Lincoln Series 1000, Series 1200 service manual

Page 50

Main Flame will not

Flame Monitor

(There should be a visible main flame at this time.)

stay lit

 

To check for flame monitor operation, connect a

 

 

digital volt meter (capable of measuring D.C. micro

 

 

amperes) between the flame sensor and terminal

 

 

#15 on the flame monitor. The flame monitor

 

 

requires a minimum of 4 micro amp. D.C. for proof

 

 

of flame. If these readings are not achieved,

 

 

replace sensor assembly. Also check for any type

 

 

of damage to flame sensor wire and connections.

 

 

If the reading is above the minimum required, and

 

 

the flame monitor will not supply 220 VAC to the

 

 

relay coil, replace the flame monitor.

Intermittent Heating

As Follows

Both the main fan motor and burner blower motor

 

 

are equipped with thermal protection and will cease

 

 

to operate if overheating occurs. This can cause

 

 

the units to cycle on and of intermittently. This may

 

 

be caused by improper ventilation. Also, most of

 

 

the problems listed under "oven will not heat" can

 

 

cause intermittent failure.

Conveyor will not run

Conveyor Switch

Check for 120 VAC to conveyor switch. If no

 

 

voltage is present, trace wiring back to the power

 

 

supply. WITH POWER OFF: Check continuity

 

 

between switch terminals

 

Conveyor Fuse(3A)

Check, replace if necessary.

 

Fuseholder

Check, replace if necessary.

 

Conveyor Control

Check for 120 VAC supply to primary (Stepper)

 

 

Transformer of transformer, if voltage is not

 

 

present, trace wiring back to the fuseholder. If

 

 

voltage is present, check for output voltage from

 

 

the transformer secondary. NOTE: this control

 

 

transformer outputs (2) secondary voltages: Red

 

 

Leads 29 VAC Brown Leads 10 VAC. If BOTH

 

 

secondary voltages are not present, replace the

 

 

transformer.

 

Speed Adjustment

This is a 0 to 50K ohm, 10 turn potentiometer.

 

Potentiometer

WITH POWER OFF: remove the 3 pin

 

 

potentiometer cable plug from the motor control

 

 

board. With a digital multimeter, check the ohm

 

 

reading across the red lead to the black lead, this

 

 

reading should be 50K ohms ± 5% as the

 

 

potentiometer is rotated through its 10 turn rotation.

 

 

Place the meter leads on the red lead and white

 

 

lead. Rotating the potentiometer slowly, from low to

 

 

high, the meter should show an even transition

 

 

from 0 to 50K ohms ± 5% through the 10 turn

 

 

rotation of the potentiometer. There should be no

 

 

dead or open spots through the 10 turns of the

 

 

potentiometer. Check all three leads to ground.

 

 

There should be no continuity to ground. If any of

 

 

the above checks fail, replace the potentiometer.

 

Conveyor Motor(Stepper)

NOTE: if the conveyor drive motor becomes

 

Control

jammed or begins to run at an uncontrolled speed,

 

 

the conveyor motor will stop running. To reset, turn

 

 

off the conveyor switch, wait 30 seconds, turn the

 

 

conveyor switch on. If the motor does not run after

 

 

attempting re-set, check for 2 to 29 VAC across the

 

 

motor terminals 1 to 2 and 3 to 5 on, the conveyor

 

 

motor control. If voltage is not present at both sets

 

 

of terminals, replace control.

50

Impinger I -–1000 Series Service Manual - International

Page 49 Page 51
Image 50
Page 49 Page 51
Contents Impinger Conveyor Ovens Table of Contents Conveyor Drive Sequence of Operations 1002/1003Burner Circuit 100 toSequence of Operations Heat Circuit TemperatureSequence of Operations 1028 / 1029 / 1228 ControlTime Temp Sequence of Opertions TIME/TEMPSequence of Operations / 1033, 1034, 1046 TRANSFORMER12.6V Sequence of Operations 1042 / 1043 / 1242 Model 1242 240V 50HZ Natural GAS/DUAL BeltTIME/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 Troubleshooting Guide 1000 & 1200 / GAS Ovens Symptom Possible Cause EvaluationIgnition Control For ovens withJohnson Controls Honeywell IgnitionControl Mechanical Temperature ControlFlameFor ovens with ThermostatCode Model 1030 Symption Possible Cause EvualationPage 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 CAPACITOR, Motor REMOVAL, Installation & AdjustmentsMOTOR, Main FAN FAN, MainRELAY, D.P.S.T Cool Down SwitchAbove GAS Above Electric Cooling FAN, Control BOXBurner Blower Motor Blower WHEEL, Burner To Remove the Blower Wheel for Periodic CleaningAIR Pressure Switch Manifold Pressure Adjustment Burner AssemblyManifold PRESSURE-ADJUSTMENT GAS Control ValveTemperature Control Potentiometer Replacement Temperature Control Valve Robert ShawTemperature Control Board Solenoid ValveMercury Contactor THERMOCOUPLE- ReplacementThermocouple Measurement Chart Heating ElementIgnition Control Flame Sensor 24V GNDBurner Light 24 VAC GAS Ovens Burner IgnitorTransformer 120/24 VAC Heat Light 125 VAC Electric OvensMain Orifice Burner Conveyor Motor Replacement Bodine SNConveyor Motor Replacement Baldor 1000 Series SN 4390 Potentiometer Conveyor Speed ControlOptical Encoder Assembly Coupling and Encoder DiscMotor Control Board Calibration TACH. GeneratorConveyor Motor Control Board SN 100 to 4389 Bodine SystemMotor Control Board Style 1 Control Board AdjustmentREG MIN MAX Style 2 and Style 3 Control Board Adjustment StyleStyle DIP Switches Control Switch Position OFF BEARING, Conveyor Reversing Conveyor DirectionMini Circuit Breaker Drive ENDTRANSFORMER-STEPPER Motor Control Hall Effect Sensor ReplacementBEARING, Conveyor SN 2164 and Above OLD StyleOven Temperature Temperature Gauge ReplacementThermistor Replacement TRANSFORMER, TIME/TEMP. DisplayType OFF Switch SettingsALL 1000 & 1200 Series Ovens SWITCH, DISPLAY, SET Procedure for USE of TIME/TEMP. SimulatorSwitch Replacement FAN Switch Update Dip SwitchSwitch Replacement FAN, HEAT, Conveyor GAS Valve Replacement and Adjustments Spark Generator Replacement Ignition Control ReplacementHigh Limit Thermostat Replacement Solenoid Valve ReplacementIgniter Sensor Assembly Replacement Burner Alarm Light ReplacementPilot Light 220V Replacement Burner Blower Motor ReplacementRELAY, GAS Control Replacement Model 1046,1047 Relay ASSEMBLY, Burner Blower Motor ReplacementTemperature Control Replacement Time Delay RELAY, 20 Minute ReplacementParts / Model Series 1000 & 1200 General Letter DescriptionBlow UP / 1000, 1200 General Parts / Model 1002-1003 , S/N 2584 to Blow UP / 1002, 1003 S/N 2584 to Parts / Model 1002-1003, S/N 4390 & UP SeeBlow UP / 1002, 1003 S/N 4390 & Above Parts / Model SeeBlow 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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