Lincoln 1455, 1421-000-E, 1454 service manual Model 220/380VAC 50 HZ

SEQUENCE OF OPERATION

IMPINGER ADVANTAGE

SERIAL NUMBER N28654 AND ABOVE (OVENS WITH PUSH BUTTON CONTROLS)

MODEL 1454	220/380VAC	50 HZ.	3 PHASE
MODEL 1455	240/415VAC	50 HZ.	3 PHASE
POWER SUPPLY	Electrical power is to be supplied to the oven by a five conductor
	service.
	Brown conductor is hot.
	Black conductor is hot.
	Black conductor is hot.
	Blue conductor is neutral.
	Green conductor is ground.
CONTROL BOX AUTO	When the temperature in the control box reaches 120°F ± 3°F (48.9°C
COOL DOWN	± 1.7°C), the cooling fan thermostat will switch power to the control
	box cooling fan. The thermostat will interrupt power to the cooling fan
	when the control box temperature falls to 100°F ± 3°F (37°C ± 1.7°C).
MAIN FAN CIRCUIT	Electrical power is permanently supplied through three 50 A fuses to
	the normally open contacts of the heat relay. Power is also supplied,
	through the 10 Amp motor and control fuse, through the normally
	closed control box hi-limit thermostat, to the normally open oven power
	switch. Power is also supplied to the control box cooling fan
	thermostat. Closing the oven power switch supplies line voltage to the
	main fan motor. Closing the oven power switch also supplies line
	voltage to the heat circuit and to the primary of the oven control
	transformer.
HEAT CIRCUIT	Closing the oven power switch supplies line voltage through the main
	fan air pressure switch, through the normally closed oven cavity hi-limit
	thermostat, to the oven control
TEMPERATURE CONTROL	Closing the oven power switch supplies line voltage to the primary of
	the control transformer and through the air pressure switch and oven
	cavity hi-limit, to the oven control. Secondary voltage, 24VAC, is
	supplied to the oven control. The oven control is set to desired
	temperature. The thermocouple will provide varying millivolts to the
	oven control. The oven control supplies line voltage to the heat
	contactor at intermittent intervals to maintain desired temperature. The
	display on the oven control will indicate when the heat contactor is
	energized.
	NOTE: The display also indicates oven temperature.
CONVEYOR DRIVE	Closing the oven power switch supplies line voltage to the conveyor
	motor and to the primary of the control transformer. Secondary
	voltage, 24VAC, is supplied to the oven control. Setting the oven
	control to the desired time outputs voltage, through a reversing switch,
	to the conveyor motor.
	NOTE: The conveyor system uses a hall effect sensor and magnet to
	prove operation of the conveyor motor. If the motor is not running,
	“BELT JAM” is indicated on the display.

Impinger I -–Adv Digital – Electric Service Manual - International 3