Vollrath Stoelting F231, Service Manual, Page: 49 / 63

Service Manual #513659 41 Model F231
SPIGOT SWITCH REPLACEMENT
1. Remove the header panel.
2. Remove the dispense rate adjuster knob located
below the header panel. (Refer to Figure 6-6)
3. Remove the two Phillips head screws that attach
the spigot cam assembly to the panel. Remove
the assembly.
4. Disconnect the connector from the switch and
remove the switch..
5. Install the replacement switch onto the handle
assembly. Do not fully tighten the retaining screws
at this time.
6. Using a pencil, mark the spigot glide 1/4” from
the spigot housing. Adjust the switch to activate
when the spigot handle moves the glide to the
mark.
7. Fully tighten the retaining screws.
8. Attach the connector to the spigot switch.
9. Position the spigot handle assembly in the
electrical box and fasten securely with the two
Phillips head screws.
10. Replace the dispense rate adjuster knob and
tighten.
11. Replace the header panel and secure with the
two Phillips head screws.
Figure 6-6 Spigot Switch Replacement
6.8 TEMPERATURE CONTROL SENSOR
The temperature control sensor is a thermistor used to
sense the temperature of the suction line. As the suction
line temperature increases, the internal resistance of
the thermistor will decrease. Refer to Figure 6-7 for the
relationship between sensor resistance and temperature.
The IntelliTec control board monitors this value. In “Serve
Mode”, when the temperature of the sensor equals the
Cut In T value on the control, a freezing cycle will start.
When troubleshooting a sensor, refer to the wiring diagram
and remove the wires from the control board. Measure
the resistance of the sensor and compare it with the table
below. If the resistance is not within this range, replace it.
Figure 6-7 Temperature Sensor Resistance
(10K Ohms)
°F Resistance °F Resistance
-22 176950 40 26100
-20 165200 42 24725
-18 154300 44 23400
-16 144200 46 22175
-14 134825 48 21000
-12 126125 50 19900
-10 118050 52 18875
-8 110550 54 17900
-6 103550 56 17000
-4 97075 58 16125
-2 91025 60 15325
0 85400 62 14550
2 80150 64 13825
4 75275 66 13150
6 70725 68 12500
8 66475 70 11875
10 62500 72 11300
12 58800 74 10750
14 55325 76 10250
16 52100 78 9750
18 49075 80 9300
20 46250 82 8850
22 43600 84 8450
24 41125 86 8050
26 38800 88 7675
28 36625 90 7325
30 34575 92 7000
32 32675 94 6675
34 30875 96 6375
36 29175 98 6100
38 27600 100 5825