SEQUENCE OF OPERATIONS / 1600-000-A, 1601-000-A
SERIAL NUMBERS L28563 and ABOVE
(with push button control)
MODEL
MODEL
POWER SUPPLY | Electrical power to be supplied to the oven by a three conductor cordset. Voltage from | ||||||
| the black conductor to the white conductor to be 120 VAC. |
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| White conductor is Neutral. |
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| Green conductor is Ground. |
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CONTROL BOX AUTO | ° | ± | 3 | ° | F (49 | ° | C |
COOL DOWN | When the temperature in either one of the Control Boxes reaches 120 F |
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± 1.7° C), the Cooling Fan Thermostats will switch power to the Cooling Fans. The |
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| thermostats will interrupt the power to the Cooling Fans when temperature falls to |
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| 100° F ± 3° F (37° C ± 1.7° C). |
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MAIN FAN CIRCUIT | 120 VAC is permanently supplied to the normally open Power Switch, both normally |
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| open Cooling Fan Thermostats, and one of the normally open contacts of the Power |
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| Relay. Closing the normally open Power Switch supplies 120 VAC through the Cooling | ||||||
| Fan Motor Fuse, and through both normally closed control box |
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| energizing the coil of the Oven Power Relay. These normally open contacts now close | ||||||
| supplying 120 VAC through the 10 Amp Main Fan Motor Fuse to the two Main Fan |
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| Motors and the two Burner Motors. Power is also supplied to the four cooling fan |
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| motors, the Control Transformer, heat, and conveyor control systems. |
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BURNER CIRCUIT | Closing the Oven Power Relay supplies 120 VAC to the two burner systems. |
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| NOTE: This oven utilizes two complete burner systems. The sequence of operations is | ||||||
| the same for each system. 120 VAC is supplied through the Centrifugal Switch of the |
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| Main Fan Motor (this switch closes when the Main Fan reaches approximately 1600 |
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| R.P.M.) through the 10 Amp Fuse, to the Ignition Control, the oven Temperature |
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| Control, and the Burner Transformer. As the Burner Blower reaches approximately |
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| 1600 R.P.M., its internal Centrifugal Switch will close, supplying 24 VAC to the Ignition | ||||||
| Control. The Ignition Control operates on both 24 VAC and 120 VAC. When the Ignition | ||||||
| Control is energized by 24 VAC, 120 VAC is switched to the Hot Surface Igniter for 45 | ||||||
| seconds for Hot Surface Igniter warm up. The igniter glows red, 24 VAC is switched to | ||||||
| the Gas Valve which opens, and ignition should occur. If ignition does not occur in 6 |
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| seconds, the control will lock out. To recycle after lockout, turn the Power Switch off for | ||||||
| 45 seconds and then turn back on. |
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TEMPERATURE | When the Centrifugal Switch of the Main Motor Fan closes, power is applied to the |
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CONTROL | oven Control. The Oven Control is set to the desired temperature. The thermocouple |
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| will provide varying millivolts to the Oven Control. The Oven Control supplies 120 VAC | ||||||
| to the Temperature Regulation Valve at intermittent intervals to maintain the desired |
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| temperature. The display on the Oven Control will indicate when the Temperature |
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| Control Valve is energized. |
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| NOTE: The display also indicates oven temperature. |
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CONVEYOR DRIVE | Closing the main Power Switch supplies 120 VAC through the Oven Power Relay to |
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| the Conveyor Motor and to the primary of the Control Transformer. Secondary voltage, | ||||||
| 24 VAC, is supplied to the Oven Control. Setting the Control to the desired time outputs | ||||||
| voltage through a Reversing Switch to the Conveyor Motor. |
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| NOTE: The conveyor system uses a Magnet and a Hall Effect Sensor to prove |
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| operation of the Conveyor Motor. If the Conveyor Motor is not running, “BELT JAM” is | ||||||
| indicated on the display. |
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2 | Low Profile – 1600 Series Advantage Digital Service Manual – Domestic |
