Bunn C User Manual

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Summary of Contents

Page 1 - CWT, CWTF

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

Page 2 - 10841 042401

Page 10TROUBLESHOOTING (cont.)PROBLEMInconsistent beverage level indispenserConsistently low beverage levelin the dispenser (CT, CTF, CWT,CWTA, CWTB,

Page 3 - USER NOTICES

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

Page 4 - PLUMBING REQUIREMENTS

Page 12TROUBLESHOOTING (cont.)PROBLEMWeak beverageDry coffee grounds remain inthe funnelBrewer is making unusal noises(CT, CTF, CWT, CWTA, CWTB,CWTF,

Page 5

Page 13TROUBLESHOOTING (cont.)PROBLEMBrewer is making unusal noises(cont.)(CT, CTF, CWT, CWTA,CWTB, CWTF, CWTFA & CWTFB)Brewer is making unusal no

Page 6 - ADJUSTING BREW VOLUMES

Page 14MODEL CWTCAUTION :WARMERS AND SURFACES ARE HOTCAUTIONCAUTIONDISCARD DECANTERDISCARD DECANTERIF:IF:. CRACKED. CRACKED. SCRATCHED. SCRATCHED. BOI

Page 8 - TROUBLESHOOTING

Page 16BLU to BLU Wire fromLimit Thermostat BLK to BLK Wire fromTank Heater(Brewers W/Out Faucet)BLK toThermal Cut-Off from TankHeater (Brewers with

Page 9

Page 17CAUTIONCAUTIONDISCARD DECANTERDISCARD DECANTERIF:IF:!BUNN®C SERIESREADY LOWERPOUR IN WATER ONLYCAUTIONCAUTIONDISCARD DECANTERDISCARD DECANTER

Page 10 - 10841 071000

Page 18Connect wire to Terminal #1 as follows:Lower Warmer... WHI/REDOne Top Warmer ...

Page 12 - 10841 012600

Page 2WARRANTYBunn-O-Matic Corp. (“Bunn”) warrants the equipment manufactured by it to be commercially free from defectsin material and workmanship ex

Page 13

Page 20SERVICE (cont.)START SWITCH - CT & CWTLocation:The start switch is located in the center frontof the hood.Test Procedure:1. Disconnect the

Page 14 - Troubleshooting

Page 21SERVICE (cont.)TANK HEATER (Cont.)c) 200 to 230 volts ac for two wire 200 or 230 voltmodels.3. Disconnect the brewer from the power source.If v

Page 15

Page 22SERVICE (cont.)TANK HEATER SWITCHLocation:The tank heater switch is located on the rearof the brewer on the upper left side of the trunk.Test P

Page 16

Page 23SERVICE (cont.)TANK HEATER SWITCH (cont.)switch indicator/guard bracket, hex facenut andplastic facenut.15. Reconnect the two black wires to th

Page 17 - 10841 091596

Page 24SERVICE (cont.)DIAL TIMER (Early Models) (cont.)with a voltmeter when the "ON/OFF" switch is inthe "ON" position (upper) a

Page 18 - Wiring Diagrams

Page 2510841 071000DIGITAL BREW TIMER (Late Models)P2203.45DIGITAL BREW TIMERSERVICE (cont.)Location:The timer is located inside the front of the trun

Page 19

Page 264. Attach all wires to the replacement timer boardprior to installation to the component mountingbracket. Refer to FIG. 21 when reconnecting t

Page 20 - WHI/RED to ON/OF

Page 27SERVICE (cont.)WARMER ELEMENT(S)Location:The warmer element(s) is located under thewarmer plate.Test Procedures:1. Disconnect the brewe

Page 21

Page 28P3BLKP1, P2, & P3 ARE PINS OF A POLARIZED THREE-PIN CONNECTOR.BLUBLU/BLKWHIBREWTIMERP1P2WHIOPTIONAL AUTOMATIC BREW CIRCUITSCHEMATIC WIRING

Page 22

Page 29P3P1, P2, & P3 ARE PINS OF A POLARIZED THREE-PIN CONNECTOR.BLUP1REDOPTIONAL AUTOMATIC BREW CIRCUITSCHEMATIC WIRING DIAGRAM CWTB10836.0002E

Page 23 - BLK to Limit Thermostat

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 24 - BLK to Solenoid Valve

Page 30P3P1, P2, & P3 ARE PINS OF A POLARIZED THREE-PIN CONNECTOR.BLUP1REDOPTIONAL AUTOMATIC BREW CIRCUITSCHEMATIC WIRING DIAGRAM CWTA10836.0003E

Page 25

Page 31P3BLKP1, P2, & P3 ARE PINS OF A POLARIZED THREE-PIN CONNECTOR.WHIBLKSOLBLU BLUWHIBREWTIMERP1P2WHIOPTIONAL AUTOMATIC BREW CIRCUITSCHEMATIC W

Page 26 - BLK wire from TL1 to P3

Page 3210841 042401READY INDICATORBLKBLUSW. & THERMOSTATP3BLKP1, P2, & P3 ARE PINS OF A POLARIZED THREE-PIN CONNECTOR.WHIBLKSOLBLU BLUWHIBREWT

Page 27

Page 4ELECTRICAL REQUIREMENTSCAUTION - The brewer must be disconnected from the power source until specified in Initial Set-Up.Model 15 has an attache

Page 28 - SINGLE PHASE

Page 5 MODELS W/OUT FAUCETModels CT, CWT, CTF & CWTF1. Flush the water line and securely attach it to the flare fitting on the strainer or tee.2

Page 29 - SCHEMATIC WIRING DIAGRAM CWTB

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

Page 30 - SCHEMATIC WIRING DIAGRAM CWTA

Page 7the switch is pressed, two seconds are added to the brew time period. Allow the brew cycle to finish in orderto verify that the desired volume h

Page 31 - CWTF, CWTFB NO WARMER

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

Page 32 - CWTFA NO WARMER

Page 9TROUBLESHOOTING (cont.)PROBLEMBrew cycle will not start (cont.)(CT, CTF, CWT, CWTA, CWTB,CWTF, CWTFA & CWTFB)Water is not hotPROBABL

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