Bunn CWT Service Manual download pdf (Page 26)

Page 26

4. Attach all wires to the replacement timer board

prior to installation to the component mounting

bracket. Refer to FIG. 22 when reconnecting the

wires.

5. Install new circuit board with spacers (as required)

to the component mounting bracket.

6. Adjust the timer as described below.

Timer Setting (Digital):

NOTE: Prior to setting or modifying volumes, check

that the brewer is connected to water supply, the

tank is properly ﬁlled, and a funnel and server are in

place.

NOTE: All volume settings must be done with the

sprayhead installed.

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 ON/OFF

switch in the “ON” 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 re-

lease the switch within two seconds 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 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 brew volume, place the ON/OFF

switch in the “ON” position, press and release the

START switch once for every two-second interval to

be removed from the total brew time period; then im-

mediately press and hold down the START 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). Al-

low 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 ON/OFF switch

in the “ON” position. Models Single CW only, place the

selector switch in the half 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 volume

setting will remain in memory.

View the level of the liquid being dispensed. When

approximately 50 ounces is reached, turn the ON/OFF

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 prevent

any further programming until switch is once again

put into the “SET” position.

BLU/BLK wire from TL5 to P1

WHI/GRN wire from TL4 to Solenoid

WHI/BLU wire from TL3 to Solenoid

WHI wire from TL2 to P2

BLK wire from TL1 to P3

FIG. 22 DIGITAL TIMER WIRING

P2037

SERVICE (cont.)

DIGITAL BREW TIMER (Late Models)(cont.)

10841 020503

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Bunn CWT Service Manual Page 26

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