Lincoln 1100 Series Switch, Heat, to neutral. Replace if defective, Air Pressure Switch

Page 35

Switch, Heat

With switch on, check for 120 VAC on both terminals

 

to neutral. Replace if defective.

Air Pressure Switch

This normally open switch should close when the

 

main fan is activated. Adjust if necessary (Refer to

 

Section D). Replace if defective.

Fuse, 3 Amp

Check, replace if necessary.

Fuseholder

Check, replace if necessary.

Temperature Control

Check for 120 VAC supply at terminal #11 to neutral

 

on temperature control. If no voltage is present, trace

 

wiring back to 3 amp fuse. Turn the temperature

 

adjustment knob to maximum temperature position

 

and check for 120 VAC at the load terminal (#9) and

 

neutral. If 120 VAC is present and unit is not heat

 

-ing, refer to “Mercury Contactor” for next check.

 

If 120 VAC is not present, proceed.

Thermocouple Probe

WITH POWER ON AND THERMOCOUPLE

 

LEADS ATTACHED TO THE TEMPERATURE

 

CONTROL BOARD: measure D. C. millivolt output of

 

these leads. Refer to thermocouple chart in Section

 

D for proper readings. If these readings are not

 

achieved, replace thermocouple.

Temperature Control

WITH POWER OFF: remove the

Potentiometer

potentiometer leads from the

 

temperature control board and measure ohms from

 

black to white leads. The reading should be from

 

approximately 0 to 2.5k ohms as the dial of the

 

potentiometer is turned throughout its full rotation.

 

From black to red leads, the reading should be

 

approximately 2.5k ohms (constant) throughout the

 

full rotation of the dial. If these readings are not

 

achieved, replace potentiometer. If the thermocouple

 

probe and the control potentiometer check good,

 

then the problem is usually with the temperature

 

control board.

Mercury Contactor

Check for 120 VAC to the contactor coil. If voltage is

 

present and contact will not activate, replace the

 

contactor.Also, check each contactor for proper

 

high voltage input and output.

Heater Elements

Check the Amp. draw on each hot leg for

 

proper load.

 

Check the specifications plate for rating

 

information.

 

If the Amp. draw is low or high, check

 

the individual elements for opens,

 

shorts, and proper resistance.

 

WITH POWER OFF: To check resistance

 

of the elements, remove all leads from

 

the elements and use an accurate digital

 

VOM. The element resistance should be

Impinger II - 1100 Series Service Manual - International

35

Page 34 Page 36
Image 35
Page 34 Page 36
Contents INTERNATIONAL SERVICE MANUALIMPINGER CONVEYOR OVENS MODEL 1100 SERIESTABLE 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 Gas Pressure Switch Burner Switchswitch. If switch is closed and voltage present on one side only, replace switchCheck for proper line voltage to Pilot lamp is on, but Power Supply Ignition ControlFlame will not stay on Flame Sensorthen the problem is usually with thetemperature Check power supply at the DC improper adjustment. Also check for wornbearings. TheInstallation and Operations Manual Power SupplyDC Gearmotor required. This should eliminate the problem. If surge in the incoming power lines. To eliminatethis condition remove power from the time/temp switch for 15 seconds, or if display stays onTROUBLE SHOOTING GUIDE ELECTRIC OVENS adjustment knob to maximum temperature position Switch, HeatAir Pressure Switch This normally open switch should close when theas follows MODEL Main fan runs after are not achieved, replace thermocouple WITH POWER OFF: To check resistance of themaintenance. Also, most of the problems for proper readings. If these readingsConveyor will not run MODEL 1151 200 VAC THREE PHASE 60 HZ TROUBLESHOOTING GUIDE ELECTRIC OVENRelay, Main Fan REFER TO PAGE REFER TO PAGE 43 Mercury Contactor Heater ElementsConveyor will not run S/N 2011383 and above REFER TO PAGE REFER TO PAGE REFER TO PAGESTEPPER MOTOR DRIVE Conveyor will not run Thermocouple Probe Power Supply 12 VAC Power Supplyyellow wires, thermo red wire and 1 white wireexperienced, such as a rolling of IMPINGER II CONVEYOR OVEN REMOVAL, INSTALLATION, AND ADJUSTMENTRELAY, DPST 1.Shut off power at main breaker TO REMOVE BLOWER MOTOR This is part of the burner blower motor assemblyTO REMOVE THE BLOWER WHEEL FOR PERIODIC CLEANING MOTOR, BURNER BLOWERAIR PRESSURE SWITCH Page Page HEATING ELEMENTS 1.Shut off power at main breaker 1.Shut off power at the main breakerSOLENOID VALVE 1.Shut off power at main breaker 5.Loosen pipe union in piping assemblyIGNITION CONTROL 1.Shut off power at main breaker 5.Loosen 4 nuts holding manifold to burner cap ORIFICE, MAIN BURNER2.Shut off gas at main line to the oven 4.Remove control compartment coversLAMP, PILOT BURNER LENS, PILOT LAMP TACH. GENERATOR 1.Turn off power at main breaker OPTICAL ENCODER ASSEMBLY1.Remove gearmotor assembly see “GEARMOTOR” Above 7.To adjust optical encoderD C MOTOR CONTROL BOARD 1.Turn off power 2.Remove conveyor 1.Turn off power and remove conveyor4.Reverse wires fastened to terminals A+ and A 5.Reverse wires fastened to terminals T1 and T2TRANSFORMER, 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 10.Assemble in reverse order BURNER ALARM - REPLACEMENT4.Remove conveyor gear motor 8.Remove top control compartment braceDESCRIPTION GENERAL –1100SERIESLETTER GENERAL 1100 SERIES BLOW UP 1136,1150,1151,1160 Thru1163 Page DESCRIPTION CONTROL COMPARTMENT - FRONTMODELS 1152 THRU LETTERCONTROL 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 DESCRIPTION CONTROL COMPARTMENT – REARMODELS 1152 THRU 1158 S/N 2011821 AND ABOVE LETTERPage 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
Top Page Image Contents