Bunn CWTF15-3 Automatic Commercial Coffee Brewer Instruction Manual

1. Introduction

The Bunn CWTF15-3 Automatic Commercial Coffee Brewer (Model 12950.0212) is designed for efficient and high-volume coffee brewing in commercial settings. This drip-brewer connects directly to your plumbing system via an included water line, eliminating the need for manual refilling. It features a durable stainless-steel construction and a low-profile design, allowing for placement directly under kitchen cabinets.

Key features include:

• Fast and efficient brewing, capable of producing 3.9 gallons of coffee per hour.
• Three lower warmers to keep multiple carafes of coffee hot.
• Integrated hot-water tap for instant hot water.
• SplashGard funnel designed to deflect hot liquids away from hands.
• Backup pour-over functionality for continued operation if the water line is interrupted.
• Compatibility with a wide range of carafes, decanters, and airpots (sold separately).

Figure 1: Front view of the Bunn CWTF15-3 Automatic Commercial Coffee Brewer with three carafes.

2. Important Safety Information

WARNING: This product can expose you to Bisphenol A (BPA), which is known to the State of California to cause Birth Defect/Reproductive Harm. For more information go to www.P65Warnings.ca.gov.

Always read and understand the entire operating manual before using this product. Failure to comply with safety instructions may result in injury or damage to the appliance.

• Ensure the appliance is properly grounded.
• Do not use near combustible materials.
• Do not immerse the appliance in water.
• Exercise caution as surfaces and liquids can be hot.

3. Setup

3.1 Unpacking and Placement

Carefully remove the coffee brewer from its packaging. Due to its weight (approximately 39.4 pounds), it is recommended to have assistance during placement. The low-profile design allows for convenient placement directly under most kitchen cabinets.

3.2 Water Line Connection

This brewer is designed to attach directly to your plumbing system. Connect the included water line to a cold water supply. Ensure all connections are secure to prevent leaks. Refer to local plumbing codes for proper installation.

Figure 2: Back view of the brewer, highlighting the water line connection point.

3.3 Initial Cleaning

Before first use, clean all removable parts, including the brew funnel and carafes, with mild soap and warm water. Wipe down the exterior of the unit with a damp cloth. Do not immerse the main unit in water.

4. Operating Instructions

4.1 Brewing Coffee

1. Ensure the brewer is connected to the water supply and powered on. The 'READY' indicator light will illuminate when the water is heated to the optimal brewing temperature.
2. Place a filter into the brew funnel.
3. Add your desired amount of ground coffee to the filter.
4. Slide the brew funnel into its designated slot.
5. Place an empty carafe on the warming plate directly below the brew funnel.
6. Press the 'START' button to begin the brewing cycle. The brewer will automatically draw water from the connected line and dispense it over the coffee grounds.
7. The SplashGard funnel will help prevent hot liquid from splashing during brewing.

Figure 3: Close-up of the control panel and brew funnel area.

4.2 Using the Warmers

The Bunn CWTF15-3 features three lower warmers to keep brewed coffee at an optimal serving temperature. Each warmer has an independent switch (Front, Side, Rear) on the control panel. Place filled carafes on the desired warming plates and activate the corresponding switch.

Figure 4: Top view showing the three warming plates.

4.3 Hot Water Tap

For instant hot water for tea, hot chocolate, or other beverages, use the hot-water tap located on the side of the brewer. Simply lift the lever to dispense hot water.

4.4 Pour-Over Functionality

In the event of a water line interruption, the brewer can be operated manually using the pour-over function. Simply pour cold water into the top reservoir, and the brewing cycle will initiate. Ensure the brew funnel is in place with coffee and a carafe is on the warming plate.

5. Maintenance

Regular cleaning and maintenance will ensure the longevity and optimal performance of your Bunn CWTF15-3 coffee brewer.

• Daily Cleaning: After each use, empty and clean the brew funnel and carafes. These parts are not dishwasher safe and should be hand-washed with mild soap and warm water.
• Exterior Cleaning: Wipe down the stainless-steel exterior with a damp cloth. Avoid abrasive cleaners or scouring pads that could scratch the surface.
• Descaling: Periodically descale the brewer to remove mineral buildup, especially in areas with hard water. Refer to the full manufacturer's manual for detailed descaling instructions and recommended descaling solutions.
• Spray Head: Check the spray head for any blockages and clean as necessary to ensure even water distribution during brewing.

6. Troubleshooting

If you encounter issues with your Bunn CWTF15-3 coffee brewer, consult the following common troubleshooting tips:

• No Power: Ensure the coffee brewer is properly plugged into a functioning electrical outlet. Check the circuit breaker.
• No Water Flow: Verify that the water supply valve is open and the water line is not kinked or blocked. Check for any issues with the plumbing connection.
• Slow Brewing: This could indicate a clogged spray head or mineral buildup. Refer to the maintenance section for cleaning and descaling procedures.
• Coffee Not Hot Enough: Ensure the warmers are switched on for the respective carafes. Allow sufficient time for the brewer to heat water to the ready temperature.
• Overflowing Brew Funnel: This may be due to an improperly seated filter, too much coffee grounds, or a clogged spray head.

For persistent issues, contact Bunn customer support or a qualified service technician.

7. Specifications

8. Warranty and Support

For detailed warranty information and customer support, please refer to the official Bunn website or the documentation included with your product. Keep your purchase receipt as proof of purchase for any warranty claims.

Bunn offers various protection plans for extended coverage, including 3-Year and 4-Year options, as well as a Complete Protect plan. These plans are available separately and provide additional peace of mind for your investment.