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 interval 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.

2.Setting batch sizes. To set a batch volume, first check that the SET/LOCK switch is in the “SET” position 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(s), turn selector switch to positions that have yet to be set, and repeat batch setting procedure until all batch sizes are set.

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

3.Setting programming disable feature. If it becomes necessary to prevent anyone from changing brew times once programmed, you can set 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.

THERMOSTAT

In most locations the thermostat should be turned to the full clockwise postion (200° F) for optimum brewing temperature. In areas of high altitude you may have to turn it down (counterclockwise) to prevent boiling.

DUAL VOLT SWITCH

 

 

SET

THERMOSTAT KNOB

LOCK

 

 

SET/LOCK SWITCH

FIG 11-1

 

Page 11

NOTICE

Brew water temperature is factory set at 200° F (93.3° C) Areas of high altitude will require lowering this tempera- ture to prevent boiling. This chart should be used as a guide when readjusting the brew water temperature.

 

Altitude

Boiling point

Recommended

 

 

of water

water temperature

 

(Feet)

° F

° C

° F

° C

 

-1000

213.8

101.0

200

93.3

 

 

 

-500

212.9

100.5

200

93.3

 

 

 

0

212.0

100.0

200

93.3

 

 

 

500

211.1

99.5

200

93.3

 

 

 

1000

210.2

99.0

200

93.3

 

 

 

1500

209.3

98.5

200

93.3

 

 

 

2000

208.4

98.0

200

93.3

 

 

 

2500

207.4

97.4

200

93.3

 

 

 

3000

206.5

96.9

199

92.8

 

 

 

3500

205.6

96.4

198

92.2

 

 

 

4000

204.7

95.9

197

91.7

 

 

 

4500

203.8

95.4

196

91.1

 

 

 

5000

202.9

94.9

195

90.6

 

 

 

5500

201.9

94.4

195

90.6

 

 

 

6000

201.0

93.9

194

90.0

 

 

 

6500

200.1

93.4

193

89.4

 

 

 

7000

199.2

92.9

192

88.9

 

 

 

7500

198.3

92.4

191

88.3

 

 

 

8000

197.4

91.9

190

87.8

 

 

 

8500

196.5

91.4

189

87.2

 

 

 

9000

195.5

90.8

188

86.7

 

 

 

9500

194.6

90.3

187

86.1

 

 

 

10000

193.7

89.8

186

85.6

 

 

 

35665.0000A 05/04 © 2004 Bunn-O-Matic Corporation

 

 

 

 

 

 

 

 

 

41721 080310

 

Page 11
Image 11
Bunn CWTF, CT service manual Thermostat Knob