Bunn TWF service manual Service, Component Access, Contents

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 disconnected from the power source when servicing, except when electrical tests are required and the test procedure spe- cifically states to plug-in the brewer.

COMPONENT ACCESS

WARNING - Disconnect the brewer from the power 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 rear inspection panel.

The top cover is attached with four #6-32 screws. Removal of the top cover will allow access to TEA/OFF/ COFFEE switch, start switch, brew timers, control thermostat, limit thermostat, thermal fuse and tank heater.

The rear inspection panel is attached with six #8- 32 screws. Remove of the rear panel will allow access to the brew solenoid valves and the dilution solenoid valve .195 GPM flow control and check valve.

Contents

P1959.60

FIG. 1 COMPONENT ACCESS

Brew Solenoid Valve (Hot Coffee)	15
Brew Solenoid Valve (Iced Tea)	16
Brew Timer (Hot Coffee- Early Models)	17
Digital Brew Timer (Hot Coffee-Late Models)	18
Brew Timer (Iced Tea - Early Models)	20
Digital Brew Timer (Iced Tea-Late Models)	21
Control Thermostat	23
Dilution Solenoid Valve	24
Limit Thermostat	25
TEA/OFF/COFFEE Switch	26
Start Switch	27
Tank Heater	28
Thermal Fuse	29
Half Batch Switch (Optional)	30
Wiring Diagrams	31
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