Lincoln 1600-000-A Hi-limitthermostats, control box, Relay, oven power, as needed, Conveyor motor

	Hi-limit thermostat(s),	Check for voltage on both sides of the switch. Terminals are
	control box	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
	Relay, oven power	Check for 120 VAC to the relay coil. If voltage is not present,
		Trace wiring back to the hi-limit thermostat. If voltage is present,
		check to insure contacts are closing. Check for 120 VAC
		supplied to terminal #2 of the relay. If voltage is not present at
		terminal #2, trace wiring back to the 10 Amp fuse. Replace relay
		as needed.
	Control transformer	Check for 120 VAC supply to the primary of the control
		transformer. If no voltage is present, trace wiring back to the
		oven power relay. If voltage is present, check for 24 VAC at the
		transformer secondary. If there is primary voltage but no
		secondary voltage, replace control transformer.
	Conveyor motor	Check for 120 VAC supply to the conveyor motor at wire #14 to
		neutral. If no voltage is present, trace wiring back to the primary
		of the control transformer. If voltage is present and the motor will
		not run, check the motor windings for opens or shorts.
		WITH POWER OFF: Check the motor windings as follows:
		Grey to black - 38Ω approx.
		Grey to blue - 38Ω approx.
		Blue to black - 75Ω approx.
		If any of the above fails, replace conveyor motor.
	Capacitor, conveyor	Check for shorts or grounds. Replace capacitor as needed.
	motor	WARNING: Capacitor has a stored charge, discharge before
		testing.
	Switch, conveyor	Check continuity between switch terminals. Replace switch as
	reversing	needed.
	Oven control	If there is 120VAC supplied to the motor, and the motor,
		capacitor, and reversing switch check good, replace the oven
		control.
Conveyor motor runs,	NOTE: Display will
but there is no speed	indicate “Belt Jam”
display
	Oven control	Check for output voltage from oven control to hall effect sensor
		(sensor is located in conveyor motor). Measure voltage at the
		motor connector, red wire and yellow wire. Voltage should be
		approx. 10VDC. If no voltage is present, trace wiring back to
		oven control. If there is no voltage present at the oven control,
		replace the oven control.
	Conveyor motor	If there is voltage supplied to the hall effect sensor, check for a
		frequency output from the hall effect sensor. Measure frequency
		across the yellow and white wires at the motor connector.
		Frequency reading should be approx. 25 – 100 Hz. If these
		readings are not achieved, replace conveyor motor. If the
		readings are achieved, proceed.
	Oven control	If the hall effect sensor readings are correct, but there is no
		speed indicated on the display, replace the oven control.

8 Low Profile – 1600 Series Advantage Digital Service Manual – Domestic