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Фрагмент инструкции
With the control set at maximum temperature, check for 120VAC at the temperature regulation valve. If there is voltage at the temperature regulation valve, proceed to “Temperature regulation valve” for next check. If there is no voltage at the temperature regulation valve, trace wiring back to the oven control. If there is no voltage output at the oven control, check the readout on the control. If the control reads “PROBE FAIL”, this indicates that the thermocouple has failed or become disconnected from the oven control. Thermocouple Check to be sure that the thermocouple is securely connected to the oven control. If the thermocouple is connected to the oven control, and the control indicates “PROBE FAIL”, disconnect the thermocouple from the oven control and measure the resistance of the thermocouple. The thermocouple should read approx. 11.. If these readings are not achieved, replace the thermocouple. If these readings are correct, proceed. Impinger II – Advantage Digital Express Service Manual - Domestic Oven control If the thermocouple checks good, but the oven control display indicates that there is a thermocouple failure, replace the oven control. If the oven control indicates a temperature reading but the oven won’t heat, proceed. Thermocouple WITH POWER ON AND THERMOCOUPLE ATTACHED TO THE OVEN CONTROL: Measure the DC millivolt output of the thermocouple. Refer to the thermocouple chart (located in the “Removal” section of the manual) for proper millivolt readings. If these readings are not achieved, replace thermocouple. Oven control If the thermocouple checks good, but there is no 120VAC output to the temperature regulation valve, replace the oven control. If there is 120VAC output to the temperature regulation valve, proceed. Temperature regulation valve Check for 120VAC supplied to temperature regulation valve. If voltage is present, listen for valve to open and close. Also check for opens or shorts in the operating coil. Replace temperature regulation valve as needed. Intermittent heating Thermal/overload of main fan and burner blower motors The main fan motor and burner blower motor are equipped with internal thermal protection and will cease to operate if overheating occurs. As the motors overheat and then cool, this will cause the heating system to cycle on and off intermittently. Improper ventilation or lack of preventive maintenance may cause this problem. Also, most of the problems listed under “Oven will not heat” can cause intermittent failure. Conveyor will not run Power supply Check for incoming voltage at line 1 to neutral. There should be a reading of 120VAC. If not present, check circuit breakers. Fuse, 10 Amp Check, replace if necessary. Fuse holder Check, replace if necessary. Hi-limit thermostat, control box Check for voltage on both sides of switch. Terminals are normally closed. If open, reset and test oven for proper operation. If thermostat will not hold, and control box temperature is not exceeding 140°F (60°C), replace thermostat. Power switch Check continuity between switch terminals. Replace switch as needed. Control transformer C...
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