S/N 2011383 and above

(cemented to tach. coupling) to break the infra-red light beam

REFER TO PAGE B15

of the optical encoder(mounted on gear motor), producingelectri

 

cal pulses that are transmitted to the display. The display con

 

verts these pulses into a read-out of minutes and seconds.

 

The temperature portion of the Time/Temp Display uses a Ther

 

mistor Probe to sense oven temperature. The thermistor outputs

 

a resistance proportional to the oven temperature. This resis

 

tance is then converted by the display into a temperature reading.

AUTOMATIC COOL DOWN

When this oven is started, the time delay relay timing circuit is

 

enabled, permitting the oven fans to run for approximately 20

 

minutes after the oven is shut off, to cool the oven. The Time

 

Delay Relay will keep the coil of Relay closed, maintaining opera

 

tion of the Main Fan Motor and the cooling fans

6

Impinger II - 1100 Series Service Manual - International

Page 6
Image 6
Lincoln 1100 Series service manual S/N 2011383 and above