Proofer Temperature Control Sensor, How To Replace - Nu-Vu SUB-123 Owner's Manual

SERVICE AND REPLACEMENT GUIDE
B. Remove the Side Access Panel [74] from the left side of your unit. Carefully follow the Sensor
cable to where it passes in through the side of the Oven compartment. Remove the Oven
Temperature Control Sensor from the mounting bracket on the Oven Side Wall [53] and pull the
old Sensor and its cable out of the Oven. Remove and save the fiberglass sheathing.
C. Uncoil the new Control Sensor and cable, using care not to kink or twist it in any way!
D. Carefully feed the Sensor end of the new cable through the fiberglass sheathing and into the Oven
compartment. Secure the Sensor in the mounting bracket on the Side Wall.
E. Connect the two terminals at the end of the Sensor cable to the Oven Temperature Control Circuit
Board. Secure the fiberglass sheathing on the sensor cable so that the cable is completely covered
and the sheathing does not move back and forth to expose the cable.
IMPORTANT: THE RED LEAD FROM THE SENSOR CABLE MUST BE INSTALLED ON
THE TC "-" TERMINAL FOR PROPER OPERATION OF THE SENSOR!
F. Seal the Sensor cable on both sides where it passes through the Oven wall with a high-temperature
silicone or gasket sealant.
G. Replace the Outside Top, Side Access Panel, and Control Panel. Be careful not to pull or pinch
any wires while replacing these panels.
H. Restore electrical power to the unit and test the replacement Temperature Control Sensor for
proper operation. NU-VU
operation. It may be necessary to adjust the Temperature Control (refer to TEMPERATURE
CONTROL, How To Adjust).

PROOFER TEMPERATURE CONTROL SENSOR, How To Replace:

MAKE SURE ALL POWER TO THE UNIT IS OFF. FAILURE TO DO SO MAY CAUSE
SEVERE EQUIPMENT DAMAGE OR PERSONAL INJURY!
A. Remove the Control Panel on the face of the unit to expose the wiring connections for the Proofer
Temperature Control Sensor [9]. Locate the Proofer Temperature Control Circuit Board [8] and
disconnect the Sensor wires from the Circuit Board.
B. Remove the Side Access Panel [74] from the left side of your unit. Carefully follow the Sensor
cable down the side of the unit and through the Proofer wall to where both Proofer Sensors are
located. Remove the Proofer Temperature Control Sensor from the mounting bracket and pull the
old Sensor and its cable out through the Proofer wall. Carefully pull the old sensor and cable from
the fiberglass sheathing.
C. Uncoil the new Control Sensor and cable, using care not to kink it in any way.
D. Starting at the Control Circuit Board, carefully feed the Sensor end of the new cable through the
fiberglass sheathing and into the Proofer compartment. Secure the Sensor in the mounting bracket
on the inside of the Proofer.
E. Connect the two terminals at the end of the Sensor cable to the Oven Temperature Control Circuit
Board. Secure the fiberglass sheathing on the sensor cable so that the cables are completely
covered and the sheathing does not move back and forth to expose the cables.
IMPORTANT: THE RED LEAD FROM THE SENSOR CABLE MUST BE INSTALLED ON
THE TC "-" TERMINAL FOR PROPER OPERATION OF THE SENSOR!
F. Use a high-temperature silicone or gasket sealant to seal the Sensor cable from both sides where it
passes through the side of the Proofer.
G. Replace the Control Panel and Side Access Panel, being careful not to pull or pinch any wires
while replacing these panels.
®
NU-VU FOOD SERVICE SYSTEMS
34
page
®
recommends that any replacement Control Sensor be tested for proper
Sales Fax (906) 863-5889 ♦ Service Fax (906) 863-6322
SUB–123 OWNER'S MANUAL
(refer to Fig. #8 on page 27)
MENOMINEE, MICHIGAN 49858-0035
(800) 338-9886