Lincoln 1155-000-EA, 1154-000-EA, 1164-000-EA Sequence Of Operations Impinger Ii Advantage

SEQUENCE OF OPERATIONS

IMPINGER II ADVANTAGE

SERIAL NUMBER 2038616 AND ABOVE (OVENS WITH PUSH BUTTON CONTROLS)

MODEL 1154-000-EA	NAT. GAS	230VAC	50 HZ.	1 PHASE
MODEL 1155-000-EA	LP GAS	230VAC	50 HZ.	1 PHASE

POWER SUPPLY

CONTROL BOX AUTO COOL DOWN

MAIN FAN CIRCUIT

BURNER CIRCUIT

IGNITION CONTROL

TEMPERATURE CONTROL

CONVEYOR DRIVE

Electrical power to be supplied to the oven by a three conductor service.

When the temperature in the control box reaches 120°F ± 3°F (48.9°C ± 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 (37.8°C ± 1.7°C).

Power is permanently supplied, through a 10 amp oven fuse, through a normally closed control box hi-limit thermostat (opens at 140°F, 60°C), to the normally open double pole oven fan switch and to the cooling fan. Closing the oven fan switch supplies line voltage to the main fan motor. Closing the main fan switch also supplies voltage to the cooling fan, the primary of the control transformer, the conveyor motor, and the burner system.

Closing the oven fan switch supplies line voltage through the normally open gas pressure switch (located in the gas valve and closed when gas pressure is present), through the normally open air pressure switch (closed by the air pressure from the main fan), through the normally closed oven cavity hi-limit thermostat (opens at 662°F, 350°C), and to the ignition control.

The ignition control switches line voltage to the combustion blower motor. The combustion air pressure switch switches from normally closed to normally open upon sensing air pressure in the burner housing. After a pre-purge period of between 30 and 60 seconds, the spark generator is energized, the main gas valve and the burner pilot light are energized, and ignition should now occur.

Closing the oven fan switch supplies line voltage to the primary of the control transformer. 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 temperature regulation valve at intermittent intervals to maintain the desired temperature. The display on the oven control will indicate when the temperature regulation valve is energized.

NOTE: The display also indicates oven temperature.

Closing the oven fan 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 conveyor motor is not running, “BELT JAM” is indicated on the display.

2 Impinger II – Advantage Digital Service Manual - International