Lincoln 1100 Series service manual Sequence Of Operations

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SEQUENCE OF OPERATIONS - 1151

MODEL 1151

ELECTRIC 200 VAC

60 HZ

3 PHASE

POWER SUPPLY

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

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 Cooling

 

Fans.

 

 

MAIN FAN CIRCUIT

Power is permanently supplied through a 1A fuse to the primary of the

 

step-down transformer. The transformer steps the voltage down to 120

 

VAC for the control circuit. 120 VAC is supplied to terminal #1 of the 20

 

minute time delay relay, through the normally closed hi-limit thermostat, to

 

a normally open contact of the oven start relay, the cooling fan thermostat

 

and to the normally open main fan switch.

 

Closing the fan switch energizes the oven start relay. These normally open

 

contacts now close enabling the 20 minute timer delay. The 20 minute

 

time delay relay supplies 120 VAC to the coil of the oven fan relay, these

 

normally open contacts now close supplying 200 VAC to the main fan

 

motor. The cooling fans, time/temp display, conveyor switch and heat

 

switch are also energized.

 

 

HEATER CIRCUIT

Closing the Heater Switch supplies 120 VAC through the normally open

 

Air Pressure Switch (which was closed by Main Fan Air Pressure), through

 

the 3 Amp Fuse, to the Temperature Control Board and to the Heater

 

Lamp.

 

 

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 P3

 

varying the DC voltage to the Conveyor Motor. Thespeed of the conveyor

 

motor will increase or decrease as the DC voltage from the board in-

 

creases 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 formaintaining 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 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.

