Nu-Vu OP-2FM - Proofer Sensor Replacement

OP–2FM OWNER'S MANUAL SERVICE AND REPLACEMENT GUIDE
NU–VU® FOOD SERVICE SYSTEMS PO BOX 35 MENOMINEE, MICHIGAN 49858-0035
(800) 338-9886 SALES FAX (906) 863-5889 • SERVICE FAX (906) 863-6322 page 33
G. Seal the Sensor cable where it passes through the side of the Oven from both sides with a high-
temperature silicone or gasket sealant.
H. Replace the Side Access Panel. Be careful not to pull or pinch any wires when replacing the
panel.
I. NU-VU
®
recommends that any replacement Control Sensor be tested for proper operation. It
may be necessary to adjust the Temperature Control (refer to TEMPERATURE CONTROL,
How To Adjust).
PROOFER TEMPERATURE OR HUMIDITY 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 Side Access Panel [76] from the Control side of your unit and locate the
appropriate Proofer Control Circuit Board behind the Proofer Control Access Panel (refer to
Figure #7 on page 25). The Temperature Board is on top, the Humidity Board is on the bottom.
B. Follow the braided metal cable from the Circuit Board to locate the Temperature Control Sensor
[9] or the Humidity Control Sensor [11] on the Proofer side wall behind the Side Rack/Ladder
[63]. Remove the appropriate Sensor from the mounting bracket.
C. Carefully pull the old Sensor and its cable through the Proofer wall.
D. Unplug the Sensor wires from its Circuit Board and remove the old Sensor and cable from the
unit.
E. Gently uncoil the new Sensor and its braided cable, using extreme care not to kink, twist or
damage it in any way!
F. Feed the Sensor end of the new cable through the Proofer side wall and secure the Sensor in the
mounting bracket.
G. Plug the wire terminals at the other end of the Sensor cable into the connections on the
appropriate Control Circuit Board.
H. Use a high-temperature silicone or gasket sealant to seal the Sensor cables both inside and out
where they pass through the Proofer side wall.
I. Replace the Side Access Panel. Be careful not to pull or pinch any wires when replacing the
panel.
J. NU–VU
®
recommends that any replacement Temperature Control Sensor be tested for proper
operation. It may be necessary to adjust the Temperature Control (refer to TEMPERATURE
CONTROL, How To Adjust).
IMPORTANT: THE RED LEAD FROM THE SENSOR CABLE MUST BE
INSTALLED ON THE TC “-“ TERMINAL!
IMPORTANT: THE RED LEAD FROM THE SENSOR CABLE MUST BE
INSTALLED ON THE TC “-“ TERMINAL!