Temperature Probe; Contactor - Bunn TITAN DUAL Service & Repair Manual

COMPONENT ACCESS (cont)
LIMIT THERMOSTATS (cont)
If continuity is present as described, the limit thermostat
is operating properly.
If continuity is not present as described, replace the
limit thermostat.
Removal and Replacement:
1. Remove the wires from limit thermostat terminals.
2 Remove the two #8-32 nuts securing the limit
thermostat to the tank lid and lift limit thermostat
off the studs.
3. Install the new limit thermostat onto the studs on
the tank lid and secure with original nuts.
4. Connect the wires to the limit thermostat.

TEMPERATURE PROBE

Location:
The temperature probe (Fig 5) is inserted into a
grommet in the tank lid assembly.
Test Procedures:
1. Disconnect the brewer from the power source.
2. With a DC voltmeter, check voltage across the black
and white wires at J13 on control board (Black
voltmeter probe to black wire, red voltmeter probe
to white wire). Connect the brewer to the power
source. The indication should be aproximately
between 4vdc cool to 1vdc at ready temperature.
3. Disconnect the brewer from the power source.
If voltage is present as described, circuit is working
correctly, check limit thermostat.
If voltage is not present as described, proceed to #4.
4. Disconnect temperature probe from J13 on con-
trol board. Check the resistance across the two
terminals of the temperature probe. The indication
should be aproximately between 10.5K cool to
870 at ready temperature.
If resistance is to specification, replace the control
board.
If resistance is not to specification, replace the tem-
RELEASED FOR PRODUCTION
DIR Num: 41747.0000
perature probe.
Removal and Replacement:
1. Disconnect the brewer from the power source.
2. Disconnect the temperature probe wires from J13
on the control board and pull probe from grommet
in tank lid.
3. Install new temperature probe into grommet and
connect wires to J13 on control board,

CONTACTOR

Location:
The contactor assembly (Fig 6) is located inside
the hood under the top cover.
Test Procedure:
1. Disconnect the brewer from the power source.
2. Disconnect the white wire and red/black wire from
the contactor coil.
3. With a voltmeter, check the voltage across the
white wire and red/black wire. Connect the brewer
to the power source.
volts ac for 120/208 and 120/240 volt models or
230 volts ac for 230/400 volt
4. Disconnect the brewer from the power source.
If voltage is present as described, proceed to #5.
If voltage is not present as described, refer to the Wir-
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12, December 2018
FIG 6 CONTACTOR
The indication must be 120
models.
41747 112608