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 retest.
1)
Check oven for proper operation.
5.
Reverse procedure to install.
TEMP (°F)
OHMS*
TEMP (°F)
OHMS*
77
90,000
360
822
240
4,077
380
656
260
3,016
400
529
280
2,266
425
424
300
1,726
450
334
320
1,332
475
266
340
1,041
(*) Resistance in ohms ± 10%
GAS VALVE PRESSURE CHECK
Disconnect the
electrical power to the machine and
follow lockout / tagout procedures.
1.
Turn gas supply off at manual shutoff valve.
2.
NOTE:
If right side panel is not accessible, this
component can be serviced by removing the
CONTROL PANEL.
3.
Remove the plug from the manifold pressure
port.
Fig. 42
4.
Install hose barb adapter and attach manometer
tube.
5.
Turn gas supply to the oven back on.
6.
Plug the unit in and turn the power switch ON.
7.
Set the temperature control to its highest setting
and allow burner to ignite.
NOTE:
The burner must be lit during test.
NOTE:
Accurate gas pressure readings can only be
made with the gas on and the burner lit.
GAS TYPE
PRESSURE READINGS (IN W.C.)
MANIFOLD
LINE
RECOMMENDED
MIN
MAX
Natural
5.0
8.0
6.0
14.0
Propane
10.0
11.0
11.0
NOTE:
If the incoming line pressure to the valve is
less
than the minimum stated, then the manifold
pressure will not be maintained
VERIFICATION OF SPARK AT
IGNITOR
Disconnect the
electrical power to the machine and
follow lockout / tagout procedures.
SG SERIES GAS CONVECTION OVENS - SERVICE PRODCEDURES AND ADJUSTMENTS
Page 19 of 31
F45525 (0814)
