Specification of excellent controller
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15. Model Description
16. 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
polarization, 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 LCD 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 lighting arrester is in good condition. Replace a new
one in time to avoid damaging of the controller and even other equipments.
Warning
Risk of electric shock! Make sure all the power is turned off before above
operations, and then follow the corresponding inspections and operations.
