1. Introduction
This manual provides instructions for the installation, operation, and maintenance of your Waterdrop UL12B Under-Sink Water Filtration System. This system is designed to provide filtered water directly from your faucet, reducing various contaminants and improving water quality.
The Waterdrop UL12B system features advanced filtration technology certified by IAPMO against NSF/ANSI Standard 42 for the reduction of chlorine, taste, and odor, and NSF/ANSI 372 for lead-free materials. It is also effective in reducing PFAS, PFOA/PFOS, rust, heavy metals, chemical impurities, and sand.
Veuillez lire attentivement ce manuel avant l'installation et l'utilisation afin de garantir un fonctionnement correct et une sécurité optimale.
2. Produit terminéview
2.1 Composants inclus
- Waterdrop UL12B Filter Unit
- Robinet dédié
- Connection Accessories (T-adapter, tubing)
- Convertisseur 3/8"-1/2".
- 3/8" Line
- Indicateur de changement de filtre
2.2 Principales caractéristiques
- Filtration avancée : Reduces PFAS, PFOA/PFOS, lead, chlorine, rust, heavy metals, chemical impurities, and improves taste and odor.
- Performance certifiée : IAPMO certified to NSF/ANSI 42 for chlorine, taste, and odor reduction, and NSF/ANSI 372 for lead-free materials.
- Installation sans perçage : Features a no-drill wall mount with a rotary lock for easy under-sink setup.
- Longue durée de vie du filtre : Provides up to 11,000 gallons or 12 months of filtration.
- Débit élevé : Delivers a fast flow rate of 5.026 liters per minute (1.33 GPM).
- Indicateur de durée de vie du filtre : Integrated indicator alerts you when it's time to replace the filter.

Image: Waterdrop UL12B filter installed under a sink, showing certifications and contaminants reduced. Note: This product does not remove TDS and can only be connected to cold water lines.

Image: IAPMO R&T Certificates of Listing for NSF/ANSI Standard 42 and 372 for the WD-UL12B filter.

Image: Multi-stage filtration process diagram, showing reduction of various contaminants by polyester membrane and activated carbon block.

Image: Comparison of Waterdrop's 3-layer filter with 20X filtration efficiency against a single-layer filter.
3. Consignes de sécurité
- This system is designed for use with cold water lines only. Do not connect to hot water.
- Ne pas utiliser avec de l’eau microbiologiquement dangereuse ou de qualité inconnue sans désinfection adéquate avant ou après le système.
- The system does not reduce Total Dissolved Solids (TDS). If TDS reduction is required, a Reverse Osmosis system may be more suitable.
- Assurez-vous que tous les raccords sont bien fixés afin d'éviter les fuites.
- The product is made from BPA-free and lead-free materials.
4. Configuration et installation
4.1 Avant de commencer
- Assurez-vous de disposer de tous les composants énumérés dans la section 2.1.
- Turn off the main water supply to your sink.
- Gather necessary tools (though minimal tools are required for this drill-free system).
4.2 étapes d'installation
- Installer le robinet : If using the included faucet, install it into an existing hole on your sink or countertop. The faucet features a 360-degree swivel and a chrome finish. Secure it from the top and twist to lock.
- Se connecter au filtre : Connect the inlet tubing to the filter unit. The system uses push-to-connect fittings for ease of installation.
- Connectez l'alimentation en eau : Shut off the water supply. Remove the existing faucet hose from the cold water supply valve. Install the provided T-adapter to the cold water supply valve, then reconnect your original faucet hose to the T-adapter. Connect the filter's inlet tubing to the T-adapter.
- Connect to the Faucet: Connect the outlet tubing from the filter unit to the dedicated faucet.
- Secure the Filter Unit: The filter unit can be secured under the sink using its drill-free wall mount with a rotary lock. A suction cup base provides additional stability.

Image: Three-step setup guide for connecting the filter to the water supply and faucet.

Image: Faucet installation kit details, showing top mount and 360-degree swivel.
5. Mode d'emploi
5.1 Rinçage initial
After installation, slowly turn on the cold water supply. Open the dedicated filtered water faucet and let the water run for at least 5-10 minutes. This flushes out any carbon fines and air from the system, ensuring optimal performance and taste.
5.2 Fonctionnement normal
Once flushed, your system is ready for use. Simply open the dedicated filtered water faucet to dispense purified water. The system maintains a strong flow rate for quick filling.
6. Entretien
6.1 Filter Life Indicator
The Waterdrop UL12B system includes an integrated indicator light on the filter unit:
- Feu vert clignotant : Indicates it is time to replace the battery for the indicator.
- Red light flashing and beep: Indicates it is time to replace the filter.
If no light is visible or a steady green light is shown, the filter and battery are functioning correctly. Tap the indicator to save power.

Image: Filter life reminder indicator lights.
6.2 Remplacement du filtre
The filter should be replaced every 12 months or after filtering 11,000 gallons, whichever comes first, or when the red indicator light flashes.
- Coupez l'arrivée d'eau froide du système de filtration.
- Tournez l'ancienne cartouche filtrante dans le sens inverse des aiguilles d'une montre pour la déverrouiller et la retirer.
- Insert the new filter cartridge and twist clockwise to lock it into place. No tools are required.
- Turn on the cold water supply and flush the new filter for 5-10 minutes as per initial flushing instructions.

Image: Filter replacement process, highlighting tool-free and quick replacement.
7. Dépannage
| Problème | Cause possible | Solution |
|---|---|---|
| Débit d'eau lent | Clogged filter cartridge; Low water pressure; Kinked tubing | Replace filter cartridge; Check household water pressure; Straighten tubing |
| Fuites d'eau | Loose connections; Damaged O-rings; Incorrectly installed filter | Tighten all connections; Check and replace O-rings if damaged; Reinstall filter correctly |
| Bad taste/odor returns | Filter cartridge expired or saturated | Remplacer la cartouche filtrante |
| Filter indicator not working | Batterie épuisée | Replace the battery for the indicator. |
8. Spécifications
| Spécification | Valeur |
|---|---|
| Numéro de modèle | WD-UL12B |
| Dimensions (L x l x H) | 18L x 13.5l x 33H centimètres |
| Matériel | Plastique |
| Capacité du filtre | 11,000 gallons |
| Durée de vie du filtre | 12 mois |
| Débit max. | 5.026 litres par minute (1.33 GPM) |
| Type d'installation | Sous-évier |
| Méthode de purification | Filtration |
| Source d'énergie | Pression de l'eau |
| Max TDS Supported | 300 PPM (Note: Does not reduce TDS) |
| Certifications | NSF/ANSI 42, NSF/ANSI 372 (IAPMO Certified) |
9. Garantie et assistance
For warranty information, technical support, or replacement parts, please contact Waterdrop customer service directly. Refer to the product packaging or the official Waterdrop website pour les coordonnées.