Maintenance
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8
Maintenance
WARNING!
Before starting any product maintenance, the inverter should be
stopped running, the AC circuit breaker connected to the grid
and the PV input on the DC side shall be all disconnected, and
then wait at least 5 minutes before starting any operation.
These servicing instructions are for use by qualified personnel
only.
To reduce the risk of electrical shock, do not perform other
servicing other than those specified in the operation instructions
unless you are qualified to do so.
Check Electrical Connections
Check all the cable connections as a regular maintenance inspection
every 6 months or once a year.
Check the cable connections. If loose, please tight all the cables acc.
to section 4.5 Electrical Cable Connection.
Check for cable damage, especially whether the cable surface is
scratched or smooth. Repair or replace the cables if necessary.
Clean the Air Vent Filter
The inverter can become hot during normal operation. Inverter uses built-in
cooling fans to provide sufficient air flow to help in heat dissipation.
In order to ensure good ventilation and heat dissipation of the inverter, it is
necessary to check the air inlet and outlet regularly.
Ensure that air inlets and outlets are not blocked and clean the vent with soft
brush or vacuum cleaner if necessary.
Replace the Cooling Fans
If the internal temperature of the inverter is too high or abnormal noise is heard
assuming the air vent is not blocked and is clean, it may be necessary to replace
the external fans.
IMPORTANT!
Please disconnect the AC & DC power before replacing the fans.
Refer to Figure 8-1 for replacing the cooling fans.
1.
Use a No.2 Phillips head screwdriver to remove the 8 screws fixing the
fan tray.
