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COMPONENT ACCESS (cont)
TEMPERATURE PROBE
Location:
The limit thermostats (Fig 11) are located under
the top cover on the tank lid assembly.
Test Procedures:
1. Disconnect the brewer from the power source.
2. Disconnect the wires from the limit thermostat.
3. With an ohmmeter, check for continuity across
the limit thermostat terminals.
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 termi-
nals.
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.
FIG 11 LIMIT THERMOSTATS
Limit Thermostats
LIMIT THERMOSTAT
Location:
The temperature probe (Fig 10) 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 J2 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 be-
tween 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 (and TCO on 200V
and 230V models).
If voltage is not present as described, proceed to
#4.
4. Disconnect temperature probe from J2 on control
board. Check the resistance across the two ter-
minals 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-
perature probe.
Removal and Replacement:
1. Disconnect the brewer from the power source.
2. Refer to instructions included in Temperature Probe
Kit #29327.0000 to replace Temperature Probe.
FIG 10 TEMPERATURE PROBE
Temperature Probe
41746 112008