SEQUENCE OF OPERATION

IMPINGER ADVANTAGE

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

MODEL 1450

120VAC

60 HZ.

NAT. GAS

MODEL 1451

120VAC

60 HZ.

LP GAS

 

 

POWER SUPPLY

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

 

from the black conductor to the white conductor is 120VAC. 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),

COOL DOWN

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° (37.0°C ± 1.7°C).

MAIN FAN CIRCUIT

Electrical power is permanently supplied, through a 10 Amp fuse, to the

 

normally open contacts of the oven power switch. Power is also supplied to the

 

normally open control box cooling fan thermostat. Closing the oven power

 

switch supplies 120VAC to the main fan motor and to the control box cooling

 

fan. Closing the oven power switch also supplies 120VAC to the burner blower

 

motor, the primary of the oven control transformer and to the centrifugal switch

 

of the main fan motor.

 

 

BURNER CIRCUIT

Closing the oven power switch supplies 120VAC to the burner blower motor and

 

to the normally open centrifugal switch of the main fan motor. As the main fan

 

motor reaches approx.900 RPM, the centrifugal switch closes supplying

 

120VAC to the oven control and to the primary of the burner transformer. The

 

transformer secondary supplies 24VAC, through the centrifugal switch of the

 

burner blower motor, to the ignition control.

 

IGNITION CONTROL

When the ignition control is supplied with 24VAC, the pilot valve and spark

 

igniter are energized. Ignition should now occur. After the pilot flame is proven,

 

the main valve is energized.

 

TEMPERATURE CONTROL

Closing the oven fan switch supplies 120VAC to the primary of the control

 

transformer and, through the centrifugal switch of the main fan motor, 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 120VAC 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.

CONVEYOR DRIVE

Closing the oven power switch supplies 120VAC 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 I – 1450 Series Service Manual - Domestic

Page 2
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Cub Cadet 1450, 1451 Nat. Gas, Lp Gas, Power Supply, Control BOX Auto, Cool Down, Main FAN Circuit, Burner Circuit

1451, 1450 specifications

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