SP8016-1005
ACCU-STEAM SERVICE MANUAL
PAGE 3
INTRODUCTION
The griddle is constructed and uses technology like no other griddle in the world. The griddle
cooking surface is the top of a chamber which has a unique environment. Welded stainless steel
reinforcements studs connect the chamber top to a chamber bottom. The perimeter joints are all
robotically welded and produce a vessel that is air tight. The chamber is filled half full with distilled
water. The remaining air is removed and the chamber is welded shut. At this point, the chamber
becomes a hermetically sealed vessel, never to be opened again. The griddle steam chamber
requires no water or maintenance. A thermo-well for a thermocouple and a thermo-well for the over-
temp safety shutdown system are also welded into the griddle steam chamber. At temperatures below
212°F
(100 C), the chamber is actually in a vacuum, similar to that of a canning jar. At temperatures
above 212
°F
, the chamber operates under pressure. Located between the water and the bottom of
the cooking surface is the best heat transfer medium – steam, the most effective way to transfer heat.
The thermocouple senses the temperature of the steam and reports this data to the thermostat, which
energizes the burners. This system maintains the griddle cooking surface temperatures to within
±
3
°F
over the entire cooking surface and provides a near instant temperature recovery, even on the
same spot on the griddle, when turning food in place.
SEQUENCE OF OPERATION S/N 2611 to 7183
120V power is supplied to the primary side of the transformer. 24VAC comes off the secondary side
of the transformer which provides power to the over-temp / solder washer assembly. Once the ON/
OFF switch is set to the ON position, power is applied to the ignition module through the blue wire
and back out the red wire to the main gas control valve. The ignition module will send high voltage
to the Ignitor probes thus causing a spark to ignite the standby burner. If the ignition module doesn’t
sense a flame it drops power to the main gas control valve and will shut down the griddle. If the
ignition module receives the acceptable level of flame sense the ignition cycle continues and the time
delay relay times out and sends voltage to power to thermostat. The thermostat in conjunction with
the temperature sensor regulate the heat as required. If at any time the ignition module flame sense
voltage is not acceptable it cuts power to the griddle.
SEQUENCE OF OPERATION S/N’s 7184 and UP
Power comes in the back of the unit and goes to the transformer. The transformer lowers the
voltage to 24 volts VAC. Power is then transferred to the high limit. When the circuit is energized
there will always be power to the thermostat. When the thermostat calls for heat it will send power
to the ignition module. Once the standby burner is lit and the module is satisfied power will then be
transferred to the time delay relay. When the time delay relay times down, the main burners will ignite.
When the heat cycle is over all burners will be off.
CONTINUOUS PILOT BURNER
INTERMITTENT IGNITION
