Sigma 1456, 1457 Pilot Orifice Replacement, ON-OFF Switch Replacement, Oven Control Replacement

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6.Remove assembly and replace main orifice.

7.Reassemble in reverse order and check system operation. NOTE: Check all gas line fittings for leaks.

PILOT ORIFICE - REPLACEMENT

1.Shut off power at main breaker.

2.Shut off gas supply.

3.Remove burner assembly (See "Burner Assembly").

4.Remove pilot line from pilot orifice.

5.Remove pilot orifice from burner ignitor.

6.Reassemble in reverse order.

NOTE: Check all gas line fittings for leaks.

ON-OFF SWITCH - REPLACEMENT

1.Shut off power at main breaker.

2.Remove control box cover.

3.Remove access cover.

4.Depress spring clips on side of switch and push out.

5.Remove wires from back of switch, note wire number and location.

6.Reassemble in reverse order and check system operation.

NOTE: Make sure switch housing is fully seated in control box housing.

OVEN CONTROL – REPLACEMENT

A.Shut off power at main breaker.

B.Remove control box cover and front panel.

C.Remove all wiring connections and mark for reassembly.

D.Remove oven control by pulling control from the mounting pins. Remove control from oven.

E.Before installing new oven control, set voltage jumper (located at the bottom center of the oven control) to the proper voltage (120V/240V) position. Install the four pushbutton extensions (included with the oven control) by pushing the extensions onto the four set buttons on control.

F.Reassemble in reverse order and check system operation.

G.Set the oven control for the proper operating mode. The 1400 series ovens use a single temperature control system. The oven control must be set to the proper operating mode. Set the control as follows: With the oven power switch “off”, depress the “time” and “up” buttons and turn the oven “on”. Control will indicate

“Imp I or Imp II” Release the buttons. Press the “up” or “down” button until “Imp I” and “temp to store” appears on the display. Press the “temp” button. The control is now set for Impinger I conveyor and single burner operation.

FUSE HOLDER – REPLACEMENT

1.Shut off power at main breaker.

2.Remove control box cover.

3.Remove all wiring from fuse holder and mark for reassembly.

4.Remove mounting nut for fuse holder and remove fuse holder.

5.Reassemble in reverse order and check system operation.

BEARING, CONVEYOR – REPLACEMENT

1.Remove conveyor from oven and place on flat work surface.

2.Remove connecting links from conveyor belt. See Installation and operations manual.

3.Remove conveyor belt from conveyor. Remove drive sprocket from drive shaft if required.

4.Move shaft toward end of conveyor, and shaft with bearings will now slip out of holding bracket.

5.Replace bearing and reassemble in reverse order.

Impinger I – Adv Digital – Gas Service Manual – International

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Contents Impinger Conveyor Ovens Temperature Control Power SupplyNAT. GAS LP GASSchematic Diagram Serial Number N28654 to N31348 Serial Number N31349 and Above Symptom Possible Cause Evaluation With Power OFF Remove 3 prong plug on gas Not stay on, check the reset button for the ignition Page Belt JAM With Power on and ThermocoupleSensor sensor is located in the conveyor motor CAPACITOR, Motor Replacement FAN, Main ReplacementCooling FAN, Control BOX Replacement Impinger Advantage SeriesBurner Blower Motor Replacement THERMOSTAT, Cooling FAN ReplacementTo Remove the Blower Wheel for Periodic Cleaning Burner AssemblySWITCH, Burner Reset Replacement Temperature Regulation Valve ReplacementBurner Ignitor Replacement THERMOSTAT, Oven Cavity HI-LIMIT ReplacementBurner Alarm Replacement Spark Generator ReplacementControl Transformer Replacement Thermocouple Measurment Temperature Millvolts ApproxConveyor Drive Motor Replacement CAPACITOR, Conveyor Motor ReplacementON-OFF Switch Replacement Pilot Orifice ReplacementOven Control Replacement Fuse Holder ReplacementLetter Part Number Description General View Advantage SeriesPage 1456,1457,1433-000-E, 1434-000-E Control BOXPage GAS and Electric Oven BackPage Conveyor 1450 Series Page This page intentionally left blank This page intentionally left blank

1434-000-E, 1457, 1456, 1433-000-E specifications

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