Mueller Bakery Chiller, Models PMC 40/50 and PMC 70/120 Effective February 23, 1999
Installation and Operation Manual, Part No. 9842311 Revised October 17, 2019
4.5 CHANGING THE CALIBRATION OFFSET ON THE TEMPERATURE CONTROLLER (CONTINUED)
6. Press the “SEL” key to save the change made. The controller will once again display “PUOF.”
7. Press and hold the “SEL” key for five seconds until the setpoint value is displayed, indicted by a small “SV”
illuminating in the upper left corner of the controller.
8. Press the “SEL” key to display the current tank temperature.
NOTE: If the “SEL” key is not pressed within approximately 25 seconds, the controller will time out and return
to the current temperature, storing the new setpoint or any changes made.
4.6 CHANGING UNITS OF MEASURE ON THE TEMPERATURE CONTROLLER
IMPORTANT: Once the display has been changed to the desired unit of measure, either “F” for Fahrenheit
or “C” for Celsius, the temperature setpoint must also be changed to match the units (e.g., 36°F or 2.2°C).
Please contact Paul Mueller Company for assistance.
1. Unlock the controller as in Section 4.3.
2. Press and hold the “SEL” key for seven seconds until “P-F” is displayed.
3. Press the “SEL” key once to display the current temperature unit of measure, either “F” for Fahrenheit or “C”
for Celsius.
4. Press the “” up key or the “” down key until either “F” or “C” is displayed.
5. Press the “SEL” key to save the change made. Controller will once again display “P-F.”
6. Press and hold the “SEL” key for five seconds until the setpoint value is displayed, indicted by a small “SV”
illuminating in the upper left corner of the controller.
7. Press the “SEL” key to display the current tank temperature.
NOTE: If the “SEL” key is not pressed within approximately 25 seconds, the controller will time out and return
to the current temperature, storing the new setpoint or any changes made.
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