Lincoln Series 1200, Series 1000 service manual

Page 51

 

Conveyor Drive(Stepper)

Check the drive sprocket on motor output shaft to

 

Motor

insure that it is tight. Check motor windings

 

 

measurement should be approximately 2 ohms.

 

 

Terminals 1-5, 2-6, 3-7, 4-8. WITH POWER OFF:

 

 

Turn the motor shaft to check for jammed gear box.

 

 

If motor shaft will not turn, replace conveyor

 

 

drive(stepper) motor.

Time/Temp. Display

12 VAC Power Supply

Measure the transformer primary for a nominal 120

inoperative

(Transformer)

VAC input, if voltage is not present, trace wiring

 

 

back to the oven fan switch. Measure the

 

 

secondary output, which will normally be 12-15

 

 

VAC. Voltage across terminals 1 and 3 on the

 

 

time/temp. display should read 12-15 VAC.

 

 

Terminals 1-2 and 2-3 should be 1/2 the voltage

 

 

reading 1 to 3. If the above secondary readings are

 

 

not achieved, replace transformer.

 

Time/Temp. Display

If proper voltage is present at terminal 1,2, and 3

 

 

on time/temp. display, but the display is not lighted,

 

 

recheck all connections for tightness. If time/temp.

 

 

display is still not operating, replace the time/temp.

 

 

display.

Temp. Display out or

NOTE: Time/temp displays

Place your pyrometer thermocouple into the center

inaccurate

use two types of temperature

between finger T2 and T3 in the oven. Disconnect

 

sensor Thermistor Probe - 2

the yellow tipped thermistor leads from the

 

yellow wires. Thermocouple

time/temp. terminals 9 and 10. Measure the

 

Probe - 1 red & one white

resistance of the thermistor probe.

 

wire

 

 

Thermistor Probe

See chart on page 72 for proper resistance

 

 

readings. Inspect the thermistor bulb for its proper

 

 

location in its spring holder. Check for short in

 

 

leads where they enter the sensor bulb. Also check

 

 

each thermistor lead for short to ground.

 

Thermocouple Probe

Place your pyrometer thermocouple into the center

 

 

between fingers T2 and T3 in the oven. Connect

 

 

temperature meter to thermocouple at terminals 9

 

 

& 10 on back of the time/temp display. (Be sure to

 

 

maintain proper polarity on thermocouple

 

 

connections.) Compare actual oven temperature

 

 

with the reading at the time/temp display. If the

 

 

temperature readings match, recalibrate or replace

 

 

time/temp display. If the readings do not match,

 

 

replace thermocouple probe.

 

Power Supply

If a strange or unusual behavior is experienced,

 

 

such as a rolling of numbers, or lock-up at a given

 

 

number, first check for a display circuit lock-up.

 

 

This may be caused by a voltage spike or surge in

 

 

the incoming power lines. To eliminate this

 

 

condition, remove power from time/temp. display by

 

 

shutting off the main fan switch for 15 seconds.

 

 

This should eliminate the problem. If this does not

 

 

solve the problem, it may becoming in through the

 

 

Commercial power lines. Suggest that customer

 

 

contact their power company for evaluation.

