SEQUENCE OF OPERATIONS

IMPINGER II ADVANTAGE

MODEL 1116-000-A / NATURAL GAS / 120 VAC / 60 HZ / 1 PHASE

MODEL 1117-000-A / L.P. GAS / 120 VAC / 60 HZ / 1 PHASE

POWER SUPPLY

Electrical power is supplied to the oven by a three conductor cordset. Voltage

 

from the black conductor to the white conductor is 120 VAC. The white

 

conductor is neutral. The green conductor is ground.

CONTROL BOX AUTO

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

 

the

COOL DOWN

interrupt power to the fans when the control box temperature falls to 100°F ± 3°

 

(37.8°C ± 1.7°C).

MAIN FAN CIRCUIT

Power is permanently supplied, through a 10A fuse, and through a normally

 

closed control box hi-limit thermostat, to the normally open main fan switch.

 

Power is also supplied to the normally open cooling fan thermostat. Closing the

 

main fan switch supplies 120 VAC to the main fan motor, the cooling fan motor,

 

the primary of the temperature display transformer, the heat and conveyor

 

circuits.

BURNER CIRCUIT

Closing the main fan switch supplies 120 VAC to the burner blower motor. 120

 

VAC is also supplied, through the normally closed oven cavity hi-limit thermostat,

 

the main fan centrifugal switch (this switch closes when main fan reaches

 

approximately 1600 RPM) to the electronic temperature control and to the

 

primary of the burner transformer.

IGNITION CONTROL

The ignition control operates on both 24 VAC and 120 VAC. When the control is

 

energized by 24 VAC from the transformer, 120 VAC is switched by the ignition

 

control to the hot surface ignitor for 45 seconds for the hot surface ignitor warm

 

up. The ignitor glows red, 24 VAC is switched to the gas valve which opens and

 

ignition should now occur.

TEMPERATURE CONTROL

When the centrifugal switch of the main fan motor closes, power is applied to the

 

temperature control. The 1K ohm temperature pot is adjusted to desired

 

temperature. The thermocouple will provide varying millivolts to the temperature

 

controller. The temperature controller supplies 120 VAC to the solenoid valve at

 

intermittent intervals to maintain desired temperature. The heat lamp is

 

energized with the solenoid valve.

CONVEYOR DRIVE

Closing the on/off switch supplies 120 VAC to the motor control board. AC volts

 

are converted to DC volts and are supplied to the conveyor motor at terminals A+

 

and A-.

 

Adjustment of the speed control potentiometer will change resistance at terminals

 

P1 and P2 varying the DC voltage to the motor. The speed of the conveyor

 

motor will increase or decrease as the DC voltage from the board increases or

 

decreases respectively.

NOTE:

The conveyor control uses a sensor and magnet, mounted on the conveyor

 

motor that senses the motor speed. Any change in motor load (±RPM) is

 

detected by the sensor and the voltage to the motor is adjusted accordingly.

Temperature Display

Closing the switch supplies 120 VAC to the primary of the temperature display

 

transformer. The secondary of this transformer supplies 12 VAC to the temperature

 

display. The thermocouple supplies D.C. millivolts to the temperature display. The

 

display converts this millivolt reading to a temperature reading.

Impinger II –Advantage Service Manual - Domestic

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Lincoln 1117-000-A, 1100ADVSVC service manual Sequence of Operations, Impinger II Advantage
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1117-000-A, 1100ADVSVC specifications

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