Lincoln 1100 Series Manuel D’Utilisation

MODEL 1134

ELECTRIC

220/380 VAC

50 HZ

3 PHASE

MODEL 1135

ELECTRIC

240/415 VAC

50 HZ

3 PHASE

MODEL 1136

ELECTRIC

240 VAC

50 HZ

1 PHASE

MODEL 1150

ELECTRIC

220/380 VAC

50 HZ

3 PHASE

POWER SUPPLY

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

single phase and a five conductor service on three phase.

CONTROL BOX AUTO

When the temperature in the control box reaches

COOL DOWN

120°F ± 3°F (48.9°C ± 1.7°C), the Cooling Fan Thermostat closes,

switching power to the Cooling Fans. The thermostat will open at 100°F ±

3°F (37.8°C ± 1.7°C) interrupting power to the Cooling Fans.

MAIN FAN CIRCUIT

Power is supplied by Line 1 on Model 1136 and L2 on 1134, 1135, and

1150 to the normally open main fan relay. Power is also supplied from Line

1, through the 1 Amp Fuse to the primary of the Step Down Transformer.

120 V AC is continuously supplied from Transformer secondary to terminal

number 1 of the 20 Minute Timer and through the High Limit Thermostat

(normally closed) to the Main Fan Switch.  Closing the Fan Switch ener-

gizes the coil of the oven start relay, its contacts close enabling the 20

minute time delay module. The 20 minute time delay module supplies 120

VAC to the oven fan relay, this normally open contact now closes supply-

ing line voltage to the main fan motor.  The cooling fans and the time/temp

display transformer are also energized.

HEATING CIRCUIT

Closing the Heat Switch supplies 120 volts AC through the normally open

Air Pressure Switch (closed by air pressure from the Main Fan), the 3

Amp Fuse, to terminal L1 of the Temperature Control Board, and the Heat

Indicator Light.

TEMPERATURE CONTROL

Closing the Heat Switch supplies 120 VAC to the Electronic Temperature

Control. The 2.5K ohm Potentiometer is adjusted to achieve the desired

temperature. The Thermocouple will provide varying

millivolts to the

Temperature Control. The temperature control board then supplies 120

VAC to the coil of the Contactor at intermittent intervals to maintain the

desired temperature.

CONVEYOR DRIVE

Closing the Conveyor Switch supplies 120 VAC to the DC Motor Control

Board at terminals L1 and L2. AC volts are converted to DC volts and are

supplied to the Conveyor Motor at terminals A+ and A-. Adjustment

S/N 2011383 and above

of the Speed Control Potentiometer (5,000 ohm, 10 turn)

REFER TO PAGE B15

will change resistance at terminals P1, P2, and P3varying the DC voltage

to the Conveyor Motor. The speed of the conveyor motor will increase or

decrease as the DC voltage from the board increases or decreases

respectively. As the motor turns, it drives both the reducergear box and

the Tach. Generator. The tach. generatoris a DC voltage generator which

supplies a voltage to the DC Motor Control Board and is used as a

reference for maintaining a constant conveyor speed.

TIME/TEMP DISPLAY

The secondary output of the Display Transformer, is supplied to terminals

1, 2, and 3 of the Time/Temp. Display.The secondary output of the Trans-

former is nominally 12.5 to 15 VAC with a center tap.  The voltage from

center tap to each leg is 1/2 the secondary voltage.

The speed side of the Time/Temp. Display uses a slotted disc

Impinger II - 1100 Series Service Manual - International

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