1. Introduction
This manual provides essential instructions for the safe and efficient operation, installation, and maintenance of your BUNN CWTF15-APS Commercial Airpot Coffee Brewer. This automatic brewer is designed for commercial use, featuring a hot water faucet and compatibility with 1.9 to 3-liter airpots. Please note that airpots are not included with this unit and must be purchased separately.
2. Important Safety Information
WARNING: To reduce the risk of electric shock, do not remove covers. No user-serviceable parts inside. Refer servicing to qualified service personnel. Disconnect power before servicing.
- Read all instructions before operating the appliance.
- Do not immerse the appliance in water or other liquids.
- Ensure the appliance is properly grounded to prevent electrical shock.
- Do not operate with a damaged cord or plug.
- Keep hands and cords away from hot surfaces during operation.
- This appliance is intended for commercial use only.
- Always ensure the water tank is filled before turning on the heater.
This equipment must be installed in a location where its use can be supervised by trained personnel. It must comply with applicable plumbing codes and regulations.
3. Product Overview
The BUNN CWTF15-APS is a robust commercial coffee brewer constructed from stainless steel, designed for durability and consistent performance. It features an automatic water fill system, a hot water faucet, and a SplashGuard funnel for user safety.
Figure 3.1: Front-side view of the BUNN CWTF15-APS Commercial Airpot Coffee Brewer with an airpot in place.
Figure 3.2: Front view of the brewer, highlighting the brew funnel and control panel.
Figure 3.3: Top view of the control panel with power switch, start button, and ready indicator.
Key Components:
- Control Panel: Features an ON/OFF switch, START button, and a READY indicator light.
- Brew Funnel: Holds the coffee filter and grounds during the brewing process.
- Hot Water Faucet: Dispenses hot water for other beverages or tasks.
- Airpot Stand: Designed to accommodate various airpot sizes (1.9 to 3 liters).
- Water Inlet: Located at the rear for connection to a plumbed water line.
4. Setup and Installation
4.1 Unpacking and Inspection
Carefully remove the brewer from its packaging. Inspect the unit for any signs of shipping damage. Report any damage immediately to your supplier.
4.2 Placement
Place the brewer on a sturdy, level counter or table. Ensure there is adequate clearance around the unit for ventilation and access for operation and maintenance. Avoid placing near heat sources or in direct sunlight.
4.3 Water Connection
The CWTF15-APS is an automatic brewer and requires a plumbed cold water line connection. A qualified plumber should perform this installation to ensure compliance with local plumbing codes.
- Connect the brewer's water inlet (located at the rear) to a potable cold water supply with a shut-off valve.
- Ensure water pressure is within the recommended range (typically 20-90 psi).
Figure 4.1: Rear view of the brewer, showing the water inlet and electrical warning.
4.4 Electrical Connection
Connect the brewer to a dedicated 120V AC, 15 Amp (minimum) grounded electrical outlet. Do not use extension cords. Ensure the electrical supply matches the specifications on the brewer's rating label.
4.5 Initial Fill and Heating
- Ensure the water supply is connected and the shut-off valve is open.
- Turn the brewer's power switch to the 'ON' position. The tank will begin to fill automatically.
- Allow the tank to fill and heat the water. This process may take approximately 15-20 minutes for the first cycle. The 'READY' light will illuminate when the water is at the optimal brewing temperature.
- Dispense a few cups of hot water from the hot water faucet to flush the system and ensure proper heating. Discard this water.
5. Operating Instructions
5.1 Brewing Coffee (Automatic)
- Place an empty airpot on the drip tray beneath the brew funnel.
- Insert a BUNN coffee filter into the brew funnel.
- Add the desired amount of fresh, commercially ground coffee into the filter. Refer to your coffee supplier for recommended grind and quantity.
- Slide the brew funnel into the brewer until it is securely in place.
- Ensure the 'READY' light is illuminated. Press the 'START' button to initiate the brew cycle.
- The brewer will automatically dispense hot water over the coffee grounds. Once the cycle is complete, remove the brew funnel and discard the used grounds and filter.
5.2 Brewing Coffee (Pour-Over Backup)
In case of a water supply interruption, the brewer can be operated in pour-over mode:
- Follow steps 1-4 from the Automatic Brewing section.
- Manually pour the required amount of cold water (e.g., 64 oz for a full airpot) into the top opening of the brewer.
- The brew cycle will begin.
5.3 Using the Hot Water Faucet
To dispense hot water:
- Place a cup or container under the hot water faucet.
- Push the faucet handle to dispense hot water. Release to stop.
- Exercise caution as the water is very hot.
6. Maintenance and Cleaning
Regular cleaning and maintenance are crucial for the longevity and optimal performance of your BUNN brewer.
6.1 Daily Cleaning
- Exterior: Wipe down all exterior stainless steel surfaces with a damp cloth and mild, non-abrasive cleaner.
- Brew Funnel: Remove and wash the brew funnel after each use with warm, soapy water. Rinse thoroughly.
- Drip Tray: Empty and clean the drip tray regularly.
6.2 Descaling
Mineral deposits from water can accumulate inside the brewer over time, affecting performance. Descaling should be performed periodically, depending on water hardness and usage. Refer to the full BUNN service manual for detailed descaling procedures or contact a qualified service technician.
7. Troubleshooting
This section addresses common issues you might encounter. For more complex problems, contact customer support.
| Problem | Possible Cause | Solution |
|---|---|---|
| Brewer does not turn on | No power to outlet; Power switch off; Circuit breaker tripped | Check power cord connection; Ensure power switch is ON; Reset circuit breaker |
| No water dispensing | Water supply off; Clogged water line; Tank not filled/heated | Check water supply valve; Inspect water line for kinks; Wait for 'READY' light |
| Coffee overflows from funnel | Too much coffee grounds; Incorrect grind size; Clogged funnel/filter | Reduce coffee quantity; Use coarser grind; Clean funnel and ensure filter is properly seated |
| Coffee is not hot enough | Tank not fully heated; Descaling needed | Wait for 'READY' light; Perform descaling procedure |
8. Specifications
| Feature | Detail |
|---|---|
| Brand | BUNN |
| Model Name | CWTF15-APS |
| Item Model Number | 23001.0006 |
| Product Dimensions | 21.4"D x 9"W x 24.1"H |
| Item Weight | 28 pounds |
| Voltage | 120 Volts |
| Operation Mode | Semi-Automatic (Automatic with Pour-Over Backup) |
| Exterior Finish | Stainless Steel |
| Accommodates | 1.9 to 3L Airpots (sold separately) |
| Special Feature | Thermal, Hot Water Faucet |
9. Warranty and Support
BUNN products are manufactured to high standards and are backed by a manufacturer's warranty. Specific warranty details, including duration and coverage, are typically provided with the product documentation or can be found on the official BUNN website.
For technical assistance, parts, or service inquiries, please contact BUNN customer support. When contacting support, please have your model number (CWTF15-APS) and part number (23001.0006) readily available.
You can find additional resources and contact information on the official BUNN Brand Store or their corporate website.
