Waterdrop TST-UF-B

Waterdrop TST-UF-B 3-Stage Stainless Steel Under Sink Water Filter System with Dedicated Faucet User Manual

Model: TST-UF-B

Brand: Waterdrop

1. Introduction

This manual provides comprehensive instructions for the installation, operation, and maintenance of your Waterdrop TST-UF-B 3-Stage Stainless Steel Under Sink Water Filter System. Please read this manual thoroughly before installation and use to ensure proper function and safety.

Important Note: This system is designed for municipal tap water and cold water sources only. It does not reduce Total Dissolved Solids (TDS) and is not suitable for well water or hot water. The system retains beneficial minerals such as potassium, calcium, sodium, and magnesium.

Key Features:

  • Advanced 3-Stage Filtration: Features 6 layers of filter materials, including a 0.01 micron ultrafiltration membrane, to reduce impurities like chlorine, heavy metals, and odors.
  • Efficient Filtration & Improved Taste: Provides water with a taste superior to bottled water, ideal for drinking and cooking.
  • Fast and Stable Water Flow: Delivers up to 1.59 GPM, filling an 8-ounce cup in approximately 2.3 seconds.
  • Durable Construction: Crafted from lead-free 304 stainless steel for longevity and leak prevention.
  • Dedicated Faucet: Includes a lead-free brushed stainless steel faucet for purified water, allowing separate use from your main tap.
  • Eco-Friendly: Long-lasting filters reduce plastic waste.
Diagram illustrating 6-stage advanced filtration for great-tasting water, showing removal of bacteria, chlorine, large particles, sand, rust, sediment, asbestos, and giardia.

Figure 1: 6-Stage Advanced Filtration Process

Diagram showing 0.01 micron ultrafiltration membrane filtering out harmful substances while retaining beneficial minerals.

Figure 2: 0.01 µm Ultrafiltration Mechanism

Image showing a person in a lab coat holding a water sample, with icons indicating food-grade, BPA-free, and lead-free materials, and NSF/ANSI certifications.

Figure 3: Quality Assurance and Certifications

Image of the stainless steel filter system with text highlighting 'Stronger', 'More Durable', 'Avoid Secondary Pollution', and icons for long lifespan, abrasion resistant, high pressure resistant, and easy to clean.

Figure 4: Food-Grade 304 Stainless Steel Construction

2. Product Specifications

BrandWaterdrop
Model NameTST-UF-B
Product Dimensions12.99"L x 4.92"W x 14.49"H
MaterialStainless Steel
Capacity8000 Gallons
Installation TypeCan be hung on the cabinet wall or placed on the floor
Purification Method0.01 µm Ultra-Filtration (reduces bacteria larger than 0.01 µm)
Maximum Flow Rate1.59 Gallons Per Minute
Upper Temperature Rating100 Degrees Celsius
Supported Water TDS Level Maximum (PPM)300

3. What's in the Box

  • Under Sink Water Filter System
  • Inlet & Outlet Hoses
  • 3/8"–1/2" Converter Set
  • Teflon Tape
  • Dedicated Faucet

4. Setup and Installation

Follow these steps to install your Waterdrop TST-UF-B water filter system. For a visual guide, please refer to the installation video below.

Precautions for Installation:

  • Wear gloves to protect your hands.
  • Only use with cold, clean water.
  • Do not use in freezing weather; empty the housing to prevent damage.
  • Keep small parts out of reach of young children.
  • Follow local rules for installation.
  • Always turn off the water before changing the filter.

Video 1: Installation Instructions for Under Sink Ultrafiltration System. This video provides a step-by-step visual guide for setting up your water filter system.

Installation Steps:

  1. Install the Feed Water Adapter (3/8" or 1/2") (cold water only):
    • Shut off the water supply. Turn on the kitchen faucet to release water pressure.
    • Disconnect the cold water pipe from the cold water supply valve.
    • If water tubing and feed water adapter are separate, connect the adapter to the inlet tubing before installation.
    • Twist the feed water adapter onto the cold water supply valve (with its washer) and tighten with an adjustable wrench.
    • Twist the cold water pipe (with its washer) onto the feed water adapter and tighten with an adjustable wrench.
  2. Install the Faucet:
    • Insert the faucet spout into the faucet body.
    • Insert the faucet stem into the hole on the countertop. (NOTE: If no hole exists, drill a 1" hole or use the soap dispenser hole).
    • Under the sink, slip on other parts in the order shown in the picture (refer to video for visual).
    • Insert the quick-connect fitting onto the faucet stem fully and firmly, then put on the blue lock clip.
  3. Connect Tubing:
    • Connect the inlet water tubing from the feed water adapter to the inlet water port of the filter system and pop the lock clip on the fitting.
    • Connect the outlet water tubing from the faucet to the outlet water port of the filter system and pop the lock clip on the fitting.
  4. Fix the System:
    • Option 1: Stand Alone: The system can stand directly inside the sink cabinet.
    • Option 2: Wall Mount: Drill two holes on the cabinet wall, insert two screws into the holes, and hang the filter onto the screws. Place supports under the base of each housing to carry the water weight and protect the threads from weakening over time.
Diagram showing the under sink water filter system installed under a sink, highlighting its compact dimensions and ease of installation.

