Lincoln 1628-000-A, 1621-000-EA Sequence Of Operations, Impinger Electric Low Profile Advantage

SEQUENCE OF OPERATIONS

IMPINGER ELECTRIC LOW PROFILE ADVANTAGE

(WITH PUSH BUTTON CONTROL)

	MODEL 1621-000-EA	230/400 VAC	50HZ
	MODEL 1628-000-A	220/380 VAC	50HZ
	MODEL 1629-000-A	224/415 VAC	50HZ
POWER SUPPLY	Electrical power 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	When the temperature in either one of the control boxes reaches 120°F ±3° (49°C ±
AUTO COOL DOWN	°
	1.7 ), the cooling fan thermostats will switch power to the cooling fans. The thermostats
	will interrupt power to the cooling fans when the temperature falls to 100°F ± 3° (37°C ±
	1.7°)
MAIN FAN CIRCUIT	Line voltage is permanently supplied (through a power filter) to a normally open contact of
	the oven power switch. Line voltage is permanently supplied to the two normally open
	cooling fan thermostats. Closing the oven power switch supplies line voltage, through both
	normally closed control box hi-limit thermostats, to the oven power relay. Its contacts now
	close supplying line voltage to the two main fan motors. Closing the oven power switch also
	supplies line voltage to the control box cooling fans, the oven control, the control
	transformer, and the conveyor motor.
TEMPERATURE	Closing the oven power switch supplies line voltage, through the 10 amp. fuse, through the
CONTROL	oven power relay, to the primary of the control transformer. 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 contactor
	at intermittent intervals to maintain desired temperature. The display on the oven control
	will indicate when the contactor is energized.
	NOTE: The display also indicates oven temperature.
CONVEYOR DRIVE	Closing the oven power switch supplies line voltage, through the 10 Amp fuse, through the
	oven power relay 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 magnet and hall effect sensor to prove operation of
	the conveyor motor. If the conveyor motor is not running, “BELT JAM” is indicated on the
	display.
AUTOMATIC COOL	When the oven is started, the time delay relay timing circuit is enabled, permitting the oven
DOWN	fans to operate for approximately 20 minutes after the oven is shut off, to cool the oven.
	The time delay relay will keep the coil of the motor relay closed, maintaining operation of
	main fan and cooling motors.

2 Low Profile – 1600 Series Adv Dig Electric S.M. – Int’l