SEQUENCE OF OPERATION

IMPINGER II ADVANTAGE, GAS

(OVENS WITH PUSH BUTTON CONTROLS)

MODEL 1116-080-A

NAT. GAS

120VAC

60 HZ. 1 PHASE

MODEL 1116-080-A1

NAT. GAS

120VAC

60 HZ. 1 PHASE

MODEL 1117-080-A

LP GAS

120VAC

60 HZ. 1 PHASE

MODEL 1117-080-A1

LP GAS

120VAC

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 120VAC.

 

Black conductor is hot

 

 

 

White conductor is neutral.

 

 

Green conductor is ground.

 

CONTROL BOX AUTO

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

COOL DOWN

cooling fan thermostat will switch power to the control box cooling fans. The

 

thermostat will interrupt power to the cooling fans when the control box

 

temperature falls to 100°F ± 3° (37.8°C ± 1.7°).

MAIN FAN CIRCUIT

Power is permanently supplied, through a 10 amp fuse, to the normally open

 

main power switch. Power is also supplied to the normally open cooling fan

 

thermostat. Closing the main power switch supplies 120VAC to the main fan

 

motor, the cooling fan motors, the primary of the control transformer, the

 

conveyor motor and to the ignition control.

BURNER CIRCUIT

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

 

120VAC is also supplied, through the main fan centrifugal switch (this switch

 

closes when the main fan reaches approx. 1600 RPM) and the normally closed

 

oven cavity hi-limit thermostat, to the primary of the burner transformer. 120VAC

 

is also supplied to the oven control.

 

IGNITION CONTROL

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

 

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

 

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

 

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

 

ignition should now occur.

 

TEMPERATURE CONTROL

Closing the main power switch supplies 120VAC to the primary of the oven

 

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 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 main 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 II – Advantage Digital Express Service Manual - Domestic

Page 2
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Toro TRUE Nat. Gas, Lp Gas, Power Supply, Control BOX Auto, Cool Down, Main FAN Circuit, Burner Circuit, Ignition Control

1117-080-A1, 1117-080-A, 1130-080-A, 1131-080-A, 1132-08H-A specifications

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