Bunn CRT5 ユーザーズマニュアル
Page 27
DIGITAL BREW TIMER (Late Models)
P2186.45
FIG. 20 DIGITAL BREW TIMER
SERVICE (cont.)
Location:
The timer is located inside the front of the trunk on
the upper right side of component bracket.
Test Procedure
NOTE: Do not remove or install wires while timer board
is installed. Pressure applied to one side may cause
damage to the board.
1. Disconnect the brewer from the power source and
NOTE: Do not remove or install wires while timer board
is installed. Pressure applied to one side may cause
damage to the board.
1. Disconnect the brewer from the power source and
remove the front access panel.
2. Remove the two #8-32 screws securing circuit
board to the mounting bracket.
3. Remove circuit board and spacers (as required).
4. With a voltmeter, check the voltage across termi-
4. With a voltmeter, check the voltage across termi-
nals TL1 and TL2 when the "ON/OFF" switch is in
the "ON" position. Connect the brewer to the power
source. The indication must be:
a) 120 volts ac for two wire 120 volt models and
three wire 120/240 volt models.
b) 200 to 240 volts ac on two wire 200 volt or 240
volt models.
the "ON" position. Connect the brewer to the power
source. The indication must be:
a) 120 volts ac for two wire 120 volt models and
three wire 120/240 volt models.
b) 200 to 240 volts ac on two wire 200 volt or 240
volt models.
5. Disconnect the brewer from the power source.
If voltage is present as described, proceed to #6.
If voltage is not present as described, refer to the
Wiring Diagrams and check the brewer wiring har-
ness.
If voltage is not present as described, refer to the
Wiring Diagrams and check the brewer wiring har-
ness.
6. Disconnect the white/blue wire from terminal TL3
and the blue/black wire from terminal TL5. With a
voltmeter, check for continuity across the two
wires when the "ON/OFF" switch is in the "ON"
position (upper) and the START switch is pressed.
Connect the brewer to the power source. The
indication must be:
a) 120 volts ac for two wire 120 volt models and
three wire 120/240 volt models.
b) 200 to 240 volts ac for two wire 200 volt or 240
volt models.
voltmeter, check for continuity across the two
wires when the "ON/OFF" switch is in the "ON"
position (upper) and the START switch is pressed.
Connect the brewer to the power source. The
indication must be:
a) 120 volts ac for two wire 120 volt models and
three wire 120/240 volt models.
b) 200 to 240 volts ac for two wire 200 volt or 240
volt models.
If continuity is present as described, reconnect the
wires and proceed to #7.
If continuity is not present as described, refer to the
Wiring Diagrams and check the brewer wiring har-
ness.
wires and proceed to #7.
If continuity is not present as described, refer to the
Wiring Diagrams and check the brewer wiring har-
ness.
7. With a voltmeter, check the voltage across termi-
nals TL1 and TL4 when the "ON/OFF" switch is in
the "ON" position. Connect the brewer to the power
source. The indication must be 0 volts.
the "ON" position. Connect the brewer to the power
source. The indication must be 0 volts.
If voltage is as described, proceed to #8.
If voltage is not as described, disconnect the brewer
from the power source and replace the timer.
If voltage is not as described, disconnect the brewer
from the power source and replace the timer.
8. With a voltmeter, check the voltage across termi-
nals TL1 and TL4 when the "ON/OFF" switch is in
the "ON" position. Connect the brewer to the power
source and press the "START" switch. The indica-
tion must be as follows:
a) 120 volts ac for two wire 120 volt models and
three wire 120/240 volt models.
b) 200 to 240 volts ac on two wire 200 volt or 240
volt models.
the "ON" position. Connect the brewer to the power
source and press the "START" switch. The indica-
tion must be as follows:
a) 120 volts ac for two wire 120 volt models and
three wire 120/240 volt models.
b) 200 to 240 volts ac on two wire 200 volt or 240
volt models.
If voltage is present as described, the brew timer is
operating properly. Reset the timer as required, to
obtain the desired brew volume.
If voltage is not present as described, disconnect the
brewer from the power source and replace the timer.
operating properly. Reset the timer as required, to
obtain the desired brew volume.
If voltage is not present as described, disconnect the
brewer from the power source and replace the timer.
Removal and Replacement:
1. Remove the two #8-32 screws securing circuit
1. Remove the two #8-32 screws securing circuit
board to the mounting bracket.
2. Remove circuit board and spacers (as required).
3. Remove all wires from the timer.
3. Remove all wires from the timer.
10478 061500