Shihlin electric SL3 Series, Руководство пользователя

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Inspection item
INSPECTION AND MAINTENANCE 155
6. INSPECTION AND MAINTENANCE
6.1 Inspection item
6.1.1 Daily inspection item

Inverter is mainly composed of semiconductor components. In order to prevent faults caused by influence of
environment such as temperature, humidity, dust and vibration, or aging and service life of used parts, users must
do daily inspections
1. Whether the surrounding environment for installation is normal (temperature, humidity, dust density around
inverter).
2. Whether the power supply voltage is normal (whether the three-phase voltage between terminals R/L1, S/L2
and T/L3 is normal).
3. Whether the wirings are firm (whether the external wirings of the main circuit terminal and the control board
terminal are firm).
4. Whether the cooling system is normal (whether there is abnormal sound at the fan operation and whether the
connecting wire is firm).
5. Whether the indicator light is normal (such as LED indicator on control board, LED indicator on keypad and LED
on keypad screen).
6. Whether the motor is running as expected.
7. Whether there is abnormal vibration, sound or smell at the motor operation.
8 Whether there is liquid leakage in the filter capacitor on the capacitor board.
Pay attention to safety during inspection!
6.1.2 Replacement parts

Inverter is composed of many electronic components such as semiconductor components.

Due to the composition or physical characteristics, the following components will age within a certain period of time,
thus reducing the inverter performance and even causing faults. Therefore, it is necessary to replace them on a
regular basis.

Use lifetime detection function as a guidance of parts replacement.
Part name Estimated lifespan Description
Cooling fan 2 years
For the axle of a fan, the standard lifetime is about 10 – 35 thousand hours. If fan
operates 24 hours per day, should be replaced every 2 years.
Capacitor 5 years
Capacitor is an electrolytic capacitor that deteriorates with time. The deterioration
level depends on ambient conditions. Generally, it should be replaced every 5
years.
Relay --- If bad contact occurs, please replace it immediately.
Note: 1. Please send the inverters to the factory for replacement.
2. For the replacement of cooling fan, please refer to section 3.8.
Caution