Impinger II - 1100 Series Service Manual - International

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Contents INTERNATIONAL SERVICE MANUALIMPINGER CONVEYOR OVENS MODEL 1100 SERIESTABLE OF CONTENTS SEQUENCE OF OPERATIONS 1104 thru the display into a temperature reading SEQUENCE OF OPERATION 1134 - 1135 - 1136 - S/N 2011383 and above SEQUENCE OF OPERATIONS 2011383 and above SEQUENCE OF OPERATIONS 1152 thru intervals to maintain desired temperature by the display into a temperature reading temperature readingSCHEMATIC SCHEMATIC SCHEMATIC 1134, 1135, 1150, S/N 2011383 AND BELOW SCHEMATIC 1134, 1135 S/N 2011383 AND ABOVE SCHEMATIC 1150 S/N 2011383 AND ABOVE SCHEMATIC 1136, S/N 2011383 AND BELOW SCHEMATIC 1136, S/N 2011383 AND ABOVE SCHEMATIC 1151 S/N 2011383 AND BELOW SCHEMATIC 1151 S/N 2011383 AND ABOVE SCHEMATIC1152 THRU 1158 S/N 2011383 AND BELOW SCHEMATIC1152 THRU 1158 S/N 2011383 AND ABOVE SCHEMATIC1152 AND 1153 S/N 2011821 AND ABOVE SCHEMATIC 1154 THRU 1158 S/N 2011821 AND ABOVE MODELS 1152 - 1153 - 1154 - 1155 - 1156 TROUBLE SHOOTING GUIDE GAS OVENSNo main fan cool down Gas Pressure Switch Burner Switchswitch. If switch is closed and voltage present on one side only, replace switchCheck for proper line voltage to Pilot lamp is on, but Power Supply Ignition ControlFlame will not stay on Flame Sensorthen the problem is usually with thetemperature Check power supply at the DC improper adjustment. Also check for wornbearings. TheInstallation and Operations Manual Power SupplyDC Gearmotor required. This should eliminate the problem. If surge in the incoming power lines. To eliminatethis condition remove power from the time/temp switch for 15 seconds, or if display stays onTROUBLE SHOOTING GUIDE ELECTRIC OVENS adjustment knob to maximum temperature position Switch, HeatAir Pressure Switch This normally open switch should close when theas follows MODEL Main fan runs after are not achieved, replace thermocouple WITH POWER OFF: To check resistance of themaintenance. Also, most of the problems for proper readings. If these readingsConveyor will not run MODEL 1151 200 VAC THREE PHASE 60 HZ TROUBLESHOOTING GUIDE ELECTRIC OVENRelay, Main Fan REFER TO PAGE REFER TO PAGE 43 Mercury Contactor Heater ElementsConveyor will not run S/N 2011383 and above REFER TO PAGE REFER TO PAGE REFER TO PAGESTEPPER MOTOR DRIVE Conveyor will not run Thermocouple Probe Power Supply 12 VAC Power Supplyyellow wires, thermo red wire and 1 white wireexperienced, such as a rolling of IMPINGER II CONVEYOR OVEN REMOVAL, INSTALLATION, AND ADJUSTMENTRELAY, DPST 1.Shut off power at main breaker TO REMOVE BLOWER MOTOR This is part of the burner blower motor assemblyTO REMOVE THE BLOWER WHEEL FOR PERIODIC CLEANING MOTOR, BURNER BLOWERAIR PRESSURE SWITCH Page Page HEATING ELEMENTS 1.Shut off power at main breaker 1.Shut off power at the main breakerSOLENOID VALVE 1.Shut off power at main breaker 5.Loosen pipe union in piping assemblyIGNITION CONTROL 1.Shut off power at main breaker 5.Loosen 4 nuts holding manifold to burner cap ORIFICE, MAIN BURNER2.Shut off gas at main line to the oven 4.Remove control compartment coversLAMP, PILOT BURNER LENS, PILOT LAMP TACH. GENERATOR 1.Turn off power at main breaker OPTICAL ENCODER ASSEMBLY1.Remove gearmotor assembly see “GEARMOTOR” Above 7.To adjust optical encoderD C MOTOR CONTROL BOARD 1.Turn off power 2.Remove conveyor 1.Turn off power and remove conveyor4.Reverse wires fastened to terminals A+ and A 5.Reverse wires fastened to terminals T1 and T2TRANSFORMER, TIME/TEMP. DISPLAY MODEL 1100 SERIES OVENS OVEN TEMPERATURE SWITCH, DISPLAY, SETOHMS SWITCH, ON/OFF TRANSFORMER, STEP DOWN/120 VAC DIP SWITCHES FOR 50 SEC. TO 30 MIN. TIMES maximum speed potrefer HALL EFFECT SENSOR - REPLACEMENT AIR PRESSURE SWITCH, BURNER OR OVEN CAVITY 10.Assemble in reverse order BURNER ALARM - REPLACEMENT4.Remove conveyor gear motor 8.Remove top control compartment braceLETTER GENERAL –1100SERIESDESCRIPTION GENERAL 1100 SERIES BLOW UP 1136,1150,1151,1160 Thru1163 Page DESCRIPTION CONTROL COMPARTMENT - FRONTMODELS 1152 THRU LETTERCONTROL COMPARTMENT – FRONT 1152-1158BLOW UP LETTER CONTROL COMPARTMENT – REARDESCRIPTION CONTROL COMPARTMENT - REAR BLOW UP MODELS AND ABOVE MODELS 1130-1136,1150,1151S/N 2011383 AND ABOVE CONTROL COMPARTMENT – REAR BLOW UPMODELS 1160-1163S/N 2011978 AND ABOVE LETTER CONTROL COMPARTMENT – REARDESCRIPTION Page DESCRIPTION CONTROL COMPARTMENT – REARMODELS 1152 THRU 1158 S/N 2011821 AND ABOVE LETTERPage OVEN BACK ASSEMBLY – 1100 SERIES OVEN BACK ASSEMBLY – 1100 SERIES BLOW UP GEARMOTOR ASSEMBLY – 1100 SERIES GEARMOTOR ASSEMBLY – 1100 SERIES BLOW UP CONVEYOR/DOOR – 1100 SERIES CONVEYOR/DOOR – 1100 SERIES BLOW UP This page intentionally left blank This page intentionally left blank
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