Cleaning the External Housing and Surfaces
Use dry compressed air or a high-power vacuum cleaner to remove loose dust from the housing and operating mechanism surfaces, taking care to prevent dust from entering the equipment's interior.
For stubborn stains, wipe with a soft cloth dampened with a non-corrosive cleaner, then immediately dry with a dry cloth to prevent water residue from causing rust or corrosion.
Simultaneously inspect the housing for cracks, deformation, or rust, and verify that sealing gaskets are intact to prevent future ingress of dust or moisture.
Specialized Cleaning of Insulating Components
Wipe loose dust directly from core insulating components-such as insulators, insulating pull rods, and insulating cylinders-using a clean, dry cloth.
For areas with heavy soiling, gently wipe with a cloth dampened with anhydrous alcohol; allow the equipment to sit for at least 15 minutes after wiping to ensure the alcohol has completely evaporated before returning the equipment to service.
Do not use wet cloths or standard detergents to clean insulating components, as this can reduce insulation resistance and lead to surface discharge.
Cleaning the Vacuum Interrupter
For interrupters with glass or ceramic housings, gently wipe dust from the outer surface using only a clean, dry cloth; disassembly of the interrupter unit itself is strictly prohibited.
During cleaning, observe the color of the internal shielding; if significant metal deposits or a dull, dark discoloration appear on the inner wall, a vacuum level test must be scheduled.
Strictly avoid touching or scratching the sealing areas of the interrupter to prevent air leakage, which would cause a loss of vacuum integrity.