Bunn CWTF TWIN-APS User Manual

OPERATING & SERVICE MANUALBUNN-O-MATIC CORPORATIONPOST OFFICE BOX 3227SPRINGFIELD, ILLINOIS 62708-3227PHONE: (217) 529-6601 FAX: (217) 529-6644

Page 10TROUBLESHOOTING (cont.)PROBLEMInconsistent beverage level in dis-penserConsistently low beverage level inthe dispenserSpitting or excessive ste

Page 11TROUBLESHOOTING (cont.)PROBLEMSpitting or excessive steaming(cont.)Dripping from sprayheadWater flows into tank continuously(ON/OFF Switch &

Page 12TROUBLESHOOTING (cont.)PROBLEMWeak beverageDry coffee grounds remain in thefunnelBrewer is making unusal noisesPROBABLE CAUSE1. Filter Type2. C

Page 13TROUBLESHOOTING (cont.)PROBLEMBrewer is making unusal noises(cont.)Low beverage serving tempera-turePROBABLE CAUSE4. Tank Heater1. Warme

Page 14SERVICEThis section provides procedures for testing andreplacing various major components used in thisbrewer should service become necess

Page 15SERVICE (cont.)CONTROL THERMOSTATLocation: The control thermostats are located inside thetrunk on the left side of the component brackets.T

Page 16ON/OFF BREW TOP ON/OFF BREWON/OFF BREW FRONT-SIDE-REAR ON/OFF BREW FRONT-SIDE-REARTOPON/LOWER START FRONT-TOP-REARON/LOWER START FRONT-TOP-REAR

Page 17SERVICE (cont.)10737 100801ON/OFF SWITCHES (cont.)Test Procedure:1. Disconnect the brewer from the power source.2. Viewing the switch from the

Page 18SERVICE (cont.)RECOVERY BOOSTER RELAY (OPTIONAL 2/2 & 0/6ONLY)FIG. 8 RECOVERY BOOSTER RELAYP2197LocationThe recovery boosters are located i

Page 19SERVICE (cont.)SOLENOID VALVESLocation:The solenoid valves are located inside the trunk onthe lower center part of the component brackets.Test

Page 2INTRODUCTIONThis equipment will brew one or two half-gallon batches of coffee simultaneously into awaiting dispensers(with just the press of a b

Page 20APS ModelsSTART SWITCHESSERVICE (cont.)ON/OFF BREW TOP ON/OFF BREWON/OFF BREW FRONT-SIDE-REAR ON/OFF BREW FRONT-SIDE-REARTOPON/LOWER START FRON

Page 21SERVICE (cont.)TANK HEATERLocation:The tank heaters are located inside the tank andsecured to the tank lid.Test Procedures:1. Disconnect the br

Page 22SERVICE (cont.)FIG. 16 TANK HEATER TERMINALSP1239Location:The tank heater switches are located on the rear ofthe brewer on the upper left and r

Page 23SERVICE (cont.)10737 1208005. Check for continuity between the black wire re-moved from the limit thermostat and the blackinsert on the

Page 24ONONOFF OFF TANKUSE COPPER WIRE ONLY FORPOWER SUPPLY CONNECTIONSUSE COPPER WIRE ONLY FORPOWER SUPPLY CONNECTIONS12345.5MINUTESBUNN-O-MA

Page 25SERVICE (cont.)10737 120800DIGITAL BREW TIMER (Late Models)P2197FIG. 21 DIGITAL BREW TIMERLocation:The timers are located inside the front of t

Page 2610737 120800BLU/BLK wire from TL5 to P1WHI/GRN wire from TL4 to (WHI) SolenoidWHI/BLU wire from TL3 to (BLK) SolenoidWHI wire from TL2 to P2BLK

Page 27SERVICE (cont.)WARMER ELEMENTS (Not used on APS Models)Location:The warmer elements are located under the warmerplates.Test Procedures:1. Disc

Page 28WHI/RED(NOT AVAILABLE ON CWT TWIN-APS) LEFT LOWER WARMERWHI/REDWHI/GRNP1-2P1-3P4-2P4-3SCHEMATIC WIRING DIAGRAMCWT/CWTF TWIN 0/2, 2/2, 4/2 &

Page 29P4-2P4-3SCHEMATIC WIRING DIAGRAM CWT TWIN 2/2 & 4/2 W/RECOVERY BOOSTERL1GREENN L2REDWHIWHIWHILEFT TOP WARMERRIGHT TOP WARMERWHIP4-1YEL YELW

Page 3USER NOTICESCarefully read and follow all notices in this manual and on the equipment. All labels on the equipment shouldbe kept in good condit

Page 30GRYPINL.E.D.L.E.D.GRYPINGRYPINOPTIONALINDICATORTIMERWHI/REDWHI/GRNP1-2P1-3SCHEMATIC WIRING DIAGRAM CWTF TWIN 0/6L1GREEN(FAUCET)BLKBLKRIGHT TANK

Page 31BLKWHIREDBLUTANK HEATERBLKLIMITTHERMOSTATLIMITTHERMOSTATSW1-LSW1-R(FAUCET SIDE)"KEEP WARM" HEATERSCHEMATIC WIRING DIAGRAMCWTF TWIN 4/

Page 32WHI/REDWHI/GRNP1-2P1-3SCHEMATIC WIRING DIAGRAM CWTF TWIN 0/6 WITH RECOVERY BOOSTERL1GREEN(FAUCET)THERMALSAFETY FUSEBLKBLKRIGHT TANK HEATERBLKBL

Page 33WHI/REDWHI/GRNP1-2P1-3P4-2P4-3SCHEMATIC WIRING DIAGRAM CWTFA TWIN 2/2 & 4/2L1GRN/YELL2 L3RIGHT TANK HEATERBLK BLURT. READY INDICATORRT. SW.

Page 34BLK WHI/REDWHI/GRNP1-2P1-3P4-2P4-3SCHEMATIC WIRING DIAGRAMCWTFA & CWTFB TWIN 2/2 & 4/2L1GRN/YELL2(FAUCET)THERMAL FUSEBLKRIGHT TAN

Page 4ELECTRICAL REQUIREMENTSCAUTION - The brewer must be disconnected from the power source until specified in Initial Set-Up."A" Models

Page 5Models CWT & CWTFPLUMBING REQUIREMENTSThese brewers must be connected to a cold water system with operating pressure between 20 and 90 psi (

Page 6INITIAL SET-UPCAUTION - The brewer must be disconnected from the power source throughout the initial set-up, exceptwhen specified in the instruc

Page 710737 100801OPERATING CONTROLSON/OFF SWITCHPlacing the "ON/OFF" switch in the "OFF" lower position stops brewing. Stopping

Page 8TROUBLESHOOTINGA troubleshooting guide is provided to suggest probable causes and remedies for the most likely problemsencountered. If the pro

Page 9TROUBLESHOOTING (cont.)PROBLEMBrew cycle will not start (cont.)Water is not hotPROBABLE CAUSEREMEDY10737 120800Refer to Service - ON/OFF Switchf