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7) Wipe down the oat switch assembly's housing, shaft, oat, and retainer rod with a
mixture of 1 part Hoshizaki "Scale Away" and 25 parts warm water. Clean the inside of
the rubber boot and hose with the cleaning solution. Rinse the parts thoroughly with
clean water.
8) Reassemble the oat switch assembly and replace it and the rubber boot in their correct
positions. Reconnect the vent tube and the ush tube.
9) Move the control switch to the "ICE" position.
10) Replace the insulation panel and front panel in their correct positions.
E. Thermistor Check
To check thermistor resistance, follow the steps below.
1) Turn off the power supply.
2) Remove the front panel, then move the control switch to the "OFF" position.
3) Remove the control box cover.
4) Remove the thermistor. See "V.K. Removal and Replacement of Thermistor."
5) Immerse the thermistor sensor portion in a glass containing ice and water for 2 or
3 minutes.
6) Remove the white thermistor connector from the control board WHITE K3 connector
and check the resistance between thermistor leads. Normal reading is within 4.7 to
6.2 kΩ. If outside the normal reading, replace the thermistor. If inside the normal
reading, continue to the next step.
7) Replace the thermistor in its correct position. See "V.K. Removal Replacement of
Thermistor."
8) Reconnect the white thermistor connector to the control board WHITE K3 connector.
9) Replace the control box cover in its correct position, then turn on the power supply.
10) Move the control switch to the "ICE" position.
11) Once the harvest cycle starts, begin timing the harvest cycle.
12) The harvest timer should expire and terminate the harvest cycle within 2 to 3 minutes. If
the harvest timer does not expire and terminate the harvest cycle, the harvest timer is
bad and the control board should be replaced. See "V.O. Removal and Replacement of
Control Board."