Service And Maintenance - DAYLIFF SUNVERTER 4 Installation & Operating Manual

6. SERVICE AND MAINTENANCE

6.1 Routine Inspection and Maintenance
Sunverter 4 is affected by ambient temperature, humidity, dust, vibration and internal
device aging. To ensure long term operation a yearly inspection is recommended.
6.2 Requirement of Inspection and Maintenance
The inspection must be performed by a qualified technician.
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Ensure to disconnect power supply of the inverter before carrying out any repair.
•
Do not leave any metal objects inside the inverter, as they could cause a short
•
circuit or other damage.
Electric insulation test is already carried out on the inverter before leaving the
•
factory. If it is however necessary to conduct insulation test on the inverter, all the
input and output terminals must be reliably grounded. It is not advisable to conduct
insulation test on single terminal.
It is not advisable to use the megohmmeter to test the control circuit.
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When conducting insulation test on the motor, dismantle the connection between
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motor and inverter.
6.3 Main Points for Inspection and Maintenance
Inspect and maintain as per the table below.
Inspect Frequency Inspection
Routine Regular
Inspection
on Item Parameter
1. Temperature
Operating
2. Humidity
Environment
3. Dust, gas
1.Installation
Cooling
Environment
System
2. Radiator
1. Vibration,
Inverter
Temperature rise
Body
2. Noise
3. Wire, terminal
1. Vibration,
Motor Temperature rise
2. Noise
Input & Output 1. Input voltage
Parameter
2. Output current
Allowable Standard
1. Temperature<50 C
2. Humidity<90% No dew condensation.
3. No peculiar smell, flammable, explosive
gas
1. Installation environment with good
ventilation
2. Radiator air duct should not been blocked
1. Stable vibration, normal temperature of the
housing
2. No abnormal noise and peculiar smell
3. Fastening screws not loose
1. Steady running and normal temperature
2. No abnormal and non uniform noise
1. Input voltage in the specialized range
2. Output current should be below rated value
6 20 6 32
0