Évaluations - 3, GPA: 4.7
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Facilité d'utilisation
GAS / 120 VAC / 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 120 VAC. The white conductor is neutral. The green conductor is ground. CONTROL BOX AUTO When the temperature in the control box reaches 120°F ± 3° (48.9°C ± 1.7°C), the COOL DOWN interrupt power to the fans when the control box temperature falls to 100°F ± 3° (37.8°C ± 1.7°C). MAIN FAN CIRCUIT Power is permanently supplied, through a 10A fuse, and through a normally closed control box hi-limit thermostat, to the normally open main fan switch. Power is also supplied to the normally open cooling fan thermostat. Closing the main fan switch supplies 120 VAC to the main fan motor, the cooling fan motor, the primary of the temperature display transformer, the heat and conveyor circuits. BURNER CIRCUIT Closing the main fan switch supplies 120 VAC to the burner blower motor. 120 VAC is also supplied, through the normally closed oven cavity hi-limit thermostat, the main fan centrifugal switch (this switch closes when main fan reaches approximately 1600 RPM) to the electronic temperature control and to the primary of the burner transformer. IGNITION CONTROL The ignition control operates on both 24 VAC and 120 VAC. When the control is energized by 24 VAC from the transformer, 120 VAC is switched by the ignition control to the hot surface ignitor for 45 seconds for the hot surface ignitor warm up. The ignitor glows red, 24 VAC is switched to the gas valve which opens and ignition should now occur. TEMPERATURE CONTROL When the centrifugal switch of the main fan motor closes, power is applied to the temperature control. The 1K ohm temperature pot is adjusted to desired temperature. The thermocouple will provide varying millivolts to the temperature controller. The temperature controller supplies 120 VAC to the solenoid valve at intermittent intervals to maintain desired temperature. The heat lamp is energized with the solenoid valve. CONVEYOR DRIVE Closing the on/off switch supplies 120 VAC to the motor control board. AC volts are converted to DC volts and are supplied to the conveyor motor at terminals A+ and A-. Adjustment 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 the 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 switch supplies 120 VAC to the primary of the temperature display transformer. The secondary of this transformer supplies 12 VAC to the temperature display. The thermocouple supplies D.C. millivolts to the temperature display. The display converts this millivolt reading to a temperature reading. Impinger II –Advantage Service Manual - Domestic POWER SUPPLY CONTROL BOX AUTO COOL DOWN MAIN FAN CIRCUIT HEATER CIRCUIT CONVEYOR DRIVE NOTE: Temperature Display SEQUENCE OF OPERATIONS 1130-000-A / 208V / SINGLE PHASE 1131-000-A / 240V / SINGLE PHASE 1132-000-A / 208V / THREE PHASE 1133-000-A / 240V / THREE PHASE Electrical power to be supplied to the oven by a three-conductor service on single phase and a four-conductor service on three phase. Black conductor is Hot Red conductor is Hot Orange conductor is Hot (Used on 3 phase only) Green conductor is ground. When the temperature in the control box reaches 120°F ± 3°F (48.9°F ± 1.7°C), the cooling fan thermostat will switch power to the cooling fans. The thermostat will interrupt power to the fans when the temperature falls to 100°F ± 3°F (37°C ± 1.7°C). Power is permanently supplied through the 10A fuses, through the normally closed control box high limit thermostat, to the normally open main fan switch. Power is also supplied to the normally open cooling fan thermostat. Closing the main fan switch supplies 208/240 VAC to the main fan motor, the cooling fan motor, to the primary of the temperature display transformer and to the heat and conveyor circuits. Closing the fan switch supplies 208/240 VAC, through the normally open air pressure switch (closed by air pressure from the main fan) through the normally closed oven cavity hi-limit thermostat, to the electronic temperature control. The 1K ohm temperature pot is adjusted to desired temperature. The thermocouple will provide varying millivolts to the temperature controller. The temperature control then supplies 208/240 VAC to the coil of the contactor at intermittent intervals to maintain the desired temperature. The heat lamp is energized with the contactor. Closing the on/off switch supplies 120 VAC to the motor control board. AC volts are converted to DC volts and are supplied to the conveyor motor at terminals A+ and A-. Adjustment of th...