C24EO SERIES STEAMER - ELECTRICAL OPERATION
ELECTRICAL OPERATION
COMPONENT FUNCTION
Buzzer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Creates audible signal when timed cook cycle is complete and
when a low water condition exists.
Limiting Contactor (1CON) . . . . . . . . . . . . . . . Supplies line voltage to heating element assembly. Energized
whenever Power Switch (1S) is on and High Limit Thermostat
(1TAS) and Low Water Thermostat (2TAS) are closed.
Regulating Contactor (2CON) . . . . . . . . . . . . . Supplies line voltage to heating element assembly. Energized
whenever Hold Thermostat (3TAS) is closed or the temperature
controller calls for heat.
Heating Element . . . . . . . . . . . . . . . . . . . . . . . . Located below water reservoir. Heats water to produce steam.
Fuses (1FU & 2FU) . . . . . . . . . . . . . . . . . . . . . . Protect control circuitry from over-currents.
Low Water Light (1LT) . . . . . . . . . . . . . . . . . . . Amber (AM) colored light. Lit when Low Water Thermostat
(2TAS) senses water level is too low inside steamer.
On Light (2LT)
. . . . . . . . . . . . . . . . . . . . . . . . . Amber (AM) colored light. Lit when Power Switch (1S) is on.
Cook Light (3LT)
. . . . . . . . . . . . . . . . . . . . . . . Red (RD) colored light. Lit when High Limit (1TAS) and Low
Water (2TAS) thermostats are closed, door is closed and timer
is set.
Relay (K1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Controls Regulating Contactor (2CON) based on input from
Hold Thermostat (3TAS) and Temperature Controller. Does not
allow Timer Motor to run while Hold Thermostat (3TAS) is
closed.
Relay (K2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Latches Power Switch (1S) circuit. Turns on Low Water Light
(1LT) and Buzzer when steamer is low on water.
Relay (K3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Controlled by Power Switch (1S). Keeps Buzzer from sounding
and Low Water Light (1LT) off when switch is in off position.
Power Switch (1S) . . . . . . . . . . . . . . . . . . . . . . Rocker switch that turns steamer OFF and ON (momentary on).
Switch also resets Low Water Light (1LT) and Buzzer.
Door Switch (1SW)
. . . . . . . . . . . . . . . . . . . . . Removes power from a portion of the steamer control circuit
when door is opened.
High Limit Thermostat (1TAS) . . . . . . . . . . . . . Protects steamer by removing control circuit power if the heating
element assembly temperature goes above 495
E
F.
Low Water Thermostat (2TAS) . . . . . . . . . . . . Monitors presence of water inside steamer.
Hold Thermostat (3TAS) . . . . . . . . . . . . . . . . . Controls temperature of cavity for pre-heat/hold mode (opens at
175
E
F). Disables timer countdown if cavity temperature is too
low.
Timer Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . Counts cook time of product when time is dialed. Energizes
buzzer and de-energizes temperature controller when time
expires.
Temperature Control . . . . . . . . . . . . . . . . . . . . Monitors temperature probe and cycles power to regulating
contactor (2CON) for steam generation.
Temperature Probe . . . . . . . . . . . . . . . . . . . . . Senses cooking compartment temperature at steam vent and
sends a corresponding DC voltage back to the temperature
control (J-type thermocouple).
Transformer (1T) . . . . . . . . . . . . . . . . . . . . . . . Steps down line voltage to 120VAC control circuit voltage.
F25386 (June 2010)
Page 16 of 24
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