Bunn CWT Service Manual

OPERATING & SERVICE MANUALBUNN-O-MATIC CORPORATIONPOST OFFICE BOX 3227SPRINGFIELD, ILLINOIS 62708-3227PHONE: (217) 529-6601 FAX: (217) 529-66441

Page 10TROUBLESHOOTING (cont.)PROBLEMBrew cycle will not start (cont.)(CWT-APS, CWTF-APS, CWT-TS,CWTF-TS, CWT-TSR &CWTF-TSR)Water is not hotPROBAB

Page 11TROUBLESHOOTING (cont.)PROBLEMInconsistent beverage level in dis-penserConsistently low beverage level inthe dispenser (CWT-APS, CWTF-APS, CWT-

Page 12TROUBLESHOOTING (cont.)PROBLEMSpitting or excessive steaming(cont.)Dripping from sprayheadWater flows into tank continuously(ON/OFF Switch &quo

Page 13TROUBLESHOOTING (cont.)PROBLEMWeak beverageDry coffee grounds remain in thefunnelBrewer is making unusal noises(CWT-APS, CWTF-APS, CWT-TS,CWTF-

Page 14TROUBLESHOOTING (cont.)PROBLEMBrewer is making unusal noises(cont.)(CWT-APS, CWTF-APS,CWT-TS, CWTF-TS, CWT-TSR,CWTF-TSR)Brewer is making unusal

Page 15CWT-TSRSERVICEThis section provides procedures for testing andreplacing various major components used in thisbrewer should service become neces

Page 16SERVICE (cont.)CONTROL THERMOSTATLATEMODELSLocation:Early Models: The control thermostat is mountedon a bracket inside the hood on the right si

Page 17SERVICE (cont.)P1129LIMIT THERMOSTATLocation:The limit thermostat is located inside the rear ofthe hood on the tank lid.Test Procedures:1. Disc

Page 18SERVICE (cont.)ON/OFF SWITCHLocation:The ON/OFF switch is located on the left front ofthe hood.Test Procedure:1. Disconnect the brewer from the

Page 19SERVICE (cont.)SOLENOID VALVEP1127.40Location:The solenoid valve is located inside the trunk onthe center lower part of the component bracket.T

Page 2INTRODUCTIONThis equipment will brew a half-gallon batch of coffee into an awaiting dispenser. It can be easily configuredfor either pour-over

Page 20SERVICE (cont.)START SWITCHP0150.50Location:The start switch is located in the front of thehood just to the right of center.Test Procedure:1. D

Page 21TANK HEATERP1127.40Location:The tank heater is located inside the tank andsecured to the tank lid.Test Procedures:1. Disconnect the brewer from

Page 22SERVICE (cont.)TANK HEATER (Cont.)P1134.6510690 06230010. Install new tank heater with gaskets on the tank lidand secure with two hex nuts.11.

Page 23SERVICE (cont.)TANK HEATER SWITCHP1127.40Location:The tank heater switch is located on the rear ofthe brewer on the upper left side of the trun

Page 24SERVICE (cont.)P113510690 062300TANK HEATER SWITCH (cont.)13. Remove the plastic facenut, hex facenut and theswitch indicator/guard bracket tha

Page 25TIMER(Early Models)P1127.40Location:The timer is located inside the front of the trunkon the top of component bracket.Test Procedure.1. Disconn

Page 26SERVICE (cont.)TIMER (cont.)P113610690 062300If voltage is present as described, the brew timer isoperating properly. Reset the timer dial as r

Page 27DIGITAL BREW TIMER (Late Models)P1127.40FIG. 18 DIGITAL BREW TIMERLocation:The timer is located inside the front of the trunk onthe top of the

Page 28BLU/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 wire from T

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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

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

Page 5PLUMBING REQUIREMENTS (cont.)SECOND TYPE MODELS W/FAUCETTHIRD TYPE MODELS W/FAUCETModels CWTF-APS, CWTF-TS CWTF-TSR:1. Flush the water line and

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

Page 710690 062300ADJUSTING BREW VOLUMESCAUTION - Disconnect the power source from the brewer prior to the removal of any panel for the replacementor

Page 8COFFEE BREWING1. Insert a BUNN® filter into the funnel.2. Pour the fresh coffee into the filter and level the bed of grounds by gently shaking.3

Page 9TROUBLESHOOTINGA troubleshooting guide is provided to suggest probable causes and remedies for the most likely problemsencountered. If the prob