Appendix A Service Bulletin 0074
– NCC Electronic Temperature Control
http://www.gmpopcorn.com
Page 38
Notes:
1.
Do not adjust the (4) painted potentiometers numbers R89, R36, R73 and R74 on the electronic heat
control. If adjusted, the performance will be erratic and could result in an over temperature condition.
2.
Thermocouple wire consists of (2) different wires made of different materials that are color-coded
polarity. It is important that red (-) is connected to red (-), and yellow (+) is connected to yellow (+),
at the lead-in plug, the receptacle, and at the electronic heat control. Note that the red lead is magnetic
if you have trouble determining which is which.
3.
This control includes a patented first time overshoot circuit. On power up if the kettle is below the
first time overshoot temperature it is normal for the heat light to go off and the kettle to stop heating
before the set dump temperature. The kettle will continue to heat as soon as the kettle temperature
drops below the first time overshoot temperature.
4.
The Limit, Heat and Alarm LED’s indicate the state of the output relays of the temperature control
board. If an output LED is lit there should be 120 VAC on the respective ¼” faston with respect to
common. The main voltage to the temperature control must be wired such that the hot 120 VAC (230
VAC) is connected to L1. The L2 connection is for the neutral or common voltage wire.
If you have any questions, please feel free to call Technical Service or Engineering at Gold Medal
Products Co. Toll Free Phone Number 1-800-543-0862
