hpmont Technology Co., Ltd.
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HD3N-L Series User Manual V1.0
8.3
Maintenance
Factors such as ambient temperature, humidity, PH, dust, oscillation, internal component aging, wear
and tear will give rise to the occurrence of potential faults. Therefore, it is necessary to conduct daily
maintenance to HD3N-L.
•
If HD3N-L has been transported for a long distance, check whether the components of HD3N-L are
complete and the screws are well tightened.
•
Periodically clean the dust inside HD3N-L and check whether the screws are loose.
•
Only a trained and qualified professional person can maintain HD3N-L.
•
Maintenance personnel should take off all metal jewellery before carrying out maintenance or internal
measurements in the controller. Suitable clothes and tools must be used.
•
High voltage exists when HD3N-L is powered up or running.
•
Checking and maintaining can only be done after AC power of HD3N-L is cut off and wait for at least 10 minutes.
The cover maintenance can only be done after ensured that the charge indicator inside the controller and the
indicators on the keypad are off and the voltage between power terminals (+) and (-) is below 36V.
•
For HD3N-L with more than 2 years storage, please use voltage regulator to increase the input voltage gradually.
•
Do not leave metal parts like screws or pads inside the controller.
•
Do not make modification on the inside of controller without instruction from the supplier.
•
There are IC components inside the controller, which are sensitive to static electricity. Directly touch the
components on the PCB board is forbidden.
Daily Maintenance
HD3N-L must be operated in specified environment (refer to section3.2, on page9).
Therefore maintain it according to table below. To prolong the lifetime of HD3N-L, keep good running
environment, record the daily run data and detect any abnormal behavior.
Table 8-2 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-L
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
Danger
Warning
