Log:
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GAS 120VAC 60 HZ. 1 PHASE MODEL 1116-080-A1 NAT. GAS 120VAC 60 HZ. 1 PHASE MODEL 1117-080-A LP GAS 120VAC 60 HZ. 1 PHASE MODEL 1117-080-A1 LP GAS 120VAC 60 HZ. 1 PHASE POWER SUPPLY Electrical power is supplied to the oven by a three-conductor cordset. Voltage from the black conductor to the white conductor is 120VAC. Black conductor is hot White conductor is neutral. Green conductor is ground. CONTROL BOX AUTO When the temperature in the control box reaches 120°F ± 3° (48.9°C ± 1.7°), theCOOL DO

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C. Unplug motor connector. D. Remove three mounting screws from blower tube at burner housing. E. Remove air shutter assembly from old motor for assembly on new motor. F. Reassemble in reverse order and check system operation. NOTE: Check air shutter at approximately . open and adjust to get a blue flame with an occasional tip of yellow under high flame. A view port in the burner assembly should be used to observe flame. HI-LIMIT THERMOSTAT, OVEN CAVITY – REPLACEMENT A. Shut off power at main br

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Setting the oven control to the desired time outputs voltage, through a reversing switch, to the conveyor motor. NOTE: The conveyor system uses a hall effect sensor and magnet to prove operation of the conveyor motor. If the conveyor motor is not running, “BELT JAM” is indicated on the display. AUTOMATIC COOL DOWN When the oven is started, the time delay relay timing circuit is enabled, permitting the oven fans to run approximately 20 minutes after the oven is shut off, to cool the oven. The tim

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WITH POWER OFF: Check for locked rotor. No automatic control box cooling Incoming power supply Check circuit breakers, reset if required. Check power plug to be sure it is firmly in receptacle. Measure incoming power, call power co. if needed. Cooling fan thermostat Check the cooling fan thermostat. (Thermostat closes at 120°F and opens at 100°F). With the cooling fan thermostat pre-heated, check for continuity. If switch is open, replace cooling fan thermostat. Cooling fan Check for 120VAC at c

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Hot surface igniter If 120VAC is present at hot surface igniter terminals, visually check to see that the igniter is heating (igniter may be viewed through the port in the end of burner tube). The igniter should glow bright red. If the igniter does not heat, replace the hot surface igniter. Ignition control After 45 seconds of hot surface igniter pre-heat, the ignition control will switch 24VAC to the gas control valves. Check for 24VAC output from ignition control across terminals marked “valve

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With the control set at maximum temperature, check for 120VAC at the temperature regulation valve. If there is voltage at the temperature regulation valve, proceed to “Temperature regulation valve” for next check. If there is no voltage at the temperature regulation valve, trace wiring back to the oven control. If there is no voltage output at the oven control, check the readout on the control. If the control reads “PROBE FAIL”, this indicates that the thermocouple has failed or become disconnec

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If thermostat will not hold, and control box temperature is not exceeding 140°F (60°C), replace thermostat. Power switch Check continuity between switch terminals. Replace switch as needed. Control transformer Check for 120 VAC supply to the primary of the control transformer. If no voltage is present, trace wiring back to the oven power relay. If voltage is present, check for 24 VAC at the transformer secondary. If there is primary voltage but no secondary voltage, replace control transformer.

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if needed. Fuses, 10 Amp, motor and controls Check, replace if necessary. Fuse holder Check, replace if necessary. Hi-limit thermostat, Oven cavity Terminals are normally closed. If open, reset thermostat and retest. If thermostat will not hold for maximum oven temperature, and oven is not exceeding temperature setting, check for proper location of capillary bulb in its spring holder. If the capillary checks okay, replace the hi-limit thermostat. Switch, main power Check continuity between switc

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C. Disconnect wiring and mark for reassembly. D. Remove bolts and slide back straight out of the oven. E. Loosen the bolt from fan hub and remove fan from motor shaft. NOTE: Measure distance from fan blade to rear wall assembly before removal to aid in reassembly. F. Reassemble in reverse order and check system operation. MOTOR, MAIN FAN – REPLACEMENT A. Shut off power at main breaker. B. Remove motor cover from back of oven. C. Disconnect wiring and mark for reassembly. D. Remove bolts and slid

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If the oven control indicates a temperature reading but the oven will not heat, proceed. Thermocouple WITH POWER ON AND THERMOCOUPLE ATTACHED TO THE OVEN CONTROL: Measure the DC millivolt output of the thermocouple. Refer to the thermocouple chart (located in the “Removal” section of the manual) for proper millivolt readings. If these readings are not achieved, replace thermocouple. Oven control If the thermocouple checks good, but there is no voltage output to the mercury contactor, replace the





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