Bunn CW-APS Operating & Service Manual
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Bunn CW-APS Operating & Service Manual

Bunn cw-aps, cwt-ts operating & service manual
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BUNN
OPERATING & SERVICE MANUAL
BUNN-O-MATIC CORPORATION OF
10690.7000 1/99 ©1993 Bunn-O-Matic Corporation
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AURORA, ONTARIO L4G 3T9
PHONE: (905) 841-2866 FAX: (905) 841-2775
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  • Page 1 BUNN OPERATING & SERVICE MANUAL BUNN-O-MATIC CORPORATION OF 10690.7000 1/99 ©1993 Bunn-O-Matic Corporation U. S. IS , IL LI FI EL S/ N W AT RI NG IN G W IR E FO A. C. IN G E OR Y BE...
  • Page 2 SPECIFIED HEREIN, TO REPAIR OR, AT BUNN’S SOLE OPTION, REPLACEMENT OR REFUND. In no event shall Bunn be liable for any other damage or loss, including, but not limited to, lost profits, lost sales, loss of use of equipment, claims of Buyer’s customers, cost of capital, cost of down time, cost of substitute equipment, facilities or services, or any other special, incidental or consequential damages.

  • Page 3: User Notices

    Do not use near combustibles. FAILURE TO COMPLY RISKS EQUIPMENT DAMAGE, FIRE, OR SHOCK HAZARD READ THE ENTIRE OPERATING MANUAL BEFORE BUYING OR USING THIS PRODUCT THIS APPLIANCE IS HEATED WHENEVER CONNECTED TO A POWER SOURCE 00831.0000F 3/98 © 1988 BUNN-O-MATIC CORPORATION Page 3...

  • Page 4: Electrical Requirements

    90 psi to reduce it to 50 psi. The water inlet fitting is 1/4" flare. NOTE - Bunn-O-Matic recommends 1/4" copper tubing for installations of less than 25 feet and 3/8" for more than 25 feet from the 1/2"...
  • Page 5 Turn on the water supply. BE SURE TO INSTALL THE ABOVE ASSEMBLY AS SHOWN 10447.0000C 6/93 © 1989 BUNN-O-MATIC CORPORATION FIRST TYPE MODELS W/FAUCET BE SURE TO INSTALL THE ABOVE ASSEMBLY AS SHOWN 26225.0000A 4/95 © 1995 BUNN-O-MATIC CORPORATION...

  • Page 6: Initial Set-Up

    Fill the tank with water as directed: 4A. Models CW-APS & CW-TS: Pour three pitchers of tap water into the screened area on top of the brewer. Allow approximately two minutes between pitchers for water to flow into the tank. While the third pitcher of water is entering the tank, the tank will fill to capacity and the excess will flow from the sprayhead, out of the funnel, and into the dispenser.

  • Page 7: Cleaning

    Slide the funnel into the funnel rails. Place an empty dispenser beneath the funnel. Operate the brewer as directed: 5A. Models CW-APS & CW-TS: Pour one pitcher of tap water into the screened area on top of the brewer. 5B. Models CWT-APS, CWTF-APS, CWT-TS, CWTF-TS: Place the "ON/OFF"...
  • Page 8 A troubleshooting guide is provided to suggest probable causes and remedies for the most likely problems encountered. If the problem remains after exhausting the troubleshooting steps, contact the Bunn-O-Matic Technical Service Department. • Inspection, testing, and repair of electrical equipment should be performed only by qualified service personnel.
  • Page 9 TROUBLESHOOTING (cont.) PROBLEM Brew cycle will not start (cont.) (CWT-APS, CWTF-APS, CWT-TS, CWTF-TS) Water is not hot PROBABLE CAUSE 5. Timer 6. Solenoid Valve 7. Water strainer/flow control (.222 GPM) 1. Tank Heater Switch 2. Limit Thermostat CAUTION - Do not eliminate or bypass limit thermostat.
  • Page 10 TROUBLESHOOTING (cont.) PROBLEM Inconsistent beverage level in dispenser Consistently low beverage level in the dispenser (CWT-APS, CWTF-APS, CWT-TS, CWTF-TS) Spitting or excessive steaming PROBABLE CAUSE 1. Strainer /flow control (.222 GPM) (CWT-APS, CWTF-APS, CWT-TS, CWTF-TS) 2. Syphon System 3. Lime Build-up CAUTION - Tank and tank components should be delimed regularly depending on local...
  • Page 11 TROUBLESHOOTING (cont.) PROBLEM Spitting or excessive steaming (cont.) Dripping from sprayhead Water flows into tank continu- ously (ON/OFF Switch "ON") Water flows into tank continu- ously (ON/OFF Switch "OFF") Beverage overflows dispenser PROBABLE CAUSE 2. Control Thermostat 1. Syphon System 2.
  • Page 12 Brewer is making unusal noises (CWT-APS, CWTF-APS, CWT- TS, CWTF-TS) PROBABLE CAUSE 1. Filter Type 2. Coffee Grind 3. Sprayhead 4. Funnel Loading 5. Water Temperature 1. Funnel Loading 1. Solenoid 2. Plumbing Lines 3. Water Supply Page 12 REMEDY ® BUNN...
  • Page 13 TROUBLESHOOTING (cont.) PROBLEM Brewer is making unusal noises (cont.)(CWT-APS, CWTF-APS, CWT-TS, CWTF-TS) Brewer is making unusal noises (CW) PROBABLE CAUSE 4. Tank Heater 1. Tank Heater Page 13 REMEDY Remove and clean lime off the tank heater. See page 19 Remove and clean lime off the tank heater.

