Bunn CWT-TSR, CW-APS service manual Service, Component Access, Contents

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SERVICE

 

This section provides procedures for testing and

 

replacing various major components used in this

 

brewer should service become necessary. Refer to

 

Troubleshooting for assistance in determining the

 

cause of any problem.

 

WARNING - Inspection, testing, and repair of electri-

 

cal equipment should be performed only by qualified

 

service personnel. The brewer should be unplugged

 

when servicing, except when electrical tests are re-

 

quired and the test procedure specifically states to

 

plug-in the brewer.

 

COMPONENT ACCESS

 

WARNING - Disconnect the brewer from the power

CW-APS

source before the removal of any panel or the replace-

ment of any component.

 

All components are accessible by the removal of

 

the top cover and front inspection panel.

 

The top cover is attached with one #4-40 screw.

 

The front inspection panel is attached with six #6-

 

32 screws on APS and TS Models and eight #6-32

 

screws on and TSR Models

 

Contents

CWT-TS

 

Control Thermostat ............................................. 16

 

Limit Thermostat ................................................ 17

 

ON/OFF Switch .................................................... 18

 

Solenoid (Inlet) ................................................... 19

 

Start Switch (Brew) ............................................ 20

 

Tank Heater ........................................................ 21

 

Tank Heater Switch ............................................. 23

 

Timer (Early Models) .......................................... 25

 

Digital Timer (Late Models) ................................ 27

 

Wiring Diagrams .................................... 29 thru 33

 

 

CWT-TSR

 

P1126.30

 

FIG. 1 COMPONENT ACESS

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10690 062300

 

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Contents CWT-TSR Introduction WarrantyUser Notices Models CW-APS & CWT-TS Electrical RequirementsPlumbing Requirements Electrical Hook-UpModels CWTF-APS, CWTF-TS CWTF-TSR Plumbing RequirementsEarly MO Dels W/OUT Fauc ET Third Type Models W/FAUCET8A.Models CWA-PS & CW-TS Initial SET-UP4A.Models CW-APS & CW-TS 6A.Models CW-APS & CW-TSOperating Controls Adjusting Brew VolumesON/OFF Switch Start SwitchCleaning Coffee Brewing5A.Models CW-APS & CW-TS Must be open TroubleshootingProblem Probable Cause Remedy Brew cycle will not start CWT No waterTSR TroubleshootingProblem Probable Cause Remedy CWTF-TS, CWT-TSR &CWTFCWTF-TSR ProblemDispenser Spitting or excessive steaming Dripping from sprayheadBeverage overflows dispenser Control Thermostat Syphon System Lime Build-upCWTF-TS, CWT-TSR, CWTF-TSR CWT-APS, CWTF-APS, CWT-TSRemove and clean lime off the tank heater. See CWT-TS, CWTF-TS, CWT-TSR CWTF-TSRBrewer is making unusal noises Tank Heater Service Component AccessContents Control Thermostat ServiceLimit Thermostat Service Control ThermostatON/OFF Switch Test Procedures Disconnect the brewer from the power source Solenoid ValveLocation Start Switch Terminals Start SwitchTank Heater Tank HeaterService Tank Heater Tank Heater Switch Tank Heater SwitchTank Heater Switch Terminals Service Tank Heater SwitchDisconnect the black and white wires to the sole- noid Service TIMEREarly ModelsOLD Style Service TimerIf voltage is as described, proceed to #7 Digital Brew Timer Late ModelsTimer Setting Service Digital Brew Timer Late Modelscont10690 10690 10690 10690 10690