Lincoln 1100 Series Manuel D’Utilisation

present at both sets of terminals,

replace control.

Conveyor Drive

Check the drive sprocket on motor

(Stepper) Motor

output shaft to insure that it is tight.

WITH POWER OFF: Turn the motor shaft

to check for jammed gear box. Check motor wind

ings. Ohm readings on motor terminal - 1-5, 2-6, 3-

7, 4-8, each reading should be approximately 2

ohms. If motor shaft will not turn,

replace conveyor drive (stepper) motor.

Time/Temp Display

12 VAC Power Supply

Measure the transformer primary for a

inoperative

(Transformer)

nominal 120 VAC input, if voltage is not

present, trace wiring back to the oven

power source. Measure the secondary

output, which will normally be 12-15

VAC. Voltage across terminals 1 and 3

on the time/temp. display should read

12-15 VAC. Terminals 1-2 and 2-3

should be 1/2 the voltage reading to

1-3. If the above secondary readings

are not achieved, replace transformer.

Time/Temp Display

If proper voltage is present at terminals

1, 2, and 3 on time/temp display, but

the display is not lighted, recheck all

connections for tightness. If time/temp

display is still not operating, replace

the time/temp display.

Temp display out

NOTE: Time/Temp

Place the thermocouple of a pyrometer

or inaccurate

displays use two types

into the center of the top finger. Be sure

of temperature sensors,

the tip of the thermocouple is not

thermistor probe-2

touching metal. The pyrometer will

yellow wires, thermo-

indicate oven temperature.

couple probe probe-1

red wire and 1 white wire

Thermistor Probe

Disconnect the thermistor probe leads from the time/

temp display terminals #9 and 10. Measure the

resistance of the thermistor probe. See chart in

section D, showing probe resistance at various oven

temperature. If these readings are not achieved,

replace the thermistor probe.

Thermocouple Probe

Place your pyrometer thermocouple into

the center of the top finger. Measure

D.C. millivolts at terminals 9 and 10 on

the time/temp display. See

thermocouple chart in Section D for

proper readings. Connect temperature

meter to thermocouple at terminals 9 &

10 on back of the time/temp display.

(Be sure to maintain proper polarity on

thermocouple connections.) Compare

actual oven temperature with the

reading at the time/temp display. If the

temperature readings match,

recalibrate or replace time/temp

display. If the readings do not match,

replace thermocouple probe.

Power Supply

If a strange or unusual behavior is

Impinger II - 1100 Series Service Manual - International