TEMPERATURE PROBE TEST (SG4D/SG6D)
Certain procedures in this section require electrical test or measurements while power is applied to the
machine. Exercise extreme caution at all times. If test points are not easily accessible, discern power, attach
test equipment and reapply power to test.
Disconnect the electrical power to the machine and follow lockout / tagout procedures.
Test Steps
1.
Remove the right side panel as outlined under Cover and Panels in Removal and Replacement of Parts.
2.
Place a shielded thermocouple in the geometric center of the oven cavity and determine the temperature in
the oven cavity.
3.
Remove the probe lead wires from the solid state temperature controller.
4.
Test the probe with an ohmmeter.
A.
If the measured resistance values are inside the given tolerance, then the probe is functioning properly.
B.
If the measured resistance values are outside the given tolerance, then replace the probe and make sure
wires are secured to the terminals of the temperature controller. Recheck the temperature by preforming
step 2.
1)
Check the oven for proper operation.
5.
Reverse Procedure to install.
TEMP (°F)
OHMS*
77
90,000
240
4,077
260
3,016
280
2,266
300
1,726
320
1,332
340
1,041
360
822
380
656
400
529
425
424
450
334
475
266
(*) Resistance in ohms ± 10%
SG4 & SG6 Series Full Size Gas Convection Ovens - SERVICE PROCEDURES AND ADJUSTMENTS
F35626 Rev. B (1118)
Page 28 of 56