  • Page 14: Table Of Contents

    D IS IF : H ED . SC O IL H IG D EL R IS IL U : 65 CW-APS S. A. , ILL S/ N W AT W IR E FO E OR Y BE S MA E OR...

  • Page 15: Control Thermostat

    SERVICE (cont.) CONTROL THERMOSTAT EARLY MODELS LATE MODELS Location: Early Models: The control thermostat is mounted on a bracket inside the hood on the right side just in front of the tank lid. Late Models: The control thermostat is located inside the trunk on the left side of the component bracket.

  • Page 16: Limit Thermostat

    SERVICE (cont.) CONTROL THERMOSTAT (cont.) Early Models: Remove the two #8-32 screws securing control thermostat bracket mounted inside the hood. Late Models: Remove the one #8-32 screw se- curing the control thermostat to the component bracket in the trunk. Slide the grommet to the line 4.5" above the bulb on the new capillary tube.

  • Page 17: On/Off Switch

    SERVICE (cont.) ON/OFF SWITCH E FO E OR Y BE S MA E OR N TE D IS IF : • CR • SC IL ED W HE • BO • HE • US N TS N TE IN G R IS N TI IN G...

  • Page 18: Solenoid (Inlet)

    SERVICE (cont.) SOLENOID VALVE Location: The solenoid valve is located inside the trunk on the center lower part of the component bracket. Test Procedures: Disconnect the brewer from the power source. Disconnect the white and black wires from the solenoid valve. With the "ON/OFF" switch in the "ON"...

  • Page 19: Start Switch (Brew)

    SERVICE (cont.) START SWITCH E FO E OR Y BE S MA E OR D IS IF : • CR • SC W HE IL ED • BO • HE • US T IN H IS R IS IL U ©...
  • Page 20 SERVICE (cont.) TANK HEATER (Cont.) If voltage is present as described, proceed to #4 If voltage is not present as described, refer to the Wiring Diagrams and check wiring harness. Disconnect the black wire and the white wire or red wire from the tank heater terminals. Check for continuity across the tank heater termi- nals.

  • Page 21: Tank Heater Switch

    Gently pull the thermostat sensor and grommet from the tank lid. Insert a tube to the bottom of the tank and syphon ALL of the water out. (BUNN-O-MATIC has #12440 syphon assembly available for this pur- pose. Gently reinstall the thermostat sensor and grom- met in the tank lid.

  • Page 22: Timer

    SERVICE (cont.) TANK HEATER SWITCH (cont.) 15. Set tank assembly inside the hood on mounting brackets and secure with two #8-32 screws. 16. Reconnect the wires to the limit thermostat, tank heater and the control thermostat. Refer to limit thermostat, tank heater and control thermostat sections in this manual when reconnecting wires.
  • Page 23 SERVICE (cont.) TIMER (cont.) with a voltmeter when the "ON/OFF" switch is in the "ON" position (upper) and start switch pressed. Connect the brewer to the power source. The indication must be 120 volts ac for two wire 120 volt models and three wire 120/240 volt models. Disconnect the brewer from the power source.

  • Page 24: Wiring Diagrams

    SWITCH WHI/RED WHI/RED 120/240 VOLTS AC 3 WIRE 120/240 VOLTS AC 3 WIRE 120 VOLTS AC 2 WIRE 120 VOLTS AC 2 WIRE 10693.0000C 9/96 © 1993 BUNN-O-MATIC CORPORATION SINGLE PHASE SINGLE PHASE TS,TSR GREEN READY INDICATOR (FAUCET OPTION ONLY)

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Cwt-ts

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