Lincoln 1100 Series display. If the readings do not match, replace, thermocouple probe

Page 33

 

 

display. If the readings do not match, replace

 

 

thermocouple probe.

 

Power Supply

If strange or unusual behavior is experienced

 

 

such as a rolling of numbers, or lock up at a

 

 

given number, first check for a display circuit lock

 

 

up. This can be caused by a voltage spike or

 

 

surge in the incoming power lines. To eliminate

 

 

this condition remove power from the time/temp.

 

 

display by shutting off the main fan

 

 

switch for 15 seconds, or if display stays on,

 

 

(older models) circuit breaker interruption may be

 

 

required. This should eliminate the problem. If

 

 

the problem continues, jumper the two fuses in

 

 

the red wires leading from the 12.6 VAC trans-

 

 

former to the display on older units.

 

 

If this does not solve the problem,

 

 

it may be coming in through the

 

 

commercial power lines. Suggest

 

 

that customer contact his power

 

 

company for evaluation.

 

Temp Display

Perform the power supply check,

 

inaccurate, erratic,

the thermistor probe check, and

 

or inoperative

then perform the time/temp

 

 

simulator test. Refer to Section D for

 

 

instructions. Remember, when

 

 

using the time/temp simulator,

 

 

remove all the leads from the

 

 

back of the display except the 3

 

 

power leads. After completion of

 

 

this test and if reinstalling display back

 

 

into the oven, the dip switches

 

 

must be reset for oven operation.

S/N 2011821 &

Time Display

Perform all checks as in the above

Above, See Pg. 45

inaccurate, erratic,

evaluation. If the time check is

 

or inoperative

okay, refer to the next section -

 

 

optical encoder.

 

Optical Encoder

The above time/temp test should

 

 

have already been performed.

 

 

Remove the dust cover from the

 

 

gearmotor and inspect the coupling

 

 

and encoder disc. The coupling set

 

 

screws should be tight and not

 

 

slipping on the motor shaft or the

 

 

tach. generator shaft. The encoder

 

 

disc should be firmly attached to

 

 

the coupling and not warped. Check

 

 

the positioning of the optical

 

 

encoder disc. The disc should not

 

 

be touching the optical encoder

 

 

assembly and the encoder assembly

 

 

should be mounted so it is squarely

 

 

facing the coupling shaft. This is

 

 

to allow the infrared light beams to be

 

 

broken by the encoder disc.

 

 

If all this is okay, then replace the

 

 

optical encoder assembly.

Impinger II - 1100 Series Service Manual - International

33

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Contents IMPINGER CONVEYOR OVENS SERVICE MANUALMODEL 1100 SERIES 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 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 switch. If switch is closed and voltage Burner Switchpresent on one side only, replace switch Gas Pressure SwitchCheck for proper line voltage to Flame will not stay on Power Supply Ignition ControlFlame Sensor Pilot lamp is on, butthen the problem is usually with thetemperature bearings. TheInstallation and Operations Manual improper adjustment. Also check for wornPower Supply Check power supply at the DCDC Gearmotor this condition remove power from the time/temp surge in the incoming power lines. To eliminateswitch for 15 seconds, or if display stays on required. This should eliminate the problem. IfTROUBLE SHOOTING GUIDE ELECTRIC OVENS Air Pressure Switch Switch, HeatThis normally open switch should close when the adjustment knob to maximum temperature positionas follows MODEL Main fan runs after maintenance. Also, most of the problems WITH POWER OFF: To check resistance of thefor proper readings. If these readings are not achieved, replace thermocoupleConveyor will not run MODEL 1151 200 VAC THREE PHASE 60 HZ TROUBLESHOOTING GUIDE ELECTRIC OVENRelay, Main Fan Conveyor will not run S/N 2011383 and above Mercury Contactor Heater ElementsREFER TO PAGE REFER TO PAGE REFER TO PAGE REFER TO PAGE REFER TO PAGE 43STEPPER MOTOR DRIVE Conveyor will not run yellow wires, thermo 12 VAC Power Supplyred wire and 1 white wire Thermocouple Probe Power Supplyexperienced, such as a rolling of IMPINGER II CONVEYOR OVEN REMOVAL, INSTALLATION, AND ADJUSTMENTRELAY, DPST 1.Shut off power at main breaker TO REMOVE THE BLOWER WHEEL FOR PERIODIC CLEANING This is part of the burner blower motor assemblyMOTOR, BURNER BLOWER TO REMOVE BLOWER MOTORAIR PRESSURE SWITCH Page Page SOLENOID VALVE 1.Shut off power at main breaker 1.Shut off power at the main breaker5.Loosen pipe union in piping assembly HEATING ELEMENTS 1.Shut off power at main breakerIGNITION CONTROL 1.Shut off power at main breaker 2.Shut off gas at main line to the oven ORIFICE, MAIN BURNER4.Remove control compartment covers 5.Loosen 4 nuts holding manifold to burner capLAMP, PILOT BURNER LENS, PILOT LAMP 1.Remove gearmotor assembly see “GEARMOTOR” Above OPTICAL ENCODER ASSEMBLY7.To adjust optical encoder TACH. GENERATOR 1.Turn off power at main breakerD C MOTOR CONTROL BOARD 4.Reverse wires fastened to terminals A+ and A 1.Turn off power and remove conveyor5.Reverse wires fastened to terminals T1 and T2 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 4.Remove conveyor gear motor BURNER ALARM - REPLACEMENT8.Remove top control compartment brace 10.Assemble in reverse orderGENERAL –1100SERIES LETTERDESCRIPTION GENERAL 1100 SERIES BLOW UP 1136,1150,1151,1160 Thru1163 Page MODELS 1152 THRU CONTROL COMPARTMENT - FRONTLETTER 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 MODELS 1152 THRU 1158 S/N 2011821 AND ABOVE CONTROL COMPARTMENT – REARLETTER 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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