Your new Impinger is equipped with three diagnostic messages to help you troubleshoot a specific problem yourself or at least help you narrow it down. The messages you might encounter on the digital display are one, probe fail. This occurs when there's no temperature being sent to the controller from the baking chamber. This generally means a malfunctioning or failed thermoprobe. Two, shorted probe, this occurs when a constant temperature signal is being sent to the controller from the baking chamber. This will happen if there is no heat being supplied to the oven for some reason. This can occur if the gas valve is shut off or disconnected. Three, belt jam, this will occur when there's a conveyor motor failure. These messages should be noted and communicated when calling your Lincoln authorized service agent.
Now let's talk about what to do if your Impinger oven seems to be malfunctioning, but there are no diagnostic messages displayed. Before you make a service call, there are a few things you should check out.
We'll look at troubleshooting in terms of the symptom you've observed and what might be causing it.
You turn on the oven at the beginning of the work day and it did not respond by heating up. Always suspect the easy stuff first. Is the oven plugged in tightly? Check the temperature display, does it show that the oven is heating? If not, see that the temperature is set to the right temperature. You may then need to hit the red thermostat reset button. If the thermostat is set right, see if the main fan is working by checking for air movement. If there's no air movement, the fan is not working, so check the main circuit breaker and the main fan fuses on the oven. If you find a bad fuse, replace it. If the fuses are okay and you have an electric oven, there's nothing more that you can do, your authorized Lincoln service agent must be contacted. If the fuses are okay and your oven is gas fired, be sure the main shut-off valve is open. Check for kinks in the gas hose and make sure the gas connector is firmly looked into its receptacle. Beyond this, there's nothing more you can do, your authorized Lincoln service agent must be contacted.
Burnt products result from too high of a temperature, too long of cooking time, or improperly installed columnating panels. First see if all the fingers are installed properly. Then check the temperature set point. If the temperature is set properly, but the products are overcooked the oven could be out of calibration. If the timer shows it's set properly, time it against a stop watch. Start the stop watch when the leading edge of the pan enters the oven. Stop the watch when the leading edge exits the oven. If the time/temperature mechanism needs recalibration your authorized Lincoln service agency must be contacted. In the meantime, you can try to compensate by adjusting the times up or down until help arrives.
Undercooked products can result from several things. First be sure you're not placing the food product too far into the oven cavity. The leading edge should be just at the conveyor opening and don't pull the product out of the oven too soon. Next if the display shows the temperature is set properly, but the products are undercooked, the oven could be out of calibration. If the timer shows it's set properly, time it against the stop watch, using the leading edge in to leading edge out method we used earlier. Again if the time/temperature mechanism needs calibration, your authorized Lincoln service representative should be contacted. And of course you can compensate by decreasing the belt speed up or down until help arrives. If time and temperature are not your problem, it could be the columnating panels were not installed properly. If you're still having a problem, see if the main fan is working by checking for air movement. If the fan isn't running, check the main circuit breaker and the main fuses. If you have a gas fired oven, check to make sure the main shut-off valve is open. Check for kinks in the gas hose and be sure the gas connector is firmly locked to its receptacle. If you do all this and the oven is still not performing properly, it's time to call your authorized service agency.
Another situation you might run into is a conveyor belt that won't move. If this happens, your display might show the diagnostic message: belt jam. This occurs when the conveyor motor fails, so you'll need to call your Lincoln authorized service agency. If this does not happen, check to see that the belt speed control was not accidentally turned all the way down. Check the drive coupling to ensure they are connected properly. Take corrected action as needed. Next check your main circuit breakers and fuses. If the conveyor stopped when the oven was hot, it could be overheating. Check and clean the ventilation louvers and cooling fan covers if needed. It could also be a mechanical malfunction. With the circuit breaker off, so the conveyor can't start accidentally, disconnect the coupling. Then gently push and pull the conveyor to see that it moves freely. If it doesn't, look for some obstruction or binding. If the conveyor moves freely, then turn the circuit breaker back on, turn the oven on, and check to see if the motor shaft is rotating. If the motor drive shaft won't turn, you will have to call your authorized Lincoln service agency.
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Troubleshooting with the 1100 series Impinger ovens from Lincoln. This video offers an overview of diagnostic messages as well as what you can do to ascertain exactly what your oven needs done!
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