Lincoln 1100 Series service manual Air Pressure Switch

Page 50

AIR PRESSURE SWITCH

1.Shut off power at main breaker.

2.Remove conveyor.

3.Remove front control compartment cover.

4.Remove air switch cover plate.

5.Disconnect wiring and mark for reassembly.

6.Loosen 2 screws and remove air switch.

7.Disconnect 1/4" air tube.

8.Reassemble in reverse order.

9.Turn on power and calibrate air switch as follows:

a)Turn adjusting screw counter clockwise to full out position.

b)Turn main fan and heat switch on.

c)Turn adjusting screw clockwise until heat shuts off.

d)Turn adjusting screw (counterclockwise) 1/4 turn and unit should heat. NOTE: Test as follows

e)Oven must be tested in heated condition.

f)Remove main fan fuse. Main fan should shut down, deactivating air switch causing heat to shut off in approximately 5 to 25 seconds.

g)Fine tune adjustment as needed.

TEMPERATURE CONTROL BOARD

NOTE: If your unit contains a Fenwal temperature control board, (see below) replace it with a thermologic control board.

TEMPERATURE CONTROL BOARD CONVERSION - FENWAL TO THERMOLOGIC (FOUND ONLY IN ELECTRIC UNITS BELOW S/N 2000861)

1.Remove Fenwal board.

2.Remove 5K ohm potentiometer

3.Remove wire #63 from oven. This wire is connected to Fenwall board at terminal #5.

4.Install new thermologic board with 2 screws.

5.Install new 2.5K ohm potentiometer.

6.Attach leads to thermologic board as shown in drawings. See Page D5.

1.Located in control compartment below drive end of the conveyor

2.Shut off power at main breaker and remove conveyor.

3.Remove front control compartment cover.

4.Remove the two mounting screws.

5.Remove the electrical leads and replace the control board.

6.Identify the style of thermologic board by looking at the top of the transformer on the board. There are five styles of boards, each identified by a color marked

on the transformer, either RED, BLUE, GREEN, GOLD, OR A SILVER DOT. Refer to Page D5 showing proper wiring connection.

NOTE:When mounting a new temperature control board, DO NOT overtighten the two mounting screws.

7.Turn the potentiometer fully counterclockwise.

8.Loosen the Dial/Knob set screw and position the 50°F mark at the pointer.

NOTE: The thermocouple of your test meter should be inserted through a finger hole in the top center of the oven, and the oven pre-heated for 30 minutes to stabilize the oven at set temperature. The thermocouple probe must not touch metal, it must sense air temperature only.

9.Adjustment of the GREEN, GOLD OR SILVER dot control board may be required when installing a new board. Adjustment is seldom required on RED and BLUE boards.

a)For RED or BLUE control boards with the temperature control dial at maximum, the reading on your temperature test meter should be between 555°F (290°C) and 575°F (302°C). If not at this temperature adjust pot P3 to achieve these

 

figures. Refer to Page D5.

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Impinger II - 1100 Series Service Manual - International

 

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Page 49 Page 51
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 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 8.Remove top control compartment brace BURNER ALARM - REPLACEMENT4.Remove conveyor gear motor 10.Assemble in reverse orderDESCRIPTION GENERAL –1100SERIESLETTER GENERAL 1100 SERIES BLOW UP 1136,1150,1151,1160 Thru1163 Page LETTER CONTROL COMPARTMENT - FRONTMODELS 1152 THRU 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 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
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