Brand: nevadent
Category: Electric Toothbrush
Document Type: Manual
Language: EN
Available Languages: EN , ES
Manual for NSZB 3.7 C4
Uploaded: April 20, 2026, 8:06 p.m.
Warranty Information
This appliance has a 3-year warranty from the date of purchase covering material or manufacturing faults.
Basic Operation
Charging: Place the handset on the charger. The charging indicator lamp turns red and then green when fully charged (approx. 12 hours). The charging indicator lamp flashing constantly means the battery is low.
Activating/Deactivating Clever Start: Press and hold the On/Off button for 5 seconds. LEDs flash to indicate activation/deactivation.
Using Attachments: Attachments (brush heads, interdental brush, floss attachment) can be pulled upwards to remove and pushed down to attach. Ensure the drive shaft aligns correctly.
Programmes: Press the On/Off button within 10 seconds of switching on to select between Normal, Sensitive, Whitening, and Deep Cleaning modes. The corresponding LED will light up.
Brushing: Divide mouth into quadrants. Start with gums and move towards the crown. Use gentle pressure. The toothbrush has a 30-second interval timer and a 2-minute auto-shutoff.
Troubleshooting and error codes
| Problem | Possible Cause | Solution |
|---|---|---|
| The toothbrush is not switching on. | The battery is empty. | Charge the battery (see "Before first use"). |
| The toothbrush is not charging. | The charger is not properly connected to the mains socket or the handset is not correctly placed on the charging station. | Check all connections. Ensure the handset is correctly placed on the charging station. |
| The brush head is not rotating. | The brush head is not properly attached. | Remove and re-attach the brush head. |
| The Clever Start function is not working. | The function is deactivated or 14 cleaning cycles have been completed. | Reactivate the Clever Start function (see "Activating/deactivating the Clever Start function"). |
| Initial gum bleeding. | Unfamiliar sensation. | This is normal. Consult your dentist if it continues for more than two weeks. |