Figure 5: Easy Installation Diagram

Image showing two installation options for the filter system: standing on the floor or suspended on the wall inside a cabinet.

Figure 6: Multiple Placement Options

5. Operating Instructions

After successful installation, follow these steps to prepare your system for use.

  1. Check for Leaks and Flush the Filter:
    • Turn on the cold water supply valve.
    • Check for leaks at all connectors, components, valves, and joints. Address any leaks immediately.
    • Turn on the new dedicated faucet.
    • Flush continuously for 10 minutes until the water runs clear. This removes air and carbon fines from the new filters.
Image showing a hand filling a glass of water from the dedicated faucet, with text indicating '2.3S to Fill up A Cup of Water' and '1.59 gpm High flow rate'.

Figure 7: Fast Water Flow Rate

Understanding TDS:

Total Dissolved Solids (TDS) refers to the total concentration of dissolved substances in water. It includes inorganic salts (like calcium, magnesium, potassium, sodium) and small amounts of organic matter. While often used as an indicator of water quality, TDS alone does not determine if water is safe to drink. Many beneficial minerals contribute to TDS, and a low TDS reading does not necessarily mean water is cleaner or safer, nor does a high TDS reading mean it's unsafe. This filter system is designed to retain beneficial minerals, so it will not significantly reduce TDS levels.

Video 2: What TDS Really Is? This video explains the concept of Total Dissolved Solids (TDS) and its relevance to water quality.

Infographic explaining that low TDS does not equal cleaner water, showing what raises TDS (minerals) and what TDS does not show (chlorine, bad taste, odor).

Figure 8: Low TDS Does Not Equal Cleaner Water

6. Maintenance (Filter Replacement)

Regular filter replacement is crucial for maintaining optimal water quality and system performance. The filter life varies based on water quality and usage.

Recommended Filter Replacement Schedule:

  • PP Filter (P1): 6-8 months
  • UF Filter (U2): 12 months
  • CT Filter (C3): 12-24 months

To replace the filter for your TST-UF/TST-UF-B system, search for B0D91M9322 for the WD-P1 filter, B0D91VJ8ZK for the WD-U2 filter, B0D91VQ298 for the WD-C3 filter.

Image showing the three filter cartridges (P1, U2, C3) with their respective estimated lifespans: PP 6-8 months, UF 12 months, CT 12-24 months.

Figure 9: Filter Lifespan Overview

Video 3: How to Replace the Filter of an Under Sink Water Filter. This video demonstrates the filter replacement process.

Filter Replacement Steps:

  1. Remove the Old Filter:
    • Turn off the water supply and open the faucet to release pressure and drain water.
    • Place a towel under the unit to catch any drips.
    • Remove the lock clip and pull out the inlet/outlet tubing.
    • Take the system out of the cabinet (if wall-mounted).
    • Use the included wrench to unscrew the fastening ring.
    • Hold the system and pull out the old cartridge.
    • Remove and discard the old filter.
  2. Install the New Filter:
    • Insert the new filter until the rings are fully seated.
    • Press the housing firmly into place.
    • Tighten the ring with the wrench.
    • Connect the tubing and attach the lock clip.
    • Follow the labels (P1, U2, C3) to ensure correct filter order.
  3. Flush the System:
    • Turn on the cold water supply valve and check for leaks.
    • Open the faucet.
    • Flush for 10 minutes until the water runs clear.

7. Troubleshooting

If you encounter any issues with your Waterdrop TST-UF-B system, please review the installation and operating instructions carefully. Ensure all connections are secure and water supply is fully open. If problems persist, please contact customer support for assistance.

8. Warranty and Support

For any questions, concerns, or technical support, please contact Waterdrop customer service:

  • U.S. Phone: 1-888-352-3558
  • Email: UWF@waterdropfilter.com

If you notice any thread mismatch during installation, please contact our customer service immediately.

Video 4: Safety Test - Stainless Steel Ultra-Filtration Water Filter. This video demonstrates the durability and leak-proof design of the stainless steel filter system.

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