Rev 8/2014
PrecisionTemp, Inc • 11 Sunnybrook Drive • Cincinnati, Ohio, 45237 • 1-800-934-9690 •
fax 513-641-0733 55
SB-15 T-Mid Thermistor Change Procedure
Model: PT-200FT, PT-200RC & PT-56
Software version: All
Tools required: 9/16” Open end wrench
Adjustable wrench
Process:
1. Turn power off and turn off water supply at shut off valve outside of the
booster heater.
2. Remove old thermistor and disconnect from harness. CAUTION: Use
two wrenches, one on the hex (9/16”) of the thermistor and an adjustable
wrench on the hex located on the heat exchanger fitting. Failure to do so
may damage the heat exchanger.
3. Insert the end of the thermistor without electrical leads into the heat
exchanger until the heat shrink (black) on the thermistor touches the fitting
and tighten the fitting finger-tight. The final tightening should be done
using two wrenches as described in step 1.
4. Connect the thermistor to the wiring harness.
5. After installing the mid thermistor lock the dish machine into rinse mode
and check for normal operation. If the booster outgoing temperature
fluctuates more than 5 degrees from the set temperature perform the Auto
Calibration procedure.
6. If the Auto Calibration (see SB-7) procedure is needed be sure to use the
AutoCal specific to your type of unit (Recirculating or Flow Through),
check for correct software version.
Parts Kit List:
1854 T-Mid Thermistor
CPI Fitting
Reference Illustrations:
200-13 Thermistor Harness
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