Bunn TB6Q, TB3-LP, TB3Q-LP service manual Adjusting Brew Volumes

ADJUSTING BREW VOLUMES

NOTE: Check that the brewer is connected to water supply, the tank is properly filled, and a funnel and server are in place, prior to setting or modifying batch sizes.

1.To adjust concentrate volume on TB3/TB6 models, and dilution volume on TB3Q/TB6Q models: Modifying batch sizes. To modify a batch volume, first check that the SET/LOCK switch is in the “SET” position on the circuit board. If the brewer has a batch selector switch, position it to the size to be changed.

To increase a batch size, Press and hold the START or BREW switch until three clicks are heard. Re- lease the switch (Failure to release the switch within two seconds after the third click causes the volume setting to be aborted and previous volume setting will remain in memory) and press it again one or more times. Each time the switch is pressed, two seconds 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 batch size, Press and release the START or BREW switch once for every two-second in- terval to be removed from the total brew time period; then immediately press and hold down the START or BREW switch until three clicks are heard. Release the switch. (Failure to release the switch within two seconds after 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.

To save the new setting: To set a batch volume, first check that the SET/LOCK switch is in the “SET” po- sition on the circuit board. Press and hold the START or BREW switch until three distinct clicks are heard (this will take approximately ten seconds), 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 volume setting will remain in memory). View the level of the liquid being dispensed. When the desired level is reached, turn the ON/OFF switch to “OFF”. The brewer remembers this volume and will continue to brew batches of this size until the volume setting procedure is repeated. Empty server, flip selector switch to position that has yet to be set, and repeat batch setting procedure until both batch sizes are set.

2.To adjust concentrate volume on TB3Q/TB6Q models: Remove front access panel, adjust the needle valve counterclockwise to increase, clockwise to decrease.

NOTE: When brewing tea, batch volumes will decrease due to absorption by the tea leaves.

NOTE: For TB6/TB6-Q models, volume settings will be the same for left and right sides.

3.To set dilution volumes on TB3/TB6 models, disconnect brewer from the power source, remove the top cover, adjust the lower (dilution minutes) dial on the timer board.

4.Setting programming disable feature. If it becomes necessary to prevent anyone from changing brew times once programmed, disconnect brewer from the power source, remove the top cover, slide the SET/LOCK switch to the “LOCK” position. This will prevent any programming to be done.

NOTE: If the clicks can not be heard, lightly grip the incoming water line to feel when the valve cycles on and off.

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