Bunn CWTF TWIN-APS User Manual

OPERATING & SERVICE MANUAL
BUNN-O-MATIC CORPORATION
POST OFFICE BOX 3227
SPRINGFIELD, ILLINOIS 62708-3227
PHONE: (217) 529-6601 FAX: (217) 529-6644
10737.0000L 10/01 ©1993 Bunn-O-Matic Corporation www.bunnomatic.com
CWT TWIN
CWTF TWIN
CWTF TWIN-APS
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BUNN
®

Bunn CWTF TWIN-APS Specifications

General

Category	Coffee Maker
Model	CWTF TWIN-APS
Brand	Bunn
Number of Warmers	2
Voltage	120V
Material	Stainless Steel
Color	Stainless Steel
Type	Commercial Coffee Brewer
Water Source	Plumbed
Heating System	Tank Heater
Product Type	Commercial Coffee Brewer

Summary

INTRODUCTION AND WARRANTY

Warranty Exclusivity and Limitations

States that the provided warranty is exclusive and supersedes all other warranties.

USER NOTICES AND SAFETY

Critical Safety Warnings

Covers hot contents, operational safety precautions, and hot surfaces.

ELECTRICAL REQUIREMENTS

Electrical Hook-Up Procedure

Provides step-by-step instructions for safely connecting the brewer to electrical power.

PLUMBING REQUIREMENTS

CWT & CWTF Model Plumbing

Outlines the specific steps for connecting water lines to CWT and CWTF models.

INITIAL SET-UP AND OPERATION

Adjusting Brew Volumes

Explains how to adjust the brew volume settings for desired batch sizes.

OPERATING CONTROLS AND PROCEDURES

Operating Controls

Describes the function of the ON/OFF and Start switches.

Coffee Brewing Process

Provides step-by-step instructions for brewing coffee.

Cleaning and Maintenance

Details the recommended procedures for cleaning the equipment.

TROUBLESHOOTING

Brew Cycle Start Issues

Lists probable causes and remedies for the brew cycle failing to start.

TROUBLESHOOTING COMMON ISSUES

Water Temperature Issues

Lists probable causes and remedies when the water is not reaching the correct temperature.

TROUBLESHOOTING CONTINUED ISSUES

Beverage Level and Steaming Problems

Details causes and solutions for inconsistent beverage levels and steaming.

TROUBLESHOOTING FURTHER ISSUES

Sprayhead Dripping and Water Flow Issues

Explains causes and solutions for dripping sprayheads and continuous water flow.

Dispenser Overflow Issues

Lists causes and remedies for beverage overflowing the dispenser.

TROUBLESHOOTING QUALITY AND NOISE

Beverage Quality and Noise Issues

Lists causes and remedies for weak beverages and unusual brewer noises.

TROUBLESHOOTING FINAL ISSUES

Noise and Temperature Troubleshooting

Addresses persistent noise issues and low beverage serving temperature.

SERVICE AND COMPONENT ACCESS

Component Access Procedures

Explains how to access various components within the brewer for service.

SERVICE: CONTROL THERMOSTAT

SERVICE: LIMIT THERMOSTAT

Limit Thermostat Service

Outlines test procedures and removal/replacement for the limit thermostat.

SERVICE: ON/OFF SWITCHES

ON/OFF Switch Service

Explains test procedures and removal/replacement for ON/OFF switches.

SERVICE: ON/OFF SWITCHES (CONT.)

ON/OFF Switch Wiring and Replacement

Details testing, wiring, and replacement for ON/OFF switches.

SERVICE: RECOVERY BOOSTER RELAY

Recovery Booster Relay Service

Provides test procedures and removal/replacement for the recovery booster relay.

SERVICE: SOLENOID VALVES

Solenoid Valve Service

Outlines test procedures, wiring, and removal/replacement for solenoid valves.

SERVICE: START SWITCHES

Start Switch Service

Provides test procedures, wiring, and removal/replacement for start switches.

SERVICE: TANK HEATER

Tank Heater Service

Outlines test procedures and removal/replacement for the tank heater.

SERVICE: TANK HEATER SWITCH

Tank Heater Switch Service

Provides test procedures and removal/replacement for the tank heater switch.

SERVICE: TANK HEATER SWITCH (CONT.)

Tank Heater Switch Continued Service

Details further testing and removal/replacement steps for the tank heater switch.

SERVICE: EARLY MODEL TIMERS

Early Model Timer Service

Provides test procedures and removal/replacement for early model timers.

SERVICE: LATE MODEL DIGITAL TIMERS

Late Model Digital Brew Timer Service

Outlines test procedures and removal/replacement for late model digital brew timers.

SERVICE: DIGITAL TIMER ADJUSTMENTS

Digital Brew Timer Volume Adjustment

Details modifying brew volumes and programming disable features for digital timers.

SERVICE: WARMER ELEMENTS

Warmer Element Service

Provides test procedures and removal/replacement for warmer elements.

SCHEMATIC WIRING DIAGRAMS

CWT/CWTF TWIN 0/2, 2/2, 4/2 & CWT TWIN-APS

Detailed wiring schematic for specific brewer models.

SCHEMATIC WIRING DIAGRAMS (CONT.)

CWT TWIN 2/2 & 4/2 W/RECOVERY BOOSTER

Detailed wiring schematic for models with recovery booster.

SCHEMATIC WIRING DIAGRAMS (CONT.)

CWTF TWIN 0/6

Detailed wiring schematic for CWTF TWIN 0/6 models.

SCHEMATIC WIRING DIAGRAMS (CONT.)

CWTF TWIN 4/2 & 0/6 TWO-CIRCUIT

Detailed wiring schematic for two-circuit CWTF TWIN models.

SCHEMATIC WIRING DIAGRAMS (CONT.)

CWTF TWIN 0/6 WITH RECOVERY BOOSTER

Detailed wiring schematic for CWTF TWIN 0/6 models with recovery booster.

SCHEMATIC WIRING DIAGRAMS (CONT.)

CWTFA TWIN 2/2 & 4/2 THREE PHASE

Detailed wiring schematic for three-phase CWTFA TWIN models.

SCHEMATIC WIRING DIAGRAMS (CONT.)

CWTFA & CWTFB TWIN 2/2 & 4/2 TWO WIRE

Detailed wiring schematic for two-wire CWTFA & CWTFB TWIN models.