Assessments - 3, GPA: 4
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3 SCHEMATIC............................................................................................................................ 5 TROUBLESHOOTING GUIDE ................................................................................................ 6 REMOVAL, INSTALLATION & ADJUSTMENTS................................................................. 12 GENERAL PARTS.................................................................................................................20 ADVANTAGE SERIES.......................................................................................................... 20 CONTROL BOX, RIGHT PARTS........................................................................................... 22 CONTROL BOX, LEFT PARTS.............................................................................................24 OVEN BACK PARTS ............................................................................................................. 26 CONVEYOR PARTS ............................................................................................................. 28 Low Profile – 1600 Advantage Series Service Manual – International SEQUENCE OF OPERATIONS MODEL 1633-000-EA 230 VAC 50HZ NATURAL GAS MODEL 1634-000-EA 230 VAC 50HZ L.P. GAS POWER SUPPLY Electrical power to be supplied to the oven by a three conductor service. Brown conductor is hot Blue conductor is neutral. Green conductor is ground. CONTROL BOX AUTO COOL DOWN When the temperature in either one of the control boxes reaches 120°F ±3° (49°C ± 1.7° ) , the cooling fan thermostats will switch power to the cooling fans . The thermostats will interrupt power to the cooling fans when the temperature falls to 100°F ± 3° (37°C ± 1.7° ) MAIN FAN CIRCUIT Line voltage is permanently supplied to a normally open contact of the oven power switch. Line voltage is permanently supplied to the two normally open cooling fan thermostats, a normally open contact of the oven power relay. Closing the oven power switch supplies line voltage to oven power relay, its contacts now close, supplying line voltage to the two main fan motors and the two burner circuits. Closing the oven power switch also supplies line voltage to the control box cooling fans, the temp. display, and the conveyor circuit. BURNER CIRCUIT NOTE: This oven utilizes two complete burner/ temperature control systems. The sequence of operations is the same for each system. Closing the main fan switch supplies line voltage, through the oven power relay, through a three amp. fuse, through the gas pressure switch, through the main fan air pressure switch through the oven cavity hi-limit thermostat, to the ignition control. The combustion motor is energized. The normally open combustion air switch closes upon sensing air pressure. After a pre-purge period of between 30 and 60 seconds, the ignition transformer and the main gas valve are energized. Ignition should now occur. TEMPERATURE CONTROL Closing the oven power switch supplies line voltage, through the oven power relay, through a three amp. fuse, through the gas pressure switch, through the main fan air pressure switch through the oven cavity hi-limit thermostat, to the temperature control board. The 1.0K temperature pot. is adjusted to desired temperature. The thermocouple will provide varying millivolts to the temperature control. The temperature control supplies line voltage to the solenoid valve at intermittent intervals to maintain desired temperature. CONVEYOR DRIVE Closing the oven power switch supplies line voltage, through the oven power relay, through the electromagnetic filter to the conveyor control. AC volts are converted to DC volts and are supplied to the conveyor motor at terminals A+ and A-. Low Profile – 1600 Advantage Series Service Manual – International Adjustments of the speed control potentiometer will change resistance at terminals P1 and P2 varying the DC voltage to the motor. The speed of the conveyor motor will increase or decrease as the DC voltage from the board increases or decreases respectively. NOTE: The conveyor control uses a sensor and magnet, mounted on the conveyor motor that senses motor speed. Any change in motor load ( ± RPM ) is detected by the sensor and the voltage to the motor is adjusted accordingly. TEMPERATURE DISPLAY Closing the power switch supplies line voltage to the primary of the temperature display transformer. The secondary of this transformer supplies 12 VAC to the temperature display. The thermocouple supplies DC millivolts to the temperature display. The display converts this millivolt reading to a temperature reading. Low Profile – 1600 Advantage Series Service Manual – International SCHEMATIC MODELS 1633-000-EA AND 1634-000-EA Low Profile – 1600 Advantage Series Service Manual – International TROUBLESHOOTING GUIDE MODEL 1633-000 EA NATURAL GAS 230 VAC 50 HZ 1 PHASE MODEL 1634-000-EA L.P. GAS 230 VAC 50 HZ 1 PHASE NOTE: When checking components on left side of unit,...
Este manual também é adequado para os modelos :Fornos Elétricos - Impinger Conveyor Ovens 1634-000-EA (1.64 mb)