Assessments - 2, GPA: 4.5
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2.Remove louvered motor cover from back of oven. 3.Remove wireway by taking out the (5) five hex screws. 4.Disconnect wiring from motor. 5.Remove the twelve (12) hex head bolts from the oven back and slide back straight out of the oven. 6.Remove two (2) bolts 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. 7.Remove the eight (8) hex head bolts from the motor mount and slide the motor assembly out of the oven back. 8.Remove motor by taking off motor clamp and removing the four (4) mounting nuts and washers. 9.Reassemble in reverse order. When motor mount assembly is set on the oven back, align motor shaft in the center of the hole. Set fan assembly on the motor shaft. NOTE: A. Torque specs on bolts (150 in/lb. torque) B. It is recommended that an anti-seize compound be brushed on to the bolts around the back and motor mount bracket before assembly. FAN, MAIN - REPLACEMENT Shut off power at main breaker. Remove back assembly. (See MOTOR, MAIN FAN)) Reinstall and locate fan so that the bottom of the fan spider is 1 1/2" from the top of the oven back cone. (See Drawing) FAN SPIDER NOTE: MEASUREMENT MUST BE MADE FROM CONE TO FAN SPIDER FAN HUB 1 1/2 INCH CONE CAPACITOR, MOTOR - REPLACEMENT 1.Shut off power at main breaker. 2.Remove motor cover from back of oven. 3. Discharge capacitor. 4. Remove and replace. COOLING FAN, CONTROL BOX - REPLACEMENT 1.Shut off power at main breaker. 2.Remove control panel top and front cover. 3.Remove four (4) screws from the fan frame. 4.Disconnect cord and plug and remove fan. 5.Reassemble in reverse order. THERMOSTAT, COOLING FAN - REPLACEMENT 1.Shut off power at main breaker. 2.Remove control panel top and front cover. 3.Remove lead wires and mark for reassembly. 4.Remove two (2) screws and remove thermostat. 5.Reassemble in reverse order. Impinger I -–Adv Digital – Electric Service Manual - International THERMOSTAT, OVEN CAVITY HI-LIMIT – REPLACEMENT 1. Shut off power at main breaker. 2. Remove control box cover and front panel. Remove conveyor assembly and fingers from oven to aid in removal of thermostat from oven. 3. Disconnect wires from thermostat and mark for reassembly. 4. Remove thermostat from oven. 5. Reassemble in reverse order and check system operation. AIR PRESSURE SWITCH – REPLACEMENT 1. Shut off power at main breaker. 2. Remove control panel top and front cover. 3. Disconnect wires from air pressure switch and mark for reassembly. 4. Remove air switch tube from air pressure switch. 5. NOTE: There are two types of air pressure switches used. Remove air pressure switch from its mount. 6. Reassemble in reverse order and check system operation. 7. To adjust air pressure switch, remove cover from switch to expose adjusting screw. To increase sensitivity, turn screw counter-clockwise. To decrease sensitivity, turn screw clockwise. THERMOCOUPLE (TYPE K) - REPLACEMENT 1.Shut off power at main breaker. 2.Remove control panel top and front cover. 3.Slide thermocouple out of oven chamber. NOTE: Remove conveyor and bottom fingers to aid in removal and installation of thermocouple. 4.Remove two (2) wires from temperature control. Make note of wire numbers or color and location for reinstallation. 5.Reassemble in reverse order making sure the metal end on the thermocouple is in the wire form in the oven chamber. THERMOCOUPLE MEASURMENT TEMPERATURE D.C. MILLVOLTS (APPROX.) 200° 2.8 250° 4.0 300° 5.1 350° 6.0 400° 7.1 450° 8.2 500° 9.3 550° 10.4 600° 11.5 Impinger I -–Adv Digital – Electric Service Manual - International CONTROL TRANSFORMER - REPLACEMENT 1.Shut power off at main breaker. 2.Remove control panel top and front cover. 3.Remove two (2) wires on primary side, note color and location. 4.Remove two (2) wires on secondary side, note color and location. 5.Remove two (2) screws from transformer base and replace assembly. 6.Reinstall in reverse order and check system operation. CONVEYOR DRIVE MOTOR - REPLACEMENT 1.Shut power off at main breaker. 2.Remove control panel top and front cover. 3.Loosen set screw on conveyor drive sprocket and slide sprocket off shaft. 4.Disconnect motor plug. 5.Remove four (4) screws from motor frame, on control box side, and remove motor assembly. 6.Reassemble in reverse order making sure to align chain sprockets and adjust motor for proper chain tension (1/2" SAG). CAPACITOR, CONVEYOR MOTOR – REPLACEMENT 1.Shut off power at main breaker. 2.Remove control box cover and front panel. 3.Discharge capacitor before removing wires. Mark wires for reassembly. 4.Remove mounting screw and remove capacitor. 5.eassemble in reverse order and check system operation. REVERSING SWITCH – REPLACEMENT 1. Shut off power at main breaker. 2. Remove control box cover and front panel. 3. Disconnect wires from reversing switch and mark for reassembly. 4. Remove mounting nut and remove reversing switch. 5. Reassemble in reverse order and check system operation. REVERSING CO...
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