Lincoln 1100 Series service manual STEPPER MOTOR DRIVE Conveyor will not run

Page 44

S/N 2011383 and above Temp. Display out or inaccurate S/N 2011383 and above

STEPPER MOTOR DRIVE Conveyor will not run

WITH POWER OFF:

REFER TO PAGE 45

REFER TO PAGE 33

REFER TO PAGE 45

Conveyor Switch	Check for 120 VAC to conveyor switch. If no
voltage is present, trace wiring back to the oven		power source.
	Check conti nuity between switch terminals.
Conveyor Fuse 3AMP	Check, replace if necessary. (Not used on
	Model 1151)
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	NOTE: if the conveyor drive motor
(Stepper) Control	becomes jammed, the motor will stop
	turning. To reset, turn off conveyor
	switch, wait 10 seconds and turn the
	conveyor switch on.

If the motor does not run, 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

44	Impinger II - 1100 Series Service Manual - International

Image 44

Contents SERVICE MANUAL IMPINGER CONVEYOR OVENSMODEL 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 temperature reading by the display into a 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 TROUBLE SHOOTING GUIDE GAS OVENS MODELS 1152 - 1153 - 1154 - 1155 - 1156No main fan cool down Burner Switch switch. If switch is closed and voltagepresent on one side only, replace switch Gas Pressure SwitchCheck for proper line voltage to Power Supply Ignition Control Flame will not stay onFlame Sensor Pilot lamp is on, butthen the problem is usually with thetemperature improper adjustment. Also check for worn bearings. TheInstallation and Operations ManualPower Supply Check power supply at the DCDC Gearmotor surge in the incoming power lines. To eliminate this condition remove power from the time/tempswitch for 15 seconds, or if display stays on required. This should eliminate the problem. IfTROUBLE SHOOTING GUIDE ELECTRIC OVENS Switch, Heat Air Pressure SwitchThis normally open switch should close when the adjustment knob to maximum temperature positionas follows MODEL Main fan runs after WITH POWER OFF: To check resistance of the maintenance. Also, most of the problemsfor proper readings. If these readings are not achieved, replace thermocoupleConveyor will not run TROUBLESHOOTING GUIDE ELECTRIC OVEN MODEL 1151 200 VAC THREE PHASE 60 HZRelay, Main Fan Mercury Contactor Heater Elements Conveyor will not run S/N 2011383 and aboveREFER TO PAGE REFER TO PAGE REFER TO PAGE REFER TO PAGE REFER TO PAGE 43STEPPER MOTOR DRIVE Conveyor will not run 12 VAC Power Supply yellow wires, thermored wire and 1 white wire Thermocouple Probe Power Supplyexperienced, such as a rolling of REMOVAL, INSTALLATION, AND ADJUSTMENT IMPINGER II CONVEYOR OVENRELAY, DPST 1.Shut off power at main breaker This is part of the burner blower motor assembly TO REMOVE THE BLOWER WHEEL FOR PERIODIC CLEANINGMOTOR, BURNER BLOWER TO REMOVE BLOWER MOTORAIR PRESSURE SWITCH Page Page 1.Shut off power at the main breaker SOLENOID VALVE 1.Shut off power at 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 ORIFICE, MAIN BURNER 2.Shut off gas at main line to the oven4.Remove control compartment covers 5.Loosen 4 nuts holding manifold to burner capLAMP, PILOT BURNER LENS, PILOT LAMP OPTICAL ENCODER ASSEMBLY 1.Remove gearmotor assembly see “GEARMOTOR” Above7.To adjust optical encoder TACH. GENERATOR 1.Turn off power at main breakerD C MOTOR CONTROL BOARD 1.Turn off power and remove conveyor 4.Reverse wires fastened to terminals A+ and A5.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 BURNER ALARM - REPLACEMENT 4.Remove conveyor gear motor8.Remove top control compartment brace 10.Assemble in reverse orderDESCRIPTION GENERAL –1100SERIESLETTER GENERAL 1100 SERIES BLOW UP 1136,1150,1151,1160 Thru1163 Page CONTROL COMPARTMENT - FRONT MODELS 1152 THRULETTER 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 CONTROL COMPARTMENT – REAR MODELS 1152 THRU 1158 S/N 2011821 AND ABOVELETTER 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