CHINT NVF5-3.7/TS4-B - Routine Maintenance; Regular Maintenance

NVF5 Series User Manual Chapter 8 Maintenance
5. Check whether the DC Bus filter capacitors discolor, Peculiar smell, bubbling,
leakage, etc.
8.3 Routine Maintenance
The inverter must run in the standard environment. If some unexpected situations
occur during operation, the user should follow the instructions in the table below to do
routine maintenance job. The good method to extend the life of the inverter is to maintain a
good running environment, record the daily operation data, and detect the exception as
early as possible.
Table 8.1 Routine Maintenance Table
Inspection
Object
Checking Essentials
Criteria
Content
Period
Method
Enviroment
1
．
Temperature,
humidity
Any
time
1
．
Thermometer,
hygrometer
1
．（
-10
～＋
45
）
℃
，
（
45
～
50
）
℃
dreating
use
2
．
Dust, water
and dripping
2
．
Visual
inspection
2
．
No water leakage
imprint
3
．
Gas 3
．
Smell 3
．
No bad smell
Inverter
1
．
Vibration,Heat
Any
time
1
．
Enclosure
Touch
1
．
Stable
vibration,reasonable
fan temperature
2
．
Noise 2
．
Auditory sense 2
．
No abnormal sound
Motor
1
．
Heat
Any
time
1
．
Hand Touch 1
．
No abnormal heat
2
．
Noise 2
．
Auditory
2
．
Uniform noise
Status
1
．
Output Current
Any
time
1
．
Ammeter
1
．
Within the range of
ratings
2
．
Output Voltage 2
．
Voltmeter
2
．
Within the range of
ratings
3
．
Internal
temperature
3
．
Thermometer
3
．
Temperature Rise
less than 35 K
8.4 Regular Maintenance
According to the using environment, the user can conduct a regular inspection for the
inverter every three months or six months.。
General inspection contents:
1．Whether screws of the I/O terminal are loose, tighten with a screwdriver;
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