Lincoln 1100 Series service manual No main fan cool down

Page 26

No main fan cool down

20 Minute Time Delay

Check for 120 VAC at pin#2 and #3

 

Relay

while main fan is running. Turn off

 

 

main fan switch and 120 VAC should

 

 

continue to be present for 20 minutes.

 

Main Fan Relay

Check if relay is operating and

 

 

terminals are remaining closed for

 

 

main fan cool down of 20 minutes.

Main fan runs after

 

NOTE: The time delay relay will

20 minute cool down

 

keep the coil of the main fan relay

 

 

closed, maintaining main fan operation for

 

 

cool down for approximately 20 minutes.

 

Cool Down Relay

Contacts of the relay should

 

 

open when main fan is switched off.

 

Time Delay

120 VAC at terminal 2 should

 

 

discontinue approximately 20 minutes after main

 

 

fan is switched off. If cool down relay is open and

 

 

voltage continues at terminal 2,

 

 

replace time delay.

 

Main Fan Relay

When voltage at terminal 2 of time

 

 

delay ceases, main fan relay must open.

No control box cooling

Incoming Power

Check main circuit breakers, reset if

 

 

required, call power company if

 

 

needed.

 

Main Fan Switch

Check continuity between switch

 

 

terminals.

 

Control Box High Limit

Terminals are normally closed, and

 

Thermostat

open at 170°F ± 5°F (76.6°C ± 2.8°C).

 

Note: Discontinued at

Check for over heating and reset

 

S/N 2011821

thermostat. Test for proper operation.

 

 

If it will not reset and hold, replace.

 

Fuse, 1 Amp

Check, replace if necessary.

 

Fuseholder

Check, replace if necessary.

 

Step Down Transformer

120 VAC should be present on

 

 

secondary. Replace as needed.

 

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.

No automatic control

Incoming Power Supply

Check circuit breakers, reset if

box cooling

 

required, call power company if needed

 

 

Cooling Fan Thermostat Thermostat is normally

 

 

open and closes at 120°F ± 3 (48.9°C ± 1.7°),

 

 

and opens at 100°F ± 3°F

 

 

(37.8°C ± 1.7°C).

 

Control Box Hi Limit

Terminals are normally closed, but

 

Discontinued at S/N

open at 170°C ± 5°F (76.6°C ± 2.8°C).

 

2011821

Check for over heating and reset

 

 

thermostat. Test for proper operation.

 

 

If it will not reset and hold, then

 

 

replace.

 

Fuse, 1 Amp

Check, replace if necessary.

 

Fuseholder

Check, replace if necessary.

 

Step Down Transformer

120 VAC ± 10% should be present at

 

 

secondary of transformer. If proper

 

 

voltage is not present, check

 

 

transformer primary for proper

 

 

input. Replace as needed.

26

 

Impinger II - 1100 Series Service Manual - International

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Page 25 Page 27
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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