Lincoln 1100 Series service manual Relay, Main Fan

Page 42

 

Relay, Main Fan

Check if relay is operating and that the contacts r

 

 

emain closed during the 20 minute cool down.

Main fan continues to

20 Minute Time Delay

NOTE: ON/OFF operation of fan switch

to run after cool down

 

will set the timer to 20 minutes. If the

 

 

timer is accidentally reset, turn off main breaker for

 

 

15 seconds to cancel. If 120 VAC continues to be

 

 

present at terminals 2 and 3 after 20 minutes, replace

 

 

the timer.

 

Relay, Main Fan

Relay Contacts should open when the relay

 

 

coil is de-energized.

No control box cooling

Main Fan

Check for main fan operation. If not operating, refer

 

 

to “Oven Fan Will Not Run”.

 

Relay,Oven Start

Check relay contacts. 120 VAC should be present.

 

Cooling Fan Motor

120 VAC should be present at the fan motor. If

 

 

voltage is present, check for opens or shorts.

 

 

WITH POWER OFF: Check for locked rotor

 

 

of the fan motor.

No automatic control

Thermostat, Cooling Fan

Check the cooling fan thermostat. box cooling

 

 

(Thermostat closes at 120°F and opens at 100°F.)

 

 

With the cooling fan thermostat pre-heated, check for

 

 

continuity. If switch is open, replace.

 

Cooling Fan Motor

120 VAC should be present at the fan

 

 

motor. If voltage is present, check for

 

 

opens or shorts.

 

 

WITH POWER OFF: Check for locked

 

 

rotor of the fan motor.

Control box cooling fan

Thermostat, Cooling

This normally open thermostat should

continues to run

Fan

close at 120°F (48.9°C) and reopen at

 

 

100°F (37.8°C).

Oven will not heat

Main Fan Motor

Check for main fan operation. If it is not

 

 

operating, refer to “Oven fan will not run”.

 

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.

 

Temperature Control

Check for 120 VAC supply at terminal

 

 

#11 to neutral on temperature control.

 

 

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 heating, 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

42

 

Impinger II - 1100 Series Service Manual - International

Page 41 Page 43
Image 42
Page 41 Page 43
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 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 8.Remove top control compartment brace BURNER ALARM - REPLACEMENT4.Remove conveyor gear motor 10.Assemble in reverse orderGENERAL –1100SERIES LETTERDESCRIPTION GENERAL 1100 SERIES BLOW UP 1136,1150,1151,1160 Thru1163 Page LETTER CONTROL COMPARTMENT - FRONTMODELS 1152 THRU DESCRIPTIONCONTROL 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 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
Top Page Image Contents