Lincoln 1100 Series service manual experienced, such as a rolling of

Page 46

 

 

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 the 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.

Temp display inaccurate,

Time/Temp Display

Perform the power supply check, the

erratic, or inoperative

 

thermistor probe check, and then

 

 

perform the time/temp simulator test.

 

 

Refer to Section D for instructions.

 

 

Remember, when using the time/temp

 

 

simulator, remove all leads from the

 

 

back of the time/temp display except the

 

 

3 power leads.

 

 

After completion of the test, and if re-

 

 

installing time/temp display back in the

 

 

oven, the dip switches must be reset for

 

 

oven operation, and the time/temp

 

 

display must be recalibrated. If

 

 

readings are not achieved, replace

 

 

display.

Time Display inaccurate,

 

Perform all checks as in the above

erratic, or inoperative

 

evaluation. If the time check is okay,

 

 

refer to the next section.

 

Conveyor Drive

Check to see if the conveyor drive

 

(Stepper) Motor

(stepper) motor is running. If motor

 

 

is not running, refer to “Conveyor will

 

 

not run” on Page 45.

 

Magnet

Check to insure that the magnet

 

 

(cemented to shaft of conveyor drive

 

 

[stepper] motor) has not been damaged,

 

 

or come loose from motor shaft.

 

 

Replace as needed.

 

Hall Effect Sensor

Check for any physical damage to Hall

 

 

Effect sensor (mounted on conveyor

 

 

drive [stepper] motor). Check all

 

 

wiring and connections for damage.

 

 

If the motor is running, the magnet is

 

 

in place, but the display shows”—:—”

 

 

the Hall Effect Sensor may be defective

 

 

or improperly connected.

 

Conveyor Drive

Check all connections for tightness or

 

(Stepper Control)

proper location and check all wiring

 

 

for visible damage. Replace as needed.

 

 

If there is still no time display and all

 

 

the above have checked out, replace the

 

 

stepper control.

46

 

Impinger II - 1100 Series Service Manual - International

Image 46
Contents MODEL 1100 SERIES SERVICE MANUALIMPINGER CONVEYOR OVENS 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 present on one side only, replace switch Burner Switchswitch. If switch is closed and voltage Gas Pressure SwitchCheck for proper line voltage to Flame Sensor Power Supply Ignition ControlFlame will not stay on Pilot lamp is on, butthen the problem is usually with thetemperature Power Supply improper adjustment. Also check for wornbearings. TheInstallation and Operations Manual Check power supply at the DCDC Gearmotor switch for 15 seconds, or if display stays on surge in the incoming power lines. To eliminatethis condition remove power from the time/temp required. This should eliminate the problem. IfTROUBLE SHOOTING GUIDE ELECTRIC OVENS This normally open switch should close when the Switch, HeatAir Pressure Switch adjustment knob to maximum temperature positionas follows MODEL Main fan runs after for proper readings. If these readings WITH POWER OFF: To check resistance of themaintenance. Also, most of the problems are not achieved, replace thermocoupleConveyor will not run TROUBLESHOOTING GUIDE ELECTRIC OVEN MODEL 1151 200 VAC THREE PHASE 60 HZRelay, Main Fan REFER TO PAGE REFER TO PAGE REFER TO PAGE Mercury Contactor Heater ElementsConveyor will not run S/N 2011383 and above REFER TO PAGE REFER TO PAGE 43STEPPER MOTOR DRIVE Conveyor will not run red wire and 1 white wire 12 VAC Power Supplyyellow wires, thermo 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 MOTOR, BURNER BLOWER This is part of the burner blower motor assemblyTO REMOVE THE BLOWER WHEEL FOR PERIODIC CLEANING TO REMOVE BLOWER MOTORAIR PRESSURE SWITCH Page Page 5.Loosen pipe union in piping assembly 1.Shut off power at the main breakerSOLENOID VALVE 1.Shut off power at main breaker HEATING ELEMENTS 1.Shut off power at main breakerIGNITION CONTROL 1.Shut off power at main breaker 4.Remove control compartment covers ORIFICE, MAIN BURNER2.Shut off gas at main line to the oven 5.Loosen 4 nuts holding manifold to burner capLAMP, PILOT BURNER LENS, PILOT LAMP 7.To adjust optical encoder OPTICAL ENCODER ASSEMBLY1.Remove gearmotor assembly see “GEARMOTOR” Above TACH. GENERATOR 1.Turn off power at main breakerD C MOTOR CONTROL BOARD 5.Reverse wires fastened to terminals T1 and T2 1.Turn off power and remove conveyor4.Reverse wires fastened to terminals A+ and A 1.Turn off power 2.Remove conveyorTRANSFORMER, TIME/TEMP. DISPLAY MODEL 1100 SERIES OVENS OVEN TEMPERATURE SWITCH, DISPLAY, SETOHMS 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 8.Remove top control compartment brace BURNER ALARM - REPLACEMENT4.Remove conveyor gear motor 10.Assemble in reverse orderLETTER GENERAL –1100SERIESDESCRIPTION GENERAL 1100 SERIES BLOW UP 1136,1150,1151,1160 Thru1163 Page LETTER CONTROL COMPARTMENT - FRONTMODELS 1152 THRU DESCRIPTIONCONTROL COMPARTMENT – FRONT 1152-1158BLOW UP LETTER CONTROL COMPARTMENT – REARDESCRIPTION CONTROL COMPARTMENT - REAR BLOW UP MODELS AND ABOVE MODELS 1130-1136,1150,1151S/N 2011383 AND ABOVE CONTROL COMPARTMENT – REAR BLOW UPMODELS 1160-1163S/N 2011978 AND ABOVE LETTER CONTROL COMPARTMENT – REARDESCRIPTION Page LETTER CONTROL COMPARTMENT – REARMODELS 1152 THRU 1158 S/N 2011821 AND ABOVE 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