Southbend Gas Convection Oven GB/25

Disconnect the power supply to the appliance before cleaning.

Is the power switch in the 'OFF' position before cleaning the blower wheel?

Turn the power switch to OFF and allow the oven to cool.

Remove the oven-interior racks and rack slide frames.

Wash the racks and rack slides with mild detergent and warm water.

Dry the racks and rack slides thoroughly with a clean cloth.

Is there any foreign matter on the blades of the blower wheel?

Loosen the two set screws that secure the temperature-control knob to the temperature-control shaft.

Remove the knob from the shaft, being careful not to rotate the knob or shaft.

Replace the knob on the shaft so that the indicator mark on the knob points directly at the temperature that was measured at the center of the oven.

Is the oven calibration correct after adjustment?

Record the temperature measured at the center of the oven.

Describe any issues encountered during the calibration process.

WARNING! Adjustments and service work may be performed only by a qualified technician.

NOTICE: Warranty will be void if service work is performed by other than a qualified technician.

Remove lower front panel that covers the door chain mechanism.

Check the positioning of the chain on the sprockets.

Reposition the chain over the sprockets if necessary.

Adjust the turnbuckles so that the right door closes about 1/4” to 1/2” inch ahead of the left door.

Ensure the left door is pushed tight over the friction catch.

Secure the turnbuckles by tightening their locknuts.

Temperature Controller Check Procedure

Remove all trays and pans from the oven.

Place a thermocouple or a reliable mercury oven-type thermometer at the center of the middle rack.

Turn the oven ON and set the temperature control knob to 400 °F.

Did the amber 'heat on' light go out when the oven temperature was reached?

Allow three cycles for the temperature to stabilize. Enter the number of cycles completed.

Read the thermocouple or thermometer immediately after the light goes out for the third time.

Read the thermocouple or thermometer immediately after the light comes on the next time.

Turn all thermostats and burner valves to 'OFF' position.

Turn main gas valve to entire unit off.

Remove valve panels and locate 1/8” plug in manifold.

Remove plug and install a fitting appropriate to connect a manometer.

Pressure Reading and Adjustment

Turn on main gas to unit and light pilots.