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5
COMBINATION VALVE GAS PRESSURE CHECK
1. Check pressure rating of appliance as stated on the cooker door.
2. Turn on all appliance burners.
3. Connect a manometer to the pressure tap of the gas combination valve (gas tap is marked on valve).
4. Open the pressure tap of the manometer.
5. The manometer reading should match the pressure rate inches water column as stated on the appliance
rating plate.
6. If pressure rating is off check the incoming store gas pressure line. If store line pressure is good, continue
with the following steps.
ON-OFF ROCKER SWITCH (D.P.S.T.)
1. Disconnect power.
2. Follow steps under Removal of Cooker Control Panel.
3. Note and disconnect wiring from switch.
4. With an ohm meter and switch in the "off" position measure for continuity across the (2) switch pins that were
connected to power. An ohm reading of infinity should be found.
5. With an ohm meter and switch in the "on" position, measure for continuity across the (2) switch pins that were
connected to power. An ohm reading of 0 should be found.
6. If readings measured in either steps 4 or 5 do not agree with what is stated in these steps replace the switch.
SIGNAL LIGHT
1. With power connected follow steps for Removal of Cooker Control Panel except do not
disconnect the control panel electric supply wire harness.
2. Turn power switch "on".
3. If light fails to illuminate, with a voltage meter measure for voltage of between 110 and 120 volts
across the light connections. If voltage is not found, replace light.
COOKER THERMOSTAT CALIBRATION CHECK
1. Turn cooker on and allow temperature to stabilize by letting the cooker cycle on and off, after reaching the
boil temperature, at least three times.
2. Place a pyrometer sensor in the area of the tank probe tubes.
3. After the stabilizing period the water temperature reading of the pyrometer should be
225 degrees F. plus or minus 10 degrees.
4. If readings are not in tolerance see Section II Services Adjustments in this manual.
HI LIMIT CHECK
1. Turn cooker on.
2. Set temperature at boil setting.
3. Place pyrometer in tank near the probe tubes.
4. Observe reading, the hi limit should trip at temperatures of between 235-265 degrees F.
If tripping does not occur replace limit.
BURNER PILOT CHECK
1. Follow steps 1-4 under Removal of Burner.
2. Follow steps 1-3 under Removal of Burner Pilot and Orifice.
3. Examine the pilot body and orifice for clogging.
4. If clogged blow through one end of device. If clogging is still evident soak in warm water or use small probe
device to clear the obstruction. If clogging still persists install new body or orifice as required.
5. Follow steps 1-2 above to install new parts or reinstall repaired parts.