Bunn TWF SERVICE cont, DIGITAL BREW TIMER HOT COFFEE - Late Modelscont, Digital Timer Wiring

SERVICE (cont.)

DIGITAL BREW TIMER (HOT COFFEE - Late Models)(cont.)

1.Modifying brew volumes. To modify a brew vol- ume, first check that the SET/LOCK switch is in the “SET” position on the circuit board.

To increase a brew volume, place the TEA/OFF/ COFFEE switch in the “COFFEE” position, press and hold the START switch until three clicks are heard. Release the switch and press it again one or more times. (Failure to release the switch within two sec- onds after the third click causes the volume setting to be aborted and previous volume setting will remain in memory.) Each time the switch is pressed, two sec- onds are added to the brew time period. Allow the brew cycle to finish in order to verify that the desired volume has been achieved.

To decrease a brew volume, place the TEA/OFF/ COFFEE switch in the “COFFEE” position, press and release the START switch once for every two-second interval to be removed from the total brew time pe- riod; then immediately press and hold down the START switch until three clicks are heard. Release the switch. (Failure to release the switch within two seconds af- ter the third click causes the volume setting to be aborted and previous volume setting will remain in memory). Allow the brew cycle to finish in order to verify that the desired volume has been achieved.

2.Setting brew volumes. To set a brew volume, first check that the SET/LOCK switch is in the “SET” position on the circuit board. Place the TEA/OFF/COF- FEE switch in the “COFFEE” position, press and hold the START switch until three distinct clicks are heard and then release the switch. (Failure to release the switch within two seconds after the third click causes the volume setting to be aborted and previous vol-

ume setting will remain in memory.)

View the level of the liquid being dispensed. When the desired level is reached, turn the TEA/OFF/COF- FEE switch to “OFF”.

NOTE: Several ounces of water will continue to sy- phon from the tank after turning the switch “OFF”. The brewer remembers this volume and will continue to brew batches of this size until the volume setting procedure is repeated.

NOTE: When brewing coffee, volume will decrease due to absorption by the coffee grounds.

3.Setting programming disable feature. If it be- comes necessary to prevent anyone from changing brew time once programmed, you can set the SET/ LOCK switch to the “LOCK” position. This will pre- vent any further programming until switch is once again put into the “SET” position.

TL1 - WHI/RED to Hot Coffee Solenoid and WHI/RED to TEA/OFF/COFFEE Switch TL2 - WHI to Power Cord (120V Models) or

WHI to Terminal Block (120/208V Models) TL3 - WHI/ORN to START Switch

TL4 - WHI/GRN to Hot Coffee Solenoid TL5 - WHI/YEL to START Switch

FIG. 9 DIGITAL TIMER WIRING

P2037

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