Lincoln 1100 Series Cooling Fans, VAC should now be at these fan, motors. If voltage is present

Page 27

 

Cooling Fans

120 VAC should now be at these fan

 

 

motors. If voltage is present,

 

 

check motors for shorts or opens.

 

 

WITH POWER OFF: Check for locked rotor.

Cooling fans continue

Cooling Fan Thermostat

Thermostat is normally open and may to run after

20 minute

 

have closed if control box temperature cool down

 

 

is 120°F or above.

Oven will not heat

Gas Supply

Check for adequate gas supply and

 

 

manual gas shut off valve is open.

 

 

Also, check flexible gas line connection.

 

Main Fan

If not operating, refer to “Oven Fan

 

 

Will Not Run” on Page C6.

 

Fuse 3 Amp

Check, replace if necessary.

 

Fuseholder

Check, replace if necessary.

 

Relay Oven Start

Supply voltage should be present

 

 

across these terminals.

 

Burner Switch

Check for supply voltage on both sides of

 

 

switch. If switch is closed and voltage

 

 

present on one side only, replace switch.

 

Gas Pressure Switch

This switch is located inside the gas

 

 

valve and should close when gas

 

 

pressure is present.

 

 

WITH POWER OFF: remove 3 prong plug

 

 

(on gas valve) and measure continuity between

 

 

terminals 2 and 3.

 

 

NOTE: Remove insulation pad below plug to

 

 

read numbers. If no continuity, check the

 

 

following:

 

 

Proper gas pressure supply to gas valve as

 

 

marked on the oven specification plate.

 

 

Check for proper adjustment of gas

 

 

pressure switch 8.8 on dial for

 

 

natural gas, 23 for LP, and

 

 

4.5 for Town Gas.

 

 

Check gas filter in gas valve for

 

 

blockage or damage. (See Adjustment

 

 

section for location)

 

 

If above checks are okay, but pressure

 

 

switch is still not closed, replace gas

 

 

valve.

 

Air Pressure

Check air switch terminals for supply voltage

 

Switch

at NO 2 and COM. If voltage is present on one

 

 

side only, check for air tube blockage or

 

 

misalignment. If these are okay, adjust

 

 

switch or replace necessary.

 

(Oven Cavity) High Limit

Terminals are normally closed, Thermostat

 

 

opens at 660°F (350°C). If

 

 

open, push in reset button and retest.

 

 

If thermostat will not hold for

 

 

maximum oven temperature, and oven

 

 

is not exceeding temperature dial

 

 

setting, check for proper location of

 

 

capillary bulb in its spring holder.

 

 

If above check okay, replace hi-limit

 

 

thermostat.

 

Ignition Control

Check for proper supply voltage

 

 

to ignition control.

Impinger II - 1100 Series Service Manual - International

27

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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 SWITCH, DISPLAY, SET OVEN TEMPERATUREOHMS 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 braceGENERAL –1100SERIES LETTERDESCRIPTION GENERAL 1100 SERIES BLOW UP 1136,1150,1151,1160 Thru1163 Page DESCRIPTION CONTROL COMPARTMENT - FRONTMODELS 1152 THRU LETTERCONTROL COMPARTMENT – FRONT 1152-1158BLOW UP CONTROL COMPARTMENT – REAR LETTERDESCRIPTION CONTROL COMPARTMENT - REAR BLOW UP MODELS AND ABOVE CONTROL COMPARTMENT – REAR BLOW UP MODELS 1130-1136,1150,1151S/N 2011383 AND ABOVEMODELS 1160-1163S/N 2011978 AND ABOVE CONTROL COMPARTMENT – REAR LETTERDESCRIPTION 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
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