Frymaster PASTAMAGIC 8196692 - Manual (Page 6)

1-3
the basket lift arms down, a cam attached to the left motor eventually loses contact with a roller-
activated microswitch and power to the motors are cut. When the controller times out, logic circuits
reverse the switch positions so that the motor circuit is again completed and the motors are restarted,
raising the basket from the cookpot. At the fully raised position, the cam again makes contact with
the microswitch, cutting power to the motors and stopping the lift in the up position.
THE ELECTRONIC IGNITION SYSTEM
The ignition module, located in the component box, is connected to ignitor assemblies at each
burner. The ignition module performs three important functions: it provides an ignition spark,
supplies operating voltage to the gas valve, and proofs the burner flame. The GPC series use a
Fenwal ignition module.
The ignition module contains a 4-second time delay circuit and a coil that activates the gas valve.
The ignitor assembly consists of a spark plug, an enrichment tube, and flame sensor.
Module located in box below cookpot.
At start-up, the controller power switch is placed in the ON position. If the controller senses the
correct operating parameters (i.e., the correct water level in the cookpot), it sends a signal to the
24VAC relay in the component box to close the blower contacts. This supplies line voltage to the
blower motor. A centrifugal switch in the blower closes if the blower is operating correctly, which
allows 24VAC to flow through the closed contacts of the 24VAC relay to the ignition module.
Circuitry in the ignition modules sends 24VAC to the gas valve. Simultaneously, the module causes
the ignitors to spark for 4 seconds to light the burners. A flame sensor for each burner verifies that
the burner is lit by measuring the flow of microamps through the flame. If the burner does not light
(or is extinguished), current to the ignition module is cut, preventing the gas valve from opening,
and the ignition module “locks out” until the controller power switch is turned off and then back on.
A probe monitors the temperature in the cookpot. When the programmed setpoint temperature is
reached, resistance in the probe causes the heat cycle circuitry in the controller to cut off current to
the 24VAC relay, thus cutting line voltage to the blower. This cuts the 24VAC to the ignition
module, causing the gas valve to close.