1). Check the appearance: Inspect whether the shell/glass seal is cracked or the pins are oxidized; replace the capacitor if any damage is found.
2). Test insulation: Use a multimeter to measure the insulation resistance between the shell and pins (in humid environments, dry the capacitor first before testing).
3). Verify parameters: Compare with the specification sheet to confirm if it is compatible with the current voltage/frequency; replace it with a matching model if there is a mismatch.
4). Check installation: Re-tighten the ground connection, cut short overly long pins, and install anti-loosening washers in vibrating scenarios. Learn More