Lincoln 1132-000-A out on the control. If the control reads “PROBE, Thermocouple, Oven control

		voltage output at the oven control, check the read-
		out 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. 11Ω. If these readings are not achieved,
		replace the thermocouple. If these readings are
		correct, proceed.
	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 will not 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	The main fan motor and burner blower motor are
	and burner blower motors	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	Check for 120 VAC supply to the primary of the
		control transformer. If no voltage is present, trace

10 Impinger II – Advantage Digital Service Manual - Domestic