Outdoor Surface Boxes are exposed to wind, sun, rain, and other elements year-round, making them prone to rust, water leakage, and moisture damage to internal components. Daily maintenance mainly focuses on three key points: "preventing damage, preventing leakage, and ensuring safety.

1. Appearance Inspection and Cleaning

First, check if there's any rust, deformation, or holes on the outside of the box. For metal boxes, quickly sand off any rust spots and apply anti-rust paint. For plastic boxes, check for cracks, aging, or discoloration. Then inspect the door seal—if it's lost elasticity or fallen off, replace it immediately. Wipe off dust, oil, and sediment from the box surface with a damp cloth. Never use a high-pressure water gun to directly spray the box seams, as this could cause water to seep in.

2. Sealing and Waterproofing

Close and lock the box door, then use a spray bottle to spray water on the box seams, door edges, and cable entry/exit ports. Open the door again to check for water seepage inside. If the sealing rings or plugs at the cable entry/exit ports are loose or aging, seal them tightly with waterproof sealant, making sure there are no gaps. Place a bag of silica gel desiccant inside the box and replace it every quarter. For humid areas, you can add a small dehumidifier. On sunny, dry days, open the box door to ventilate, then close and lock it tightly immediately after ventilation.

3. Internal Components and Wiring

Open the box and check internal components such as terminal blocks, instruments, and switches for looseness, oxidation, or burnout. Tighten any loose screws and wipe off oxidized areas with alcohol. Replace any damaged, easily-worn parts like indicator lights and fuses with ones of the same specification. Organize the internal wiring to avoid tangling. Replace any missing cable clips. If the cable insulation is damaged, wrap it with insulating tape or replace the cable entirely.

4. Lock and Door Mechanism

Apply a small amount of lubricating oil or graphite powder to the box lock cylinder to prevent rust and jamming. Check if the lock catch and door hinges are secure. Straighten or replace any deformed parts to ensure the door opens and closes smoothly and latches tightly.

5. Special Attention for Specific Environments

Add a sunshade to boxes in direct sunlight areas; install dust filters at cable entry/exit ports in sandy and windy areas, and clean the filters monthly; add an insulation layer to boxes in low-temperature freezing areas, and check if internal components can withstand low temperatures.

6. Maintenance Reminders

Before opening the box, confirm there's no electricity inside. For electrical component maintenance, always cut off the power first and hang a warning sign. Do not scratch the box sealing surface with sharp tools, as this could cause water leakage. Record the maintenance time, inspected items, and any troubleshooting done each time for future reference.