AccuTemp Accu-Steam G2 Series, Руководство по обслуживанию

Страница: 9 / 34

Accu-Steam™ G2 Gas Service Manual
8
SP8042-1911
through the combination gas valve, through the orifices in each main burner and
through the main burner tiles.
12. When the gas/air mixture is ignited, the flame sense probe will detect a DC voltage
level through the flame’s ionized gas to ground via the orange flame sense wire
harness to the ignition module, pin #6.
13. If the DC voltage level is detected before 4 seconds and is at a high enough level the
ignition module will continue to hold the main gas valve open.
14. If the DC voltage level is not high enough within the 4 second window, the ignition
module will shut down the main gas valve.
15. A fault timer is connected across the red and blue harnesses from the ignition
module. When the ignition module is commanded to start the ignition cycle, 24VAC is
present on both the red and the blue harnesses and the timer is deactivated.
16. If the ignition module fails to see a sufficiently high enough DC voltage level through
the flame sense circuit, the ignition module will disable 24VAC from the red harness
and the timer will see the voltage potential from the chassis ground/yellow system
harness side of the transformer and begin an approximate 6 second timer sequence
that controls the ignition fault indicator lamp causing it to flash.
17. When the griddle heats up to the set point temperature, the digital controller RTD
resistance changes and provides a signal to the control board telling it that the set
point temperature has been reached.
18. When the digital controller sees the resistance value for the set point temperature,
it cuts power to the ignition control DC coil relay and breaks the connection to the
ignition module causing the griddle to stop heating further.