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7.1.1 Check Electrical Connections
Check all the cable connections as a regular maintenance inspection
every 6 months or once a year.
1.）Check the cable connections. If loose, please tight all the cables
referring to “3.3 Electrical installation”.
2.）Check for cable damage, especially whether the cable surface is
scratched or smooth. Repair or replace the cables if necessary.
7.1.2 Clean the Air Vent Filter
The inverter can become hot during normal operation. CPS
SCH100/125KTL-DO/US-600 and SCH 100KTL-DO/US-480 inverters use
built in cooling fans to provide sufficient air flow to help in heat dissipation.
Check the air vent regularly to make sure it is not blocked and clean
the vent with soft brush or vacuum cleaner if necessary.
7.1.3 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. Attention: please disconnect the
AC & DC power when replacing the fans.
Please refer to Figure 7-1 for replacing the cooling fans.
(1) Use a No.2 Phillips head screwdriver to take off the 12 screws on the
fan tray. (Figure 7-1.1)
(2) Disconnect the waterproof cable connector from cooling fan. (Figure 7-
1.2)
(3) Use a No.2 Phillips head screwdriver to remove the screws. (Figure 7-
1.3)
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