Lincoln Series 1000, Series 1200 service manual GAS Valve Replacement and Adjustments

Page 76

THE FOLLOWING ITEMS ARE USED IN THE MODEL 1030, 1046, 1047

IMPINGER OVEN (EXPORT)

AIR PRESSURE SWITCHES - REPLACEMENT AND ADJUSTMENT

1.Remove control panel top.

2.Disconnect wires from switch making note of wire number and location for reinstallation.

3.Remove air tube from switch assembly.

4.Remove switch from wire hanger.

5.Install new switch in reverse order, make sure air tube is not blocked miss-aligned. Adjust as needed.

To adjust the air pressure switch, remove snap on cover on the side of the switch to expose adjusting screw. To increase sensitivity, turn screw counter clockwise; to decrease sensitivity, turn screw clockwise. Check for proper line voltage switching from N.C. to N.O. as the air pressure switch closes.

GAS VALVE - REPLACEMENT AND ADJUSTMENTS

1.Remove control panel top and front cover.

2.Disconnect the gas piping from the back of the unit.

3.Remove the four (4) screws from the incoming nipple mounting bracket.

4.Remove incoming nipple.

5.Disconnect two (2) plugs, (1 ) 3 prong and (1 ) 4 prong - Note location.

6.Disconnect pipe union just above gas valve and remove assembly.

7.Reassemble in reverse order (check all pipe fittings for leaks). After assembled, check for proper adjustment of gas pressure switch, 8.8 on dial for natural gas, 23 for L.P. Gas and 4.5 for town gas.

8.Check and adjust manifold pressure. Remove pressure tap located in gas piping above the gas valve prior to the burner orifice and install manometer . Adjustment screw is located on the front of the valve, remove plastic cap and adjust as needed: 3.5" W.C. for Natural Gas and 10" W.C. for L.P.

9.Check gas filter by removing cover plate (located on either side of valve). Remove four

(4) screws and slide filter out of valve housing and inspect. Reassemble in reverse order and check for leaks around cover.

SIDE VIEW

FILTER

COVER

PLATE

PRESSURE CONTROLLER ADJUSTMENT

FILTER

COVER

PLATE

	TOP VIEW
			OUTPUT
			MANIFOLD
			PRESSURE
			ADJUSTMENT
	+
		gnd	ELECTRICAL
-	1	2	CONNECTOR
-	1	2
		3
	3
2			ELECTRICAL
			ELECTRICAL
	gnd		CONNECTOR

76	Impinger I -–1000 Series Service Manual - International

Image 76

Contents Impinger Conveyor Ovens Table of Contents Sequence of Operations 1002/1003 Burner CircuitConveyor Drive 100 toSequence of Operations Temperature Sequence of Operations 1028 / 1029 / 1228Heat Circuit 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 EvaluationFor ovens with Johnson ControlsIgnition Control Honeywell IgnitionControl Temperature Control FlameFor ovens withMechanical 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 REMOVAL, Installation & Adjustments MOTOR, Main FANCAPACITOR, Motor FAN, MainCool Down Switch Above GAS Above ElectricRELAY, D.P.S.T Cooling FAN, Control BOXBurner Blower Motor AIR Pressure Switch To Remove the Blower Wheel for Periodic CleaningBlower WHEEL, Burner Burner Assembly Manifold PRESSURE-ADJUSTMENTManifold Pressure Adjustment GAS Control ValveTemperature Control Valve Robert Shaw Temperature Control BoardTemperature Control Potentiometer Replacement Solenoid ValveTHERMOCOUPLE- Replacement Thermocouple Measurement ChartMercury Contactor Heating ElementIgnition Control Flame Sensor 24V GNDBurner Ignitor Transformer 120/24 VACBurner Light 24 VAC GAS Ovens Heat Light 125 VAC Electric OvensConveyor Motor Replacement Bodine SN Conveyor Motor Replacement Baldor 1000 Series SN 4390Main Orifice Burner Potentiometer Conveyor Speed ControlOptical Encoder Assembly Coupling and Encoder DiscTACH. Generator Conveyor Motor Control BoardMotor Control Board Calibration SN 100 to 4389 Bodine SystemREG MIN MAX Style 1 Control Board AdjustmentMotor Control Board Style 2 and Style 3 Control Board Adjustment StyleStyle DIP Switches Control Switch Position OFF Reversing Conveyor Direction Mini Circuit BreakerBEARING, Conveyor Drive ENDHall Effect Sensor Replacement BEARING, Conveyor SN 2164 and AboveTRANSFORMER-STEPPER Motor Control OLD StyleTemperature Gauge Replacement Thermistor ReplacementOven Temperature TRANSFORMER, TIME/TEMP. Display ALL 1000 & 1200 Series Ovens Switch Settings Type OFF SWITCH, DISPLAY, SET Procedure for USE of TIME/TEMP. SimulatorSwitch Replacement FAN, HEAT, Conveyor Dip SwitchSwitch Replacement FAN Switch Update GAS Valve Replacement and Adjustments Ignition Control Replacement High Limit Thermostat ReplacementSpark Generator Replacement Solenoid Valve ReplacementBurner Alarm Light Replacement Pilot Light 220V ReplacementIgniter Sensor Assembly Replacement Burner Blower Motor ReplacementRelay ASSEMBLY, Burner Blower Motor Replacement Temperature Control ReplacementRELAY, GAS Control Replacement Model 1046,1047 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