IV352 Rev.02
Date Issue:
2012-10-27
Page 130 di 232 + FR
8. Preventative Maintenance
The following regular maintenances may help to ensure the PV Inverter’s operation with optimal
performance.
8.1. Step of Checking and Maintenance
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Check if the fan grill cover is covered with debris or dust and clean the fan if necessary
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Check if the heat sink is covered by dust or blocked by objects which might affect the heat
dissipation
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Check if there’s corrosion, especially at connecting points
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Check if the wire connections are well-fixed
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Wipe clean the surface of PV array to obtain better efficiency
Hot Surface:
The Inverter and peripherals can be hot after operation. Maintenance shall be performed 10
minutes after the DC and AC power are both switched off.
Caution:
Before cleaning PV array or Inverter, be sure to switch off AC power and make sure that “No
Utility” message is shown on LCD. Cleaning shall be limited to the exterior surface only.
Caution:
To avoid risk of electric shock, both AC and DC power shall be switched off whenever
personnel needs to contact PV array under any circumstances.
Warning:
Whenever there is a need to disconnect DC and AC power. Do NOT disconnect DC cables
while the Inverter is still feeding power to the grid. And please switch off AC circuit breaker
before disconnecting DC cables.
8.2. Cleaning and Replacement of External Fan
(Note: This section is only applicable for models with external fan)
The following steps shall be followed in order to remove the external fan when there is a need for
cleaning or replacement:
(1) Disconnect both AC and DC power.
(2) Unscrew the four screws as marked below.
