Appendix A
Service Bulletin 0074
– NCC Electronic Temperature Control
Page 36
gmpopcorn.com
Adjustment of Alarm Set Point
If you would like to have the beeper sound sooner or later than the factory setting, adjust the
temperature setting as follows:
1.
To sound the beeper sooner, turn the Kettle Dump pot clockwise (CW) towards the -
10% mark on the control board. This will lower the alarm set point without changing
the power set point jumper value. For example if Set Point jumper is set at 400ºF and
the Kettle Dump pot is at -5% the kettle alarm temperature will be 380 ºF (400ºF -
20ºF), the power set point stays at 400ºF. If the pot is set at 0% the alarm and power
set points are the same, 400ºF. If the pot is set at -10% the alarm set point is 360ºF
(400ºF -40ºF) and the power set point is 400ºF. A change of 1% CW on the
potentiometer will subtract about 3 seconds from the alarm set point.
2.
To sound the beeper later, turn the Kettle Dump pot counterclockwise (CCW). A
change of 1% CCW on the Dump potentiometer will add about 3 seconds to the alarm
set point.
Adjustment of beeper Sound Level
If you would like to lower the beeper volume, remove jumper J3 shown in figure 1. To stop the beeper
remove jumper J4.
Salt / Sweet Option
The control board will have two separate set point jumpers. The lower value jumper is the sweet
temperature. These jumpers have wires attached to them going directly to a salt/sweet switch or a salt
/sweet relay. The salt/sweet switch selects which jumper is active.
Factory Set Point Jumper Settings
Model
Temperature
Salt
F
Temperature
Sweet
F
Overshoot
Potentiometer
Macho Pop/Pappy’s
460
400
-20%
2102E Citation
440
400
-20%
52 oz. Medallion
460
420
-20%
32 Oz. Pop-O-Gold
440
400
0%
2010 Astro Pop
460
420
0%
36 oz. Cornado
440
400
-20%
48 oz. Cornado
440
400
-20%
Table 1
