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Daily care:

• Regularly check whether there are signs of pests and rodents in the distribution cabinet, and take appropriate trapping measures to prevent pests and rodents from damaging electrical equipment.
• Confirm whether all warning signs and maintenance signs are placed in the correct position, and whether emergency tools and lamps are complete and normal.
• Check whether the cable connectors are hot and discolored, whether the grounding wires are rusted, and ensure that the cable connections are firm and not overheated.
• Check whether the capacitor casing in the capacitor cabinet is in good condition, whether there is leakage or expansion, and whether the indicator light is in good condition.
• Clean the inside and outside of the distribution cabinet regularly to remove dust and dirt, and maintain good ventilation and heat dissipation conditions.

First level maintenance:

• Check whether the busbar and its lower lead are firm, whether the secondary circuit wiring is firm, and whether the fuse is intact.
• When the air switch is disconnected without capacitor, test the action of the capacitor controller, and adjust the overvoltage protection, undercurrent protection, and switching threshold.
• All indicator lights should be intact, check whether the controller switch position is normal, the operation should be normal, and whether the manual debugging mechanical interlocking part is reliable.
• Check whether the fasteners of each soft starter and inverter are loose.

Secondary maintenance:

• Check whether the drawer switch can be pushed in or out flexibly, whether its mechanical locking is reliable, and whether the contactor contacts are in good condition.
• Check whether the elastic force of each blade in the circuit breaker is normal and whether the arc extinguishing device is intact.
• Check whether the wiring nuts of each cable head are tightened to ensure the stability of the cable connection.
• After disconnecting the main switches of the power receiving cabinet and the contact cabinet, check whether the secondary wiring head has good contact and is tightened without looseness.

Safety Precautions:

• Before maintenance, the power supply must be cut off to ensure that the voltage on the power distribution cabinet has been eliminated.
• Operators should wear anti-static clothing, insulating shoes, and insulating gloves for operation.
• During maintenance, strictly abide by safety regulations and recommendations. If necessary, contact professionals for repairs.