8.1.2 Clean the Air Vent Grate
The inverter can become hot during normal operation. It uses built in
cooling fans to provide sufficient air flow and help in heat dissipation.
Check the air vent grate regularly to make sure it is not blocked. Clean
the grate with a soft brush or vacuum cleaner attachment if necessary.
The frequency of this cleaning depends on the installation environment.
8.1.3 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. Please refer to Figure 7-1 for
replacing the cooling fans.
1. Use a No. 2 Phillips head screwdriver to remove the 10 screws on
the fan tray (6 screws on the upper fan tray, and 4 screws on the
lower fan tray).
2. Disconnect the waterproof cable connector from the cooling fan.
3. Use a No. 2 Phillips head screwdriver to remove the screws. Each
fan is attached to the fan tray with 4 screws.
4. Attached the new cooling fans on the fan tray and screw into place.
Fasten the cable on the fan tray with cable ties.
5. Torque value: 0.8-1N.m (7.1-8.9 in-lbs)
6. Install the assembled fan tray back on the inverter and secure with
the original screws.
7. Torque value: 1.2N.m (10.6in-lbs)
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