Charger’s enclosure vibrates or rattles when the fan or relay operates.

Safety first: Turn OFF power before tightening any screws or opening the unit.

• 1. Check wall mounting: Ensure all mounting screws are tight and the charger is firmly attached to the wall or pedestal.
• 2. Inspect external hardware: Tighten any loose cover screws or external brackets.
• 3. Internal inspection (qualified): With power OFF, open the charger and tighten any loose internal brackets, cable clamps, or fan mounts.
• 4. Fan balance: If the fan appears to wobble or vibrate excessively, replace it.

When to call a professional: For internal work, contact a qualified technician.