Impinger I -–1000 Series Service Manual - International

51

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Contents Impinger Conveyor Ovens Table of Contents 100 to Sequence of Operations 1002/1003Burner Circuit Conveyor DriveSequence of Operations Control TemperatureSequence of Operations 1028 / 1029 / 1228 Heat CircuitTime Temp TIME/TEMP Sequence of OpertionsSequence of Operations / 1033, 1034, 1046 TRANSFORMER12.6V Model 1242 240V 50HZ Natural GAS/DUAL Belt Sequence of Operations 1042 / 1043 / 1242TIME/TEMP Schematic / 1002 Schematic / 1006 to Serial Numbers Q14279 Schematic / 1028, 1029, S/N Q19071 & below Schematic / 1028, 1029, S/N Q19078 & Above Schematic / 1030, to S/N Q17170 Schematic / 1030, S/N Q17171 & Above Schematic / 1032. S/N Q19077 & below Schematic / 1032, S/N Q19078 & Above Schematic / 1033, 1034, 1046 Schematic / 1042, 1043, S/N Q14279 & below Schematic / 1042, 1043, S/N Q14280 & Above Schematic / 1228 , S/N Q14790 & below Schematic / 1228, 1229, S/N Q14791 & Above Schematic / 1242 Symptom Possible Cause Evaluation Troubleshooting Guide 1000 & 1200 / GAS OvensHoneywell Ignition For ovens withJohnson Controls Ignition ControlControl Thermostat Temperature ControlFlameFor ovens with MechanicalCode Symption Possible Cause Evualation Model 1030Page Page Page Page Page Page Page Troubleshooting Guide 1000 & 1200 Series / Electric Ovens Page Page Page Page Page Page Troubleshooting / GAS Ovens 1033, 1034, 1046 Page Page Page Page Page Page FAN, Main REMOVAL, Installation & AdjustmentsMOTOR, Main FAN CAPACITOR, MotorCooling FAN, Control BOX Cool Down SwitchAbove GAS Above Electric RELAY, D.P.S.TBurner Blower Motor To Remove the Blower Wheel for Periodic Cleaning AIR Pressure SwitchBlower WHEEL, Burner GAS Control Valve Burner AssemblyManifold PRESSURE-ADJUSTMENT Manifold Pressure AdjustmentSolenoid Valve Temperature Control Valve Robert ShawTemperature Control Board Temperature Control Potentiometer ReplacementHeating Element THERMOCOUPLE- ReplacementThermocouple Measurement Chart Mercury ContactorIgnition Control 24V GND Flame SensorHeat Light 125 VAC Electric Ovens Burner IgnitorTransformer 120/24 VAC Burner Light 24 VAC GAS OvensPotentiometer Conveyor Speed Control Conveyor Motor Replacement Bodine SNConveyor Motor Replacement Baldor 1000 Series SN 4390 Main Orifice BurnerCoupling and Encoder Disc Optical Encoder AssemblySN 100 to 4389 Bodine System TACH. GeneratorConveyor Motor Control Board Motor Control Board CalibrationStyle 1 Control Board Adjustment REG MIN MAXMotor Control Board Style Style 2 and Style 3 Control Board AdjustmentStyle DIP Switches Control Switch Position OFF Drive END Reversing Conveyor DirectionMini Circuit Breaker BEARING, ConveyorOLD Style Hall Effect Sensor ReplacementBEARING, Conveyor SN 2164 and Above TRANSFORMER-STEPPER Motor ControlTRANSFORMER, TIME/TEMP. Display Temperature Gauge ReplacementThermistor Replacement Oven TemperatureSwitch Settings ALL 1000 & 1200 Series OvensType OFF Procedure for USE of TIME/TEMP. Simulator SWITCH, DISPLAY, SETDip Switch Switch Replacement FAN, HEAT, ConveyorSwitch Replacement FAN Switch Update GAS Valve Replacement and Adjustments Solenoid Valve Replacement Ignition Control ReplacementHigh Limit Thermostat Replacement Spark Generator ReplacementBurner Blower Motor Replacement Burner Alarm Light ReplacementPilot Light 220V Replacement Igniter Sensor Assembly ReplacementTime Delay RELAY, 20 Minute Replacement Relay ASSEMBLY, Burner Blower Motor ReplacementTemperature Control Replacement RELAY, GAS Control Replacement Model 1046,1047Letter Description Parts / Model Series 1000 & 1200 GeneralBlow UP / 1000, 1200 General Parts / Model 1002-1003 , S/N 2584 to Blow UP / 1002, 1003 S/N 2584 to See Parts / Model 1002-1003, S/N 4390 & UPBlow UP / 1002, 1003 S/N 4390 & Above See Parts / ModelBlow UP Parts Blow UP / 1028, 1029 PARTS/ Model Blow UP Parts / 1042 BLOW-UP / 1042 Parts / 1033, 1034, 1046 BLOW-UP / 1033, 1034, 1046 Parts Blow UP / 1228 Parts / 1242 Blow UP / 1242 Parts / Oven Back GAS Blow UP / Oven Back GAS Parts / Oven BACK- Electric Blow UP / Oven Back Electric Parts / Conveyor Motor Assembly S/N 4390 & Above Blow UP / Conveyor Motor Assembly S/N 4390 & Above Parts / Series 1000 Conveyor Blow UP / Series 1000 Conveyor Parts / Series 1200 Conveyor Control Blow UP / Series 1200 Conveyor Control Parts / Series 1200 Conveyor Blow UP / Series 1200 Conveyor 112
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