Chapter 9 Maintenance 47
EV3200 Door Control Inverter User Manual
Chapter 9 Maintenance
Lots of factors such as ambient temperature, humidity, acid/alkali substances, dust, vibration, internal component aging and
wearing may raise the chance of the occurrence of potential faults. Therefore, it is quite necessary to conduct daily checking
and periodical maintenance to the inverters that are operated or stored.
If the inverter is transported from a distant place, routine inspections such as integrity of components and tightening of screws
must be done before using the inverter.
During normal operation, clean the dust inside the inverter periodically, and check if the screws become loose.
If the inverter has not been used for a long time, it is recommended to energize it every six months for more than half an hour
to keep the internal electronic elements in good conditions.
For the drive that has been stored for more than two years, when supplying AC power to the drive, use a voltage regulator to
raise the input voltage to rated input voltage gradually, otherwise the drive may be damaged
During drive's operation, the voltage is very high. Misoperation may result in serious personal injuries.
Within a certain period of time after the power is cut off, dangerous high voltage still exsit inside the drive.
Maintenance of drive shall only be done by qualified, trained professionals.
Before maintenance, maintenance personnel must take off personal metal articles such as: watches, rings. Working uniforms
and tools used during the operation must satisfy insulation requirements to avoid electric shock.
Before check and maintenance, please confirm the following items first.
Otherwise, there is the hazard of electric shock:
The inverter has been switched off;
Use a volt-meter to test the voltage between terminals P(+) and P(-)and the voltage should be below 36V.
9.1 Daily Maintenance
Daily maintenance is required when using the inverter so as to ensure the good operating environment. Besides, the daily
operating data, parameter settings, parameter modification, etc. should be recorded, and filed.
Through daily maintenance and checking, various abnormal phenomena and the reasons for them can be found in time so as
to eliminate the potential faults, ensure the normal operation of the inverter and prolong the inverter's life.
Refer to Table 9-1 for daily checking items.
Table 9-1 Daily maintenance and check items
Check guide
Check item
Check sub-item
Period
Check method
Criteria for judgment
Operating
environment
1) Temperature,
humidity
2) Dust, water and drip
3) Gas
Anytime
1)Thermometer, humidiometer
2) Visual inspection;
3) Visual inspection and smelling
1) Temperature should be lower than 40°C,
derate the inverter otherwise; the humidity should
meet specifications
2) No dust accummulation, no dripping, no
condensation
3) No abnormal color or smell
Inverter
1) Vibration
2) heat
3) Noise
Anytime
1) Visual inspection
2) Thermometer, visual inspection
3) Listening
1) Stable operation, no vibration
2) Proper ventilation and temperature
3) No abnormal noise
Motor
1) Vibration
2) heat
3) Noise
Anytime
1) Visual inspection, listening
2) Thermometer
3) Listening
1) No abnormal vibration or abnormal noise
2) Normal temperature
3) No abnormal noise
Operating
parameter
1) Input voltage
2) Output voltage
3) Output current
4) Internal temperature
Anytime
1) Voltmeter
2) Voltmeter
3) Ammeter
4) Thermometer
1) Within specifications
2) Within specifications
3) Within specifications
4) Temperature rise less than 40°C
