Bunn STF Coffeemaker User Manual


 
Page 25
P2037
FIG. 17 DIGITAL TIMER WIRING
29251 011501
Timer Setting:
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
volumes.
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
(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 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 imme-
diately 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). 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 ON/OFF switch in the
"ON" 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 sec-
onds 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".
SERVICE (cont.)
DIGITAL BREW TIMER (Late Models)(cont.)
TL1 - WHI/RED to ON/OFF Switch
TL2 - WHI to Terminal Block and Warmer
element (120V two-pole, 120/208V
or 120/240V three pole terminal block)
or
RED to Terminal Block and Warmer
element (200V or 240V two pole ter-
minal block)
TL3 - WHI/ORN to Start Switch (Top)
TL4 - WHI/GRN to Solenoid Valve or Relay
Terminal B
TL5 - WHI/YEL to Start Switch (Bottom)
NOTE: Several ounces of water will continue to syphon
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, volumes 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.
NOTE: To relocate a rear-mounted digital brew timer to
the front of the brewer, order kit number 32005.0000
for 120/240V 3-wire models. Order 32005.0001 for
200V-240V 2-wire models. These kits have the parts
necessary to relocate the timer.