Epsolar LS1024RD, Instruction Manual, Page: 24 / 30

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5.3 Maintenance
The following inspections and maintenance tasks are recommended at least
two times per year for best controller performance.

Check that the controller is securely mounted in a clean and dry
environment.

Check that the air flow and ventilation around the controller is not blocked.
Clear all dirt or fragments on the heat sink.

Check all the naked wires to make sure insulation is not damaged for
serious solarization, frictional wear, dryness, insects or rats etc. Maintain or
replace the wires if necessary.

Tighten all the terminals. Inspect for loose, broken, or burnt wire
connections.

Check and confirm that LED digital tube is consistent with required. Pay
attention to any troubleshooting or error indication .Take necessary
corrective action.

Confirm that all the system components are ground connected tightly and
correctly.

Confirm that all the terminals have no corrosion, insulation damaged, high
temperature or burnt/discolored sign, tighten terminal screws to the
suggested torque.

Inspect for dirt, insects and corrosion, and clear up.

Check and confirm that lightning arrester is in good condition. Replace a
new one in time to avoid damaging of the controller and even other
equipments.
Notes: Dangerous with electric shock!
Make sure that all power source of controller is cut
off when operate above processes, and then make
inspection or other operations
！