Lincoln 1100 Series Troubleshooting Guide Electric Oven, MODEL 1151 200 VAC THREE PHASE 60 HZ

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TROUBLESHOOTING GUIDE ELECTRIC OVEN

MODEL 1151 200 VAC THREE PHASE 60 HZ

REFER TO PROPER SCHEMATIC FOR INDENTIFIED COMPONENTS

SYMPTON	POSSIBLE CAUSE	EVALUATION
Oven fan will not run	Incoming Power Supply	Check circuit breakers. Reset if required.
		Call Power Co. if needed.
	Fuses,10 Amp,Main Fan	Check, replace if necessary.
	Fuseholder	Check, replace if necessary.
	Fuses, 1 Amp,	Check, replace if necessary.
	Transformer
	Fuseholder	Check, replace if necessary.
	Transformer, Control	120 VAC ± 10% should be present
		at secondary of transformer. If
		proper voltage is not present, check
		transformer primary for proper
		input. Replace as needed.
	Thermostat, High Limit,	Terminals are normally closed. If open,
	Oven Cavity	reset the thermostat and test for proper
	replace thermostat.	operation. If it will not reset and hold,
	replace thermostat.
	Switch, Main	Check for continuity between switch
	Fan	terminals.
	Relay, Oven Start	Check for continuity at relay coil, and
		visually check for pull in of contacts.
	20 Minute Time Delay	Check for 120 VAC at terminals #1 to
		neutral on 20 minute Time Delay Relay.
		If no voltage is present, trace wiring
		back to power source. If voltage is
		present at terminal #1, check for 120
		VAC at terminal #2 to neutral. If no voltage is
		present, and Main Fan Switch is closed, replace
		Time Delay.
	Main Fan Relay	Check for 120 VAC to coil of the Relay.
		If no voltage is present, trace wiring
		back to 20 minute Time Delay Relay. If
		voltage is present, check to insure
		contacts are closing.
	Main Fan Motor	Check for opens, shorts, or grounds.
		WITH POWER OFF: Turn fan blade to
		check for locked rotor.
	Capacitor	Check for opens, shorts, or grounds.
No main fan cool down	20 Minute Time Delay	Check for 120 VAC at terminal #2 to
		neutral while oven is “on”. Turn off the
		main fan switch, 120 VAC should
		continue to be present for 20 minutes.
		If voltage is not present for
		approximately 20 minutes, replace the
		timer.
Impinger II - 1100 Series Service Manual - International		41

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Contents IMPINGER CONVEYOR OVENS SERVICE MANUALMODEL 1100 SERIES INTERNATIONALTABLE 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 switch. If switch is closed and voltage Burner Switchpresent on one side only, replace switch Gas Pressure SwitchCheck for proper line voltage to Flame will not stay on Power Supply Ignition ControlFlame Sensor Pilot lamp is on, butthen the problem is usually with thetemperature bearings. TheInstallation and Operations Manual improper adjustment. Also check for wornPower Supply Check power supply at the DCDC Gearmotor this condition remove power from the time/temp surge in the incoming power lines. To eliminateswitch for 15 seconds, or if display stays on required. This should eliminate the problem. IfTROUBLE SHOOTING GUIDE ELECTRIC OVENS Air Pressure Switch Switch, HeatThis normally open switch should close when the adjustment knob to maximum temperature positionas follows MODEL Main fan runs after maintenance. Also, most of the problems WITH POWER OFF: To check resistance of thefor proper readings. If these readings are not achieved, replace thermocoupleConveyor will not run MODEL 1151 200 VAC THREE PHASE 60 HZ TROUBLESHOOTING GUIDE ELECTRIC OVENRelay, Main Fan Conveyor will not run S/N 2011383 and above Mercury Contactor Heater ElementsREFER TO PAGE REFER TO PAGE REFER TO PAGE REFER TO PAGE REFER TO PAGE 43STEPPER MOTOR DRIVE Conveyor will not run yellow wires, thermo 12 VAC Power Supplyred wire and 1 white wire Thermocouple Probe Power Supplyexperienced, such as a rolling of IMPINGER II CONVEYOR OVEN REMOVAL, INSTALLATION, AND ADJUSTMENTRELAY, DPST 1.Shut off power at main breaker TO REMOVE THE BLOWER WHEEL FOR PERIODIC CLEANING This is part of the burner blower motor assemblyMOTOR, BURNER BLOWER TO REMOVE BLOWER MOTORAIR PRESSURE SWITCH Page Page SOLENOID VALVE 1.Shut off power at main breaker 1.Shut off power at the main breaker5.Loosen pipe union in piping assembly HEATING ELEMENTS 1.Shut off power at main breakerIGNITION CONTROL 1.Shut off power at main breaker 2.Shut off gas at main line to the oven ORIFICE, MAIN BURNER4.Remove control compartment covers 5.Loosen 4 nuts holding manifold to burner capLAMP, PILOT BURNER LENS, PILOT LAMP 1.Remove gearmotor assembly see “GEARMOTOR” Above OPTICAL ENCODER ASSEMBLY7.To adjust optical encoder TACH. GENERATOR 1.Turn off power at main breakerD C MOTOR CONTROL BOARD 4.Reverse wires fastened to terminals A+ and A 1.Turn off power and remove conveyor5.Reverse wires fastened to terminals T1 and T2 1.Turn off power 2.Remove conveyorTRANSFORMER, TIME/TEMP. DISPLAY MODEL 1100 SERIES OVENS OHMS SWITCH, DISPLAY, SETOVEN TEMPERATURE 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 4.Remove conveyor gear motor BURNER ALARM - REPLACEMENT8.Remove top control compartment brace 10.Assemble in reverse orderDESCRIPTION GENERAL –1100SERIESLETTER GENERAL 1100 SERIES BLOW UP 1136,1150,1151,1160 Thru1163 Page MODELS 1152 THRU CONTROL COMPARTMENT - FRONTLETTER DESCRIPTIONCONTROL COMPARTMENT – FRONT 1152-1158BLOW UP DESCRIPTION CONTROL COMPARTMENT – REARLETTER CONTROL COMPARTMENT - REAR BLOW UP MODELS AND ABOVE MODELS 1160-1163S/N 2011978 AND ABOVE CONTROL COMPARTMENT – REAR BLOW UPMODELS 1130-1136,1150,1151S/N 2011383 AND ABOVE DESCRIPTION CONTROL COMPARTMENT – REARLETTER Page MODELS 1152 THRU 1158 S/N 2011821 AND ABOVE CONTROL COMPARTMENT – REARLETTER DESCRIPTIONPage 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