Appendix A
Service Bulletin 0074
– NCC Electronic Temperature Control
Page 38
gmpopcorn.com
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
