Lincoln 1100 Series service manual SEQUENCE OF OPERATIONS 1104 thru

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SEQUENCE OF OPERATIONS 1104 thru 1106

MODEL 1104

ELECTRIC

380/220 VAC

50 HZ

3 PHASE

MODEL 1105

ELECTRIC

415/240 VAC

50 HZ

3 PHASE

MODEL 1106

ELECTRIC

240 VAC

50 HZ

1 PHASE

POWER SUPPLY

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

 

Models 1104 and 1105 and a three conductor service on the 1106.

MAIN FAN CIRCUIT

Power is permanently supplied (through a 10A fuse) to the normally open

 

contact of the main fan relay, the normally open cool-down thermostat and

 

to the normally open main fan switch. Closing the main fan switch supplies

 

line voltage to the primary of the power transformer (The transformer steps

 

the voltage down to 120 VAC for the control circuit). 120 VAC is supplied

 

to the coil of the main fan relay, its normally open contacts now close,

 

energizing the main fan motor. Closing the main fan switch also supplies

 

120 VAC to the cooling fan and, through a normally closed hi-limit thermo-

 

stat, the time/temp display, heat and conveyor switches.

 

 

HEATER CIRCUIT

Closing the Heater Switch provides power through the normally open Air

 

Pressure Switch 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.

 

 

 

 

NOTE: Units with Serial Number prior to 2000782 were equipped with a

 

Fenwall Temperature Control and used a Temperature Control Potentiom-

 

eter rated at 5K ohms.

 

 

 

CONVEYOR DRIVE

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

 

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

 

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

 

Speed Control Potentiometer (5,000 ohm, 10 turn) will change resistance

 

at terminals P1, P2, and P3 varying 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 reducer gear box and the tach. generator. The

 

tach. generator is 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 Transformer, is supplied to terminals 1, 2,

 

and 3 of the Time/Temp. Display. The secondary output of the Transformer

 

is nominally 12. 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 (cemented

 

to tach. coupling) to break the infra-red light beam of the optical encoder

 

(mounted on gear motor) producing electrical pulses that are transmitted

 

to the display. The display converts these pulses into a read-out of min

 

The temperature portion of the Time/Temp Display uses a Thermistor

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 SWITCH, DISPLAY, SET OVEN TEMPERATUREOHMS 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 braceGENERAL –1100SERIES LETTERDESCRIPTION GENERAL 1100 SERIES BLOW UP 1136,1150,1151,1160 Thru1163 Page DESCRIPTION CONTROL COMPARTMENT - FRONTMODELS 1152 THRU LETTERCONTROL COMPARTMENT – FRONT 1152-1158BLOW UP CONTROL COMPARTMENT – REAR LETTERDESCRIPTION CONTROL COMPARTMENT - REAR BLOW UP MODELS AND ABOVE CONTROL COMPARTMENT – REAR BLOW UP MODELS 1130-1136,1150,1151S/N 2011383 AND ABOVEMODELS 1160-1163S/N 2011978 AND ABOVE CONTROL COMPARTMENT – REAR LETTERDESCRIPTION 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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